Developer Tools
Regex, JSON, and structured-data utilities for everyday development.
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Regex Tester
Test regular expressions against sample text with live highlights.
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Regex Library
Vetted, ready-to-copy regular expressions for common formats.
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JSON Formatter
Pretty-print, minify, and validate JSON locally in your browser.
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JSON Tree Viewer
Browse JSON as a collapsible tree with search and copy-by-path.
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Regex Replace
Find-and-replace with regex, capture groups, and live preview.
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JSON Diff
Compare two JSON documents with a structural, key-aware diff.
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JSON ↔ YAML
Convert between JSON and YAML in either direction.
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JSON ↔ CSV
Flatten JSON to CSV (or back) with auto-detected columns.
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NDJSON Viewer
Browse newline-delimited JSON as a table; convert to/from JSON arrays.
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Regex Explainer
Break a regular expression down into a readable, indented tree.
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JSON Path
Run JSONPath queries against any JSON value.
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JSON Schema Validator
Validate JSON against a JSON Schema with detailed error paths.