PDF Tools
Compress PDF
Shrink heavy PDF files without losing quality. Choose a compression level, we re-render each page efficiently and you download a much lighter PDF — perfect for email, WhatsApp or publishing. Everything is local: your file is never uploaded.
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How to use Compress PDF
- 1Upload the PDF you want to make lighter.
- 2Choose a compression level (smaller, balanced or good quality).
- 3Download the compressed PDF and compare the size.
Features
- Multiple compression levels
- Re-renders pages via PDF.js with adjustable JPEG quality
- 50–80% typical reduction on image-heavy PDFs
- Runs locally with PDF.js and pdf-lib — no uploads
Supported formats
PDF → Compressed PDF
Frequently asked questions
How much can I reduce the size?
On image-heavy PDFs, reductions of 50–80% are common depending on the level you choose.
Is the text quality preserved?
Yes. Pages are re-composed with efficient compression; text stays readable and the file remains a standard PDF.
Is my PDF uploaded to a server?
No. Every step runs locally in your browser using PDF.js and pdf-lib.