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Compress PDF
Shrink file size while keeping it readable.
🔒 On your device
How to use it
- Drop one PDF onto the upload area.
- Pick a quality preset: Screen (smallest), eBook (balanced) or Printer (best quality).
- Press Compress PDF and compare the before/after size before downloading.
Troubleshooting
The file barely got smaller.
Text-only PDFs are already compact — most savings come from images. Screen quality downsamples images; Printer only re-packs the file losslessly.
It says the file was already optimised.
Nothing beat the original, so the original was kept. That's the correct result — the PDF is already as small as it can get without damage.
Frequently asked
How much smaller will it get?
It depends on the file. Image-heavy PDFs shrink most. Pick Screen for the smallest result or Printer to preserve quality.
Is the file uploaded?
No — compression runs entirely in your browser.