A 500 KB cap leaves room for several scanned pages at a comfortable quality.
PDF Toolkit
Compress PDF to 500 KB
Get a multi-page PDF under 500 KB for portals, applications and email, with images recompressed only as much as needed. Everything happens in your browser.
The PDF is compressed on your device: nothing is uploaded.
Free, no signup, no upload — PDFs are processed on your device.
Compress to a size
Why it helps
Why use this for a 500 KB limit
Photos in reports and brochures are resampled to a sensible resolution rather than squashed.
Contracts and statements stay on your device the whole time.
How to use it
How to compress a PDF to 500 KB
1 Drop the PDF into the tool. Under 500 KB is already selected.
2 Press Compress and let it find the best quality that fits.
3 Compare a page before and after, then download.
Quick tips
Tips for a 500 KB limit
The more pages a scan has, the less room each page gets. Split out the pages you need if quality drops too far.
Real text stays sharp at any size, since only images are recompressed.
Use the comparison slider to check small print before sending.
FAQ
Compress PDF to 500 KB questions
How many pages fit in 500 KB?
It depends on what is on them. Text pages take little space, while each scanned or photo page takes much more. After compressing, the tool shows what is taking up the space.
Will it lower quality more than needed?
No. It keeps the best-quality setting whose file fits under 500 KB.
Is my PDF uploaded?
No. Everything runs in your browser.
Open the main PDF Toolkit page
This page focuses on one search intent. The main tool page includes the broader product overview, related workflows, and full use cases.