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Compress PDF
Make PDFs and photos smaller for email and online application forms – free, no sign-up, and your files never leave your device.
How to compress a PDF
- Keep PDF selected (or tap Photo for JPG/PNG images).
- Tap Choose PDF and pick your file.
- Pick Light to keep text sharp, or Strong for the smallest file.
- Tap Compress PDF, check the new size, then Download.
Questions
Which mode should I use?
Light cleans and repacks the PDF – text stays sharp and selectable, usually 5–20 % smaller. Strong turns each page into an image – often 50–80 % smaller for scanned documents and PDFs with photos, but the text can no longer be selected.
Can I make it under 200 KB for an application form?
For photos, yes: choose Photo and pick 100 KB, 200 KB, 500 KB, 1 MB or your own size. For PDFs, use Strong with "Small file"; the result depends on the number of pages and pictures, so check the size shown before you download.
Is my PDF uploaded?
No. The PDF is compressed inside your browser on your own phone or computer. Nothing is sent to a server.
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PDF Tools use pdf-lib (MIT licence) and PDF.js (Apache 2.0 licence).