Best Free PDF Editor Apps for Android in 2026

Editing a PDF on Android splits into two very different jobs, and most frustration comes from using a tool built for one to do the other. Annotating — highlighting, commenting, signing, filling a form — is well served by several free apps. Changing the text that is already on the page is not: almost no mobile app does true in-place text editing, which is why people who need it end up on a desktop or in a browser.

This guide covers what each option actually does, so you can pick by the job rather than by the star rating.

Xodo

The most capable free all-rounder on Android. Annotation, highlighting, form filling, signing, page reorder, merge and split, all without a subscription and without watermarking the export. It reads and writes standard PDF annotations, so marks made here survive when the file is opened on a desktop. It does not edit existing body text.

Adobe Acrobat Reader

The safest choice for anything involving forms or digital signatures, because it is the reference implementation — if a form was built with Adobe's tooling, Reader is the app most likely to handle it correctly, including XFA forms that other apps refuse outright. Free tier covers viewing, annotation, form filling and signing. Text editing and page manipulation sit behind a subscription.

Foxit PDF Editor

Closer to a desktop editor than most mobile apps, with a free tier covering annotation and basic organisation. Its strength is handling large documents without stalling, which matters if you work with scanned reports on a phone.

WPS Office

Worth knowing about because it bundles PDF handling with a document suite, so it is often already installed. Adequate for viewing, annotation and conversion. Be deliberate about its account prompts and cloud sync if the document is confidential.

Google Drive's built-in viewer

Already on the device and fine for reading and light annotation. It is a viewer, not an editor — the most common "why can't I edit this PDF" question on Android traces back to expecting more from it than it offers.

What none of these do well

Changing existing text. Mobile screens and touch targets make in-place text editing awkward, and most Android apps simply do not implement it. If you need to fix a typo in a contract, correct a price on an invoice, or swap a logo, the realistic options are a desktop editor or a browser-based one. Online PDF Edits works in a mobile browser and edits the text objects in the original file, so the layout around your change stays put — but for pure annotation on the go, a native app will feel better than any browser.

How this list was put together

These are capability comparisons drawn from each tool's own documentation and generally available behaviour, not a hands-on benchmark. Prices and version numbers are deliberately left out: they change often enough that a stale figure here would be worse than none. Check the vendor's page for current pricing before committing to anything paid.

Frequently asked questions

Which of these is best for signing a PDF on Android? Adobe Acrobat Reader if the document has a real signature field, Xodo if you just need to place a drawn or typed signature on the page. Both are free for that.

Can any of them edit the text already in a PDF? Not meaningfully. Foxit and Acrobat offer it behind a subscription with significant limits on mobile. For a genuine text edit, use a desktop or browser editor.

Will annotations made on Android show up on a computer? Yes, provided the app writes standard PDF annotations — Xodo, Acrobat Reader and Foxit all do. Apps that store marks in their own layer are the ones whose highlights "disappear" for the recipient.

Are free Android PDF apps safe for confidential documents? Check where the file goes. Apps that process on-device are the safer default; anything syncing to a cloud account is worth reading the policy on first.