PDF komprimieren
Dateigröße um bis zu 60 % reduzieren mit intelligenter Bildoptimierung
Vollständig in deinem Browser verarbeitet. Kein Datei-Upload.
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Häufig gestellte Fragen
- How does PDF compression work?
- The tool re-encodes images inside your PDF at lower (but still high-quality) resolutions, removes embedded font duplicates, and optimises object streams. The result is a smaller file with virtually identical visual quality — typically 40-60% smaller than the original.
- Is there a file size limit?
- Free users can compress files up to 10 MB, Core subscribers up to 100 MB, and Pro subscribers up to 200 MB. Larger files are technically possible but performance depends on your device's available memory.
- Is my PDF uploaded to a server?
- No. Compression runs entirely in your browser using WebAssembly. Your PDF never leaves your device. You can verify this by disconnecting from the internet — the tool still works.
- Can I compress multiple PDFs at once?
- Free users compress one file at a time. Pro subscribers can batch-process multiple PDFs in a single session and download them all in a ZIP.
- Is this tool free?
- Yes — fully free with no account required. Paid plans add larger file sizes, batch processing, and priority support.
- Does it work on mobile?
- Yes. The compression tool runs in any modern browser including Safari on iOS and Chrome on Android. Performance is naturally slower on mobile devices but the tool works the same way.
- How much smaller will my PDF be?
- Typically 40-60% smaller, depending on what's inside. Image-heavy PDFs (scanned documents, presentations) compress the most. Text-only PDFs see smaller savings since text is already efficiently encoded.