WebTools
Useful Tools & Utilities to make life easier.
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Website Status Checker - Check if Site is Down
Check if any website is up or down instantly -
Ping Tool - Measure Server Response Time
Measure server response time and network latency -
IP to Hostname - Reverse DNS Lookup
Convert IP address to hostname with reverse DNS -
Hostname to IP - DNS Lookup Tool
Convert hostname to IP address with DNS lookup -
IP Information - Detailed IP Address Lookup
Get detailed information about any IP address -
MX Lookup - Check Email Server Records
Lookup MX records for email server configuration -
User Agent Finder - Detect Your Browser & Device
Detect and display your browser's user agent string instantly -
What's My IP - Find Your IP Address & Location
Find your public IP address and location information instantly -
DNS Lookup - Check DNS Records
Lookup DNS records for any domain -
Open Port Checker - Check Open Ports
Check if server ports are open and accessible -
IP Subnet Calculator - Calculate Network Subnets
Calculate IP subnets network addresses and hosts -
HTML Entity Encoder - Encode Special Characters
Encode special characters to HTML entities -
HTML Entity Decoder - Decode HTML Entities
Decode HTML entities to readable characters -
URL Encoder - Encode URL Special Characters
Encode URLs and convert special characters to URL-safe format -
URL Decoder - Decode URL Encoded Strings
Decode URL-encoded strings back to readable format -
Text to Binary Converter - ASCII to Binary
Convert text to binary code instantly -
Binary to Text Converter - Binary to ASCII
Convert binary code to readable text instantly -
Text to Base64 Encoder - Encode Text Strings
Encode text to Base64 format instantly -
Base64 to Text Decoder - Decode Base64 Strings
Decode Base64 encoded strings to readable text -
ROT13 Encoder - Simple Text Cipher
Encode text using ROT13 substitution cipher -
ROT13 Decoder - Decode ROT13 Text
Decode ROT13 encoded text -
Unicode to Punycode Converter - Encode IDN Domains
Convert Unicode text to Punycode for domain names -
Punycode to Unicode Converter - Decode IDN Domains
Convert Punycode encoded domains to Unicode text -
Quoted-Printable Encoder - Encode Email Content
Encode text to Quoted-Printable format for emails -
Quoted-Printable Decoder - Decode Email Content
Decode Quoted-Printable encoded email text -
Image Rotate - Rotate Images Any Angle
Rotate images by 90 180 270 degrees or custom angle -
Image to Grayscale - Convert to Black and White
Convert color images to grayscale black and white -
Image Compressor - Reduce Image File Size
Compress images to reduce file size without quality loss -
Image Compressor Batch
Compress multiple images at once with quality control. -
Image Resizer - Resize Images Online
Resize images by pixels or percentage -
SVG to PNG Converter
Convert SVG markup or files to PNG client-side. -
Favicon\/Text Logo Maker
Create simple text logos and favicons via canvas. -
Image Watermark
Add text watermark overlays to images client-side. -
QR Code Generator - Create Custom QR Codes
Create custom QR codes for URLs text contact info and more -
Barcode Generator
Generate Code128, EAN-13, and Code39 barcodes. -
QR Code Reader - Scan and Decode QR Codes
Scan and decode QR codes from images -
Image to Base64 Converter - Encode Images
Convert images to Base64 encoded strings -
JPG to PNG Converter - Convert JPEG to PNG
Convert JPG\/JPEG images to PNG format -
JPG to WEBP Converter - Compress JPEG Images
Convert JPG\/JPEG images to WEBP format -
PNG to JPG Converter - Convert PNG to JPEG
Convert PNG images to JPG\/JPEG format -
PNG to WEBP Converter - Optimize Images
Convert PNG images to WEBP for better compression -
WEBP to JPG Converter - Convert WEBP to JPEG
Convert WEBP images to JPG\/JPEG format -
WEBP to PNG Converter - Convert WEBP Images
Convert WEBP images to PNG format -
Image OCR - Extract Text from Images
Extract and recognize text from images with OCR -
Markdown to HTML Converter - Convert MD to HTML
Convert Markdown text to HTML markup -
HTML to Markdown Converter - Convert HTML to MD
Convert HTML markup to Markdown syntax -
CSV to JSON Converter - Convert CSV Data to JSON
Convert CSV files to JSON format -
JSON to CSV Converter - Export JSON to CSV
Convert JSON data to CSV format -
JSON to XML Converter - Convert JSON Data
Convert JSON format to XML structure -
XML to JSON Converter - Parse XML Data
Convert XML structure to JSON format -
HTML Minifier - Compress HTML Code Online
Compress HTML code by removing whitespace and comments -
CSS Minifier - Compress CSS Code for Faster Load
Compress CSS code to reduce file size and improve load time -
JS Minifier - Compress JavaScript for Better Performance
Minify JavaScript code for faster page loading -
HTML Formatter - Beautify HTML Code Online
Beautify and format HTML code for better readability -
CSS Formatter - Beautify CSS Code with Proper Indentation
Format and beautify CSS code for better readability -
JS Formatter - Beautify JavaScript Code Online
Format and beautify JavaScript code for better readability -
SVG Optimizer
Clean and minify SVG markup client-side. -
Color Contrast Checker
Check WCAG contrast for foreground\/background colors. -
Code Formatter Combo
Format HTML, CSS, and JavaScript in one tool. -
RGB to Hex Converter - Color Code Converter
Convert RGB color values to hexadecimal color codes -
Hex to RGB Converter - Hex Color to RGB
Convert hexadecimal color codes to RGB values -
JSON Beautifier - Format and Prettify JSON
Beautify and format JSON with proper indentation -
JSON Validator - Validate JSON Syntax
Validate and check JSON syntax for errors -
JSON Diff Viewer
Compare two JSON documents with highlighted changes. -
Timestamp Converter - Unix Time to Date Converter
Convert Unix timestamps to human-readable dates and vice versa -
HTML Table Generator
Generate HTML tables with header and sample data. -
HTML Code Editor - Live HTML CSS JS Editor
Edit and preview HTML CSS JavaScript code live -
SEO Tags Generator - Meta Tags Creator for Better Rankings
Generate SEO meta tags for better search engine optimization -
HTML Meta Preview
Preview SERP-style title\/description with length hints. -
Flexbox Playground
Play with flexbox alignment, direction, wrap, and gap. -
Twitter Card Generator - Create Twitter Meta Tags
Generate Twitter Card meta tags for better social sharing -
Privacy Policy Generator - Create Legal Privacy Policy
Generate customizable privacy policy for your website -
Terms of Service Generator - Create Legal Terms
Generate customizable terms of service for your website -
Robots.txt Generator - Create SEO Robot Rules
Generate robots.txt file for search engine crawling -
HTACCESS Redirect Generator - Create 301 Redirects
.Generate HTACCESS redirect rules for Apache server -
Lorem Ipsum Generator - Placeholder Text Generator
Generate placeholder Lorem Ipsum text for design projects -
HTML Tags Stripper - Remove HTML Tags from Text
Remove all HTML tags and extract plain text -
JavaScript Obfuscator - Protect JS Code
Obfuscate JavaScript code to protect intellectual property -
SQL Beautifier - Format SQL Queries
Format and beautify SQL queries with proper indentation -
Color Picker Wheel - Choose Colors Visually
Pick colors with interactive color wheel -
SMTP Test Tool - Test Email Server Configuration
Test SMTP server connection and configuration -
Gzip Test - Check Gzip Compression
Check if website uses Gzip compression -
Website Source Code Downloader - Download HTML CSS JS
Download complete website source code (HTML CSS JavaScript) -
Text Cleaner - Clean and Fix Text Formatting
Remove extra spaces and fix text formatting -
Email Extractor - Extract Email Addresses from Text
Extract all email addresses from text or code -
URL Extractor - Extract Links from Text
Extract all URLs and links from text or HTML -
Word Count Tool - Character Counter & Text Statistics
Count words characters sentences and paragraphs instantly -
Reading Time Calculator
Estimate reading time from text and WPM. -
Regex Tester
Test and debug regular expressions with flags. -
Button Generator
Design CSS buttons with colors, radius, and hover states. -
Cron Expression Generator
Build and explain cron schedule expressions. -
JWT Token Generator
Generate and verify JWTs (HS256). -
Color Palette Generator
Generate harmonious color palettes and copy hex codes. -
Git Command Generator
Generate git commands for common workflows. -
Gradient Generator
Create CSS gradients and copy code. -
CSS Clip-Path Generator
Visually design polygon clip-path and copy CSS. -
SQL Query Builder
Build SELECT queries with filters, sort, limit. -
Caption Generator
Generate social captions by topic, tone, and length. -
Bio Generator
Generate short bios by role, tone, and keywords. -
ROI Calculator
Calculate return on investment with costs and revenue. -
QR Code Generator
Create QR codes from text, URLs, or vCard. -
QR vCard Presets
Quick vCard presets to generate contact QR codes. -
QR Wi\u2011Fi Presets
Generate Wi\u2011Fi QR codes with SSID, password, encryption, and hidden network options. -
QR Event Presets
Generate calendar event QR codes (VEVENT) with one-click presets. -
UTM Builder
Build campaign URLs with UTM parameters. -
UTM Templates
Build campaign URLs with one-click templates. -
UTM Bulk Builder
Append UTM parameters to multiple URLs at once. -
Character Counter
Count characters with live updates and copy. -
Fake Name Generator - Random Identity Generator
Generate random fake names and identities for testing -
YAML \u21c4 JSON Converter
Convert YAML to JSON and back with validation. -
Font Pairing Tool
Preview font combinations with live blocks. -
Meme Generator
Create memes with image upload and overlay text. -
Text Line Separator - Split Text into Lines
Separate and split text with custom delimiters -
Text to Slug Converter - Create URL-Friendly Slugs
Convert text to URL-friendly slug format -
Duplicate Lines Remover - Remove Duplicate Text Lines
Remove duplicate lines from text automatically -
Line Break Remover - Remove Extra Line Breaks
Remove unwanted line breaks from text -
Text Find and Replace - Batch Text Replacement
Find and replace text with batch replacement tool -
Text Reverser - Reverse Text and Strings
Reverse text characters words or lines -
Word Density Counter - Keyword Frequency Analysis
Count word frequency and keyword density for SEO -
Palindrome Checker - Detect Palindrome Words
Check if text is a palindrome -
Case Converter - Change Text Case (Upper Lower Title)
Convert text case between uppercase lowercase title case -
Random Text Line Picker - Select Random Line
Pick random line from text or list -
Text Repeater - Repeat Text Multiple Times
Repeat text or characters multiple times -
Paste and Share Text - Share Text Online
Paste text online and share with unique link -
Email Validator - Verify Email Address Format
Validate email addresses for correct syntax -
Random Number Generator - Generate Random Numbers
Generate random numbers within custom range -
Password Generator - Create Strong Secure Passwords
Generate strong secure random passwords with customizable options -
Password Strength Checker - Test Password Security
Test and measure password strength and security -
MD5 Generator - Create MD5 Hash from Text
Generate MD5 hash from any text or string -
SHA Generator - Create SHA Hash (SHA-1 SHA-256 SHA-512)
Generate SHA-1 SHA-256 SHA-512 hash values from text -
Bcrypt Generator - Secure Password Hashing
Generate bcrypt password hashes with salt -
Hash Generator - Create Multiple Hash Types
Generate various hash types from text strings -
UUID Generator - Create Unique Identifiers (v4)
Generate random UUID\/GUID version 4 identifiers -
Memory Storage Unit Converter - Bytes KB MB GB TB
Convert between data storage units (bytes to GB TB etc) -
Length Converter - Convert Distance Units
Convert between length and distance units -
Speed Converter - Convert Velocity Units
Convert between speed and velocity units -
Temperature Converter - Convert Celsius Fahrenheit Kelvin
Convert between temperature units (\u00b0C \u00b0F K) -
Weight Converter - Convert Mass Units
Convert between weight and mass units -
Domain Name Generator - Create Business Name Ideas
Generate creative domain name suggestions for your business -
Domain WHOIS Lookup - Check Domain Registration Info
Check domain registration and ownership information -
URL Parser - Extract URL Components
Parse and extract components from URLs -
SSL Checker - Check SSL Certificate Validity
Check SSL certificate validity and expiration dates -
HTTP Headers Parser - View HTTP Request Headers
Parse and analyze HTTP request and response headers -
URL Unshortener - Expand Shortened Links
Expand shortened URLs to reveal the final destination -
Redirect Checker - Trace URL Redirect Chains
Check and trace URL redirects and redirect chains -
HTTP Status Code Checker - Check Response Codes
Check HTTP status codes and response headers -
Glitch Text Generator - Create Zalgo Text Effects
Generate glitch and corrupted text effects -
Bubble Text Generator - Create Bubble Letter Text
Generate bubble letters and circled text -
Upside Down Text Generator - Flip Text Upside Down
Generate upside down flipped text -
Currency Converter - Live Exchange Rates
Convert currencies with real-time exchange rates -
Dice Roller - Roll Virtual Dice Online
Roll virtual dice with customizable sides -
Virtual Coin Flip - Flip Coin Online
Flip a virtual coin for random decisions -
Aim Trainer - Improve Clicking Accuracy
Practice and improve mouse clicking accuracy -
Age Calculator - Calculate Age from Birthday
Calculate age in years months days from birthdate -
Between Dates Calculator - Calculate Days Between Dates
Calculate days weeks months between two dates -
BMI Calculator - Calculate Body Mass Index
Calculate BMI and check healthy weight range -
Compound Profit Calculator - Investment Growth
Calculate compound interest and investment returns -
Interest Calculator - Simple and Compound Interest
Calculate simple and compound interest on loans investments -
Mortgage Calculator
Calculate monthly mortgage payments and total interest. -
GPA Calculator - Calculate Grade Point Average
Calculate cumulative GPA from grades and credits -
Count Down Timer
Countdown Timer that counts down in seconds, minutes and hours. -
Stop Watch
Fast Stopwatch and Online Countdown timer always available when you need it. -
Scientific Calculator - Advanced Math Calculator
Perform complex mathematical calculations -
World Clock - Global Time Zones
View current time across global time zones -
What's My Browser - Detect Browser Info
Detect your browser version and system information -
Credit Card Validator - Validate Card Numbers
Validate credit card numbers using Luhn algorithm -
Date Picker Calendar - Select Dates Easily
Interactive calendar for selecting dates -
YouTube Thumbnail Downloader - Download Video Thumbnails
Download YouTube video thumbnails in all sizes
Color Contrast Checker
Check WCAG contrast for foreground/background colors.
Tool Stats
Live
Views
415
Uses
0
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Inputs
Result
Aa
Ratio: –
WCAG AA: – • AAA: –
Related Tools
Color Contrast Checker (Quick Guide)
Calculate color contrast ratio and check WCAG compliance.
color contrast
wcag
accessibility
aa
aaa
Popular searches
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Key features
Quick checks
Validate inputs with clear results.
Actionable output
Understand what to fix and why.
Repeat testing
Re-run checks after changes easily.
How to use Color Contrast Checker
- Enter the value you want to verify or analyze.
- Click Check (or the main action button).
- Review the result and any warnings or details.
- Fix issues and re-run until it looks good.
Tips
- Test with a real-world example input.
- If a check fails, verify the input format and try again.
FAQ
What is Color Contrast Checker?
It is a web-based utility that helps you quickly complete a specific task related to "Color Contrast Checker" directly in your browser.
Is Color Contrast Checker free to use?
Most tools are free to use. Some tools or advanced features may require a premium plan depending on site settings.
Does this tool store my data?
Some tools run fully in the browser, while others may process data on the server. If your input is sensitive, avoid submitting secrets and only use trusted environments.
How do I get the best result?
Use clean inputs, review options, and re-run after making small adjustments until the output matches your needs.
Contact
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