How to compress PDF to 1MB
- 1Choose or drop your PDF into the box above.
- 2Leave the target at 1MB, or adjust it if your form has a different limit.
- 3Turn on Black & white for scanned documents — it saves a lot of space.
- 4Press Compress, check the result size, and download.
Compress PDF to 1MB: key facts
- Price
- Free — no sign-up, no watermark
- Privacy
- Runs in your browser; files are never uploaded
- Output
- PDF under 1MB, same page count
- What fits in 1MB
- A long scanned document — often ten pages or more
- Method
- Pages re-rendered as JPEG; DPI and quality tuned to hit the limit
- Works on
- Any modern browser — Android, iPhone, Windows, Mac
- Offline option
- FramePDF Android app (free)
Who asks for PDFs under 1MB?
A 1MB ceiling is common on passport and visa applications (Indian missions cap the total uploaded documents at about 1MB), insurance claims, and email-friendly sharing. These limits exist because the portals were built to handle thousands of uploads at once, not because your document needs to be that small.
In practice, 1MB comfortably fits a long scanned document — often ten pages or more.
How this tool hits the exact size
Instead of guessing a "low / medium / high" setting, the tool searches for the best combination of resolution and image quality that lands just under 1MB. It starts at 150 DPI and steps down only as far as it has to — never below the point where text becomes unreadable.
Pages are re-saved as images, which is what most portals expect from a scanned certificate. If you need selectable text, keep your original as well.
Tip
If the portal caps the total of all uploads at 1MB, split that budget between files before you start: for example 400KB + 300KB + 300KB.