Developer Tools

Formatters, converters, and generators for developers.

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Password Generator

Generate strong, secure passwords with customizable length and character options.

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JSON Formatter

Format, validate, and minify JSON. Beautify messy JSON data with syntax validation.

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Base64 Encoder/Decoder

Encode text to Base64 or decode Base64 strings. Fast and private.

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Markdown Preview

Write and preview Markdown in real-time. Perfect for README files, documentation, and blog posts.

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UUID Generator

Generate random UUID v4 identifiers instantly. Perfect for developers and database administrators.

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Robots.txt Generator

Create and validate robots.txt files. Control how search engines and bots crawl your website.

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Meta Tags Generator

Generate Open Graph, Twitter Cards, and standard HTML meta tags. Preview how your content will appear on social media.

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XML Sitemap Generator

Create sitemap.xml files with customizable URL priorities and change frequencies. Essential for SEO and search engine indexing.

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Schema.org Generator

Generate JSON-LD structured data for Article, Product, LocalBusiness, FAQ, and Organization schemas. Improve SEO with rich snippets.

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Hash Generator

Generate MD5, SHA-1, SHA-256, SHA-384, and SHA-512 hashes from text instantly. Perfect for checksums, data integrity, and security.

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JWT Decoder

Decode and inspect JSON Web Tokens instantly. View header, payload, and claims. Perfect for debugging authentication tokens.

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Timestamp Converter

Convert between Unix timestamps, ISO dates, and human-readable formats. Perfect for developers and system administrators.

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HTML Entity Encoder/Decoder

Encode text to HTML entities or decode HTML entities to text. Perfect for preventing XSS attacks and displaying special characters.

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Regex Tester

Test and debug regular expressions online. Visual regex tester with match highlighting and detailed match information.

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Image to Base64

Convert images to Base64 data URIs instantly. Supports JPG, PNG, GIF, WebP and more. Perfect for embedding images in HTML, CSS, or APIs.

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CSS Minifier & Beautifier

Format CSS with proper indentation or minify CSS to reduce file size. Beautify messy CSS code and optimize stylesheets for better performance.

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CSV to JSON Converter

Convert CSV files to JSON and JSON to CSV instantly. Supports custom delimiters, headers, and handles quoted values. Perfect for data migration and API integration.

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Free Email Validator

Verify email addresses instantly. Check format validity, detect typos, identify disposable domains, and ensure email correctness. Free email validation tool for developers and marketers.

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Free Password Strength Checker

Check password strength instantly. Analyze password security, estimate crack time, calculate entropy, and get recommendations to improve your password. Free password strength analyzer and security checker.

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User Agent Parser

Parse user agent strings to identify browser, operating system, device type, and version information. Essential tool for web developers, analytics, and debugging. Free user agent analyzer.

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HTTP Status Code Lookup

Comprehensive reference for HTTP status codes. Look up any status code meaning, understand response codes, and learn about HTTP error codes. Free status code checker and reference guide.

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ASCII Table

Complete ASCII character table with decimal, hex, octal, binary values. Look up ASCII codes, control characters, and printable characters. Free ASCII reference and character encoding tool.

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JSON <-> YAML Converter

Convert JSON to YAML and YAML to JSON instantly. Validate and format your data with this two-way converter.

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Cron Expression Builder

Build, parse, and understand cron expressions visually. Generate schedules with next run time previews for Linux, Unix, and cloud schedulers.

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SQL Formatter

Format, beautify, and minify SQL queries. Supports standard SQL, PostgreSQL, MySQL, and more with customizable indentation.

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SEO Analyzer

Analyze your HTML for SEO issues. Check meta tags, headings, Open Graph, and get actionable recommendations.

The Developer's Utility Belt

Stop searching for disparate tools. We've gathered the most essential developer utilities in one place. Debug, format, and convert code artifacts without installing heavy software.

Data Formatting

Prettify JSON, XML, and SQL instantly.

Security Utils

Generate secure passwords, UUIDs, and hashes (MD5, SHA).

Encoders/Decoders

Handle Base64, URL encoding, and JWT debugging with ease.