Compress workspace
Compress PDFs while staying in control
Upload a PDF, choose the compression strength, check the previews, and queue the optimized file without leaving this page.
Drop a PDF here or click to upload
Compression happens locally so your file never leaves this browser tab.
Upload, Squeeze, Send—Done!
Compress PDFs in seconds with PurePDF. No installs, no watermarks, and your files stay local.
Upload heavy PDFs
Drop pitch decks, manuals, or research PDFs and we render previews instantly.
Choose savings level
Toggle between light, recommended, or extreme compression without re-uploading.
Queue optimized file
Send the new lightweight PDF to the download hub or into another PurePDF tool.
Need to ship oversized decks?
Compress here, then generate instant share links so teams stream the file online.
Why use our PDF compressor?
Lightweight files, privacy-first workflows, and fewer email bounces.
Local Ghostscript engine
Compression happens in your browser so regulated content never leaves your device.
Dial in the savings
Preview exactly how each mode affects file size and visuals before exporting.
Route files downstream
Send compressed PDFs into share, sign, or merge tools without another upload.
How it works
Compress PDFs with a simple three-step flow inside PurePDF.
Compress PDF files online for free
Upload, preview, and reduce file sizes without risking uploads to random servers.
Launch the compressorWhy free?
PurePDF keeps essential compression workflows free so teams can stay fast without expense approvals.
7.4 TB
Bandwidth saved this week
64%
Avg. file reduction
100%
On-device compression
Free tools built for the community
Switch between PurePDF utilities that pair perfectly with Compress PDF.
Merge PDF
Combine cleaned assets after shrinking large attachments.
Organize PDF
Reorder slides so the story stays tight before sharing.
Split PDF
Extract only the sections clients need to review.
Edit PDF
NewAnnotate or sign without exporting to another app.
Remove Pages
Delete filler spreads before recompressing.
Explore more articles on this topic
Practical tutorials and benchmarks to help you compress smarter.
Built for everyday collaboration
Share workspaces, keep permissions tidy, and stay private—without heavyweight enterprise stacks.
12,800+
Teams collaborating weekly
3 min
Avg. onboarding time
97%
Support satisfaction
1.4M
Automations triggered monthly
Why our customers love us
“We compress investor decks in the browser and ship links five minutes later.”
Chelsea Dyer
Startup COO
“Regulated PDFs stay local, yet we still hit the 5 MB attachment limits.”
Andre Miller
Healthcare Compliance Lead
“PurePDF replaced our clunky desktop compressor and onboarded the team instantly.”
Jordan Kim
Revenue Operations Manager
How to compress PDF files online
- 1
Add your PDF
Drop a document or browse locally to load previews and file stats.
- 2
Pick a compression mode
Switch between light, recommended, or extreme savings until the preview looks right.
- 3
Queue the optimized file
Send the compressed PDF to the download hub or jump straight into another PurePDF tool.
Frequently asked questions
Quick answers about compressing PDFs with PurePDF.
Will compression hurt text quality?
Text remains crisp. Only images are downsampled, and light mode keeps the highest fidelity.
Do files upload anywhere?
No. Ghostscript runs client-side so nothing leaves your browser.
Can I undo the compression?
Keep your original file handy. You can always rerun the tool with a lighter setting.
Where is my download?
Every export lands in the download workspace with the saved file size noted.
Keep every PDF lightweight with PurePDF
Launch any workspace instantly and keep shipping docs that are easy to send.