All tools

Four tools covering the path from a single colour to a shippable palette: convert it, expand it into a scale, blend it into a gradient, and prove the result is legible.

Time is the subject that produces the most confidently wrong code. An offset stored where a timezone belonged, milliseconds read as seconds, a scheduled job that skips a day twice a year.

This group covers the transformations that let arbitrary data survive a channel that was not designed to carry it, and the ones that prove data has not been altered on the way. They are frequently confused with each other, and the confusion is where the security bugs come from.

Formatters take structured text that is technically correct but unreadable, and make it legible again. Minified JSON from an API, a config file after a hand edit, a payload copied out of a log line with the escaping still attached.

Generators produce something that did not exist before: an identifier, a secret, a schedule, an image. What separates a good one from a dangerous one is where the randomness comes from and whether the output ever leaves your machine.

These tools answer questions about text that you cannot answer by reading it. What exactly changed between two versions. Whether a pattern matches what you think it matches. Why two strings that look identical are not.