JSON Formatter and Validator
Format, minify, and validate JSON payloads, config files, logs, and API responses in your browser.
Developer Tools Help Hub
This hub groups the browser-based utilities that developers revisit repeatedly for formatting, decoding, generation, and quick inspection tasks. It gives search engines and users one stable page that ties together the smaller utilities in the registry.
JSON Diff
Compare two JSON documents and find added, removed, or changed paths for API payloads, configs, and test fixtures.
JSON Merge
Merge multiple JSON objects or arrays into one formatted result for configs, examples, and API mock data.
JSON Sort
Sort JSON object keys recursively for stable snapshots, cleaner diffs, documentation, and repeatable test output.
JSON Minify
Remove whitespace from valid JSON for compact payloads, embedded examples, configs, and copy-ready snippets.
JSON Beautify
Pretty-print compact JSON with readable indentation for debugging, documentation, review, and API troubleshooting.
JSON Schema Generator
Infer JSON Schema structure from a sample JSON payload for validation and API documentation.
Curl to Fetch
Convert curl commands into JavaScript Fetch API snippets with headers, auth, cookies, query strings, and request bodies.
Curl to Axios
Convert curl commands into Axios request code for frontend apps, Node scripts, API debugging, and docs.
Curl to Python Requests
Convert curl commands into Python requests snippets with headers, data payloads, cookies, auth, and multipart fields.
Curl to Go
Convert curl commands into Go net/http starter code for API clients, backend jobs, integration tests, and examples.
Curl to Java
Convert curl commands into Java HttpClient code for API integrations, documentation examples, and backend prototypes.
Markdown Formatter
Format Markdown spacing, headings, lists, and code blocks for cleaner README files, docs, and release notes.
Markdown Lint
Check Markdown for common writing and structure issues such as duplicate headings, spacing, and unclosed code fences.
Markdown TOC Generator
Generate a Markdown table of contents from headings for README files, documentation pages, and long notes.
Markdown Diff
Compare two Markdown documents line by line for docs reviews, release notes, README edits, and content changes.
Markdown Merge
Merge multiple Markdown sections into one clean document for docs drafts, changelogs, and content handoff.
Markdown Preview
Preview Markdown as rendered HTML with headings, lists, links, inline code, and fenced code blocks.
Regex Generator
Generate common regex patterns for email, URL, phone, slug, UUID, number, and text matching.
JWT Decoder
Decode JWT header and payload JSON locally, inspect claims, and verify HMAC signatures in your browser.
JWT Encoder
Encode and sign JSON Web Tokens from custom header and payload JSON using browser-only HMAC signing.
UUID Generator
Generate UUID v4 identifiers in bulk with TXT, JSON, and CSV export for tests, fixtures, and databases.
Base64 Encode
Encode text, snippets, and small payloads into Base64 for testing, headers, configs, and developer workflows.
Base64 Decode
Decode Base64 strings back into readable text for debugging payloads, configs, and encoded values.
URL Encode
Percent-encode URLs, query strings, and text values for browser-safe links and API requests.
URL Decode
Decode percent-encoded URLs and query string values for debugging links, redirects, and request parameters.
HTML to Markdown
Convert HTML snippets into clean Markdown for docs, README files, CMS migrations, and blog editing.
Markdown to HTML
Convert Markdown headings, paragraphs, lists, links, and code blocks into HTML output.
HTML to JSX
Convert HTML attributes and inline markup into JSX-friendly syntax for React components.
SVG to React Component
Wrap inline SVG markup as a reusable React component for icons, illustrations, and frontend assets.
Timestamp Converter
Convert Unix timestamps, milliseconds, ISO dates, UTC, and local time for logs and debugging.
Cron Expression Generator
Generate cron expressions for common hourly, daily, weekly, monthly, and custom schedule patterns.