📚 The Blog
Guides, tips and how-tos for getting the most out of free online tools.
Number the pages of any PDF in seconds, right in your browser — no software, no signup, and your file never leaves your device.
Stamp DRAFT, CONFIDENTIAL or your name across every page of a PDF for free — privately, without uploading your document anywhere.
Remove unwanted pages from any PDF for free — blank scans, cover sheets, extra copies — privately in your browser.
Build a professional color palette from one color using complementary, analogous and triadic harmony — with free palette, shades and contrast tools.
Halve your printing with a 2-in-1 (N-up) PDF layout — fit two pages on one sheet, free and in your browser.
How linear-gradient() works, every direction keyword, and ready-to-use gradient code — plus a free live CSS gradient generator.
Most free PDF tools upload your file to their servers. Here's how to merge, split, number and watermark PDFs entirely in your browser.
BMR, TDEE and the calorie target for losing or gaining weight — explained simply, with a free calculator.
What contrast ratio means, the AA and AAA thresholds, and how to fix unreadable text — with a free WCAG contrast checker.
Turn a calorie target into grams of protein, carbs and fat for your goal — the simple method, common splits, and a free calculator.
The number of business days in 2026, why it changes, and how to count working days between any two dates — with a free business days calculator.
Estimate body fat with just a tape measure using the US Navy formula — how to measure correctly and what the numbers mean.