Trim WebM Video
Cut and trim WebM video files — no re-encoding, instant results. Free, private, no upload.
Trim any WebM video instantly without re-encoding. Drop your WebM file, set the start and end with the visual timeline, and download. Everything runs in your browser — no server, no upload.
No data transfer — all data stays on your device!
About WebM Trimming
WebM is an open, royalty-free video format using VP8/VP9 video with Vorbis/Opus audio. This tool trims WebM files using FFmpeg WebAssembly with stream copy for near-instant, lossless trimming — your video is never re-encoded or uploaded.
Features
Near-Zero CO₂
Server-based converters upload your file, process it remotely, and send it back — consuming network and data-centre energy on every request. WebConverter runs entirely on your device, so the only energy used is your local CPU. No data transfer, no server electricity.
Install for Offline Use
WebConverter works offline as a Progressive Web App. Click "Add to Home Screen" on mobile or the install button in your browser's address bar. Once installed, you can convert files without any internet connection.
