Web Developer Tools
Small chores come up constantly in web work: decoding a timestamp from a log, turning a design's HEX color into RGB, reading the parameters in a long URL or checking what a cron schedule actually means. These tools handle each one in a single step.
The timestamp tools show UTC, local time, ISO 8601 and Unix seconds and milliseconds. The color tools convert between HEX and RGB. The query string tools turn a URL query into JSON and back, and the cron tools describe a five-field schedule in plain English.
Which web tools tool do you need?
- A log or API gives you a number like 1700000000: Timestamp Converter. Convert it to a date, or read the Unix timestamp explainer for seconds versus milliseconds.
- A color code needs a different format: Color Converter. Convert HEX and RGB, or use the dedicated HEX to RGB and RGB to HEX pages.
- A URL has a long list of parameters: Query String Parser. Parse it into JSON, or build a query string from JSON with the generator.
- A schedule must run at the right time: Cron Expression Parser. Read a cron expression in plain English before you deploy it.
All web tools
- Timestamp Converter Convert Unix timestamps to human-readable dates, or date strings to Unix time.
- Unix Timestamp Turn a Unix (epoch) timestamp into UTC, local and ISO time.
- Color Converter Convert colors between HEX and RGB.
- HEX to RGB Convert a HEX color code to RGB.
- RGB to HEX Convert an RGB color to a HEX code.
- Query String Parser Break a URL or query string into key/value pairs.
- Query String Generator Turn a JSON object into a URL query string.
- Cron Expression Generator Type a cron expression, read it in plain English.
- Cron Expression Parser Type a cron expression, read it in plain English.

