How to convert a PDF on Android

Search “PDF converter” in the Play Store and you’ll find hundreds of apps, most of them ad-heavy wrappers around a server that wants your document. You usually don’t need any of them — Android has capable tools built in, and the rest works in the browser.

Built in: scan with Google Drive

The Drive app has a document scanner that produces a proper PDF with edge detection and perspective correction.

Open Drive, tap +, choose Scan, and photograph each page. Add pages with +, crop and adjust contrast, then save. You get one multi-page PDF, straightened and cleaned up.

Far better than photographing pages and converting them, because it corrects for the angle you’re holding the phone at. Many Samsung and Pixel devices also have a scanner in the camera app.

Built in: print to PDF

Almost any app can produce a PDF through the print system. Open the ⋮ menu → Print, then set the printer to Save as PDF and tap the save icon.

Works from Chrome, Docs, Gmail and most apps that display content. Useful for turning a web page, ticket or receipt into a document.

Built in: OCR through Google Drive

This is the one people miss, and it solves the hardest problem in document conversion.

Upload a scanned PDF to Drive, then long-press it and choose Open with → Google Docs. Drive runs OCR and produces an editable document with the recognised text.

It’s not perfect — complex layouts come out messy — but it’s free OCR built into something you already have. FreeFileTools does not currently include OCR, so scanned PDFs need an OCR-capable tool like this one first.

In the browser

For everything else, the tools here run in Chrome or Firefox on Android with no install:

• PDF to Word for editable text from a text-based PDF
• JPG to PDF to combine photos into one document
• Merge PDF to combine several files
• Split PDF to pull out the pages you need
• Compress PDF when a file won’t attach

Tapping the drop area opens Android’s file picker — choose Downloads, Drive, or your gallery.

Because conversion happens in the browser, your document isn’t uploaded. That’s a meaningful difference from most Play Store converters, which send your file to a server and are vague about what happens next.

What to expect from a phone

Conversion uses your device’s memory:

• Files under about 10 MB are comfortable on most modern phones.
• Long documents at high resolution can be slow, and a low-memory device may reload the tab.
• Keep the screen on and stay on the tab. Backgrounding Chrome can suspend the work.
• Close other tabs before converting something large.

Budget phones with 3–4 GB of RAM will struggle where a laptop wouldn’t. Split the document and convert the pages you need.

Where files land

Downloads go to Downloads in the Files app, reachable through the notification or Chrome’s download list.

Converted files here stay available for 30 minutes, then the browser releases the memory. Download before closing the tab — nothing is stored on a server, so it can’t be recovered afterwards.

Choosing an app, if you need one

If you do want an app — for offline use or heavy editing — the questions worth asking are: does it process files on the device or upload them, what does its privacy policy say about retention, and does it need permissions unrelated to documents? An app that wants contacts access to convert a PDF is telling you what its business model is.