Browser workbench
Compress PDF
Shrink many PDFs by rebuilding them with optimized structure — locally in your browser.
Steps
How to use this tool
Four quick steps — same pattern on every live PDF page.
- 01
Upload PDF
One file at a time.
- 02
Optimize
We rebuild the document in-browser.
- 03
Compare
Check the size difference after processing.
- 04
Download
Save the compressed PDF.
Trust
Why use Peraspera Tools
Honest scope
Best for bloated exports — not lossy re-scanning.
Local processing
Your file stays on your device.
Quick pass
One click to optimize structure.
Use cases
Good for
Email limits
Try shrinking before sending attachments.
Archive cleanup
Leaner copies for storage folders.
Form exports
Trim overhead from automated PDF generators.
Details
What this tool does
- Uses PDF object streams where possible
- Does not downscale embedded photos aggressively
- 25 MB max per upload
Compression results vary. Scanned PDFs with large images may need dedicated image compression tools for big savings.
Processing runs locally in your browser tab.
Overview
What this PDF tool does
Clear, task-focused — whether you searched merge, split, convert, or compress.
Compress a PDF online to reduce file size for email and uploads. This PDF compressor rebuilds document structure in your browser — best for bloated exports; scanned books may need image-heavy workflows for extreme shrink.
More tools
Related tools
Privacy on this page
Compress PDF runs in your browser when you use this page. We do not upload your PDF to our servers for processing. Read how that works in our privacy policy.
Answers
FAQ
- How much smaller will it get?
- Depends on the source — structured exports often shrink more than scans.
- Will quality change?
- We rebuild structure; page content is not intentionally degraded.
- File size limit?
- 25 MB per upload on this page.
- Uploaded to your server?
- No — compression runs locally.
- How to reduce PDF file size for email?
- Run compress on this page, compare the new size, then attach the smaller download if it fits your limit.
- Compress PDF without losing quality?
- We optimize structure rather than aggressively downscaling photos; results vary by how the PDF was created.