Free PDF Compressor
Shrink the size of a PDF for email, uploads, and forms — with three quality levels.
Select PDF file
or drag and drop a PDF here
PDF files only — up to 50 MB. Processed locally in your browser; nothing is uploaded.
How to use the Compress PDF
- Select or drop the PDF you want to shrink.
- Pick a compression level — Recommended suits most documents.
- Click Compress PDF and save the smaller file.
Good to know
- This tool re-renders each page as an optimized image. That shrinks photo- and scan-heavy PDFs dramatically, but text will no longer be selectable or searchable, and links and form fields are flattened.
- A PDF that is mostly crisp text may not shrink much — and can occasionally grow. The result message always shows the honest before/after size.
- Processing is 100% local: nothing is uploaded, and big files are limited by your device's memory.
Frequently asked questions
Why did my PDF get bigger?
Text-based PDFs are already compact. Re-rendering them as images can increase size — the tool tells you the real before/after so you can keep whichever file is smaller.
Will the quality be good enough to print?
Choose Less compression for print-quality results. Extreme is meant for screen viewing and email attachments.
Are my files uploaded for compression?
No. Compression runs entirely in your browser.