Image formats
The browser converts PNG, JPG, WebP, AVIF, BMP, ICO, and SVG. HEIC, TIFF, RAW (CR2, NEF, ARW, DNG), and PSD need the desktop app; browsers cannot decode them.
PNG . JPG . WebP . AVIF . HEIC . SVG . BMP . TIFF . RAW . PSD
TeraConvert supports 189+ file conversions directly in your browser and 883+ in total with the desktop app. Images, audio, video, PDFs, Office documents, eBooks, and archives. Nothing is ever uploaded.
87 conversions in your browser · 195 more with the desktop app
Runs in native engines on your Mac.
Get the desktop appWhat runs in the browser and what needs the desktop app, per family.
The browser converts PNG, JPG, WebP, AVIF, BMP, ICO, and SVG. HEIC, TIFF, RAW (CR2, NEF, ARW, DNG), and PSD need the desktop app; browsers cannot decode them.
PNG . JPG . WebP . AVIF . HEIC . SVG . BMP . TIFF . RAW . PSD
MP3, WAV, FLAC, AAC, OGG, and M4A convert in the browser, with trim, fade, and volume edits. AIFF, WMA, AC3, and Opus outputs need the desktop app.
MP3 . WAV . FLAC . AAC . OGG . M4A . OPUS . WMA . AC3
MP4, MKV, MOV, WebM, and AVI inputs convert in the browser, GIF export included. FLV, WMV, 3GP, MPEG, MTS, VOB, and MXF need the desktop app's native FFmpeg.
MP4 . MKV . MOV . WebM . AVI . FLV . WMV . 3GP . MTS
PDF, DOCX, MD, HTML, and TXT convert in the browser. ODT, RTF, TEX, RST, and fidelity-exact Office output go through Pandoc and LibreOffice on the desktop.
PDF . DOCX . MD . HTML . TXT . RTF . ODT . TEX
CSV and TSV convert in the browser. XLSX, XLS, ODS, XLSB, and XLSM need the desktop app's LibreOffice engine for accurate cells, formulas, and charts.
CSV . TSV . XLSX . XLS . ODS . XLSB . XLSM
Slides are desktop-only; true PPTX and ODP layouts need a real Office engine. The desktop app renders PPTX, PPT, ODP, POT, and POTX to PDF through LibreOffice.
PPTX . PPT . ODP . POT . POTX . PPS . PPSX
EPUB, MOBI, AZW3, FB2, and other reader formats convert through Calibre in the desktop app, without your DRM-free library touching a third-party service.
EPUB . MOBI . AZW3 . FB2 . PDB . LRF . PRC . HTMLZ
ZIP, TAR, GZ, and BZ2 repack through a pure-Rust engine in the desktop app. The browser does not expose archives; large extractions blow past safe memory budgets.
ZIP . TAR . GZ . BZ2
Most online converters upload your files to a server; TeraConvert does not. Web conversions run in the browser tab, desktop conversions run in native engines on your Mac, and the desktop app works offline after one activation check. NDA drafts, medical scans, and RAW libraries never touch a third party.