Compress PDF
Shrink heavy files so they fit in email and chat uploads.
Your files stay on your device. Everything runs in this browser tab. Nothing is uploaded.
( How it works )
Compress PDF in three steps
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01
Drop the PDF you want to shrink.
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02
Pick a level: Lossless keeps text selectable, Balanced and Smallest work best on scans and photos.
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03
Compare the size before and after, then download.
( FAQ )
Good questions
How much smaller will my PDF get?
Scanned and photo-heavy PDFs often shrink by 70 to 90 percent on Balanced. Text-only files are usually small already, so savings there are modest.
Will the text still be selectable?
With Lossless, yes. Balanced and Smallest turn each page into an image, so text can no longer be selected or searched.
What if the compressed file is bigger?
The tool tells you, and Download gives you the original file instead, so you never end up with a worse version.
Are my files uploaded?
No. The tool runs entirely in your browser, so your file is processed on your own device and never sent to a server. Nothing is stored after you close the tab.
( Design notes )
Honest numbers
Compression is a trade. Instead of a vague quality slider, each option says what you give up: Lossless keeps text selectable, the other two turn pages into images.
The result shows before and after as bars, not just a percentage. If a level can’t beat the original, the tool says so and hands you the original file rather than a bigger one.
Lossless uses qpdf in a worker. The image levels render each page with pdf.js and rebuild the file with pdf-lib, all on your device.
( PDF tools )
More tools
Organize PDF
Merge files, reorder, rotate, delete or pull out pages, all on one canvas.
Sign PDF
Draw or type a signature and place it anywhere on the page.
Unlock PDF
Enter the password you already know and save a copy without it.
Protect PDF
Add a password so only the people you share it with can open the file.