Smartphones handle most PDF tasks that used to require a computer. Here's your complete guide to working with PDFs on mobile.
Opening PDFs
iPhone: PDFs open natively in Safari, Files app, and most email apps. No additional app needed.
Android: Chrome, Google Drive, and most file managers open PDFs. Google PDF Viewer handles basic viewing if needed.
Merging on Mobile
Open FreePDFNest Merge PDF in your mobile browser. Tap "Choose PDF Files," select your documents from Files/Google Drive, and merge. The experience is identical to desktop.
Compressing on Mobile
Large PDFs eat up mobile storage and are slow to email. Use Compress PDF from your phone browser to reduce file sizes by up to 90%.
Signing on Mobile
Sign PDF works beautifully on phones — use your finger to draw a signature on the touchscreen. It's actually easier than using a mouse on desktop.
Converting on Mobile
Need a PDF page as a photo for WhatsApp? Use PDF to Image to convert specific pages to JPG. Need to turn photos into a PDF? Use Image to PDF.
Where Are Downloaded Files?
iPhone: Files app → Downloads folder (or the location you chose when saving).
Android: Downloads folder, accessible via your file manager or notification panel.
Ready to try it?
Use our free All Tools tool — no signup required.