Developer Tools
Essential utilities for developers: formatters, encoders, and more.
GitHub README Generator
Build a polished README from a form: features, install steps, usage, screenshots, license, author, Shields badges, and Simple / Professional / Open-source templates. Live preview and copy Markdown.
Number Base Converter (Decimal/Binary/Hex)
Convert integers between decimal, binary, octal, and hexadecimal instantly for programming and debugging workflows.
JSON Formatter
Format, validate, and minify JSON instantly. Syntax highlighting, error detection, and tree view. Free online JSON formatter for developers.
Markdown Formatter
Clean and standardize Markdown in your browser: fix spacing, headings, lists, fenced code blocks, and blank lines. Strict, readable, and diff view modes.
JSON to Struct Converter
Convert JSON into typed structs/interfaces for Rust (Serde), Go, TypeScript, and Kotlin. Save developer time with instant schema generation.
CSV to JSON Converter
Convert CSV rows into formatted JSON arrays instantly. Great for API payload prep, migrations, and quick data cleaning.
JSON Diff Checker
Compare two JSON documents and inspect added, removed, and changed paths with structured output for debugging and reviews.
XML to JSON Converter
Convert XML documents into structured JSON output instantly. Useful for API integrations, config transformation, and debugging.
XML Validator & Formatter
Validate XML syntax and auto-format it into readable, indented output for faster debugging and transformation workflows.
YAML Validator & Formatter
Validate YAML syntax and format it into clean, consistent indentation for configs, CI files, and infra manifests.
YAML to JSON Converter
Convert YAML documents into formatted JSON output instantly for APIs, scripts, and data transformations.
JSON to YAML Converter
Convert JSON into readable YAML for infrastructure files, CI pipelines, and configuration-driven workflows.
SQL to TypeScript Interface
Convert SQL CREATE TABLE statements into TypeScript interfaces. Keep frontend models aligned with database schema quickly.
Bcrypt & Argon2 Tester
Test and verify bcrypt or argon2 hash formats locally. Validate password hash behavior with privacy-friendly, in-browser checks.
JWT Debugger
Decode JWT header and payload locally in your browser. Inspect exp/iat claims and token metadata without sending tokens to a server.
Docker Compose & Kubernetes YAML Builder
Generate clean Docker Compose and Kubernetes YAML using a simple form. Great for quick starter deployments.
chmod Calculator
Visual chmod calculator for Linux file permissions. Toggle read/write/execute and get octal values like 755, 644 instantly.
Log Parser
Paste raw logs and instantly highlight errors, warnings, timestamps, and stack traces for faster debugging.
Base64 Encoder / Decoder
Encode plain text to Base64 and decode Base64 back to text instantly. Useful for tokens, payloads, and debugging.
Regex Tester
Test regular expressions against sample text with live match positions and flag support.
HTML Minifier
Minify HTML by stripping comments and unnecessary whitespace for smaller payloads.
HTML to Markdown Converter
Convert HTML to clean Markdown in your browser. Paste HTML or fetch a page, strip nav and ads, detect main content, optional GitHub Flavored Markdown, split preview, copy and download.
CSS Beautifier
Beautify messy CSS into clean, readable, and properly indented styles for easier debugging.
JWT Decoder
Decode JWT header and payload claims instantly in-browser without sending tokens to external servers.
API Tester (Basic)
Send basic API requests with method, URL, headers, and body. Inspect status, response headers, and body quickly.
Password Generator
Generate strong random passwords with configurable length and character sets. Client-side and privacy-first password generator.
UUID Generator
Generate RFC 4122 version 4 UUIDs instantly for databases, APIs, and request tracing. Fast and browser-based.
QR Code Generator
Create QR codes for links, text, and contact details instantly. Download generated QR images directly from your browser.
Barcode Generator
Generate clean CODE128 barcodes for labels, inventory, and product workflows directly in your browser.
Hash Generator
Generate text hashes using MD5 and SHA algorithms instantly for checksums, integrity checks, and debugging workflows.
Encryption & Decryption Tool
Encrypt and decrypt text with password-based AES-GCM in your browser. Useful for secure sharing and local protection workflows.
Color Picker (HEX/RGB)
Convert colors between HEX and RGB, preview swatches instantly, and copy accurate values for UI and design workflows.
Gradient Generator
Generate smooth color gradients between any two HEX colors with customizable stops for CSS and design workflows.
Palette Generator
Generate balanced color palettes from a base color using analogous, complementary, triadic, and monochrome modes.
Contrast Checker
Check foreground and background color contrast ratio against WCAG AA and AAA accessibility standards.
Image Color Extractor
Upload an image and extract dominant color swatches with percentage distribution for branding and UI design.
Data Storage Converter
Convert a value to total bytes using binary 1024 multiples.
Cron Expression Descriptor
Describe common five-field cron patterns in simple phrases.