Guides & tips
Short, practical guides to get more out of every tool: what each one does, how to use it step by step, and the tricks that save time.
- QR Code Generator
How to Make a QR Code That Works (Free, No Expiry, No Sign-Up)
A QR code takes a minute to make, but a badly made one fails on the poster you just printed. Here’s how to make one that scans every time, and never stops working.
- XML Toolkit
How to Format and Validate XML: Well-Formed vs Valid Explained
XML is unforgiving: one unclosed tag or stray ampersand and nothing can read it. Here’s how to make XML readable, check it properly, and fix the errors that come up again and again.
- JSON Toolkit
How to Format and Validate JSON (and Fix the Most Common Errors)
A single missing comma can break a whole app. Here’s how to make JSON readable, check that it’s valid, and fix the errors that trip up almost everyone.
- Image Compressor
How to Compress Images Without Losing Quality
Big images slow down websites and bounce off email limits. Here’s how to make them much smaller while they still look the same, with the right settings for every format.
- Image Converter
How to Convert HEIC to JPG on Any Device, for Free
iPhone photos often arrive as .heic files that Windows, older Android phones and many websites can’t open. Here’s how to turn them into JPGs in a few clicks, without uploading them anywhere.
- File Comparison
How to Compare Two Files Online and See Every Change
Two versions of a file and no idea what changed? Here’s how to find every difference in seconds, read the result, and move changes from one version to the other.