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