Why are HTML entities necessary?

Characters like , and & have syntactic meaning in HTML. Entities like < and & prevent browsers from misinterpreting text as HTML markup.

Does this handle numeric entities like ’?

Yes. It decodes named entities (©), decimal codes (©), and hexadecimal codes (©).

HTML Entity Decoder & Encoder Online - Convert Named & Hex Entities ⚡

JSON to CSV Converter Transform nested or tabular JSON datasets into clean, spreadsheet-ready CSV files with custom delimiters and automatic key flattening.

Popular

CSV to JSON Converter Instantly convert CSV files and spreadsheet data into valid, nicely indented JSON structures for web APIs, testing, and databases.

Core Tool

JSON to YAML Converter Convert JSON payloads into clean, indented YAML format with strict indentation for Docker, Kubernetes, and cloud configs.

DevOps

YAML to JSON Converter Translate YAML configurations into strictly formatted JSON for API consumption, programmatic testing, and database ingestion.

DevOps

JSON Formatter & Beautifier Transform messy, unformatted, or minified JSON into clean, readable code with syntax validation and 1-click indentation options.

Top Tool

SQL Query Formatter & Beautifier Beautify messy, single-line SQL queries with structured indentation and standard uppercase SQL keywords (SELECT, FROM, WHERE, JOIN).

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Markdown to HTML Converter Compile Markdown text into clean, semantic HTML5 code with instantaneous browser rendering and 1-click HTML copy.

Content

Base64 Encoder & Decoder Encode strings into RFC 4648 Base64 representation or decode Base64 payloads back to readable UTF-8 text.

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URL Encoder & Decoder Safely encode special characters into percent-encoded (%20, %26) URI components or decode encoded URLs back to human-readable strings.

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PX to REM Converter & Cheat Sheet Convert PX to REM and REM to PX in real-time with customizable base font size (16px default) and comprehensive typography reference tables.

High Search Vol

CSS clamp() Calculator for Fluid Typography Generate fluid, responsive font sizes and spacing that scale smoothly across mobile and desktop screens without media query breakpoints.

Modern CSS

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Essential

CSS Box Shadow Generator Design multi-layered CSS box shadows visually with real-time preview, opacity sliders, blur spread controls, and 1-click CSS code export.

Interactive UI

CSS Glassmorphism & Frosted Glass Generator Design sleek frosted glass UI elements with adjustable backdrop-filter blur, background opacity, outline highlights, and instant CSS export.

Trending UI

CSS Gradient Generator (Linear & Radial) Create multi-color linear and radial gradients with real-time canvas preview, custom angle rotation, and production-ready CSS rules.

Design

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SEO Core

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Crawl Control

.htaccess 301 Redirect & Security Generator Create tested Apache mod_rewrite directives: enforce HTTPS, consolidate canonical domains (www vs non-www), and set up permanent 301 redirects.

Apache

HTML Minifier & Compressor Strip unnecessary whitespace, redundant comments, and line breaks from HTML documents to boost page speed and lower bandwidth consumption.

PageSpeed

SHA-256 Hash Generator Compute 256-bit (64 hex characters) cryptographic hash checksums for any input string using browser-native Web Crypto APIs.

Cryptography

MD5 Hash Checksum Generator Calculate 32-character hexadecimal MD5 hash checksums for cache busting, database keys, and file integrity verification.

Checksum

Strong Password Generator & Entropy Checker Create cryptographically secure, high-entropy passwords and API secret keys using the Web Cryptography API random number generator.

Security

UUID v4 Generator (Single & Bulk) Generate standard RFC 4122 compliant version 4 UUIDs (Universally Unique Identifiers) for database primary keys, distributed systems, and API tracking.

RFC 4122

JWT (JSON Web Token) Debugger & Inspector Decode Base64Url encoded JWTs to inspect authentication headers, payload claims (iss, sub, exp), and verify token expiration in real-time.

API Security

Word, Character & Sentence Counter Calculate real-time text metrics: word count, characters, sentences, paragraphs, reading time, and estimated speaking duration.

Essential

String Case Converter (camelCase, snake_case, Title Case) Transform variable names, article headlines, and code identifiers between camelCase, snake_case, kebab-case, UPPERCASE, and Title Case.

Popular

URL Slug Generator (SEO Slugify) Transform blog post titles and page headings into clean, lowercase, hyphenated URL slugs optimized for search engine indexing.

SEO Core

Lorem Ipsum Dummy Text Generator Generate standard Cicero dummy placeholder text for website wireframes, UI mockups, and typography testing with custom paragraph counts.

Design

Duplicate Line Remover & Text Sorter Clean up email lists, keyword lists, and data exports by stripping duplicate entries, trimming extra spaces, and sorting alphabetically.

Utility

REM to PX Converter Convert REM units back to pixel dimensions with customizable root font sizes (16px default) for CSS layout development.

CSS3

HEX to RGB & HSL Color Converter Convert web colors across HEX (#3b82f6), RGB (rgb(59, 130, 246)), and HSL formats with interactive color preview and 1-click CSS copying.

Design

CSS Minifier & Optimizer Compress CSS stylesheets by stripping comments, spaces, and line breaks to minimize render-blocking stylesheet latency.

Performance

JavaScript Minifier & Code Compressor Compress JavaScript files safely by stripping multi-line and single-line comments, superfluous spaces, and newline characters.

Performance

SHA-512 Cryptographic Hash Generator Compute 512-bit (128 hexadecimal characters) SHA-2 family hashes for mission-critical checksums, blockchain verification, and token verification.

High Security

Text Diff Checker (Side-by-Side Compare) Compare two versions of code, configuration files, or documents side-by-side to highlight additions, deletions, and line modifications.

Developer Tool

HTML to Markdown Converter Convert raw HTML documents and CMS rich text into clean Markdown syntax for static site generators (Astro, Hugo, Jekyll) and documentation.

Content Migration

User Agent String Parser & Client Inspector Parse HTTP User-Agent header strings to identify browser names, software versions, operating systems, and device form factors.

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JSON to TypeScript Interface Generator Instantly transform raw JSON payloads into clean, idiomatic TypeScript interfaces and types for front-end React, Vue, and Node.js codebases.

TypeScript

Unix Timestamp & Epoch Converter Convert between Unix timestamps (seconds & milliseconds) and human-readable UTC/local date formats with live current timestamp counter.

Time Utility

Free QR Code Generator Online Create high-resolution QR codes for website URLs, contact info, and text strings. Custom sizes and immediate 1-click PNG image download.

Marketing

WCAG Color Contrast Ratio Checker Verify text and background color combinations against Web Content Accessibility Guidelines (WCAG 2.1) for Level AA and Level AAA compliance.

WCAG 2.1

Harmonious Color Palette Generator Create balanced design color palettes from any base HEX color: complementary, analogous, triadic, and monochromatic schemes with 1-click CSS copying.

Design System

HTML Entity Encoder & Decoder Safely escape reserved HTML characters (<, >, &, ", ') into named or numeric entities to prevent XSS vulnerabilities and rendering glitches.

Web Standard

SVG Code Cleaner & Optimizer Strip XML metadata, Illustrator/Figma export junk, and superfluous namespaces from SVGs to optimize asset payload weight for high Core Web Vitals.

Performance

CSS Pure Triangle Generator Design pure CSS triangles using transparent border geometry with custom direction, dimensions, color picker, and 1-click CSS export.

CSS Shapes

cURL to JavaScript Fetch & Python Converter Transform raw cURL command lines into clean, production-ready JavaScript fetch(), Python requests, or Axios API call snippets.

High Intent

HTML to React JSX & TSX Converter Transform raw HTML5 markup into compliant React JSX/TSX syntax: auto-replaces class with className, for with htmlFor, and self-closes tags.

React & Next.js

CSS Grid Layout Generator Design complex CSS grid structures with custom column/row counts and gaps. Preview your layout in real time and copy ready-to-use CSS rules.

Visual Builder

CSS Flexbox Playground & Generator Experiment with modern CSS Flexible Box properties visually. Tweak alignments, wrapping, and spacing with instant live preview and 1-click CSS export.

Interactive

Online Regex Tester & Debugger Evaluate regex patterns against sample text in real time with visual match highlighting, capture group breakdown, and ready-to-use common pattern presets.

High Traffic

Bcrypt Hash Generator & Verifier Create salted Bcrypt password hashes and test password matches against existing hashes locally in your browser with zero network exposure.

Backend Security

JSON to JSON Schema Converter Auto-generate structured draft-07 compliant JSON Schema definitions from any JSON input with type inference and automatic required properties.

API Tools

URL Parser & Query String Editor Dissect any web URL into its fundamental protocol, hostname, path, and query parameters. Edit or add parameters in a table and rebuild updated URLs instantly.

Developer Utility

Markdown Table Generator & Editor Create and edit structured Markdown tables with an interactive GUI table builder. Supports column alignment and instant 1-click Markdown copying.

Documentation

Cron Expression Generator & Explainer Generate valid crontab schedule expressions with visual interval controls and instant human-readable English translation for Linux and cloud schedulers.

DevOps & Cloud

Campaign URL Builder & UTM Generator Construct validated marketing campaign URLs with proper UTM parameters for GA4, newsletters, social media, and paid ads with instant 1-click copy.

SEO & Growth

CIDR Subnet Calculator & IPv4 Range Finder Instantly calculate network netmasks, broadcast addresses, usable IP address ranges, and total host capacities from any IP and CIDR prefix.

DevOps & Network

Tailwind CSS Color Palette Generator Pick any base HEX color and automatically generate a balanced 10-shade palette (50, 100, 200, 300, 400, 500, 600, 700, 800, 900, 950) for your Tailwind UI.

Frontend UI

Image to Base64 & Data URI Converter Drop or select PNG, JPG, WebP, or SVG files to instantly encode them into Base64 Data URIs, HTML image tags, and CSS background rules without uploading.

100% Private

Mock API Data & Fake JSON Generator Generate realistic placeholder JSON datasets with customizable record counts for prototyping frontend interfaces and testing API workflows.

API Mocking

Visual HTML Table Generator Build and customize structured HTML tables visually. Tweak table cells, headers, and alignments with instant 1-click semantic HTML export.

Webmaster Tool

JSON Diff & Comparison Tool Perform side-by-side structural comparison of two JSON payloads. Highlights modified, added, and deleted properties with zero server logging.

Debugging

Open Graph & Social Share Preview Generator Simulate social media share cards for Twitter, Facebook, and LinkedIn in real time. Validate image ratios and export ready-to-paste meta tags.

Social SEO

JSON-LD Schema Markup Generator Generate structured schema.org markup in JSON-LD format to qualify for Google rich search results, review stars, and FAQ accordion snippets.

Rich Snippets

Google SERP Snippet Simulator & Pixel Calculator Preview and optimize how your pages appear on Google search results. Real-time title pixel width warnings, mobile/desktop toggle, and rich star ratings.

SERP Preview

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API & Code

HMAC Hash & Signature Generator Generate cryptographic HMAC signatures with custom secret keys using the browser's hardware-accelerated WebCrypto API. Zero data transmitted over the network.

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XML to JSON Converter Parse and convert XML data into structured, indented JSON with zero server latency. Preserves tags, values, and attributes client-side.

XML & JSON

8-Value CSS Border Radius Generator Create organic blob shapes and custom corner curvatures using 8-value border-radius syntax. Visual sliders with instant copy-paste CSS.

Organic Shapes

CSS Text Shadow Generator Build multi-layered, striking CSS text shadows with real-time typography preview. Adjust horizontal/vertical offsets, blur radius, and shadow color.

Typography

JSON Path Finder & Tree Inspector Inspect and navigate nested JSON structures interactively. Click any key to copy its exact dot notation or JSONPath query directly to clipboard.

API Inspection

ASCII Text to Hex, Binary & Decimal Converter Convert plain text into binary (01010011...), hexadecimal (53 65 63...), decimal, and octal encodings with instant 1-click copy.

Binary & Hex

SQL to JSON Converter Convert SQL INSERT statements and database table dumps into structured JSON arrays. Automatically infers numbers, strings, and booleans.

DB Migration

JSON to XML Converter Transform complex JSON payloads and arrays into clean, indented XML documents. Supports root element naming and nested structures.

Data Serialization

TSV to JSON Converter Convert tab-delimited text copied directly from Microsoft Excel or Google Sheets into structured JSON arrays of objects.

Excel & Sheets

CSS Neumorphism (Soft UI) Generator Design tactile Soft UI components with dual light and dark shadow physics. Sliders for elevation, blur, radius, and shape curvature.

Soft UI

Color Tints & Shades Generator Produce an entire ramp of tints (white mixed) and shades (black mixed) from any brand color. Includes 1-click copy and WCAG contrast ratings.

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HTML Entity Decoder & Encoder Convert between HTML entities (named, decimal, hexadecimal) and literal characters with bidirectional instant conversion.

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Polygons & Shapes

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Vector & CSS

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Linux Chmod Permissions Calculator Interactive 3x3 permission grid for Owner, Group, and Others. Instantly computes numeric octal masks, symbolic notation, SUID/SGID bits, and terminal commands.

Sysadmin

IP Range to CIDR Subnet Calculator Calculate the minimal set of CIDR subnet blocks covering any IP address range (IPv4). Ideal for cloud security groups, AWS VPC, UFW, and routing tables.

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CSS Keyframes Animation Generator Create smooth CSS @keyframes animations with interactive presets, timing functions, durations, iterations, and 1-click ready-to-paste CSS rules.

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Base64 to Image Decoder & Previewer Paste any Base64 encoded string or image Data URI to instantly decode, inspect width/height and file size, and download the original PNG, JPG, WebP, or SVG file.

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Online HTML Entity Decoder & Encoder

Eliminating Character Encoding Corruptions with HTML Entities

Frequently Asked Questions

Why are HTML entities necessary?

Does this handle numeric entities like ’?

Related Text & Content Utilities

Word, Character & Sentence Counter

String Case Converter (camelCase, snake_case, Title Case)

URL Slug Generator (SEO Slugify)

Lorem Ipsum Dummy Text Generator

Online HTML Entity Decoder & Encoder

Eliminating Character Encoding Corruptions with HTML Entities

Frequently Asked Questions

Why are HTML entities necessary?

Does this handle numeric entities like ’?

Related Text & Content Utilities

Word, Character & Sentence Counter

String Case Converter (camelCase, snake_case, Title Case)

URL Slug Generator (SEO Slugify)

Lorem Ipsum Dummy Text Generator

Embed HTML Entity Decoder & Encoder on Your Site

Share Tool