Fast browser-based developer toolkit

Ship faster with practical tools for daily dev work

Format data, inspect payloads, generate secure values and solve repetitive tasks in seconds. No sign-up, no installs, no backend required.

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100% Client-side
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JSON Formatter JavaScript Regex Tester Base64 Encode Decode HTTP Headers Parser JSON Validator URL Parser

Built For Real Development Workflows

DevUtils focuses on practical utilities you need while building APIs, debugging payloads, testing data formats and handling security-related strings.

Each tool is lightweight, direct and designed to return useful output fast.

High-Demand Developer Tools

Start with the tools developers most often need while debugging API payloads, regular expressions, encoded strings and HTTP responses. These pages run in your browser and are linked directly from the homepage.

🧪 JavaScript Regex Tester Online Test RegExp patterns, flags, matches, indexes and capture groups. 🔐 Base64 Encode and Decode Online Encode or decode UTF-8 text for API payloads and auth headers. 📡 HTTP Headers Parser Online Parse raw request and response headers into readable JSON. 🧩 JSON Formatter, Validator and Beautifier Format, validate and minify JSON for APIs and config files.

Featured Tools

🧩 JSON Formatter 🧪 Regex Tester 🔐 Base64 Encoder / Decoder 🔑 Password Generator 🛡 Password Strength Checker 🎨 Color Picker

Developer Guides

Short practical guides for common debugging tasks. Each guide links to the matching DevUtils tool so you can learn the workflow and run the check immediately.

🧪 How to Test JavaScript Regex Patterns Avoid invalid flags, missed capture groups and patterns that freeze a tab. 🔐 How Base64 Works in Basic Auth Encode username:password strings and understand why Base64 is not encryption. 📡 How to Debug HTTP Headers, CORS and Cache Inspect headers copied from DevTools, curl, proxies or server logs.

Popular Tools

🆔 UUID Generator ⏱ Timestamp Converter 🔗 Slug Generator 📊 Word Counter

Explore Categories

🧩 JSON Tools Format, validate, compare, convert and minify JSON 💻 Code Tools Beautify, minify and format CSS, JS, SQL and cron 🔍 Parser Tools Parse URLs, query strings and HTTP headers 🔐 Encoding Tools Base64, HTML, URL, image and JSON escaping 🧪 Validation Tools Email, IP, UUID and password checks 🛡 Security Tools Password, hash and JWT utilities 🔤 Text Tools Case, slug, counters and diff ⚙️ Utility Tools Dates, timestamps, random numbers and base conversion 🎨 Color Tools Pick colors and convert HEX and RGB values 📄 HTML Tools Preview, minify and convert HTML and Markdown 🧪 Regex Tools Test, replace and explore regular expressions