Flatsonar

SafeTool PDF

by SafeToolHub

Privacy-first PDF optimizer — lossless and lossy compression

Broad permissions Unverified publisher GPL-3.0-or-later
Install Source code

About

SafeTool PDF optimizes and compresses PDF files using lossless and lossy compression techniques. All processing is done 100% locally on your machine — no cloud, no telemetry, complete privacy. Features: - Lossless optimization (pikepdf/QPDF): linearization, stream deduplication, object compaction — typically 5-20% savings - Balanced compression: image recompression at 150 DPI + font subsetting — typically 20-50% savings - Maximum compression: aggressive image downsampling + full Ghostscript rewrite — typically 40-80% savings - Custom presets with full control over DPI, quality, and stages - Batch processing for multiple PDF files - Detailed PDF analysis: images, fonts, forms, signatures, bookmarks

Permissions

2 permissions weaken the sandbox. Flatsonar asks before installing.

  • full access to your home folder
    --filesystem=home
  • X11 display: X11 lets apps read input and windows of other apps
    --socket=x11
  • inter-process communication (needed for X11)
    --share=ipc
  • Wayland display
    --socket=wayland
  • X11 display, only when Wayland is unavailable
    --socket=fallback-x11
  • GPU acceleration
    --device=dri

Who publishes this

Nobody has confirmed that the publisher controls this app id. Flatsonar warns before installing.

  • org.safetoolhub.safetoolpdf claims the domain safetoolhub.org; only its owner can prove that
    publisher:namespace

Maintenance

Recent activity on the upstream repository, or built and reviewed by Flathub.

No staleness signals: recent activity, or built and reviewed by Flathub.