42 free tools
Free Online Tools
Quick utilities for the unglamorous half of making things: format conversion, resizing, compression, colour, audio. Every one of them runs on your own device, so your files never leave it.
- Runs in your browser
- No signup, no watermark
Image tools
21 tools
- Image ResizerResize images to any width or height in your browser, keeping the aspect ratio, with no upload and no watermark.
- HEIC to JPGConvert the .heic photos your iPhone saves into ordinary JPGs, right here in your browser. Batch a whole camera roll, and nothing is ever sent to a server.
- WebP to PNGTurn WebP files into PNG right here in your browser, with transparency intact and nothing sent to a server.
- WebP to JPGConvert WebP images to JPG in your browser, choose the quality and the colour that replaces transparency, and download without uploading anything.
- Collage MakerArrange your photos into a clean grid collage in your browser, choosing the columns, cell shape and spacing, with nothing uploaded.
- Image CompressorCompress JPG, PNG and WebP images in your browser, choosing the quality yourself and seeing exactly how many bytes you saved.
- PNG to JPGConvert PNG images to JPG in your browser to cut the file size, with control over quality and the colour that fills in transparency.
- HEIC to PNGTurn an iPhone .heic photo into a lossless PNG in your browser. The right choice when the image is going into an edit, and the wrong one for a camera roll.
- SVG to PNGRasterize SVG files to PNG at any size you choose, in your browser, with transparency kept and no upload.
- AVIF to JPGConvert AVIF images to JPG in your browser so software that has never heard of AVIF can finally open them.
- JPG to PNGConvert JPG images to lossless PNG in your browser, ready for editing pipelines that need a format which does not degrade on every save.
- AVIF to PNGConvert AVIF images to lossless PNG in your browser, keeping transparency and giving you a file every editor will open.
- Flip ImageMirror an image horizontally or vertically in your browser, in batches, with the original format kept and nothing uploaded.
- Image ConverterConvert between PNG, JPG, WebP, AVIF, GIF, BMP and SVG in your browser, picking the output format yourself, with nothing uploaded.
- PNG to ICOTurn a PNG into a real multi-resolution .ico favicon containing 16, 32 and 48 pixel versions, built in your browser.
- Favicon GeneratorTurn one image into the complete favicon set in your browser, .ico plus every PNG size, a web manifest and the markup to paste.
- Image SplitterCut one image into an even grid of tiles and download them as a zip, named by row and column so you know the posting order.
- Pixelate ImageBlur out a face, a plate or a screenshot by pixelating it in your browser, with the block size under your control and no upload.
- PNG to WebPConvert PNG images to WebP in your browser to cut page weight, keeping transparency and choosing your own quality level.
- JPG to WebPConvert JPG images to WebP in your browser and typically cut 25 to 35 percent of the file size at the same visual quality.
- Rotate ImageTurn an image 90, 180 or 270 degrees in your browser, in batches, keeping the original format and uploading nothing.
Video tools
1 tool
Audio tools
15 tools
- MetronomeA steady metronome in your browser with tap tempo and accented downbeats, scheduled on the audio clock so the beat never drifts.
- MP4 to MP3Pull the audio track out of an MP4 and write it as an MP3, entirely inside your browser. The video never leaves your device, and there is no queue to wait in.
- Mic TestCheck that your microphone works and is at the right level, with a live meter and a peak reading, without recording or uploading anything.
- Video to MP3Turn any common video file into an MP3 without leaving the page. MOV, MKV, WebM, AVI and a dozen others are read directly by your browser, and none of them get sent anywhere.
- BPM FinderFind the tempo of any audio or video file in your browser, with tap tempo as a fallback and an honest confidence figure.
- M4A to MP3Convert M4A files, including iPhone voice memos, to MP3 in your browser. Pick the bitrate you want and the file stays on your own machine the whole time.
- MP3 to WAVDecode an MP3 into an uncompressed WAV in your browser, at the original sample rate. Useful for software that only reads WAV, and honestly useless for quality.
- WAV to MP3Encode a WAV into an MP3 roughly a tenth of the size, in your browser, at the bitrate you choose. This is the one direction where the conversion is genuinely worth making.
- Online Voice RecorderRecord your voice in the browser with a live level meter and download the file, with nothing uploaded and no account needed.
- Tone GeneratorGenerate a pure tone at any frequency from 20 Hz to 16 kHz in your browser, with four waveforms and the nearest note name shown.
- Audio ConverterConvert between MP3, WAV, M4A, OGG, Opus and FLAC in your browser, or pull the audio out of a video. Pick the output, pick the bitrate, and nothing gets sent to a server.
- MP4 to WAVExtract the audio from an MP4 as uncompressed WAV, in your browser, at the original sample rate. This is the format transcription tools and editors actually want.
- OGG to MP3Convert OGG Vorbis files to MP3 in your browser, which is what game audio and older open-source recordings usually need before anything else will play them.
- FLAC to MP3Encode your lossless FLAC library into MP3 for a phone, a car or a player that will not read FLAC, at up to 320 kbps and without the files leaving your machine.
- Audio CompressorMake an audio file smaller by re-encoding it at a lower bitrate, in your browser. This changes the file size, not the dynamics, which is a different thing entirely.
Creator utilities
5 tools
- Color Palette GeneratorPull a colour palette out of any image in your browser, with hex, RGB and HSL for every swatch and a click to copy.
- Aspect Ratio CalculatorWork out the missing width or height for any aspect ratio, from 16:9 and 9:16 to the cinema ratios, with no maths and no sign-up.
- RGB to HexPaste any RGB value and get the hex code back instantly, along with HSL, HSV and CMYK, all computed in your browser.
- Contrast CheckerCheck any two colours against every WCAG 2.1 threshold at once, with a live preview of real text, computed in your browser.
- Hex to RGBPaste a hex colour and get the RGB channels back instantly, along with HSL, HSV and CMYK, computed entirely in your browser.
Files you drop here are processed by your own browser. Nothing is uploaded and nothing is stored on our servers — the tools keep working even if you lose your connection after the page has loaded.