muunna.
Convert your files effortlessly. All processing happens locally on your device — no file size limits, no ads, no tracking.
Price
Free
Turnaround
~1 hour
What we deliver
- Browser-based file converter at muunna.vaivatta.fi — nothing to install
- 250+ supported formats across images, audio and documents (PNG, JPEG, WebP, AVIF, HEIC, MP3, FLAC, WAV, OPUS, PDF, DOCX, EPUB and more)
- 100% local processing — files are converted on your device via WebAssembly and never uploaded
- No file size limits — constrained only by your device's memory
- Batch conversion — drop multiple files or a zip, convert everything, download all as .zip
- Bilingual interface (Finnish/English), auto-detected from browser settings
- Installable as a PWA, with light and dark themes
- No ads, no tracking, no account required
- Open source (AGPL-3.0), code on GitHub