Resize an image to exact pixel dimensions

Type the width or height you need and this image resizer scales the picture to match. Keep proportions is on by default, so changing one side updates the other; turn it off to set both freely. It opens PNG, JPEG, WebP and GIF files, resizes up to 8000 pixels on a side, and always downloads a PNG. The image stays on your device.

How to resize an image

1. Choose an image or drag one onto the box. Its pixel dimensions and file size appear in the table.
2. Enter a new Width or Height in pixels, or pick a Quick scale.
3. Turn off Keep proportions if you need a shape that doesn't match the original. The picture is stretched to fit.
4. Check the new pixel size and file size, then press Download PNG.

Shrinking large photos

When you scale an image down to less than half its size, the tool halves it in steps before the final resize instead of jumping straight to the target. One large jump can leave jagged edges on fine detail, and stepping down keeps the result smooth. Making an image bigger works too, but it can't add detail that isn't in the original. Because the output is PNG, a resized photo can have a larger file size than the JPEG you started with. If that matters, run it through the Image Compressor afterwards.

Compress an image without resizing it

This image compressor re-encodes a picture at a lower quality so the file gets smaller while the pixel dimensions stay the same. Choose JPEG or WebP, set Quality anywhere from 10 to 100, and the page shows the new file size and the percentage saved before you download. It opens PNG, JPEG, WebP and GIF files and runs in your browser.

How to compress an image

1. Choose an image.
2. Pick JPEG or WebP under File type.
3. Lower Quality until the new size looks right. It starts at 75. The preview shows the compressed result; press Show original to compare.
4. Press Download JPEG or Download WebP.

JPEG or WebP

WebP usually gives a smaller file than JPEG at a similar quality, and it keeps transparent areas. JPEG opens in almost any software, but it has no transparency, so transparent pixels are filled with white. If the result says the file got larger, the original was already compressed harder than your setting, so lower the quality or keep the file you have. Low settings show first on text and fine lines, so check the downloaded file up close before using it on artwork with lettering.

Convert images between PNG, JPEG and WebP

Change an image's file type without opening an editor. Load a PNG, JPEG, WebP or GIF, pick PNG, JPEG or WebP as the output, and the page shows the new file size before you download. The dimensions don't change, and JPEG and WebP are saved at 92% quality. The conversion runs in your browser, so the file isn't uploaded.

How to convert an image

1. Choose an image or drag it onto the box.
2. Pick a file type under Convert to.
3. If the image has transparent areas and you picked JPEG, choose the color that fills them.
4. Check the new file size and press Download.

Which file type to pick

PNG is lossless, which makes it the right choice for logos, screenshots and anything with transparency or sharp text, at the cost of bigger files. JPEG suits photos that need to open anywhere, as long as you don't need transparency. WebP keeps transparency and usually produces smaller files than either, which makes it a good default for images on the web. For BMP, ICO favicons, PDF or converting a batch of files at once, use the Batch File Converter.

Crop an image to 1:1, 4:5, 9:16, 16:9 or 3:2

Pick a shape and this cropper cuts the largest area of that shape out of your picture. The shapes cover the usual jobs: Square (1:1) for cover art and profile photos, Portrait post (4:5) for feed posts, Story (9:16) for stories, Widescreen (16:9) for video thumbnails and Photo (3:2) for a standard photo print. It opens PNG, JPEG, WebP and GIF files, crops without scaling the pixels, and downloads a PNG.

How to crop a photo to a ratio

1. Choose an image.
2. Pick an Image shape. Each one shows the size it will produce.
3. Drag the frame in the preview, or use the Position slider, to choose which part of the picture to keep.
4. Check the cropped size and press Download PNG.

Getting an exact size

The crop keeps every pixel inside the frame, so the output is as large as your picture allows. A 4000 × 3000 photo cropped to 1:1 comes out at 3000 × 3000. If a platform asks for a specific size, such as 1280 × 720, crop to the shape here first and then set the exact dimensions in the Image Resizer. When the picture already has the chosen shape, the page says so and there's nothing to move.

PFP maker: circle or square profile picture

Turn any photo into a profile picture. The tool fills a square from your photo, lets you zoom in up to 300% and drag the photo into place, and can cut the result into a circle with transparent corners. It opens PNG, JPEG, WebP and GIF files and downloads a 256, 512 or 1024 pixel PNG. Nothing leaves your device.

How to make a profile picture

1. Choose a photo. It starts centered.
2. Drag Zoom to tighten the framing, then drag the preview (or use the position sliders) to move the subject into place.
3. Pick Circle or Square.
4. Pick an Export size: 256, 512 or 1024 px, then press Download PNG.

Circle or square

Many apps already display avatars as circles, so a square upload is often enough and leaves the app room to frame it. Circle is useful where nothing will crop the image for you, like a website, a stream overlay or a video thumbnail, because the area outside the circle is saved as transparent pixels rather than a solid color; the preview shows those corners as a checkerboard. If the framed part of your photo is smaller than the size you pick, it gets scaled up and will look soft, and the page tells you when that happens.

Extract a color palette from an image

Upload a photo, cover or mood-board image and this pulls out its most common colors as hex codes. Choose anywhere from 3 to 10 colors, click a color to copy its code, or press Download hex codes to save the full list as a text file. It reads PNG, JPEG, WebP and GIF files, and the image is processed in your browser.

How to get hex codes from a photo

1. Choose an image.
2. Set the Number of colors you want.
3. Click a color under the image to copy its hex code, or press Copy all.
4. Press Download hex codes for a .txt file with one hex code per line.

How the colors are picked

The image is scaled down to a small sample and every pixel is sorted into one of 4,096 color groups. The groups with the most pixels win, and each swatch is the average of the real pixels in its group, so it's a color that actually appears in the image. That means the palette favors area: a large grey sky will outrank a small red logo. To get an accent color that only covers a small part of the picture, crop in on it first. Transparent pixels are ignored, and two close shades can both appear when a color falls on the edge between groups.

Free photo editor for brightness, contrast and color

Adjust a photo with six sliders and watch the change as you drag: Brightness, Contrast and Saturation from 0 to 200%, Warmth, Black & white, and Blur up to 20 pixels. It opens PNG, JPEG, WebP and GIF files, and the edited image downloads as a PNG. Editing happens in your browser, so the photo isn't uploaded.

How to edit a photo

1. Choose a photo.
2. Drag the sliders under Light and color first, then Effects. Brightness, Contrast and Saturation start at 100%, which leaves the photo unchanged. Each slider has its own Reset.
3. Press Show original to compare, then press it again to go back to your edit.
4. Press Download PNG. Reset adjustments puts every slider back; Start over also clears the photo.

Size and how the effects work

Photos wider than 1600 pixels are scaled down to 1600 pixels wide for editing and export, which suits social posts and the web but not large prints. The effects use the same filter engine as CSS, so the download matches the preview. Warmth works by blending in a sepia tone, so high values push the whole image toward brown. Blur is measured on the scaled image, which means the same setting looks stronger on a small photo than on a large one.

Convert audio to WAV and change the sample rate

Load an MP3, M4A, OGG, FLAC, AIFF, WAV or other audio file your browser can play and export it as an uncompressed 16-bit WAV. By default the WAV keeps the file’s own sample rate and channels. If you need to, open Change sample rate or channels to resample to 44.1 kHz, 48 kHz or 22.05 kHz, or switch to mono or stereo. Before you download, the You’ll get line shows the output and roughly how big the file will be. Nothing is uploaded.

How to convert an audio file

1. Choose an audio file. The Original line shows its format, sample rate, channels and length.
2. To keep everything as it is, press Download WAV.
3. To change the sample rate or switch between mono and stereo, open Change sample rate or channels first.
4. Check the You’ll get line and press Download WAV.

Which sample rate to pick

44.1 kHz is the CD standard and the usual rate for music releases. 48 kHz is standard for video, so match it when the audio is going into a video edit. 22.05 kHz halves the file size compared with 44.1 kHz but loses the high end, which is acceptable for voice notes and rough demos. Switching stereo to mono combines both channels into one and halves the size again. This page only writes WAV. To convert audio to MP3, 24-bit WAV or AIFF, use the Batch File Converter.

Trim silence from the start and end of audio

This tool finds where the sound actually begins and ends in a recording and cuts the silence on either side. It's useful for voice notes, vocal takes and one-shot samples with dead air before the first hit. Quiet gaps in the middle are left alone. Load any audio your browser can play, such as MP3, WAV, M4A or OGG, and download the trimmed result as a 16-bit WAV.

How to remove silence from a recording

1. Choose an audio file. The tool shows how much silence it will remove from each end, and the Original line shows the file’s length and peak level.
2. If needed, set Silence sensitivity, from -60 to -20 dB. Anything at the edges quieter than this gets cut.
3. Set Padding, up to 500 ms, so the audio doesn't start or stop abruptly.
4. Press Play trimmed audio or Play the last 3 seconds to check the cut, then press Download WAV.

Choosing a sensitivity

The default of -45 dB suits most clean recordings. If background hiss or room noise is being kept, raise the threshold toward -30 dB so the noise counts as silence. If the soft start of a note or a breath is getting clipped, lower it toward -60 dB or add more padding. The cut is made at the first and last samples louder than the threshold on any channel, so a single click or pop near the edge will stop the trim at that point.

Normalize audio to a target level

Normalizing turns a whole file up or down by one fixed amount so it hits a target level. Unlike a compressor or limiter, it leaves the dynamics of the recording as they were. Load an MP3, WAV, M4A, OGG or other audio file, choose whether to match its peak or its average level, set a target between -24 and -1 dB, and download a 16-bit WAV. It runs in your browser.

How to normalize an audio file

1. Choose an audio file. The Original line shows its current peak and average level.
2. Under Match on, pick Peak or Average (RMS).
3. Set the Target level. It starts at -3 dB peak, a safe default that can't clip.
4. Check the gain being applied, the new peak and average, and the clipping line, then press Download WAV.

Peak or average

Peak moves the loudest single sample to the target, so the result can't clip. It's exact, but two files with the same peak can still sound quite different in loudness. Average matches the RMS level instead, which lines up how loud clips feel more closely. Raising the average can push peaks past full scale, so the gain is capped to keep the loudest sample at -0.1 dB, and the page tells you when clipping protection has limited the gain. This isn't a LUFS measurement, so don't rely on it to hit a streaming platform's loudness target.

MIDI visualizer: piano roll video from a MIDI file

Drop in a .mid or .midi file and watch the notes fall onto a piano keyboard, with each track in its own color and keys lighting up as notes land. You can hide or recolor tracks, restyle the notes and background, and record the result as a video. A MIDI file has no sound of its own, so add a bounce of the same arrangement as a soundtrack if you want audio in the recording. The file is read in your browser.

How to make a MIDI piano roll video

1. Choose a MIDI file.
2. Under Soundtrack, choose an audio bounce of the same song if you want sound, and pick a Video size: 720p, 1080p, Vertical or Square.
3. Under Tracks, untick any you don't want and pick a colour for each.
4. Adjust Fall time, and open Note style, Glow or Background and keyboard for finer changes.
5. Press Export video, let it play to the end, then press Stop and save.

Free online BPM finder

Drop in a song and this finds its tempo in beats per minute. It reads any audio file your browser can play, including MP3, WAV and M4A, and gives a whole-number BPM between 60 and 200 with a short note on how confident the read is. The file is decoded and analyzed on your device, not uploaded.

How to find the BPM of a song

1. Click Choose an audio file, or drag the track onto the box.
2. Wait for the result. Longer tracks are checked in up to five 15-second sections, and the tempo those sections agree on most strongly wins.
3. If the song feels twice as fast or slow as the number, press Half time or Double time. For triplet feels, open Tempo correction for triplet feels and try ⅔× or 1.5×. Each button shows the tempo it would give before you press it.
4. For a second opinion, press Tap to the beat in time with the music. The readout averages your last eight taps, and Reset taps clears only those taps.

Why the BPM can read as half or double

The detector listens for hits in two ranges, kick and bass in one and snares and hats in the other, then looks for the spacing that repeats most strongly. A 140 BPM trap beat and a 70 BPM half-time feel share most of that spacing, so either can win. Syncopated basslines and triplet patterns can throw it off by 2:3 in the same way. The correction buttons scale the current reading instead of re-running the analysis, so you can step between options until the number matches what you hear.

Song key finder with a tuning check

This song key finder reads an audio file and names its key, such as A Minor or F♯ Major. It also measures how far the recording sits from standard A=440 tuning, in cents, and when it's off, shows the reference pitch it's actually tuned to. Any format your browser can decode works, including MP3, WAV and M4A, and the analysis runs locally without uploading the file.

How to find the key of a song

1. Choose an audio file or drag one onto the box.
2. The tool checks the tuning first, then the key, using the loudest sections of the track.
3. Read the key and how confident the read is. The next closest key is listed under it, and a close call says so plainly.
4. Check the Tuning section for the offset in cents, the reference pitch and how far to pitch the track to reach A=440.

Detuned tracks and relative keys

Tape rips, sample-rate mismatches and deliberate pitch shifts can push a whole track a few cents sharp or flat. When the tuning read is clear, the key is measured against that shifted pitch instead of A=440, and the Tuning section tells you how many cents to pitch the track to bring it back to standard. The most common mix-up is between a major key and its relative minor, like C Major and A Minor, because they share the same notes. When those two are nearly tied, the tool checks the bassline to settle it. Keys are written with sharps, so D♭ Major appears as C♯ Major.

Cover art mockup generator

Upload your album or single artwork and see it in three places: a phone now-playing screen, a music player card and a vinyl record with the art as the center label. Add a track title and artist name and the phone and player mockups update as you type. Each mockup downloads as its own PNG with a rowen.work mark in the corner. Rendering happens in your browser, so the artwork stays on your device.

How to make a cover art mockup

1. Choose your cover art. Any image your browser can open will work, and square art fits best.
2. Optionally type the Track title and Artist name.
3. Check the three previews. On a phone, switch between them with Phone, Player card and Vinyl.
4. Press Download phone PNG, Download player card PNG or Download vinyl PNG for the ones you want.

Non-square artwork and long titles

Every art slot is square. If your image isn't, the tool crops it from the center to fill the slot instead of stretching it, so the edges of a wide or tall image get cut off; the page says which edges before you download. For a preview that matches your actual release, crop to 1:1 first with the Image Cropper and make sure nothing important sits near the edges. Titles and names that are too long for the layout are shortened with an ellipsis. If you'd rather have the artwork designed for you, see custom cover art.

Free music visualizer for your tracks

Load a song, watch it react as it plays, then record the result as a video. There are eight styles: Bars, Mirror Bars, Waveform, Spectrum, Circular, Rings, Particles and Starburst. Color can be solid, gradient, rainbow or reactive, the background can be a solid color, a gradient or your cover image blurred behind the motion, and you can add a title and artist overlay. Playback, rendering and recording all happen in your browser.

How to make a visualizer video

1. Choose an audio file and press play to preview it.
2. Pick a Style and a Video shape (Landscape, Square or Vertical), then a Color.
3. Background, Motion (sensitivity, speed, trail), Shape and effects (glow, bar or segment count, symmetry, beat flash) and the title overlay hold the finer settings.
4. Press Export video. The track restarts from 0:00 and records to the end, or press Stop and save to end early and keep what's recorded.

What to expect from the export

Recording happens in real time, so a three-minute song takes three minutes to capture, and you'll hear it play while it records. The file is WebM in most browsers, or MP4 where that's the only video format the browser can record; the page names the one you'll get next to the button. The video's pixel size follows how large the preview is on your screen, so a bigger window gives a higher-resolution file, and the exact size is shown before you start. Every export carries a rowen.work watermark. If Export video is greyed out, your browser can't record canvas video, so try Chrome or Edge.

Waveform generator: turn audio into a PNG or SVG

This waveform generator draws the shape of an entire song as a still image for cover art, posters or social posts. Load an MP3, WAV, M4A or any other audio file your browser can decode, style the waveform, and download it as a PNG or an SVG. The audio is analyzed on your device.

How to make a waveform image

1. Choose an audio file.
2. Pick a Style (Bars, Mirror bars, Line, Filled, Blocks or Dots) and an Image shape: Landscape, Square, Vertical or Banner (3:1).
3. Set the Color. Background, Fine-tune shape (count, thickness, corner roundness, padding) and Title and artist text hold the rest of the settings.
4. Under Download, pick PNG or SVG. For PNG, also pick 1×, 2× or 3× resolution.
5. Press Download PNG or Download SVG.

Lyric card maker for posts and stories

Type a lyric or quote and this turns it into a typography graphic sized for social media. The text scales itself to fill the frame, and you can choose Square, Post (4:5), Story (9:16) or Landscape. Templates range from plain text, oversized quote marks, a card behind the words, a bold weight and an underline, to layouts modeled on the Spotify and Apple Music lyrics screens. Graphics download as PNG or SVG with a rowen.work watermark.

How to make a lyric graphic

1. Type or paste the line into Lyric or quote. Line breaks you add are kept.
2. Pick a Template and an Image shape.
3. Open Font and size, Position and alignment, Colors and background or Credit line to fine-tune it. Show credit adds a line such as the song title and artist.
4. Pick PNG at 1×, 2× or 3×, or SVG, then press Download PNG or Download SVG.

The Spotify and Apple Music templates

These two swap the normal layout for a recreation of an app's lyrics view. Each line you type becomes a lyric line, the middle line is highlighted as the one playing, and a mini player shows the Song title and Artist you enter. If you upload a Cover image background, it also fills the album thumbnail. The icons are simple drawn shapes, not the apps' real logos. The templates always use their app's typeface; the Spotify Mix and SF Pro options under Font let you use those typefaces with the other templates. For these templates the PNG export is the safer choice, because the SVG version names its fonts instead of embedding them and the text can change typeface on another computer.

Free online audio trimmer

Cut a clip out of a song, voice note or sample without installing an editor. The trimmer shows the waveform, lets you drag out the section you want, and exports it as a 16-bit WAV or a smaller WebM file with optional fades, gain and peak normalization applied. It opens MP3, WAV, M4A and other formats your browser can decode, and the decoding, editing and export all run in your browser.

How to trim an audio file

1. Choose an audio file. The whole track starts out selected.
2. Drag across the waveform to select a section, drag the handles to fine-tune it, or type exact Start and End times.
3. Press Preview selection to hear the clip on a loop, with any fades and volume changes applied.
4. If you need them, open Fade in and out (up to 5 seconds each) or Volume (gain of ±12 dB and Normalize peak).
5. Pick WAV or WebM as the file type, name the file and press Download.

MP3 tag editor with cover art

This MP3 tag editor reads the ID3 tags already on a file and lets you change them before you send the track out. You can edit the title, artist, album, album artist, genre, year, composer, track and disc numbers, BPM and a comment, and add, replace or remove the embedded cover art. The download is the same audio with a fresh ID3v2.4 tag, and nothing leaves your browser.

How to edit MP3 tags

1. Choose an MP3. Existing tags and artwork fill the form automatically.
2. Edit the title, artist and album. Open More track details for album artist, year, genre, composer, track and disc numbers, BPM and a comment. Genre offers the standard ID3 genre list, or Custom… for your own.
3. Press Add cover (or Replace cover) to set artwork, or Remove cover to clear it. Detect BPM fills in the tempo from the audio.
4. Set the file name and press Download MP3.

Audio merger: join tracks into one file

Combine two or more audio files into a single track in your browser. Add your clips, put them in order, and join them back to back, with a gap of silence or with a crossfade. Each clip has its own gain, fade in, fade out and mute, and the finished mix exports as a 16-bit WAV or a WebM file. It accepts MP3, WAV, M4A, OGG and FLAC.

How to merge audio files

1. Choose audio files. You can select several at once and add more later with Add clips.
2. Drag the grip on a clip to reorder it, or focus the grip and press the up and down arrow keys. Press Edit on a clip to set its gain, fade in, fade out or mute.
3. Pick how clips join: No gap, Silence gap (up to 5 seconds) or Crossfade (0.1 to 3 seconds).
4. Press play to hear the mix. Normalize peak is on by default; turn it off to set Master volume yourself.
5. Pick WAV or WebM as the file type, name the file and press Download.

Free file converter for audio, video, images and data

Drop in one file or a whole batch and choose what each should become. Audio files, including MP3, WAV, M4A, OGG, FLAC and AIFF, convert to MP3 at up to 320 kbps, to WAV or to AIFF, which covers the everyday WAV to MP3 job. MP4, MOV and WebM videos give up their audio track or a still frame. Images convert to PNG, JPEG, WebP, BMP, PDF or a multi-size ICO favicon, depending on the source. CSV, TSV and JSON convert to each other or to a Markdown or HTML table, and Markdown, text and HTML documents can become a PDF. Nothing is uploaded.

How to convert files

1. Choose files or drag them in.
2. On each file’s row, choose what that file should become.
3. Check Settings for all files. Only the settings your files use appear there: Quality, Background for transparent areas, MP3 bitrate, Audio sample rate or SVG export width.
4. Press Convert on a row or Convert all, then download each file or press Download all as .zip.

Sample rates, MP3 and limits

For WAV, AIFF, FLAC and MP3 files, the sample rate is read from the file itself, so a 44.1 kHz track stays at 44.1 kHz. For other formats, pick a rate under Audio sample rate if it matters. MP3 encoding uses the LAME encoder, which loads only when you convert to MP3. With two or more images queued, Combine images into one PDF puts each on its own A4 page. The converter can't write AAC, M4A or video, and it can't read HEIC, PDF or Word files.

DAW project tools: read, downgrade and export MIDI from project files

Drop in an Ableton Live set (.als), FL Studio project (.flp), REAPER project (.rpp), LMMS project (.mmpz or .mmp) or a MIDI file. You'll see which version saved it, the tempo, time signature, key, track count, and every plugin and sample path it uses, with repeated plugins counted once. Then you can save an Ableton set for Live 11 or 10, save an FL Studio project for an older FL, fix REAPER sample paths after moving drives, unpack an LMMS project to .mmp, export the notes as MIDI, or switch a MIDI file between type 0 and type 1. It doesn't convert a project from one DAW to another. It's free, there's no sign-up, and the file is read in your browser.

How to use it

1. Choose a project file, or drag it onto the box.
2. Check the summary, then the plugin and sample lists under Inside the project, to see what the project needs.
3. Under What you can do with it, pick the version or option you want. Only the tools that work for that format appear.
4. Press the download button. The new file is named after yours, like mysong (Live 11).als.

What "save for an older version" really does

For Ableton and FL Studio, it rewrites the version stamp the project carries so the older app agrees to open it. It doesn't translate anything else. Devices, plugins and features the older version doesn't have are dropped or show as missing when it loads, so keep your original and check the result. The key is read from the file when Live 12 stored one; otherwise it's estimated from the notes and labelled that way. Logic Pro, Cubase and Studio One projects use closed formats, so they can't be read here.

Free online MIDI editor, sequencer and player

Open a .mid or .midi file, or start from blank bars, and edit the notes in a piano roll: add, move, resize and delete notes, change velocities, quantize, transpose and humanize. Play it back with a built-in preview synth, loop a section, then download the edited file as MIDI or render the preview sound to a WAV. The file is read and written in your browser and never uploaded.

How to edit a MIDI file online

1. Open a MIDI file, or choose a tempo, time signature and number of bars and press Start blank pattern.
2. Pick a track above the piano roll. Other tracks show faintly behind it.
3. Click the grid to add notes at the snap length, drag them to move, and drag their right edge to resize. Shift-click or drag a box to select several.
4. Use the velocity lane and Change notes to shape them, and press Play to hear them.
5. Press Download MIDI to take the file into your DAW, or Download WAV preview for an audio sketch.

Mix check: LUFS meter, true peak, tonal balance and mono check

Drop in a bounce and get the numbers streaming services and mastering engineers look at. Integrated, short-term and momentary loudness and loudness range follow ITU-R BS.1770-4 and EBU R128. True peak is measured with 4× oversampling. Tonal balance, stereo correlation, width and mono compatibility come from the track's averaged spectrum. Nothing is uploaded; the analysis runs in your browser.

How to check a mix before release

1. Choose a WAV or FLAC bounce of the finished track.
2. Read What to check first: each Problem or Check says what was measured and what to listen for.
3. Look at Tonal balance against the guide closest to your genre, and at Stereo and mono for bands that cancel.
4. Press Play and switch between Phone, Laptop, Car and the other speakers, with Mono on and off.
5. Optionally add a released song you like under Compare with a reference and switch between them at matched loudness.

Check an audio file's bitrate, sample rate, bit depth and tags

This tool reads an audio file's headers directly and lists what they say: the container and codec, sample rate, number of channels, bit depth for WAV, FLAC and AIFF, bitrate, length and the encoder that made it. For MP3 it tells you whether the file is constant or variable bitrate by reading its Xing, Info or VBRI header, and works out the average by scanning the frames. It also shows every tag it finds, from ID3v1 and all three ID3v2 versions to RIFF INFO, broadcast WAV, FLAC and Ogg comments, AIFF text chunks and M4A metadata, along with any embedded cover art. It runs in your browser, so the file never leaves your device.

How to see an audio file's details

1. Choose or drop an MP3, WAV, FLAC, OGG, Opus, AIFF or M4A file.
2. Read the summary at the top: format, length, file size, sample rate and channels. Codec, bit depth, bitrate and encoder are under Audio.
3. For WAV, FLAC and AIFF, check the result under Lossy history check.
4. Scroll down for tags, cover art and technical details, or press Copy details to paste them somewhere else.

Reverse, loop, speed up, distort or bitcrush audio online

Load a WAV, MP3, FLAC, OGG or other audio file and stack effects on it: trim the silence, reverse it, loop it a set number of times with a crossfade at the seam, change the speed and pitch together like a tape machine, add distortion or bitcrushing, set the volume and fade the ends. Play the preview to hear the result as you change things, then save it as a WAV at the original sample rate or as an MP3 between 128 and 320 kbps. Saving as a lower-bitrate MP3 also works as a quick way to compress a file. Everything runs in your browser, so nothing is uploaded.

How to add effects to a sound

1. Choose an audio file up to 10 minutes long.
2. Switch on the effects you want and adjust them. Press Play to listen while you work, and switch to Original to compare.
3. Check Peak after effects. If it says the result clips, lower the gain or switch on Stop clipping.
4. Pick WAV or MP3 under Save, check the line under the button, then press Download WAV or Download MP3.

Preview a YouTube thumbnail in the feed before you upload

A thumbnail that looks good full screen in Photoshop can disappear at 168 pixels wide next to eleven other videos. This previewer drops yours into four layouts drawn at their real sizes: a desktop home feed with three or four columns, search results, the Up next list beside a video, and a phone feed. Switch between light and dark mode, check where the title gets cut, and swap between up to three versions of the thumbnail to see which one you notice first.

How to preview your thumbnail

1. Choose your thumbnail, or up to three versions of it.
2. Type the title and read the Title cut-off line. Channel, views, age and length are optional.
3. Pick a layout and a theme, and choose which videos sit around yours.
4. Press Shuffle position a few times and see how quickly you find yours.

What's real and what isn't

The layouts copy the proportions of a video feed, not YouTube's exact styling. Trending and Search fill the feed with real public videos from YouTube, and pressing a category chip or searching inside the feed changes them. When those aren't available, or you pick Placeholders, the videos around yours are generic tiles with made-up titles; My images uses thumbnails you've saved from channels in your niche, which stay on your device. The title cut-off is measured in the font and width on screen, so it can differ by a few characters from what a viewer's device shows. This tool can't tell you which version will get more clicks. Only real viewers can, which is what YouTube Studio's Test & compare is for.

Check a YouTube thumbnail before you upload it

This checker does two jobs. First it checks the file against YouTube's upload rules and separates what YouTube would refuse (under 640 px wide, over 2 MB from a phone or 50 MB from a computer, a file type such as WebP that the help page doesn't name) from recommendations like 16:9 and 1280 × 720. Then it shows how the picture reads when small: at real feed sizes, blurred like a scroll past, and in greyscale. The technical grade out of 100 comes from measurements, not AI: 20 points for YouTube's limits, 20 for contrast, 15 each for colour and sharpness, and 10 each for brightness, clutter and a clear bottom-right corner. It measures brightness, contrast (the spread of brightness values), colourfulness with the Hasler–Süsstrunk metric, average saturation, sharpness as Laplacian variance, how much of the image is edges, and whether the bottom-right corner, where the duration badge sits, holds detail.

How to check a thumbnail

1. Choose a thumbnail. Add up to two more versions to compare them.
2. Fix anything listed under Fix before uploading first. A high grade doesn't mean YouTube will take the file.
3. Look at the feed sizes and see if the idea survives at 120 and 168 px, blurred and in greyscale.
4. Open the grade's breakdown and the measurements, and decide which Checks matter for your style.

What the numbers can't tell you

The grade is a technical measure, not a prediction of clicks. None of this knows whether your thumbnail is interesting. It can't read the text on it, recognise a face or tell if the idea matches the title. Sharpness and edge counts are measured at 640 px wide so versions compare fairly, but a busy image can still work if it has one clear focal point. The small previews and the blurred glance are usually more useful than any number. GIFs are checked on their first frame.

The limits follow YouTube Help's “Add custom thumbnails on YouTube” page as of September 2026: 3840 × 2160 for videos with a minimum width of 640, 16:9, file types such as JPG or PNG, and a size limit of 2 MB when you upload from a phone or 50 MB from a computer. Custom thumbnails also need a verified YouTube account. This checker still treats 1280 × 720 as enough, because that is sharp at every feed size.

Free YouTube title generator, with type beat titles

Pick the video type, type the topic, and get twenty or more titles built from formulas people use on YouTube: how-tos, lists, reviews, challenges, comparisons and reactions. For producers there's a type beat mode that writes titles the way the type beat scene formats them, like [FREE] Artist Type Beat - "Name", with BPM, key and a producer credit when you add them. Every title shows its character count and a flag once it passes 60 or 70 characters. The first twelve show straight away; Show all lists the rest.

How to write a title with it

1. Pick the video type.
2. Type the topic, or the artist and beat details for a type beat.
3. Press Shuffle order to see them in a different order, and copy the ones you like.
4. Edit the best one so it says what's actually in the video.

Templates, not AI

These titles come from a fixed list of formulas written by hand, filled in with exactly what you typed. That makes them predictable: "How to {topic}" needs a topic like "mix vocals", while "{n} best {topic}" reads better with "studio headphones". If one comes out clumsy, that's the template meeting your wording, so edit it. YouTube allows 100 characters, but search results usually cut titles at around 60 to 70 and phones cut them sooner, so put the important words first. Try the result in the YouTube Thumbnail Previewer to see where it gets cut next to your thumbnail.

Write a YouTube description with chapters and hashtags

Paste in what you have (a summary, links, chapter times, credits, licensing terms, socials and hashtags) and this puts them in a sensible order with blank lines between sections. Timestamps are tidied into the "0:00 Title" format YouTube reads as chapters, hashtags go on the last line, and a counter tracks the 5,000-character limit. The preview shows roughly what appears before "…more", which is the part most people read.

How to build a description

1. Write a summary that says what the video is in its first sentence.
2. Open the sections you need (links, timestamps, credits, licensing, socials, hashtags) and leave the rest closed.
3. Read any warnings under the counter, especially about chapters. Make small changes straight in the finished description if you like.
4. Press Copy description and paste it into YouTube Studio.

Chapters, hashtags and the 150 characters

YouTube only turns timestamps into chapters when the first one is 0:00, there are at least three, and each chapter lasts at least 10 seconds. This tool warns you when those aren't met rather than inventing a 0:00 line. Only the first three hashtags go in, because those are the ones YouTube shows above the title. The "…more" cut is about 150 characters but moves with screen size, so treat the preview as a guide. Nothing here is written for you by AI; it only arranges what you typed.

Generate YouTube tags that fit the 500-character limit

Type the main topic and a few keywords and this builds a tag list from them: your exact phrases first, then the single words inside them, then longer versions ("how to …", "… for beginners"), then the spellings people type differently, like hip hop, hiphop and hip-hop. Turn on type beat tags and each artist gets "artist type beat", the year version, the "free" version and "artist instrumental". Duplicates are removed however they're capitalised.

How to make a tag list

1. Type the main topic and any keywords.
2. For beats, turn on Type beat tags and list the artists.
3. Remove any tag that isn't really about your video with its ×.
4. Press Copy tags and paste them into the Tags box in YouTube Studio.

How much tags matter, and how the count works

YouTube says tags play a small role in discovery and matter most for words people misspell, so the title, thumbnail and description do more work. Tags are still useful for type beats, where people search for the exact phrase. The counter follows YouTube Studio: each tag's characters, a comma between tags, and two extra for any tag with a space in it, because Studio wraps those in quotes. Tags that don't fit are listed separately under Don't fit, and Copy tags copies only the included ones. These tags are made from what you typed with fixed rules; there's no AI and no search-volume data behind them.

Thumbnail ideas for music producers, gamers, vloggers and more

Pick a niche and get a set of thumbnail concepts you can actually build: where things go in the frame, what the text says (never more than four words), which colours to use, what the face is doing, and one tip for keeping it readable at small sizes. The music production and type beat sets are written for producers, including what not to do, like using a photo of an artist you don't have rights to.

How to use an idea

1. Pick your niche and read through the concepts. Open one for its layout, colour, face and contrast notes.
2. Choose one that fits what actually happens in your video.
3. Make it, then check it at feed size in the YouTube Thumbnail Checker.
4. Drop it into the YouTube Thumbnail Previewer next to others from your niche.

Why the list is short

Each niche has six or seven ideas, written and checked by hand rather than generated on the spot, so Shuffle order reorders them instead of inventing new ones. They're written descriptions, not pictures: you make the thumbnail yourself. They're starting points, not rules. A thumbnail works when it matches the title and shows something the video delivers, and no list can know what that is for your video.