Files Tools
File utilities that would normally demand an upload — audio transcription, video compression, archive extraction, Base64 encoding, code minification — running entirely on your device. The transcriber runs a real speech-recognition model in your browser; the video compressor runs FFmpeg compiled to WebAssembly. Your recordings and footage stay yours.
Which Files Tool Do I Need?
Runs OpenAI's Whisper model locally with timestamps, exportable as TXT, SRT, or VTT subtitles. Meetings, interviews, and voice notes never leave your machine.
FFmpeg in your browser, with a quality dial and MP4/WebM output. Screen recordings shrink dramatically.
Extract archives or bundle files into a ZIP without installing anything.
Encode text or files to Base64 (data URIs, email attachments, API payloads) or decode strings back — full unicode support.
Strips comments and collapses whitespace. Its sibling CSS Minifier took a 142 KB stylesheet down 28% in our benchmark.
Why These Tools Run in Your Browser
This category is where local processing earns its keep, because these are the heaviest and most sensitive files people handle: hour-long meeting recordings, screen captures of internal software, client deliverables. Uploading an hour of audio to a transcription service means a third party has your meeting. Running Whisper in your browser means the model comes to the audio instead of the audio going to the model.
The same WebAssembly foundation powers the video compressor (FFmpeg) and archive manager. First load fetches the tool's engine; after that, processing is limited only by your hardware — and a modern laptop transcribes faster than real-time.
Don’t take the privacy claim on faith — we published a network-level verification in the Privacy Audit and measured processing speed in the Speed Benchmark.
Frequently Asked Questions
How accurate is the transcription?
It runs Whisper, the same open-source model many paid services build on. Clear single-speaker audio transcribes very accurately; heavy crosstalk, strong accents, or poor microphones degrade any transcription, local or cloud. You can edit the result in place before exporting.
Why is the first use of the transcriber or video compressor slow?
The engine (a speech model, or FFmpeg compiled to WebAssembly) downloads to your browser on first use and is cached afterward. That download is the tool arriving — your file itself never uploads, which you can verify in the network tab.
What's the practical size limit for video compression?
Browser-based FFmpeg holds the file in memory, so a few gigabytes is the realistic ceiling on a typical laptop. Short-form video, screen recordings, and clips are the sweet spot; feature-length exports are better served by desktop FFmpeg.
Are password-protected ZIP files supported?
Extraction of standard ZIPs is supported; encrypted archives are not currently. Everything is processed in memory and nothing is retained after you close the tab.