Developer Tools - Free Online Utilities

    Multiline Formatter
    Text Case Converter
    Lorem Ipsum Generator
    Text Sort & Dedup Tool
    Unicode & Emoji Browser
    CSV to JSON/XML Converter

    JSON Formatter
    JavaScript Formatter
    SQL Query Formatter
    XML Formatter & Validator
    Regex Tester
    Diff Tool
    Number Base Converter

    CSS Unit Converter
    CSS Formatter & Minifier
    HTML Entity Tool
    Markdown Editor & Preview
    Markdown to HTML Converter

    HTTP Request Builder
    QR Code Generator

    Hash Generator
    JWT Decoder
    Password Generator
    Base64 Encoder/Decoder
    URL Encoder/Decoder
    UUID/GUID Generator

    SVG Icon Generator
    Email Template Builder
    Image Optimizer & Converter
    Color Converter

    Environment Variables Manager
    Kubernetes YAML Generator
    Cron Expression Parser

    AI Prompt Generator & Optimizer
    OpenAI Token Counter & Cost Calculator
    AI-Powered Mock Data Generator

    World Time
    Timestamp Converter

    Developer Blog
    FAQ & Help
    Tools Comparison

HTML Entity Tool

Comprehensive HTML entity encoder/decoder with 200+ entities, category filtering, security analysis, and bulk processing.

Conversion Mode
Input (42 characters)
Output (0 characters)
Text Statistics
Input Characters42
Output Characters0
Size Change-42
Processing Mode
encode
Quick Actions