Compress PDF Files
Reduce PDF file size for easier emailing, uploading, and storage without visibly affecting quality.
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Shrink Large PDFs Without Losing Quality
Upload a PDF and get back a smaller file that's easier to email, upload, and store.
Upload Your PDF
Choose one or more PDF files from your device to compress.
We Compress It
Our server re-encodes the embedded images in your PDF to reduce file size while keeping the text layer untouched.
Download the Result
Download your compressed PDF directly, or as a zip if you compressed more than one file at once.
Built for Practical File Size Reduction
Everything you need to get a PDF under an upload or email limit.
Private Processing
Your file is uploaded over an encrypted connection and removed from our servers shortly after compression finishes.
Fast, Server-Side Compression
Compression runs on our servers using Ghostscript, so there's nothing to install and no waiting on your device's processing power.
Text Stays Sharp
Compression targets the embedded images inside your PDF, not the text layer, so scanned pages shrink the most while text documents keep their readability.
No Size Limit
Compress PDFs of any reasonable size with no daily cap and no subscription required.
Batch Compression
Upload several PDFs in one session and download all the compressed results together in a single zip file.
Cross-Platform
Works in any modern browser on Windows, Mac, Linux, and mobile devices, with no software to install.
Who Compresses PDFs
Common reasons people need a smaller PDF.
Job Applicants
Maria scanned her resume and certificates at a high resolution and needs the combined PDF under an application portal's upload limit.
Office Admins
David needs to email a 40-page image-heavy report to clients without hitting his company's attachment size cap.
Students
Priya has a folder of scanned lecture notes and wants smaller files that take up less space on her laptop and phone.
Frequently Asked Questions
Will compressing reduce the quality of my PDF?
Text stays sharp. Compression mainly targets embedded images, so documents with photos or scans will shrink the most, while text-only PDFs may shrink less.
Is there a file size limit?
You can compress PDFs of any reasonable size. Very large files may take a few extra seconds to process.
Is my file kept private?
Yes. Uploaded files are processed automatically and removed from our servers shortly after. We never share or inspect your documents.
Do I need to install anything?
No. Compress PDF runs entirely in your browser tab. No downloads, no sign-up, no browser extensions.
Can I compress more than one PDF at a time?
Yes. Upload multiple files in one session and we'll compress each one and package the results into a single zip file for download.
Is Compress PDF really free?
Yes. There is no cost, no subscription, and no account required. Compress as many files as you need.
Can I use Compress PDF on my phone?
Yes, the tool is fully responsive and works in any modern mobile browser on iOS and Android.
Why didn't my file get much smaller?
If your PDF is mostly text with few or no images, there's less room for compression to reduce, since the text layer itself is not degraded.