Free online video tools that never upload your footage
Compress, trim, crop, rotate, convert or mute a video without uploading it: these tools run ffmpeg compiled to WebAssembly inside your browser, so the footage never leaves your device. The screen, webcam and voice recorders are local too.
Honest expectations: your machine does the encoding, so a long 4K video takes longer than on a fast server and very large files can hit the browser's memory limit. For most phone clips, screen recordings and social media edits, it is fast, private and free.
All 17 tools in this category
- Compress videoReduce video file size via in-browser H.264 re-encode. No upload, no server.
- Merge video filesConcatenate multiple video files (MP4, MOV, WebM…) into one. Fast copy or re-encode. No upload.
- Rotate videoRotate or flip a video (90°/180°/270°, horizontal/vertical) directly in your browser. No upload.
- Crop videoCrop a video to a rectangle or an aspect ratio (1:1, 16:9, 9:16…) in your browser. No upload.
- Resize videoResize a video to a resolution preset (1080p/720p/480p), a percentage, or an exact custom size, in your browser. No upload.
- Video speedSpeed up or slow down a video (0.25x-4x) while keeping the audio pitch, directly in your browser. No upload.
- Reverse videoPlay a video backwards, picture and sound, directly in your browser. No upload.
- Video converterConvert video between MP4, WebM, MKV and MOV (H.264/VP8) in your browser. No upload.
- Add audio to videoAdd or replace the soundtrack of a video with an audio file, in your browser. No upload.
- Screen recorderRecord your screen in your browser. Nothing is uploaded.
- Webcam recorderRecord your webcam and mic in your browser. Nothing is uploaded.
- Trim videoCut a video to a start/end time range directly in your browser. Fast stream copy or precise re-encode. No upload.
- Mute videoRemove the audio track from a video (silence it) directly in your browser. No upload.
- Video to GIFConvert a video clip into an animated GIF directly in your browser. No upload.
- GIF MakerTurn several images into an animated GIF.
- GIF to video (MP4)Convert an animated GIF into a small MP4 video directly in your browser. No upload.
- Extract video framesExtract still frames from a video as PNG or JPG images directly in your browser. No upload.
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Frequently asked questions
How can a video be converted without uploading it?
The site ships ffmpeg, the standard open-source video engine, compiled to WebAssembly. Your browser downloads the engine once (about 30 MB) and runs it locally; the video itself never goes anywhere.
Is there a file size or duration limit?
There is no artificial quota. The practical limit is your device's memory: browsers comfortably handle files up to roughly 2 GB. Very long or very high-resolution videos simply take more time.
Are the screen and webcam recorders private?
Yes. They use your browser's built-in MediaRecorder: the recording is written to your device's memory and saved as a local download. Nothing is streamed or stored on a server.