Free Tools

A Developer Toolbox in One Page: JSON, Regex, JWT, Unix Timestamp and CSV

Debugging often means hopping between several small tools. This page gathers the ones used most, and what you paste is not uploaded.

The tabs

  • JSON: format, validate and repair.
  • Regex: test with an explanation.
  • JWT: read a token and verify its signature.
  • Unix timestamp: convert time and zones.
  • CSV and JSON: convert in both directions.

Why privacy matters here

Data developers paste, such as tokens or customer records, should not end up on someone else server. These tools run in your browser, so nothing is sent out.

Direct links

Each tool also has its own page if you want to share a link with a teammate.

Open the tool: Online Developer Tools: JSON, Regex, JWT, Unix Timestamp and CSV