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FS PDF Compressor
What it is
FS PDF Compressor is a free desktop app that compresses PDF files locally with Ghostscript. Users can add one PDF, multiple PDFs, or a folder for batch processing. Balanced compression is the default, with two optional quality profiles. The app replaces an original only when the compressed result is smaller; Keep original mode can save a separate compressed copy instead. Files are processed on the computer, with no uploads, accounts, analytics, or telemetry. File actions are available in Finder, Windows Explorer, GNOME Files, and KDE Dolphin. An optional Drop Zone lets users start compression by dropping files onto a small desktop target. The app is listed for macOS, Windows, and Linux, and its Free plan is free. The macOS distribution is Developer ID signed and notarized by Apple. The Windows installer is unsigned and updates are manual; on Linux under Wayland, the Drop Zone cannot reliably stay pinned to the desktop layer. The app is released under the GNU Affero General Public License v3.0 or later.
For and against
For
- Processes files locally without uploads or accounts
- Accepts multiple PDFs or a folder
- Keeps the original if compression does not reduce size
- Adds actions to common file managers
- Free plan costs nothing
Against
- Windows installer is unsigned
- Windows updates are manual
- Drop Zone pinning is unreliable on Linux under Wayland
The verdict
FS PDF Compressor offers local batch processing and safeguards against replacing a larger original with a less useful result. Windows users should note the unsigned installer and manual updates, while Linux users under Wayland may find the Drop Zone unreliable.
Who it suits
FS PDF Compressor suits people who want to shrink PDFs on a desktop without uploading them. Batch processing and file-manager actions may help users who handle several files at once.
Plans and prices
Free
macOS 14+ on Apple Silicon · Windows 11 x64 · Linux x86_64
Read 3 Oct 2026 · github.com
On the record
- Batch processing
- Users can drag in one PDF, multiple PDFs, or a folder.github.com · read 3 Oct 2026
- Compression profiles
- The app uses Balanced compression by default and offers two optional quality profiles.github.com · read 3 Oct 2026
- File safety
- The app replaces an original only when the compressed result is smaller, and Keep original mode can save a separate compressed copy.github.com · read 3 Oct 2026
- Integrations
- The app adds file actions for Finder, Windows Explorer, GNOME Files, and KDE Dolphin.github.com · read 3 Oct 2026
- Intended users
- The maker describes it as a small, free PDF compressor for Mac, Windows, and Linux.github.com · read 3 Oct 2026
- License
- The app is released under the GNU Affero General Public License v3.0 or later.github.com · read 3 Oct 2026
- Linux limit
- Under Wayland, the app cannot reliably pin its Drop Zone to the desktop layer.github.com · read 3 Oct 2026
- Privacy
- PDFs are processed locally, with no uploads, accounts, analytics, or telemetry.github.com · read 3 Oct 2026
- Purpose
- FS PDF Compressor compresses PDF files locally with Ghostscript.github.com · read 3 Oct 2026
- Quick access
- An optional Drop Zone lets users compress PDFs by dropping them onto a small desktop target.github.com · read 3 Oct 2026
- Security
- The macOS distribution is Developer ID signed and notarized by Apple.github.com · read 3 Oct 2026
- Support
- The maker invites users to report issues on GitHub and accepts optional PayPal donations.github.com · read 3 Oct 2026
- Windows limit
- The Windows installer is currently unsigned and updates are manual.github.com · read 3 Oct 2026
