The full catalog
TeraConvert supports 200+ file conversions directly in your browser and 871+ in total with the desktop app. Images, audio, video, PDFs, Office documents, eBooks, and archives. Nothing is ever uploaded.
Go straight to the most-used converters. Each runs locally with the same privacy guarantees as the full app.
How each family converts, what runs locally in the browser, and what falls back to the desktop app.
Convert photos and graphics between modern and legacy formats. The browser handles PNG, JPG, WebP, AVIF, BMP, ICO, and SVG natively. HEIC, TIFF, RAW (CR2, NEF, ARW, DNG), and PSD require the desktop app since the browser cannot decode them safely.
PNG . JPG . WebP . AVIF . HEIC . SVG . BMP . TIFF . RAW . PSD
Re-encode, trim, fade, and adjust volume on audio files. MP3, WAV, FLAC, AAC, and OGG run in the browser through Mediabunny and FFmpeg WASM. M4A, WMA, AC3, AIFF, and OPUS route to the desktop app where a native FFmpeg build owns the pipeline.
MP3 . WAV . FLAC . AAC . OGG . M4A . OPUS . WMA . AC3
Hardware-accelerated browser video conversion via WebCodecs for MP4, MKV, MOV, WebM, and TS. GIF export is supported in-browser too. AVI, FLV, WMV, 3GP, MPEG, MTS, VOB, and MXF route to the desktop app where FFmpeg ships the muxers the browser cannot.
MP4 . MKV . MOV . WebM . AVI . FLV . WMV . 3GP . MTS
PDF, DOCX, MD, HTML, and TXT all convert in the browser using pdf-lib, pdfjs, and mammoth. The desktop app adds Pandoc, LibreOffice, and macOS textutil to cover ODT, RTF, TEX, RST, and high-fidelity Office output.
PDF . DOCX . MD . HTML . TXT . RTF . ODT . TEX
CSV and TSV are first-class in the browser. XLSX, XLS, ODS, XLSB, and XLSM use the desktop app since accurate cell, formula, and chart preservation needs a full Office engine.
CSV . TSV . XLSX . XLS . ODS . XLSB . XLSM
Slides are desktop-only because the browser cannot render true PPTX or ODP layouts without a headless Office engine. The desktop app uses LibreOffice to produce faithful PDFs and image exports from PPTX, PPT, ODP, POT, and POTX.
PPTX . PPT . ODP . POT . POTX . PPS . PPSX
Convert between EPUB, MOBI, AZW3, FB2, and other reader formats with Calibre in the desktop app. EPUB-only operations stay in-app rather than touching a third-party service, which matters for DRM-free libraries you control.
EPUB . MOBI . AZW3 . FB2 . PDB . LRF . PRC . HTMLZ
ZIP, TAR, GZ, BZ2, 7Z, and RAR pack and unpack through a pure-Rust archive engine in the desktop app. Browser support is intentionally not exposed because archive decoding past a few hundred megabytes blows past safe heap budgets.
ZIP . TAR . GZ . BZ2 . 7Z . RAR
Most online converters upload your files to a server. We do not. Here is what that means in practice.
Web conversions happen in the browser tab using WebCodecs, Canvas, and WASM. Desktop conversions stay on your machine. No proxy server, no temporary cloud bucket, no analytics on file content.
The desktop app activates with one online check, then operates fully offline. Convert files on planes, in secure environments, or on isolated work laptops.
NDA-covered drafts, HIPAA-scoped scans, financial PDFs, RAW photo libraries. None of it touches a third-party service. You stay in control of your own compliance posture.
