wtfpdf

Compress a PDF

Make a PDF smaller. wtfpdf removes waste and packs the file tighter, and can lower the quality of images to save more.

Drop a PDF here

Your files stay on this device. Nothing is uploaded.

How to compress a PDF

  1. Drop your PDF on the box above, or choose it from your device.
  2. Under Quality, choose Keep quality, or Smaller file to also shrink photos and scans.
  3. For Smaller file, pick Smaller, Balanced or High quality under Images.
  4. Select Compress PDF. wtfpdf shows the size before and after, and the compressed PDF downloads to your device.

Private by design

Your file is never uploaded. The PDF engine runs in this browser tab and the result is saved straight to your device. You can check: open your browser’s network panel while you work and you will see no request carrying your file. After your first visit it even works offline. How wtfpdf works

Questions

Is my PDF uploaded when I compress it?

No. The file is compressed in this browser tab and saved straight to your device.

Can I compress a PDF without losing quality?

Yes. Keep quality removes unused data and stores the rest more tightly. Images are left as they are, so the PDF looks exactly the same.

How do I compress a PDF to under 1 MB?

Choose Smaller file, then Smaller. It stores photos at 96 dpi, which suits email and upload limits. wtfpdf cannot promise an exact size, since that depends on what is in the file.

What do Smaller, Balanced and High quality do?

They set how far photos and scans are scaled down. Smaller uses 96 dpi, Balanced 150 dpi and High quality 300 dpi, which is sharp enough to print.

Does Smaller file blur text?

No. Only photos and scanned images change. Text, fonts and drawings stay as they are, and screenshots and charts with few colours are left alone.

Why did my PDF hardly get smaller?

With Keep quality, a PDF that is mostly photos or scans may shrink only a little. Try Smaller file. wtfpdf never gives you a file larger than the one you started with.

Can I compress a password protected PDF?

Yes. wtfpdf asks for the password first, and the compressed file keeps the same protection.