PaperKnife

PaperKnife is a file management tool for Android devices. This application offers powerful features, allowing users to edit, convert, protect, and manage PDF files while ensuring complete control over their documents. With PaperKnife, users can edit PDF files directly on their mobile devices, eliminating the need for a bulky desktop computer. It also protects your privacy, eliminating concerns about data breaches due to cyberattacks. Furthermore, its lightweight design ensures smooth operation on most devices without consuming excessive system resources.

Highlights:

Merge PDF: Combine multiple documents into one.

Split PDF: Visually extract specific pages or ranges.

Compress PDF: Reduce file size without sacrificing quality.

Protect & Unlock: Add or remove passwords with strong encryption.

Convert: Images to PDF and PDF to high-quality images.

Edit: Rotate, rearrange, and add page numbers or watermarks.

Secure: Edit metadata and sign documents electronically.

Features:

Merge & Split PDFs

Combine multiple files into one comprehensive document or split a large file to extract only the pages you need. Perfect for organizing reports, assignments, or invoices.

Image to PDF & PDF to JPG Converter

Quickly scan or convert photos (JPG, PNG) into a high-quality PDF document. Need an image from a document? Easily extract pages and convert them back into high-resolution images.

Compress PDF Files

Running out of storage? Shrink large file sizes significantly without sacrificing text or image quality. Compressed files are easier to email and share online.

Lock & Unlock Documents

Keep your private files strictly confidential. Add strong password encryption to protect sensitive data, or easily remove passwords from unlocked files for quick access.

Add Watermarks & Digital Signatures

Personalize and protect your intellectual property. Apply custom text watermarks or securely sign your electronic documents on the go.

Organize & Rotate Pages

Take full control of your document layout. Rearrange page order, delete unnecessary pages, or fix upside-down scans by rotating pages instantly.

PDF to Text (OCR Extraction)

Instantly extract readable, editable text from your files. Copy, share, or edit the content without having to retype everything manually.

Repair Corrupted PDFs

Don't lose your important data! Use our advanced recovery tool to effortlessly fix damaged or corrupted files and restore your access.

Pagination & Bookmarks

Navigating long documents is a breeze. Add custom page numbers and set bookmarks so you never lose your place in a book, manual, or legal document.

100% Offline & Secure

Your data never leaves your device. Enjoy peace of mind knowing that your personal and professional documents are completely safe from online threats.

FAQs:

What is PaperKnife used for?

PaperKnife is a mobile PDF utility app used to merge, split, compress, convert, sign, encrypt, and clean metadata from PDF files directly on your device without uploading them online.

Is PaperKnife APK safe to install?

It can be safe if downloaded from a trusted source. Since it is an APK file, users should verify the source and scan the file before installing.

Can PaperKnife remove passwords from PDFs?

Yes. The app includes tools to add or remove PDF passwords locally, as long as you have proper access to the file.

Who should use PaperKnife?

It’s suitable for students, office workers, freelancers, and anyone who frequently handles sensitive PDF documents and prefers offline privacy-focused tools.

Changelog:

Fixed typo in Unlock tool description

Fixed history showing original file name instead of output file name

Fixed merge tool rejecting same file added multiple times

Fixed watermark transparency not applied to output PDF

Added export saved signature as PNG

Conclusion:

PaperKnife is ideal for students, freelancers, remote workers, and anyone who regularly deals with PDFs. It’s particularly helpful for people who value privacy and want document control without relying on cloud-based services. If you often edit contracts, submit forms, or organize digital paperwork, this app fits naturally into that workflow.