Video

For a single excerpt, use Video Trim: set the IN and OUT points while watching the preview and it writes that span out as an MP4. To break one file into several pieces, Video Split lets you drop cut points on the timeline and produce up to five clips.

Both copy the existing video stream instead of re-encoding it. Nothing is lost in quality and the job finishes orders of magnitude faster than compression would. The trade-off is that cut points snap to the nearest keyframe, so the boundary can land a few frames off — this is not the tool for frame-exact editing.

Video Screenshot lets you play a video and grab whatever frame you like as a PNG. Playback, seeking, speed control (0.25×–2×), and the frame export itself all work in Chrome, Edge, Safari, and Firefox alike.

If you already know the timestamps — 00:15, 01:30, and so on — Extract Frames is faster. Enter several timecodes and it writes out all the matching frames as PNGs at once, which is handy for building documentation or turning a video walkthrough into a written procedure.

Extract Audio pulls only the audio track out of a video, as either MP3 or WAV. MP3 is encoded at a high-quality variable bitrate, which keeps the file small while staying well above what speech needs. WAV is uncompressed 16-bit PCM — nothing is lost, and it is the easier input for transcription services and audio analysis tools.

Typical uses: lifting the audio from a meeting or interview recording before transcribing it, or turning a recorded talk into something you can listen to on the move.

When a file will not fit into an email or a chat message, use Video Compress. You choose a compression level and a resolution independently. The level maps to a quality target (CRF): lighter compression keeps more detail, heavier compression makes a smaller file. Pick "keep quality" when you only want to change the resolution with essentially no visible loss.

Resolution options are original, 1080p, 720p, and 480p. If the target is larger than the source, nothing is upscaled — it simply stays at the original size. Vertical phone footage keeps its aspect ratio while being fitted to the chosen height.

Output is H.264 video with AAC audio, so the resulting MP4 plays practically everywhere. Drop in several videos and they are compressed in one run and returned as a ZIP. Do note that compression re-encodes every frame, so it takes far longer than trimming or splitting — cutting the section you need first will save you a lot of waiting.

Every tool here loads an engine built by compiling FFmpeg — the standard workhorse of video processing — to WebAssembly. The engine itself is about 30 MB: it is downloaded once, cached afterwards, and reused for the rest of your session. The engine comes over the network, but the video you select does not go anywhere. All processing happens in WebAssembly memory on your device.

The engine is the single-threaded build, so it needs no SharedArrayBuffer and runs wherever WebAssembly does. Current Chrome, Edge, Safari, and Firefox are all verified, Safari on iOS included. It does lean on the device's CPU and memory, so processing can be slow on phones and older machines, and very long videos can exhaust memory.

FFmpeg.wasm loads the whole file into WebAssembly memory before it starts, and typically needs two to three times the file size in RAM — so what you can handle depends on your device. Above roughly 150 MB on a phone or 400 MB on a computer, the tools warn you that the run may fail.

Encoding in WebAssembly is also slower than a native app. Compressing a long video end to end can easily take several minutes. Trimming to the section you actually need first, or dropping the resolution to 720p, brings that back to a reasonable wait. Keep the tab open while it runs — the work is happening inside the page, so navigating away cancels it.