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17 free tools

Developer tools

Less busywork between you and your next commit.

Most tool inputs are processed on your device.
17 of 17 tools

A useful starting point

Developer utilities should save a few careful minutes without becoming a data-exfiltration risk. LittleKit’s formatter, encoder and inspection tools run in the browser and show errors near the operation that needs attention.

Good reasons to use this category

  • Making JSON readable before debugging
  • Converting structured records into a CSV download
  • Inspecting a JWT payload without claiming to verify it
  • Testing a regular expression against sample text

Choosing the right operation

Treat these tools as a local scratchpad. Validate the format before transforming it, keep secrets out of shared screenshots and remember that a decoded token is not an authenticated token. Use the smallest input that reproduces the problem.

Know the boundary

Browser parsing follows the relevant standard, not every vendor extension. Large or pathological inputs can be refused to protect responsiveness. The output is a convenience for development, not a security review of your application.

Read Developer tools documentation