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Free Online File Converters

Convert video, GIFs, images, and audio right in your browser. Powered by FFmpeg compiled to WebAssembly, so your files are processed on your device — never uploaded, never stored, never seen by anyone.

  • No upload — 100% private
  • Free forever
  • No watermark
  • No sign-up

Video converters

Re-encode video between formats so it plays anywhere — all on your device.

MOV to MP4 Turn iPhone and Mac QuickTime videos into MP4s that play on any device. WebM to MP4 Make screen recordings and web videos play in Premiere, iMovie, iPhone, and anywhere else. MKV to MP4 Make OBS recordings and Matroska videos play on phones, browsers, and editors. AVI to MP4 Modernize old camera footage and legacy videos so they play on any current device. MP4 to WebM Create open-format, royalty-free video for websites, HTML5 embeds, and web apps. MP4 to MOV Prepare video for QuickTime and Mac-native workflows in seconds.

GIF tools

Turn video clips into GIFs that autoplay anywhere, or shrink GIFs into tiny MP4s.

MP4 to GIF Trim, resize, and set frame rate to make high-quality GIFs for Discord, Slack, and docs. WebM to GIF Turn screen recordings into GIFs for GitHub READMEs, docs, and chat with trim and resize controls. GIF to MP4 Shrink giant GIFs by 90%+ into smooth, loopable MP4 videos for the web and social media.

Image converters

Switch between PNG, JPG, and WebP — for smaller files, transparency, or compatibility.

PNG to WebP Shrink images by 30%+ with transparency intact, and speed up your website's load time. JPG to WebP Compress photos 25–35% smaller for faster pages and better Core Web Vitals. WebP to PNG Open web-saved images in any editor or uploader that rejects WebP, transparency preserved. WebP to JPG Turn web images into universally compatible JPGs any app, form, or device can open. PNG to JPG Shrink screenshots and photos to a fraction of their size for easy sharing and uploads. JPG to PNG Get a lossless copy for editing, or satisfy tools and uploaders that require PNG format.

Audio extractors

Pull the audio track out of any video as MP3 or uncompressed WAV.

MP4 to MP3 Extract audio from video as MP3 at up to 320 kbps, with optional trimming, fully private. MP4 to WAV Extract uncompressed audio from video for editing, sampling, or transcription, fully private. WebM to MP3 Extract audio from screen recordings and web videos as MP3 that plays anywhere.

Converters that respect your files

Nothing is uploaded

Conversion happens in your browser via WebAssembly. Private recordings, client work, and confidential documents stay on your machine — there's no server to trust.

FFmpeg-grade quality

The same engine professionals use, including palette-optimized GIF encoding, H.264 with proper faststart, and quality controls on every conversion.

Actually free

No watermarks, no daily limits, no account walls. Ads on the page keep the tools free — the converters themselves never ask you for anything.

Frequently asked questions

How do these converters work without uploading my files?

Each tool runs FFmpeg — the industry-standard media engine — compiled to WebAssembly, directly in your browser. Your file is read locally, converted locally, and downloaded locally. No server ever sees it.

Which browsers are supported?

Any modern browser with WebAssembly: Chrome, Edge, Firefox, Safari, and mobile browsers. No extension or install is needed — the conversion engine downloads automatically the first time you convert (about 31 MB, cached afterwards).

Is there a catch — file limits, watermarks, sign-up?

No. Every converter is free with no watermarks, no account, and no conversion limits. Because processing happens on your device, the only practical limit is your browser's memory.