Merge PDF files on Android
Android has no built-in PDF merger, and most merge apps are ad-supported. This page runs in Chrome on the phone, so the files never leave it.
Drop PDFs to mergeLoading the merger…
Is there a built-in way on Android?
Android itself can’t merge PDFs. Google Drive can scan to PDF and view files, but has no merge command. You can install an app, or use this page in Chrome.
With the browser merger above
- Tap or click the orange panel and choose your PDFs (images work too).
- Drag them into order; type a page range under any file to take only part of it.
- Press Merge. The new PDF saves to your downloads, built on this Android.
Tips for Android
- Tap the orange panel, then the ☰ menu in the picker to switch between Downloads, Drive and other sources.
- Long-press to pick several files in the system picker.
- The merged PDF lands in Downloads; Chrome shows a notification when it is saved.
What carries over
| Situation | What happens here |
|---|---|
| Ordinary PDFs | Pages are copied as-is: text stays selectable, links on the page keep working, images are not re-compressed. |
| Password to open | You type the password; it is used only in this tab. The output can't carry the old encryption, so those pages are re-drawn as images (about 144 dpi) and their text is no longer selectable. |
| Owner password only (no-edit / no-print flags) | Opens without asking, but is handled the same way as above: pages become images. We don't strip protection and hand back an editable copy. |
| Very large jobs | Everything is held in this tab's memory. A laptop copes with a few hundred MB; phones and tablets top out sooner. If a tab crashes, merge in batches and then merge the results. |
| Fillable forms | Field appearance is kept, but fields may stop being fillable in the merged file. Fill and save forms first. |
| Digital signatures | Any change to a signed PDF breaks the signature's validation. Merge copies if you need the signed original intact. |
| Original bookmarks | Not carried over. The merger can add one bookmark per file instead. |
Questions
Do I need an app to merge PDFs on Android?
No. Chrome on Android runs this merger directly. Nothing is installed and the files stay on the phone.
Can I merge PDFs stored in Google Drive?
Yes. Choose Drive in the file picker. Android downloads the file to the phone first, then the merger reads it locally.
Why does merging fail on my phone with big files?
Phones give each browser tab limited memory. Merge in smaller batches, then merge the batch results.