Compress PDF to 500 KB
Get your PDF under 500 KB so it fits the limit you are up against.
Drop your PDF
or
PDF up to 100 MB
Stays on your device. This tool runs in your browser — nothing is uploaded.
Getting under 500 KB
Attachment limits are the usual reason for a specific target. Gmail stops at 25 MB, many government and university portals at 2 MB, and plenty of application forms at 500 KB or less.
This page pre-selects a compression strength suited to 500 KB so there is nothing to configure. Drop your file in and we will tell you the exact size you ended up with.
If a scanned document still will not fit, the fastest remaining option is to reduce the page count — extract only the pages you actually need to send.
Frequently asked questions
Can every PDF be compressed to 500 KB?
Not always. A short text document will drop well below 500 KB, but a long scanned file may not get there without removing pages. We tell you the exact size you ended up with, so you always know where you stand.
Will the text still be readable?
Yes. Text stays sharp and selectable. Compression works on document structure and image data, not on the text itself.
Is my file uploaded to a server?
No. Compression runs inside your browser, so the document never leaves your device.