Guides
Choose the right operation before pressing the button.
These guides explain decisions that span several tools: which image lever to change, what local processing protects, and how to make QR codes reliable in real use. They also explain text cleanup, encoding choices, and the difference between calendar dates and clock times.
Clean a list, then compare versions
Choose what counts as the same line, preserve the version you need, and use a diff only when you want to see what changed.
Base64 or URL encoding?
Both transformations are reversible, but they solve different transport problems. A space, a percent sign, and Unicode text make the distinction clear.
Date difference or time duration?
A span between two dates is not the same question as minutes between two clock times. Pick the calculation that matches your input and boundary.
Image size, format, and quality
Separate pixel dimensions, file format, and encoder quality so you know whether to resize, convert, compress, or combine those steps.
What browser-local file processing means
Understand the difference between keeping a selected file out of a processing server and the ordinary network data involved in loading any website.
QR code printing and testing checklist
Prepare a QR code for posters, cards, labels, and screens with practical checks for contrast, quiet zones, destination accuracy, and real-device scanning.