Video tools that respect your files — private, free, no upload

Compress videos, convert MOV to MP4, pull out audio, or flip subtitles
— entirely in your browser. Nothing leaves your device.

Compress a video Convert MOV to MP4

No sign-up · No watermark · Works offline after first load

Clapr compresses a 240 MB video down to 48 MB entirely in your browser

What is Clapr

Clapr is a browser-native toolkit for everyday video and audio chores. FFmpeg compiled to WebAssembly runs right inside your tab — so no file ever touches a server.

Runs entirely in your browser

Zero upload, zero retention

There's no server to upload to. We can't see, store, or train on your media — because it never leaves your computer.

No watermark, no sign-up

Free tools, clean output. No account required, no trial limits, no branded overlays on your videos.

Built for real workflows

Designed around the chores that eat your time: shrinking clips for chat, converting iPhone MOV, pulling audio for transcripts.

Why Clapr is different

Most online video tools upload your clip, queue it behind other users, slap a watermark on, and ask you to sign up. Clapr doesn't.

There is no upload endpoint. We couldn't read your files if we wanted to — the browser does all the work. You can even use Clapr with Wi-Fi off after the page loads.

How to use Clapr

Four steps. No account. Your file never leaves your device.

Pick a tool

Choose from compress, convert, extract audio, or subtitle conversion — all linked from the top menu.

Drop your file

Drag a video, audio, or subtitle file into the upload area. Up to 4 GB per file.

Choose a preset

Balanced is the safe default. Fast for smaller files. High for archival quality. Live ETA shown during processing.

Download

The output is a clean file you own and can share anywhere. The original stays untouched on your device.

All the video tools you need — in one browser tab

Every Clapr tool runs locally on your device. No upload, no watermark, no sign-up. Pick a tool to start.

Compress video

Shrink MP4 / MOV / WebM up to 80% smaller while keeping quality. Perfect for email, chat, and uploads.

MOV to MP4

Convert iPhone / Mac QuickTime MOV files to universal MP4 that plays everywhere.

Extract audio

Pull a clean MP3 or WAV audio track out of any video — great for podcasts, meetings, and transcripts.

Compress for TikTok

Preset-tuned output that lands comfortably under TikTok's 287 MB upload cap.

SRT to VTT

Convert SRT subtitle files to WebVTT, the format modern browsers and HTML5 players expect.

VTT to SRT

Convert WebVTT files back into SRT for editors like Premiere, DaVinci, and CapCut.

Frequently asked questions

Still have questions? Drop us a line at hello@clapr.app.

Stop waiting for uploads. Just drop your file in.

Clapr runs on your device. Pick a tool and try it — no account, no watermark, no time wasted.