ZenPDF: PDF Tools & Scanner

Every PDF tool in one fast, offline app. Merge, compress, split, watermark, edit metadata, scan, and convert images to PDF — no account, no cloud, files stay private.

ZenPDF is the all-in-one PDF toolkit that works completely offline. No account, no sign-up, no cloud uploads -- your files never leave your iPhone.

Whether you're a student organizing notes, a professional handling contracts, or just trying to secure a document with a watermark, ZenPDF gives you every essential PDF tool in one clean, fast app.

EVERY TOOL YOU NEED

• Merge PDF -- Combine multiple PDFs into a single document. Reorder them exactly how you want before merging. Your original text and quality are preserved.
• Compress PDF -- Shrink large PDFs to share them easily. Smart compression optimizes embedded images while keeping your text crisp and selectable. Pick the level that fits.
• Edit Metadata -- View and update PDF document properties like Title, Author, Subject, and Keywords in a clean form.
• Add Watermark -- Secure your documents with professional text watermarks on all pages.
• Image to PDF -- Turn photos, screenshots, and pictures into a polished PDF in seconds.
• Scan to PDF -- Use your camera to capture physical documents and save them straight to PDF.
• Split PDF -- Pull out single pages or page ranges from any document.
• Rotate Pages -- Fix sideways or upside-down pages, all at once or one at a time.
• Built-in PDF Viewer -- Open and review your results without leaving the app.

WHY ZENPDF

• 100% offline -- everything is processed right on your device
• No account, no login, no cloud
• Text stays text -- we never flatten your PDF into a blurry image
• Fast -- heavy work runs in the background so the app never freezes
• Unlimited use -- no caps on how many files you merge, scan, or convert
• Clean, modern interface with light and dark mode

Your documents are yours. ZenPDF processes files locally and never sends their contents anywhere.

Download ZenPDF and take control of your PDFs today.