Developer
Format JSON, HTML, CSS, JavaScript and SQL, compare structures, apply JSON patches and validate NDJSON. Inspect code and data without executing your source.
Explore tools
JSON formatting workspace
Format or minify strict JSON, sort object keys, and encode or decode strings while preserving raw number tokens.
Regex tester
Try a pattern and see what it matches in your text.
Compare text
See what changed, side by side.
HTML formatter
Format HTML indentation so its structure is easier to read.
CSS formatter
Tidy the indentation and line breaks in your CSS.
JavaScript formatter
Format JavaScript without running it.
SQL formatter
Format PostgreSQL-style SQL indentation and keywords.
UUID generator
Generate UUIDs to copy or save.
JSON to TypeScript
Turn an API response into nested types with arrays, unions and null values.
JSON to typed XML
Convert JSON to XML with type attributes for objects, arrays and scalar values.
XML to JSON tree
Convert XML with mixed text and elements to an order-preserving JSON tree.
XML formatter
Indent XML structure while keeping mixed text, CDATA and comments intact.
SQL IN list
Turn a pasted spreadsheet column or one-value-per-line TXT file into a quoted SQL IN fragment.
CSV to SQL INSERT
Generate reviewable PostgreSQL or MySQL INSERT scripts from CSV for an existing table.
cURL to fetch
Convert a copied cURL API request into browser fetch code.
HTTP headers parser
Inspect a copied HTTP header block and preserve repeated fields in JSON.
ENV and JSON converter
Convert .env assignments to a string-valued JSON object or environment list, with exact value checks.
Cron expression checker
Check a five-field Unix cron schedule and preview its next matching minutes in a chosen time zone.
chmod calculator
Translate octal permissions including setuid, setgid and sticky bits.
JSON structural comparison
Compare JSON values structurally and locate changes with JSON Pointer paths, without losing large integer precision.
JSON Merge Patch
Apply an RFC 7396 merge patch locally: update object fields, delete fields with null and replace arrays as whole values.
JSON Patch workspace
Apply RFC 6902 JSON Patch operations in order, review array index shifts and download the complete result.
INI and JSON converter
Move single-line INI configuration to a structured JSON document, or rebuild INI from string values.
Java Properties and JSON converter
Decode Java .properties escapes and continuations, or export a string-valued JSON map as an ASCII properties file.
Choose the right tool
Use formatters to read syntax, comparisons to locate changes and parsers to inspect supported structures. Generated SQL and fetch code are drafts to review in your development workflow. Formatting, decoding and type inference do not establish runtime trust.