Code Tools

Code Tools

Format, validate, encode and inspect common code formats. Browse 12 currently published tools.

Code utilities

Browse all 12 published code tools.

JJSON Formatter & ValidatorFormat, validate, minify, sort and inspect JSON in your browser.Open tool

UUUID GeneratorGenerate UUID values for local testing and sample data.Open tool

JJWT DecoderInspect JWT payloads while debugging auth flows.Open tool

RRegex TesterCheck regular expressions against sample text.Open beta tool

BBase64 Encoder / DecoderEncode and decode Base64 strings for API and data work.Open tool

JJSON Diff CheckerCompare two JSON snippets and list changed keys.Open beta tool

UURL Encoder / DecoderEncode and decode URL text, components and query strings.Open tool

HHash GeneratorGenerate SHA hashes for text and local files in your browser.Open tool

XXML Formatter & ValidatorFormat, minify and validate XML markup in your browser.Open beta tool

MMarkdown PreviewerPreview basic Markdown as generated HTML.Open beta tool

TTimestamp ConverterConvert Unix timestamps into readable date notes.Open tool

JJSON ViewerPreview JSON in a readable starter viewer format.Open beta tool

What this page offers

Use code tools to inspect common development formats, create sample identifiers and debug API or authentication data quickly.

Start here

JSON Formatter & Validator JWT Decoder Regex Tester

Continue a workflow

JSON Viewer — Inspect nested JSON in a focused tree view.JSON Diff Checker — Compare two JSON documents and find structural differences.JSON to YAML — Convert validated JSON into readable YAML.

Related categories

CSS Tools Files Tools SVG Tools

FAQ

Are code snippets uploaded?

Code tools are designed to run in your browser where possible, so common formatting and decoding tasks happen locally.

Can I use these tools while debugging APIs?

Yes. Tools like JSON Formatter & Validator, JWT Decoder and Base64 Encoder Decoder are useful for API inspection and debugging.

Are generated UUIDs suitable for tests?

Yes. The UUID Generator is handy for test data, fixtures and local development identifiers.