PDF guides for iPhone and Android

Combine PDF files into one on iPhone, iPad or Android. ProperPDF merges them on your phone, offline, with no account. Free to use.

Extract pages from a PDF on iPhone, iPad or Android. Split by page range or every few pages, offline, with no account. Free to use.

Combine PDF files on Android without uploading them. ProperPDF merges scans, receipts, forms and reports on the phone. Free to use.

Combine PDFs on iPhone with Apple's built-in Preview app (iOS 26 and later), step by step, and what to use on older iOS versions.

Reduce PDF file size on iPhone, iPad or Android. ProperPDF compresses on the device, offline, so the document is never uploaded.

Shrink a PDF privately on iPhone, iPad or Android. ProperPDF compresses on the device instead of sending the file to an online compressor.

Draw your signature and place it on a PDF on iPhone, iPad or Android. ProperPDF signs documents offline, with no account.

Fill PDF forms on iPhone, iPad or Android with ProperPDF, offline: type into form fields, or add text to a scanned or flat form, and save a copy.

Add a password to a PDF on iPhone, iPad or Android with ProperPDF, offline. Also restrict printing and editing, or remove a password you know.

Scan paper documents into PDFs with your phone camera on iPhone, iPad or Android. ProperPDF finds the page edges and saves offline.

Combine photos, screenshots and scans into one PDF on iPhone, iPad or Android with ProperPDF, offline. Free to use.

Export PDF pages as PNG or JPEG images on iPhone, iPad or Android, offline and without uploading the document.

Six PDF apps compared for working offline, without uploads: ProperPDF, PDFgear, Apple Preview, Files by Google, Foxit and Xodo. Prices and limits included.

Alternatives to Adobe Acrobat Reader on mobile for merging, compressing and signing PDFs: ProperPDF, PDFgear, PDF Expert, Apple Preview, Foxit and Xodo.

iLovePDF and Smallpdf process PDFs on their servers. These alternatives merge, compress and sign PDFs on your phone instead, offline.

ProperPDF vs Adobe Acrobat Reader for iPhone and Android: which tools are free, offline use, accounts, ads and what each one can't do.

ProperPDF vs PDF Expert by Readdle: free tools, Premium prices, offline use, Android support and what each app can't do.

What runs on your phone, what uses the internet, and how to check it yourself.

What happens to a PDF when you upload it to an online converter, and how to merge, compress and sign documents on your phone instead.

ProperPDF scans, merges, splits, compresses, signs, fills and locks PDFs offline on iPhone and iPad, with no uploads and no account.

ProperPDF scans, merges, splits, compresses, signs, fills and locks PDFs offline on Android 8.0 and later, with no uploads and no account.