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Format & convert12 tools

Tools that reshape your data. Reformat or convert between JSON, YAML, TOML, and CSV; inspect with regex; diff two texts; flip identifier-case (camelCase, snake, slug). The bundle you reach for during PR review.

Tools

  1. N°01
    JSON formatterPaste · Format · Validate · Minify
    Indent and validate JSON. Runs in your browser.
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  2. N°02
    Data convertJSON · YAML · TOML · CSV
    Round-trip your config formats. Parse errors point to the exact line and column.
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  3. N°03
    JSON → TSInfer interfaces from samples
    Paste an API response and get a TypeScript interface back, ready to drop in.
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  4. N°04
    Regex testerPatterns · options · live match preview
    Check a pattern live and load common ones with a single click.
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  5. N°05
    DiffCompare two texts · line and word level
    Paste two versions and see exactly where they differ, side by side.
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  6. N°06
    Text casecamel · snake · kebab · Pascal
    Convert identifier names between every common style.
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  7. N°07
    SlugifyTitle → URL-safe string
    Trim spaces, accents, and punctuation into a clean slug for a URL.
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  8. N°08
    Xlsx convertxlsx · csv · json both directions
    Turn an Excel sheet into JSON or CSV — or back. Everything stays in the browser.
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  9. N°09
    cURL convertcURL one-liner to code
    Take a cURL one-liner from a backend log and rewrite it as fetch, axios, or HTTPie.
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  10. N°10
    Romanize koMCT 2000 + passport convention
    Names, places, brand names — one per line. See both romanizations side by side.
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  11. N°11
    JSON schemaajv validation · JSONPath query
    Validate an API response against a schema, or pull a slice out of a large JSON.
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  12. N°12
    Regex visualizerRegex → tree + per-node description
    Unfold a complex regex into a tree, with each piece explained.
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