Real comparison
See original size, final size, and percentage saved for each file.
Singularity Tools · PDF
Compress PDF online for free
Reduce document size before sending or archiving them. Control quality and see how much space you've saved.
- Lighter scanned PDFs
- Text preserved in automatic mode
- No files sent to the server
Upload your PDFs
Select one or more documents to compress.
Up to 10 files, 120 MB total and 500 pages.Selected documents
Choose how to compress them
The final size depends on the images and structure of the PDF. If the result is larger, we'll keep the original.
Results
A lighter PDF, with quality you choose
Protect text
The automatic mode does not convert into images documents with selectable text.
More PDFs at once
Compress multiple files and download them together in a single ZIP archive.
Frequently asked questions
Why isn't my PDF getting smaller?
Some PDFs are already optimized or contain mostly text and vector graphics. In this case, we keep the original file, avoiding increasing the size.
Does quality change?
“Keep text” preserves the page structure. “Reduce images” recreates pages as JPEG images; you can choose between high quality, balanced, and smaller file size.
Is the text still selectable?
Yes in “Keep text” and, for PDFs with text, in “Automatic”. No in “Reduce images”, because pages are converted into images.
Are files uploaded online?
No. Analysis, compression, and download happen directly in your browser.