Coding Tools

Choose the right coding tools for your task

Choose a developer tool by the input you have and the output you need. Formatting, validation and encoding are separate operations.

Keep the original input and inspect the output. Remove passwords, tokens and personal data from examples before sharing them.

Practical guides

• How to Format and Validate JSON

  Format JSON for reading, fix common syntax errors and understand what validation can check. Includes a valid example and cautions about numeric precision.

• How to Use JSON Formatter & Validator

  Format and validate JSON online with 2-space, 4-space or tab indentation. Sort object keys, minify JSON and copy the result for free.

• How to Use UUID Generator

  Generate random UUID v4 identifiers in your browser. Create up to 1,000 IDs, choose uppercase, hyphens or braces, and copy the full list.

• How to Use JWT Decoder

  Decode JSON Web Tokens online. Inspect the JWT header, payload and claims, in a readable format. Free JWT decoder that runs locally in your browser.

• How to Use Serialize & Unserialize

  Unserialize PHP data into print_r, var_dump, var_export, JSON or tree views, turn JSON into PHP serialize format, and repair broken string lengths.

• How to Use Regex Tester

  Test JavaScript regular expressions online with live match highlighting and flags. See every match in your sample text. Free regex tester for developers.