Guides
How to Compress a PDF on Android
12 August 2026 · 3 min read
A PDF that's too big to attach or upload from your phone is a specific kind of frustrating, because the obvious fixes (a desktop compression app) assume you're at a desktop.
From your phone, start to finish
- Open Compress PDF in Chrome or your default browser.
- Tap to upload, then choose the PDF from your Downloads, Files app, or wherever it's saved.
- Pick a compression level and tap Compress.
- Download the result directly to your device, ready to attach or share.
Why phone-scanned PDFs are often huge
Camera scanning apps typically save each page as a high-resolution image rather than optimized text-plus-image data, which is why a five-page scanned form can end up several times larger than a five-page digital document. Compression targets exactly that.
Ready to try it yourself?
Compress Your PDFFrequently asked questions
Do I need to install an app to compress a PDF on Android?
No. The browser-based tool works directly in Chrome or any other mobile browser, so there's nothing to install or grant storage permissions to.
Can I compress a PDF I just scanned with my phone's camera scanner?
Yes, and it's actually one of the most common cases that needs it, camera-scanned documents tend to be much larger than the equivalent digital PDF, since each page is essentially a photograph.