PDF Toolkit is a complete set of PDF tools for your phone: scan documents with the camera, read long books comfortably, then merge, split, compress and protect your files.

What makes it different: your files never leave the device. Every operation runs locally — no server, no upload, no account.

■ PDF READER — BUILT FOR LONG SESSIONS

• Night mode inverts the page so it does not burn your eyes in the dark

• Warmth and dimming sliders, so you can settle on the setting your own eyes find comfortable

• Automatic scrolling at a speed you choose — read without touching the phone

• Screen lock freezes the page so a stray touch cannot move it

• Save the page you are reading as an image

• Jump straight to any page number

• Distraction-free reading, and the screen stays on while you read

■ DOCUMENT SCANNER

• Camera scanning with automatic edge detection

• Perspective correction turns an angled photo into a flat page

• Original, Enhance, Greyscale and Black & White filters

• "Original size" mode when you do not want to adjust corners

• Flash and tap to focus

• Multi-page scanning into a single PDF

■ PDF TOOLS

• Merge several PDFs into one

• Split a PDF and extract the pages you choose

• Rotate and delete pages

• Compress to reduce file size

• Convert images to PDF

• Export PDF pages as JPG or PNG up to 600 DPI

• Protect a PDF with AES encryption

• Remove a password from a file you own

■ WHY THIS APP

• Works with no internet connection at all

• No Google Play services required — runs on devices without them

• Small download

• Full right-to-left interface with Persian (Jalali) dates

• Light and dark themes

• Seven languages: Persian, English, Arabic, Russian, Chinese, Spanish, Armenian