Compression without the upload.

Most online video compressors work by sending your file to a server, crunching it there and sending it back. That is slow, it costs bandwidth, and it means a copy of your video sits on somebody else's disk.

ClipShrink does the same job on the other side of the wire: the encoder — a WebAssembly build of FFmpeg — is downloaded once and runs inside your browser tab. Your file is read into memory, re‑encoded with H.264, and handed back as a download. No account, no queue, no upload.

What it is good at

Screen recordings, phone clips, short talking‑head videos — anything you need to fit under an attachment limit or a chat‑app cap. A 10‑second 1080p clip typically drops by half on the balanced preset with no visible change.

What it is not

It is not a batch tool and it is not fast on long footage: a single CPU thread does the work, so an hour‑long 4K file will take a while and may exhaust browser memory. The input limit is 500 MB for that reason.

Built with

ffmpeg.wasm and plain HTML — no framework, no trackers, no cookies.