Compress PDF to 500 KB
Half a megabyte suits a resume with a photo, a short scanned contract or a few pages of receipts. This page is set to 500 KB. Your file is compressed in your browser and never uploaded.
Your file is ready
- Files stay on your device. Nothing is uploaded.
- Free, no sign-up, no daily limit.
- Works with Wi-Fi off once the page has loaded. Check it yourself
Updated by Khokhar Sab
How do I compress a PDF to 500 KB?
Press Choose PDF files. The target is already set to 500 KB; change it if your limit differs. Press Compress to 500 KB. The tool compresses at several levels and keeps the clearest version that fits, then shows the before and after size. Press Download.
- Press Choose PDF files.
- Check that Target size says 500 KB.
- Press Compress to 500 KB.
- Check the new size, then press Download.
What fits in 500 KB?
At 500 KB a one-page scan keeps 150 dpi and three pages of photos fit at 120 dpi. Reports with charts usually fit without any change. The table shows our test files compressed to exactly 500 KB: 4 of 4 fit.
| Test file | Before | After | Fits 500 KB? |
|---|---|---|---|
| One-page scan (about 280 dpi) | 3.9 MB | 254 KB | Yes, at 150 dpi |
| Phone scan, 3 pages of photos | 12 MB | 227 KB | Yes, at 120 dpi |
| Report, 4 pages with chart images | 115 KB | 115 KB | Already under |
| Text-only report, 10 pages | 22 KB | 22 KB | Already under |
How to get a PDF under 500 KB
- Start with the default; most office documents fit with images barely changed.
- For scans of several pages, gray images keep text crisp and the file small.
- Combine receipts into one file with Merge PDF first, then compress once.
- Check the before and after table: if images are a small share, expect a small saving.
Why can't my PDF reach the size?
Compression shrinks images; it cannot shrink text, fonts and drawings much, and pictures can only lose so much detail before they become unreadable. A long scan in color may simply hold too much at 500 KB. Try black and white images, remove pages you do not need, or split the document into parts.
Other sizes
100 KB, 200 KB, 1 MB, 2 MB, for email, or any size with Compress PDF.
Frequently asked questions
Is it free?
Yes, with no sign-up, no daily limit and no watermark.
Is my file uploaded?
No. Compression runs in your browser, so the file stays on your device.
Does it lower quality?
Only images, and only as much as needed to fit. Text stays sharp.
Can I compress several files?
Yes. Each file is fitted to 500 KB on its own and you get one ZIP.
Will links and form fields still work?
Yes. Only images are re-encoded.
Related PDF tools
Learn more
How this tool was built and tested
- pdf-lib, Cantoo fork (MIT), version 2.11.1: reads the file and replaces images
- Test files: a one-page scan, a 3-page phone scan, a report with charts and a text-only report generated by the site build