Compress PDF to 500 KB.
Need a PDF under 500 KB for a form or portal with a tight limit? Drop it in and we downsample the images to hit the target while keeping your text sharp, uploaded privately and deleted after 1 hour. No watermark, no signup.
On-target
Auto-tunes image DPI
Text-safe
Only images shrink
Private
Deleted after 1 hour
How it works
- 01
Add your PDF
Drop in a .pdf, or click to browse. It's uploaded privately over TLS and deleted after 1 hour.
- 02
We aim for 500 KB
We downsample the embedded images to the highest resolution that still fits 500 KB, leaving your text and vector graphics untouched.
- 03
Download it
Grab the compressed PDF, ready for forms and portals with a tight 500 KB limit.
Other targets: 100 KB · 200 KB · 300 KB · 500 KB · 1 MB · 2 MB · 5 MB · 10 MB · any size · just make it smaller.
What 500 KB holds in a PDF
500 KB is 500,000 bytes. Page images are re-encoded from 220 dpi down to 32 dpi until one fits.
| Pages | Per page |
|---|---|
| 1 | 488 KB |
| 2 | 244 KB |
| 5 | 97.7 KB |
| 10 | 48.8 KB |
| 20 | 24.4 KB |
| 50 | 9.8 KB |
| 100 | 4.9 KB |
| 200 | 2.4 KB |
| 500 | 1.0 KB |
| Scan | 1 page | 10 pages | 50 pages |
|---|---|---|---|
| 220 dpi | 0.85 | 0.085 | 0.017 |
| 150 dpi | 1.84 | 0.18 | 0.037 |
| 100 dpi | 4.14 | 0.41 | 0.083 |
| 64 dpi | 10.11 | 1.01 | 0.20 |
| 32 dpi | 40.36 | 4.04 | 0.81 |
- Still over 500 KB at 32 dpi: you get the smallest version, marked over.
Common questions
Why 500 KB?+
Some government forms, job portals and older upload systems cap PDFs at 500 KB. This gets a scanned or image-heavy PDF under that tight limit in one click.
Will my text stay readable?+
Yes. We only reduce the resolution of embedded images. The text and vector graphics are kept as-is, so the document stays crisp and selectable.
What if it can't reach 500 KB?+
500 KB is a tight target. A text-only PDF may already be near it, and a very image-heavy one may not fit while staying legible. We give you the smallest safe version and tell you. Try 1 MB if you need more headroom.
Is my PDF private?+
It's uploaded over an encrypted connection, compressed on our server, and both the upload and the result are deleted after 1 hour. No account, no watermark.
Is there a watermark?+
No watermark and no signup. Scanned and image-heavy PDFs are exactly what this is built for.
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