What the tool changes
Ghostscript rewrites the PDF with its ebook-oriented profile and PDF 1.6 compatibility.
Compress PDF
Compress a PDF while keeping it readable. Learn how it works, what may change, and how to verify the result. Private temporary files expire after 6 hours.
◈ Encrypted transfer◷ Short retention⊘ No watermark◎ Works on every device
Compress PDF: the short answer
Compress a PDF while keeping it readable. Ghostscript rewrites the PDF with its ebook-oriented profile and PDF 1.6 compatibility.
What to know before you use Compress PDF
Compress PDF can affect quality, metadata, compatibility, or structure. The notes below show what to check in plain language.
What can go wrong
Embedded images can be downsampled; forms, signatures, accessibility tags, and print detail require review.
How to verify the result
Check searchable text, links, forms, page dimensions, and image clarity in the downloaded PDF.
A three-step Compress PDF checklist
- Before: Keep the source file and open it once to confirm that it is not damaged.
- During: Review every setting shown for Compress PDF instead of accepting a value you do not understand.
- After: Do not delete your original until you have opened the result and checked it against the notes above.
Compress PDF tip: Compare file size with how the document actually reads. A smaller PDF is only useful if the text, layout, and images still hold up.
Before using Compress PDF for important work, browse all file tools, read the file-format guide, or review how temporary uploads are protected.
How long the result stays available
Your Compress PDF result is stored for 6 hours unless you sign in and save it to your private library.
Compress PDF questions
Is my original file changed by Compress PDF?
No. Compress PDF creates a distinct output file; the source you uploaded is never modified.
What can go wrong when using Compress PDF?
Embedded images can be downsampled; forms, signatures, accessibility tags, and print detail require review.