16 Free Tools

Free Online Developer Tools

JSON formatter, Base64 encoder, JWT decoder, UUID generator, regex tester and more — right in your browser. No signup required.

JSON Formatter & Validator

Format, beautify, and validate JSON with customizable indentation.

Free onlineUse tool

Markdown Preview

Write Markdown and see a live HTML preview side by side.

Free onlineUse tool

Base64 Encoder & Decoder

Encode text to Base64 or decode Base64 strings back to plain text.

Free onlineUse tool

URL Encoder & Decoder

Encode special characters for URLs or decode URL-encoded strings.

Free onlineUse tool

JWT Decoder

Decode JSON Web Tokens to inspect header, payload, and expiration.

Free onlineUse tool

HTML Entity Encoder & Decoder

Encode special characters to HTML entities or decode them back.

Free onlineUse tool

JSON to YAML Converter

Convert between JSON and YAML formats instantly.

Free onlineUse tool

Unix Timestamp Converter

Convert between Unix timestamps, ISO 8601, and human-readable dates.

Free onlineUse tool

Number Base Converter

Convert numbers between binary, octal, decimal, and hexadecimal.

Free onlineUse tool

Color Converter

Convert colors between HEX, RGB, and HSL formats with live preview.

Free onlineUse tool

String Case Converter

Convert text between camelCase, snake_case, PascalCase, kebab-case, and more.

Free onlineUse tool

UUID Generator

Generate UUID v4 (random) and v1 (time-based) identifiers.

Free onlineUse tool

Hash Generator

Generate MD5, SHA-1, SHA-256, and SHA-512 hashes from text.

Free onlineUse tool

Lorem Ipsum Generator

Generate placeholder text in paragraphs, sentences, or words.

Free onlineUse tool

Regex Tester

Test regular expressions with live matching, highlighting, and capture groups.

Free onlineUse tool

Text Diff Viewer

Compare two texts and visualize the differences in unified or split view.

Free onlineUse tool

Want the full experience?

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