Compress a PDF to under 500 KB
Under 500 KB, as the upload form asks.
Drop files here
or click to choose from your deviceAccepted: PDF
One file per runUp to 20 MB per file5 runs per dayFree PDFs end with a small “Made with nouplo.com” lineRemove limits with Pro✓ Works offline
Your files stay on your device
This tool runs entirely in your browser. Nothing is uploaded, nothing is stored, and you can even turn off your internet connection before you start.
Example
Worked example — Compress PDF to 500 KB
Use the following inputs and settings.
| Item | Value |
|---|---|
| Input | three.pdf · 3 · A4 · Page 1 / Page 2 / Page 3 |
| Output files | 1 |
| Output | three-compressed.pdf |
| PDF pages | 3 |
| File size | 2374 B |
Expected result — Output files: 1.
How it works
- Drop the PDF the form asks for — a scan, a certificate, a filled form.
- Press Compress to 500 KB: settings are tried from gentle to strong until the file fits.
- Download it and check the size shown before you upload.
Frequently asked questions
- Does it always compress as hard as it can?
- No. The gentlest setting is tried first and the result is kept as soon as it is under 500 KB, so a file that only just went over loses very little.
- What if it still does not fit?
- You get the smallest version it could make and its size. Remove pages you do not need, or scan in greyscale at 150–200 dpi, and try again.
- How is the size counted?
- The result stays under 500,000 bytes, so it passes whether the form counts a kilobyte as 1,000 or 1,024 bytes.
- Is my file uploaded?
- No. The PDF is opened, re-encoded and rebuilt in your browser tab, so certificates and ID scans never leave your device.
Made for a specific use
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