From Washed-Out to Wow: The Pro's Guide for Perfect PDF Contrast
We show you how to sharpen text and graphics for perfect readability every time.
By Emma Thompson • February 4, 2026
Read article Category: Visual Enhancement
Polish your document’s appearance - Add graphics, insert watermarks and more.
Flip the Switch: The Complete Playbook for Inverting PDF Colors
Turn any bright document into a comfortable, eye-friendly dark mode experience.
By Emma Thompson • January 28, 2026
Read article 
The Readability Fix: A Master Guide to Darkening Any PDF
Our guide to fixing low-contrast scans and making any document perfectly readable.
By Emma Thompson • January 16, 2026
Read article 
Skewed Scans Be Gone! The Complete Playbook for Straightening PDFs
From tilted scans to perfect pages, here's how to master document alignment.
By Emma Thompson • December 24, 2025
Read article 
From Crooked to Perfect: The Best Guide to Deskewing PDFs
We show you how to straighten any scanned document for a flawless, professional look.
By Emma Thompson • December 19, 2025
Read article TOOLS
Convert To PDF
Convert From PDF
Loved PDF-File.com? Spread the word!
Help us keep these tools free: Share with your friends!