Turns scanned documents (TIFF, JPEG, PNG, PDF) into very small, sharp and optionally searchable PDF files using Mixed Raster Content - GUI and command line.
MRC PDF Kompressor converts scanned images into compact PDF files using Mixed Raster Content (MRC): the page is split into a high-resolution text mask (JBIG2, pattern-safe without character substitution), separate colour text layers for stamps and headings, and a smoothed, downscaled background (JPEG 2000 or JPEG). Typical results are 90-95 % smaller than the original scan while the text stays crisp. Optional text recognition (OCR, runs locally) adds an invisible text layer so the PDF becomes searchable. It also converts PDF files (e.g. from copiers) into small, searchable PDF/A, keeping existing text, links and bookmarks. Supports PDF/A-1b, -2b, -2u, -3b, -3u and PDF/A-4 output (validated with veraPDF), multi-page TIFF, batch processing of folders, custom profiles and a split-view GUI with live preview. The command line is fully scriptable (exit codes, progress, profiles). Free for private individuals and small businesses (PolyForm Small Business License).
MRC PDF Kompressor is polyform small business software from Daniel Kreutz. Check the publisher's license terms for pricing and usage rights.
What is the latest version of MRC PDF Kompressor?
The latest version is 4.3.0, released on Oct 13, 2026.
Is it safe to download MRC PDF Kompressor?
The download button links to the official installer published on kreutzweb.de, the same file Windows Package Manager installs. You can verify the downloaded file by comparing its SHA-256 checksum with 688a67f850a446baedf0458ed6d00367ae7f1e0b555eadc942c5fc8aac05e0f2.
Which Windows versions does MRC PDF Kompressor support?
MRC PDF Kompressor requires Windows 10 or later and is available for 64-bit (x64) systems.
How do I uninstall MRC PDF Kompressor?
Open Settings › Apps › Installed apps, find MRC PDF Kompressor and select Uninstall. From the command line, run winget uninstall --id=DanielKreutz.MRCPDFKompressor -e.
Is there a portable version of MRC PDF Kompressor?
Yes. MRC PDF Kompressor is available as a portable ZIP archive (mrc-pdf-kompressor-4.3.0.zip, 64-bit (x64)) that runs without installation. Copy it to any folder or USB drive and run it from there.
Alternatives to MRC PDF Kompressor
Other Document Management programs for Windows from different developers.
