Compress PDF
Reduce PDF file size instantly. Free, no limits, no watermarks.
Compression level
How to Compress a PDF File
- Upload your PDF by dragging it into the upload area or clicking to browse.
- Choose a compression level: Low for best quality, High for smallest file size.
- Click Compress PDF and wait while your browser processes the file.
- Download your compressed PDF — no account or email required.
Frequently Asked Questions
How much can I reduce a PDF file size?
Results vary depending on the PDF content. Image-heavy PDFs (scanned documents, photo PDFs) typically see 40–80% reduction. Text-only PDFs see less reduction since text is already compact.
Will compression reduce the quality of my PDF?
At Low and Medium compression levels, the quality difference is barely noticeable for most documents. High compression will visibly reduce image quality but produces the smallest file size.
Is my file safe when I compress it?
Yes. PDFInSnap compresses your PDF entirely inside your web browser. The file is never sent to any server — it stays on your device throughout the process.
Why is my compressed file larger than the original?
This can happen with text-only PDFs or PDFs that already use efficient compression. In that case, try a higher compression level or use the original file as-is.
Is there a file size limit?
No. PDFInSnap has no file size limits. Very large PDFs may take longer to process depending on your device's speed.