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Short guides that show you how to get everyday tasks done, with free tools to do them.
How to calculate percentage increase and decrease
Learn the percentage change formula with clear examples: rent, salary, prices and discounts. Includes the common mistakes to avoid.
Read guide →How to compress an image to under 100 KB
Step-by-step: shrink a photo below 100 KB for forms, email and websites while keeping it sharp. Works on phone and computer, no upload.
Read guide →How to convert JPG to PDF for free on a phone or computer
Turn one photo or many into a single PDF in under a minute. Steps for iPhone, Android, Windows and Mac, plus tips for clear document scans.
Read guide →How to make a QR code for a link, Wi-Fi or menu
Create a free QR code that never expires. Steps for website links, Wi-Fi passwords and restaurant menus, plus printing sizes that scan reliably.
Read guide →How to calculate a monthly loan payment
See how a loan payment is worked out, with a $20,000 example, the formula, and how the term and rate change the total interest you pay.
Read guide →How to create a strong password and remember it
What makes a password strong: length, randomness and never reusing it. Plus how to manage dozens of passwords without memorizing them.
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