home  /  tools  /  batch-convert-files-offline

Batch File Conversion — 200+ Formats, Fully Offline

Drop a folder of mixed files into MiniMax Converter and convert hundreds at once. Images, documents, PDFs, audio, video, archives, ebooks, fonts, 3D meshes, GPS data, calendar/contact files — 200+ formats supported. Processing runs in parallel across CPU cores; the whole job is cancellable mid-flight.

Batch File Conversion — 200+ Formats, Fully Offline — screenshot

Categories supported

Images (68 formats): JPG, PNG, WEBP, BMP, TIFF, GIF, SVG, HEIC, AVIF, ICO, PSD, EPS, DICOM, plus 26 camera RAWs (CR2, NEF, ARW, …). Documents (25+): PDF, DOCX, ODT, RTF, TXT, HTML, EPUB, TEX, MD, IPYNB, Apple iWork. Audio (25 in, 17 out): MP3, FLAC, WAV, OGG, M4A, OPUS, AAC, WMA, AIFF, … Video (24): MP4, MKV, AVI, MOV, WMV, FLV, WEBM, M4V, … Archives (30+): ZIP, 7Z, TAR.GZ/BZ2/XZ, RAR (read), ISO, DEB, RPM, CAB.

How batch mode works

  1. Drop a folder onto MiniMax Converter.
  2. The folder-summary screen classifies every file by type (audio / video / image / document / archive / other) and offers one button per non-empty category.
  3. Click the category you want to convert and pick your output format.
  4. Conversion runs in parallel across your CPU cores. Progress bar shows aggregate progress + completed/total counter; Cancel mid-job is supported.

Why offline?

Online converters cap file sizes, throttle bandwidth, queue you behind paying users, and require an upload per file. A 5 GB folder of TIFFs would take half a day uploaded. Local conversion runs at SSD speed and your files never leave the machine.

Questions and answers

How many files in parallel?

CPU core count minus 2 (so the OS stays responsive). On an 8-core machine that's 6 conversions at a time; on a 16-core, 14.

Can I mix formats in one batch?

Drop mixed files and the dispatcher classifies them per type. Each category gets its own one-click batch.

What about videos with subtitles?

Subtitles are extracted as sidecar .srt files (one per language) without re-encoding the video stream. Or burn them in if you prefer.

Does it handle camera RAW files?

Yes — 26 RAW formats supported via dcraw. Convert NEF / CR2 / ARW / DNG / … to JPG, PNG, TIFF.

Related tools

Get MiniMax Converter

Cross-platform desktop app. Linux free for non-commercial use; Windows & macOS one-time €20 license. No subscription, no telemetry, no account.

Download Buy license €20