Utils+

All Developer Tools

Complete collection of free online developer tools. Privacy-first, browser-based processing. No registration required.

Formatters

JSON Formatter

Format, validate, and beautify JSON data with syntax highlighting

jsonformatvalidate
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Encoders

Base64 Encoder/Decoder

Encode and decode Base64 strings quickly and securely

base64encodedecode
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URL Encoder/Decoder

Encode and decode URLs for safe transmission

urlencodedecode
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Generators

UUID Generator

Generate unique identifiers (UUID v4) instantly

uuidguidunique
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QR Code Generator

Create QR codes for URLs, text, WiFi, and more

qrcodegenerate
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Zap Tool

TODO: add description

zap-tool
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Security

Password Generator

Generate secure passwords with custom options

passwordgeneratesecure
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JWT Encoder/Decoder

Encode and decode JWTs, inspect claims, and verify HS256/RS256 signatures in-browser

jwtencodedecode
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Converters

Color Converter

Convert between HEX, RGB, HSL, and HSV color formats

colorhexrgb
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cURL to Code

Convert cURL commands to code in multiple languages (Python, JavaScript, Go, Java, etc.)

curlconvertcode
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Cron Expression

Convert between cron expressions and natural language. Preview schedules with timezone support.

cronschedulenatural language
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Text Tools

Text Diff Checker

Compare two texts and highlight differences

diffcomparetext
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Debugging

CORS Preflight Doctor

Diagnose CORS preflight issues and get minimal server fixes for your API requests.

corspreflightdebug
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HTTP Cache Explainer

Analyze HTTP caching behavior across browser, CDN, and proxy layers with minimal header fixes.

httpcacheheaders
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Checklist Tool

TODO: add description

checklist-tool
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KW Tool

TODO: add description

alphabetagamma
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SEO

Schema Markup Generator

Generate Google SERP schema markup (FAQ, HowTo, Article, Product, LocalBusiness, Recipe) with live preview

schemamarkupjson-ld
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Desc Tool

Handy demo tool with short description.

desc-tool
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Utilities

Sample Tool

TODO: add description

sample-tool
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Why Choose Our Developer Tools?

Privacy-First Design

All our tools process data entirely in your browser. Your sensitive information never leaves your device, ensuring complete privacy and security for your development work.

Professional Features

Each tool includes advanced options like file upload/download, bulk processing, custom formatting, and detailed analytics - features typically found in premium software.

Always Free

No registration, no limits, no hidden fees. All tools are completely free to use with full functionality available to everyone in the developer community.

Modern & Fast

Built with cutting-edge web technologies for instant results. Optimized for performance across all devices and browsers with responsive design.

Popular Use Cases

API Development

Format JSON responses, encode authentication tokens, generate UUIDs for resources, and validate data structures during API development.

Web Development

Encode URLs for safe transmission, convert colors between formats, generate secure passwords, and compare code changes during development.

Data Processing

Process Base64 encoded files, validate and format JSON data, generate QR codes for sharing, and analyze text differences.