All Free Online Tools & Utilities

Format, beautify, validate, and minify JSON data instantly. Paste messy JSON and get clean, readable output in one click.

Validate JSON syntax instantly. Find missing commas, brackets, and quotes with exact line numbers.

Validate JSON against a schema.

Compare two JSON files side by side. Find differences, missing keys, and value changes instantly.

Convert JSON to CSV, XML, YAML, and Excel formats — and back. Free universal data format converter.

Test REST APIs online free — best Postman alternative. GET, POST, PUT, DELETE with JSON/XML body, CORS proxy, cURL import, multi-tab testing. No install.

Test SOAP XML services online free — best SoapUI alternative. Custom envelopes, SOAPAction headers, secure proxy. No Java, no install.

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

Encode and decode Base64 strings instantly.

Generate MD5, SHA-1, SHA-256 hashes instantly.

Generate secure, random passwords with custom rules.

Encode and decode URLs with percent-encoding.

Minify CSS code for production use.

Format and beautify CSS code for readability.

Convert between HEX, RGB, and HSL color formats.

Generate placeholder text for designs and mockups.

Convert cURL commands to structured JSON format.

Convert Unix timestamps to human-readable dates and vice versa.

Generate QR codes from text, URLs, or data instantly.

Generate, parse, and validate cron expressions easily with a visual editor, English translation, and live run time predictions.

Test and debug regular expressions in real-time with match highlighting, capture groups, search and replace, and pre-built templates.

Analyze your text with real-time statistics including word count, character count, estimated reading/speaking times, and keyword density mapping.

Compare two text snippets side-by-side or unified. Highlights line additions, removals, and precise character-level inline modifications.