How to Merge PDF Files on Android

The fastest way to merge PDFs on Android is to use a browser-based merger like the one on this site. Open Chrome, navigate to the Merge PDF tool, and tap the upload area.

Select multiple PDF files from your Downloads folder, Google Drive, or any other location. Android's file picker lets you select multiple files by long-pressing the first file, then tapping additional files.

Reorder the files by dragging them in the upload list. The order you see is the order they'll be merged in — the top file becomes the first pages of the output PDF.

Tap Merge PDFs. The merging runs entirely on your Android phone — no upload, no waiting on a slow connection. When it's done, tap Download to save the merged PDF.

The whole process takes 10-30 seconds depending on the number and size of files. Because everything happens on-device, it works even on slow connections.

Adobe Acrobat Mobile is a free app from the Play Store that includes PDF merging. Open the app, sign in (or skip), tap the + button, choose 'Combine Files', and select your PDFs.

Acrobat Mobile lets you reorder files before merging and offers additional features like organizing pages and adding bookmarks. The merge feature is included in the free version.

Note that Adobe Acrobat Mobile uploads your PDFs to Adobe's servers for merging. If privacy is a concern, use the browser-based tool on this site instead, which processes everything on your Android phone.

Name your files with numeric prefixes (01-contract.pdf, 02-exhibits.pdf, 03-signatures.pdf) before uploading. This makes it easier to get the merge order right.

Use Wi-Fi when merging many files. While the browser-based tool processes locally, downloading the final merged PDF over a slow cellular connection can take time if the file is large.

If you merge PDFs frequently, add the tool to your home screen. Open Chrome, navigate to the Merge PDF page, tap the three-dot menu, and choose 'Add to Home screen'.

For scanned documents, use the Google Drive app's scanner to create individual PDFs, then merge them using the browser tool. This is a great workflow for multi-page contracts or receipts.