Developer Tools

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JSON Formatter

Format, validate and auto-fix JSON. Repairs trailing commas, bad quotes and unquoted keys. Sort keys, minify, upload files and load from URL.

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Regex Tester

Test regex with live highlighting. Match, Substitution and List modes. Capture groups, plain-English explainer, cheat sheet and "Why didn't it match?" hints.

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Base64 Encoder

Encode and decode Base64. Base64URL, no padding, 76-char MIME chunks, per-line encoding, image to data URI, file upload and auto-strip data URI prefixes.

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HEX to RGB Converter

Convert HEX to RGB, RGBA, HSL, HSV, CMYK, OKLCH and CSS instantly. Colour picker, RGB sliders, contrast checker and named colour reference table.

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Unix Timestamp Converter

Convert Unix timestamps to dates and back. Batch mode for multiple timestamps. Auto-detects seconds, ms and microseconds. ISO 8601, RFC 2822, week number, code snippets.

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Colour Palette Generator

Generate colour palettes from a base colour or extract from any image. 7 harmony types, 8 mood themes, 3–8 colours, lock and regenerate, copy CSS vars, download PNG.

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CSS Gradient Generator

Build CSS gradients visually. Linear, radial, conic and repeating types. Per-stop opacity, colour format output, vendor prefixes, CSS selector and 20 categorised presets.

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UUID Generator

Generate UUID v1, v4, v5, v7 and Nil. GUID braces format, bulk download, and a decoder that reads version and timestamp.

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Hash Generator

Generate MD5, SHA-1, SHA-256, SHA-384 and SHA-512 hashes. Bcrypt generator and verifier with adjustable cost rounds.

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SQL Formatter

Format and minify SQL with a token-based parser. Handles subqueries, CASE blocks, 10 dialects, comma position and keyword case.

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JWT Decoder

Decode and inspect JWT tokens. View header, payload, expiry and signature details instantly.

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CSV to JSON Converter

Convert CSV to JSON with four output formats — array, keyed, JSON Lines and array of arrays. Upload files, auto-detect delimiter, parse types, transpose and download.

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URL Encoder / Decoder

URL encode and decode with component or full-URL mode. Space as %20 or +. Encode per line. Built-in URL parser decodes every query parameter.

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Text Diff Checker

Compare two texts with line, word or character-level diff. Side-by-side or inline view. Ignore whitespace and case. Similarity percentage shown.