Developer tools for quick code and data checks
Format JSON, test regex, decode JWTs, convert Base64, clean HTML, and handle common data tasks directly in your browser. These tools are built for quick developer workflows where local processing and simple output matter.
Popular developer tools
These direct links cover the tools developers usually need first. Keep the automatic Thrive library below this section so new tools still appear on the page.
JSON Formatter & Validator
Format, validate, and clean up JSON data before pasting it into code, configs, APIs, or docs.
Open tool →Regex Tester
Test regular expressions against sample text and check matches before using them in your project.
Open tool →JWT Decoder and Encoder
Decode token headers and payloads locally. Useful for debugging auth flows and API requests.
Open tool →Base64 Encoder/Decoder
Encode or decode Base64 strings without sending the input to an external service.
Open tool →YAML to XML Converter
Convert structured YAML into XML for config migration, data cleanup, and integration work.
Open tool →Rich Text to HTML
Convert copied rich text into clean HTML for posts, emails, docs, and lightweight page blocks.
Open tool →Find a developer tool by task
Use these grouped links for common coding, formatting, encoding, and markup workflows.
Data and config
Encoding and debugging
HTML, CSS, and color
Our Full Developer Tool Library