• New tool: Added beautifier/minifier for HTML, CSS, JS, and XML.
  • New search box: The tool list is getting longer, you can now search through all of them.
  • Unix Time Converter now supports basic math operators (+ - * /).
  • HTML Preview now disables all outgoing requests by default.
  • You can now enable/disable line wrap for most of the text views by Right Click and select "Toggle line wrap".
  • JSON Formatter Tool now reports and highlights syntax errors.
  • Text Diff Checker now allows you to swap inputs.
  • Fixed an issue with JSON Formatter Tool and smart quotes that mistakenly report the input to be invalid.
Download 1.4.0


  • Text Diff Checker is added. You can now compare two strings and see the diff visually. You can also generate the diff as text format.
  • HTML Previewer is added. You can now preview your raw HTML strings using the default WebView provided by macOS. JavaScript and link navigation are disabled by default, but you can enable them if you want to.
  • JSON Formatter/Validator improvements: the output will highlight your syntax error and partially format your JSON when possible.
  • Follow DevUtils on Twitter to see some nice GIFs! @devutils_app
Download 1.3.0


  • JSON tool now automatically replaces smart quotes with dump quotes. You can disable this using the gear icon in the tool.
  • Disabled automatic smart quotes substitution in all text inputs.
  • Fix an issue during the app start that may cause a crash.
Download 1.2.1


  • New tool: UUID Generator/Decoder helps you to decode UUIDs and (batch) generate v1/v3/v4/v5 UUIDs.
  • You can now sort the tool list alphabetically using menu Tools ► Sort Order
Download 1.2.0


  • Added a new option to disable debug log in Preferences panel (disabled by default).
  • Added a Copy button in the input text when no tools are detected.
Download 1.1.1


  • New feature: You can now click the "Clear" button to clear the input in every tool.
  • Added "Send Feedback" button.
  • Fixed app crash when activated with some specific inputs.
Download 1.1.0


  • New tool: Backslash Escape/Unescape is added so you can quickly turn strings with escaped characters like \n, \t... to its raw form.
  • Unix Time Converter tool is now automatically detect milliseconds, seconds and ISO 8601 format.
  • Query String Parser tool is now only parse the query string part of the input and ignore the rest of the URL.
Download 1.0.0