Convert, crop, rotate, watermark, and resize images, make favicons and QR codes, read text from images, and strip EXIF data, all in your browser.
All 52 image toolsConvert, trim, crop, rotate, mute, and speed up videos, extract frames, convert subtitles, and compress for sharing, without uploading your files.
All 20 video toolsConvert between MP3, WAV, M4A, FLAC, and OGG, extract audio from video, trim, merge, and adjust volume, all in your browser.
All 16 audio toolsMake GIFs from video or images, compress them, add captions, convert GIF to MP4, and reverse, resize, speed up, or split animated GIFs in your browser.
All 12 gif toolsMerge, split, sign, and compress PDFs, extract text, convert JPG or PNG to PDF, and export pages as images, all in your browser with no upload.
All 9 pdf toolsMinecraft skin editor with 3D preview, sprite and pixel art editor, seamless noise and normal map generators, sprite sheets, and DDS and TGA texture converters, all in your browser.
All 23 game dev toolsHourly to salary, take-home pay after tax, overtime, raises, freelance rates, tips, budgets, loan and mortgage payments, and compound interest. Instant, private, in your browser.
All 15 calculator toolsPhoto: JPG, or WebP for a website. Screenshot, logo, transparency: PNG. Logo that has to scale: SVG. Animation: GIF, or WebP where it is only for the web. Icon: ICO.
Anything that has to print or look identical everywhere: PDF.
Sharing: MP3. Editing: WAV. Keeping a lossless copy: FLAC. Came off an iPhone: M4A, convert if it will not play.
Sharing or uploading: MP4. Came off an iPhone: MOV, convert to MP4 if it will not play. Web page: WebM. Keeping everything, subtitles included: MKV.
Handing the file to someone, or uploading it: SRT. Video on your own web page: VTT. Styling, positioning, or karaoke: ASS.
Shipping in a game: DDS with mipmaps. Source art for an engine or a mod: TGA or PNG.
Why the files stay on your device
The usual converter uploads your file to a server, queues it, processes it, and sends it back. That is why those sites need accounts, size limits, and a reason to keep your photos around. Browsers can run compiled code at close to native speed now, so this site ships the real engines instead: libheif for iPhone photos, FFmpeg for video and audio, pdf.js for PDFs, and Rust code I wrote for GIFs, game textures, and tracing pictures into SVG, all compiled to WebAssembly and loaded into your tab. The file is read into memory, processed there, and handed back as a download.
The trade-off is that heavy jobs use your processor rather than a data center: re-encoding a long 1080p video takes a few minutes on a laptop. Everything else is faster than an upload-based service, because there is no upload. It works in current Chrome, Edge, Firefox, and Safari, on desktop and phones, and once an engine has been downloaded the tool keeps working offline.
If something you need is missing, write an email and I will take a look at building it.