Guides & how-tos
Clear, practical answers to everyday problems — each one paired with a free tool.
JPG vs PNG vs WebP: Which Image Format Should You Use? A plain-English comparison of JPG, PNG and WebP — file size, quality, transparency and compatibility — with a simple rule for picking the right one every time. How Loan Interest Works: Amortization Explained Why early loan payments are mostly interest, how much a shorter term or extra payment saves, and how to compare loans by total cost — with worked examples. How to Take a Passport Photo at Home with Your Phone Save money and get a better result. How to light, frame and print a passport or visa photo at home that meets official requirements — step by step. How to Reduce Photo Size for Online Forms (Visa, Exam, Jobs) Step-by-step guide to shrinking photos and signatures to 20 KB, 50 KB or 100 KB for visa, exam and job portals — without losing quality or uploading anywhere.