complete catalogue

Developer Utility Tools

Browse our directory of 18 offline-ready developer utilities. All tasks run locally in your browser.

Data Format Converters

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JSON Formatter & Validator →

Beautify, inspect, and validate JSON structures.

JSON to CSV Converter →

Convert structured JSON lists into CSV tables.

CSV to JSON Converter →

Rebuild flat CSV tables back to structured JSON.

JSON to YAML Converter →

Transform JSON strings into readable YAML syntax.

YAML to JSON Converter →

Re-parse YAML files back to JSON.

Markdown to HTML Converter →

Compile Markdown strings to ready-to-use HTML code.

Encoding & Cryptography

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Base64 Encoder / Decoder →

Encode unicode text or decode Base64 strings.

URL Encoder / Decoder →

Percent-encode or decode URL query parameters.

JWT Decoder Online →

Decode header and payload claims of JSON Web Tokens.

SHA-256 & MD5 Hash Generator →

Generate MD5, SHA-1, or SHA-256 checksums.

Mock Data & ID Generators

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UUID v4 & v7 Generator →

Create random UUID v4 or time-sortable UUID v7s.

Lorem Ipsum Generator →

Generate custom paragraphs of Latin filler text.

QR Code Generator Free →

Convert URLs or text into scan-ready QR codes.

Text, Time & Styling

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Unix Timestamp Converter →

Convert epochs to readable dates and vice-versa.

Cron Expression Generator →

Build and translate scheduled crontab cron expressions.

Text Case Converter →

Convert text casing (camelCase, snake_case, etc.).

Color Format Converter →

Convert values between HEX, RGB, and HSL colors.

Regex Tester Online →

Test regular expressions with matching and group captures.