Compress PDF files online, free
Reduce your PDF to the exact size you need — 100KB, 200KB, 1MB or anything in between. Fast, private, and processed entirely in your browser.
Free & unlimited · Works on Windows, Mac, iPhone & Android
Every way to compress & resize a PDF
One private, in-browser engine — whether you're shrinking to a target, padding up to a minimum, or switching units.
Compress PDF to KB
Reduce a PDF to an exact KB size — 50KB, 100KB, 200KB — for portals with tight limits.
Compress PDF to MB
Bring a PDF down to 1MB, 2MB, 5MB or 10MB for jobs, visas and admissions uploads.
Increase PDF Size
Pad a PDF up to a minimum size when a form insists on a larger file.
Compress PDF to an exact size
Hitting a strict upload limit? Pick the exact size you need and we'll compress your PDF to fit — right in your browser.
Need a size that isn't listed? Open the compressor and type any target in KB or MB.
Why compress a PDF in your browser?
Fast, private compression — no uploads, no waiting, no account required.
Why compress a PDF?
Most upload forms, email clients and government portals cap file size. Compressing a PDF gets it under the limit so it sends, uploads and shares on the first try.
Compress without losing quality
Our compressor optimizes images and strips waste while keeping text crisp and selectable. You hit the size you need with the best quality that fits.
Your files never leave your device
Compression runs entirely in your browser with WebAssembly. Nothing is uploaded, stored or seen by us — your documents stay private.
What people compress PDFs for
A smaller PDF goes through wherever there's a size limit. Here's where it helps most.
Email attachments
Beat Gmail, Outlook, and Yahoo attachment caps so your PDF actually sends instead of bouncing back.
Job applications & resumes
Fit your CV, cover letter, and portfolio under the upload limit on LinkedIn, Workday, and job boards.
Government & visa forms
Meet the strict KB limits on passport, visa, tax, and government portals that reject oversized files.
Online upload portals
University, exam, and registration sites often block large files — compress first and upload in one try.
Sharing on chat apps
Send PDFs over WhatsApp, Telegram, and Messenger faster — smaller files download in an instant.
Storage & archiving
Keep years of invoices, contracts, and scans without filling your drive or cloud storage quota.
Compress PDF — frequently asked questions
Is it really free to compress a PDF?
Yes — completely free and unlimited. There's no signup, no watermark, and no daily cap on how many PDFs you can compress.
Are my files uploaded to a server?
No. Compression happens entirely in your browser using WebAssembly. Your PDF never leaves your device, so it's safe for sensitive and confidential documents.
Can I compress a PDF to an exact size like 200KB?
Yes. Pick a preset such as 100KB, 200KB or 1MB, or type any custom target. The compressor tunes quality to land at or under the size you choose.
Will compressing reduce the quality of my PDF?
Text stays sharp and selectable. We optimize embedded images and strip hidden bloat, so most documents look identical while getting much smaller.
How do I compress a PDF on iPhone or Android?
Open this page in any mobile browser, tap 'Select PDF to compress', choose your file, and download the smaller copy. No app install needed.
Can I compress more than one PDF at a time?
Yes — add several PDFs and compress them in one batch to the same target size, then download each result.