Developer Tools

Essential utilities for web developers and engineers. Format and validate JSON, decode JWTs, encode URLs and Base64, generate UUIDs, test regex, and more.

42 active tools

42 tools

Popular

JSON Formatter

Format, beautify, and validate JSON data.

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JSON Validator

Validate JSON syntax and detect errors instantly.

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JWT Decoder

Decode and inspect JWT tokens — header, payload, signature.

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Base64 Encoder

Encode and decode Base64 strings instantly.

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UUID Generator

Generate cryptographically secure UUIDs (v4).

Hash Generator

Generate MD5, SHA-1, SHA-256, SHA-512 hashes.

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Regex Tester

Test and debug regular expressions in real time.

URL Encoder

Encode and decode URLs and query parameters.

HTML Encoder

Encode and decode HTML entities.

Color Converter

Convert colors between HEX, RGB, HSL, CMYK, and more.

Timestamp Converter

Convert Unix timestamps to dates and vice versa.

Markdown Preview

Write and preview Markdown in real time.

JSON Minifier

Minify and compress JSON to reduce file size.

JSON Compare

Compare two JSON objects and highlight differences.

JSON to YAML

Convert JSON to YAML format instantly.

YAML to JSON

Convert YAML to JSON format instantly.

JSON to CSV

Convert JSON arrays to CSV format.

CSV to JSON

Convert CSV data to JSON format.

Base Converter

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

Cron Parser

Parse cron expressions and explain them in plain English.

HTML Formatter

Format and beautify HTML code with proper indentation.

XML Formatter

Format and beautify XML code with proper indentation.

XML to JSON

Convert XML to JSON format instantly.

JSON to XML

Convert JSON to XML format instantly.

Markdown to HTML

Convert Markdown to HTML with full syntax support.

CSS Minifier

Minify CSS code to reduce file size.

IP Validator

Validate IPv4 and IPv6 addresses and see detailed info.

CSS Beautifier

Beautify and format CSS code with proper indentation.

SQL Formatter

Format SQL queries with proper indentation and keyword casing.

SVG Optimizer

Optimize and minify SVG files to reduce file size.

HTML Minifier

Minify HTML to reduce file size for faster page loads.

UUID Validator

Validate UUID format and detect version.

UUID Decoder

Decode UUID structure and extract embedded information.

Extract Emails

Extract all email addresses from any text content.

HTML Preview

Preview HTML code rendered in real time.

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Diff Checker

Compare two texts and highlight line-by-line differences.

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Barcode Generator

Generate barcodes in Code 128, Code 39, EAN-13, and UPC formats.

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Unix Time Now

Live Unix timestamp with real-time updates and format converter.

Contrast Checker

Check WCAG AA/AAA color contrast ratios for accessibility.

Password Strength

Analyze password strength, character variety, and crack time.

JSON Table

Convert JSON arrays to a visual data table.

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CSV Viewer

View CSV data as a formatted table.

Other Categories

PDF

14 tools

Images

12 tools

Text

18 tools

SEO

8 tools

Calculators

13 tools

Generate

8 tools