ToolCollection

Developer Tools

Essential development utilities including JSON formatting, Base64 encoding/decoding, UUID generation, JWT decoding, and more. All tools run entirely in your browser — no data is sent to any server.

JSON Formatter

Format, validate, beautify, and inspect JSON code online with syntax highlighting.

JSON Validator

Validate JSON syntax and identify formatting errors with line and column pointers.

JSON Minifier

Minify and compress JSON data by stripping whitespace and line breaks.

Base64 Encoder

Encode text and strings to Base64 format online using UTF-8 encoding.

Base64 Decoder

Decode Base64 strings back to readable plain text and UTF-8 strings.

URL Encoder

Encode special characters in URLs using standard percent-encoding (RFC 3986).

URL Decoder

Decode percent-encoded URLs and query strings back to human-readable text.

UUID Generator

Generate cryptographically random RFC 4122 Version 4 UUIDs / GUIDs online.

JWT Decoder

Decode and inspect JSON Web Tokens (JWT) headers, payloads, and claims online.

Regex Tester

Test, debug, and validate regular expressions online with real-time match highlighting.

Number Base Converter

Convert numbers seamlessly between Binary, Decimal, Hexadecimal, and Octal bases.

Color Code Converter

Convert color codes between HEX, RGB, HSL, and CMYK formats with visual color picker.

HTML Entity Encoder & Decoder

Encode and decode HTML special characters and entities to prevent XSS and rendering bugs.

Markdown to HTML Converter

Convert Markdown syntax into clean HTML code with live formatted visual preview.

Cron Expression Generator

Generate, test, and understand crontab schedules with human-readable descriptions.

Unix Timestamp Converter

Convert Unix epoch timestamps to human-readable dates (UTC, ISO 8601, Local).

Developer Tools — Frequently Asked Questions

Frequently Asked Questions

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