Developer Tools

Free developer tools for everyday coding tasks: format and validate JSON, generate secure passwords and keys, and more. Fast, private and free, with no install.About our developer toolsDevelopers constantly switch between small utility tasks: prettifying an API response, finding the comma that breaks a config file or creating a random secret for a test account. These tools handle those jobs in one click and keep data on your machine, which matters when the data contains tokens or customer information.Each tool uses standard browser APIs such as the native JSON parser and the Web Crypto random number generator, so results are accurate and predictable.Related categoriesText ToolsSEO ToolsWebsite TemplatesFrequently asked questionsIs it safe to paste API responses or secrets here?Our developer tools do not send data over the network. As a general habit, still avoid pasting live production secrets into any website.Can I use these tools offline?Once a page has loaded, the tools keep working even if your connection drops.Will you add more developer tools?Yes. We add tools based on what readers ask for. Use the contact page to suggest one.

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