Private & local — files never leave your device

Bulk convert files in your browser

Optozap runs fully client-side. No uploads. Free with no limits. Just fast, secure conversions.

Convert anything

JPEG, PNG, WebP, GIF, HEIC, TIFF, ICO and more.

MP4 (H.264), WebM (VP9), MKV, MOV and GIF.

MP3, WAV, OGG/Opus, FLAC, AAC, M4A — all in-browser.

Documents

Coming soon

PDF, DOCX, MD, EPUB and more via coming soon.

Private & local

Your files never leave your device. Everything runs offline in your browser.

Fast by default

Runs directly in your browser, no uploading required.

No limits

Convert as many files as you need. No file size or rate limits.

Open & friendly

Simple, clean UI with quick and easy controls.

Do my files get uploaded?

No. Conversions run locally in your browser. You can even use it offline!

Which formats are supported?

Images: JPEG, PNG, WebP, GIF, HEIC, TIFF, ICO. Audio: MP3, WAV, OGG, FLAC, AAC, M4A. Video: MP4, WebM, MKV, MOV, GIF.

Can I convert multiple files?

Yes, you can bulk convert images, audio and videos into different formats.