Frontend Development Tools

Curated tools for website developers and owners, for analysis (by URL) and exploration (to create or generate something). (Browse tools by tag.)

Test websites in more than 90 tools using Frontend Dogma’s Site Check.

Analysis

General
Accessibility
Code
Conformance
Network
Performance
Security
SEO/SEM
Uncategorized
(Exploration)

General

Website Analyzer (Accessify) (toot or tweet)
Website Analyzer (Easy Counter) (toot or tweet)
Website Analyzer (Fagan Finder) (toot or tweet)
Website Analyzer (Frontend Dogma) (toot or tweet)
Website Analyzer (Nibbler) (toot or tweet)
Website Analyzer (Open Admin Tools) (toot or tweet)
Website Analyzer (StatsCrop) (toot or tweet)
Website Experience Analyzer (toot or tweet)
Website Hosting Checker (toot or tweet)
Website Hosting Location Checker (toot or tweet)
Website Press Monitor (toot or tweet)
Website Technology Analyzer (BuiltWith) (toot or tweet)
Website Technology Analyzer (My Codeless Website) (toot or tweet)
WHOIS Analyzer (DomainTools) (toot or tweet)
WHOIS Analyzer (Whois.com) (toot or tweet)
WHOIS and Hosting Analyzer (toot or tweet)

Accessibility

Accessibility Checker (AccessibilityChecker.org) (toot or tweet)
Accessibility Checker (FAE) (toot or tweet)
Accessibility Checker (WAVE) (toot or tweet)
Color Blindness Emulator (toot or tweet)
Design Responsiveness Tester (Am I Responsive) (toot or tweet)
Design Responsiveness Tester (Website Planet) (toot or tweet)
Image Accessibility Analyzer (toot or tweet)
Mobile-Friendliness Bulk Checker (toot or tweet)
Mobile-Friendliness Checker (toot or tweet)
Section 508, WCAG 2.0, and BITV 1.0 Checker (toot or tweet)
WCAG 2.0 and 2.1 Checker (toot or tweet)
WCAG 2.0 Checker (toot or tweet)

Code

CMS Detector (toot or tweet)
Code Quality Checker (toot or tweet)
Code Viewer (toot or tweet)
Content-to-Code Ratio Calculator (toot or tweet)
CSS Analyzer (CSS Stats) (toot or tweet)
CSS Analyzer (Lea Verou) (toot or tweet)
CSS Analyzer (Project Wallace) (toot or tweet)
CSS Efficiency Checker (toot or tweet)
CSS Quality Checker (toot or tweet)
HTML “hreflang” Checker (toot or tweet)
HTML Form Checker (toot or tweet)
HTML Outline Extractor (toot or tweet)
IndieWeb Checker (toot or tweet)
Inline CSS Checker (toot or tweet)
Internationalization Checker (toot or tweet)
Link and Image Checker (toot or tweet)
Link Checker (Dead Link Checker) (toot or tweet)
Link Checker (Dr. Link Check) (toot or tweet)
Link Checker (W3C) (toot or tweet)
Metadata Viewer (toot or tweet)
Microformats Analyzer (toot or tweet)
Sitemap Checker (toot or tweet)
Structured Data Tester (toot or tweet)
WordPress Plugin Detector (toot or tweet)
WordPress Theme Detector (toot or tweet)

Conformance

AMP Bulk Validator (toot or tweet)
AMP Validator (toot or tweet)
CSS Validator (toot or tweet)
DAML Validator (toot or tweet)
Facebook Validator (toot or tweet)
hCard Validator (toot or tweet)
HTML Validator (toot or tweet)
LinkedIn Validator (toot or tweet)
P3P Validator (toot or tweet)
RDF Validator (toot or tweet)
robots.txt Validator (Merkle) (toot or tweet)
robots.txt Validator (Ryte) (toot or tweet)
RSS and Atom Feed Validator (toot or tweet)
SBML Validator (toot or tweet)
Sitemap Validator (toot or tweet)
SVG Validator (toot or tweet)
Twitter Validator (toot or tweet)
XML Schema Validator (toot or tweet)
XML Validator (toot or tweet)
XML Well-Formedness Checker and Validator (toot or tweet)
XML-RPC Validator (toot or tweet)

Network

Availability Checker (isitdownrightnow.com) (toot or tweet)
Availability Checker (NotOpening.com) (toot or tweet)
Availability Checker (Regional) (Site24x7) (toot or tweet)
Availability Checker (Regional) (Uptime.com) (toot or tweet)
C Class IP Checker (toot or tweet)
DNS Analyzer (MxToolbox) (toot or tweet)
DNS Analyzer (NsLookup.io) (toot or tweet)
DNS Propagation Checker (toot or tweet)
Domain and Server Health Checker (toot or tweet)
Domain, IP, and Email Blacklist Checker (toot or tweet)
HTTP Headers Tester (toot or tweet)
HTTP Request Map Generator (toot or tweet)
HTTP Response Analyzer (toot or tweet)
HTTP Status Code Checker (toot or tweet)
HTTP/2 Tester (toot or tweet)
HTTP/3 Tester (toot or tweet)
IP Address Tracker (toot or tweet)
IP History Checker (toot or tweet)
MX Lookup (toot or tweet)
Name Server Lookup (toot or tweet)
Ping Tool (toot or tweet)
Ping Tool (Regional) (toot or tweet)
Redirect Checker (toot or tweet)
Server Port Scanner (toot or tweet)
Traceroute Tool (toot or tweet)
URL Parser (toot or tweet)
URL Shortener Redirect Checker (toot or tweet)
Website Blockade Checker for China (Comparitech) (toot or tweet)
Website Blockade Checker for China (Dotcom-Tools) (toot or tweet)
Website Blockade Checker for England (toot or tweet)
Website Blockade Checker for Iran (toot or tweet)
Website Blockade Checker for Russia (toot or tweet)

Performance

CDN Use Checker (toot or tweet)
Gzip and Brotli Checker (toot or tweet)
Gzip Checker (toot or tweet)
HTML Size Analyzer (toot or tweet)
Image Performance Analyzer (toot or tweet)
Load Time and Object Checker (toot or tweet)
Load Time Checker (toot or tweet)
Mobile Readiness Tester (toot or tweet)
PageSpeed Results Comparer (toot or tweet)
Web Vitals Analyzer (Calibre) (toot or tweet)
Web Vitals Analyzer (SpeedVitals) (toot or tweet)
Website Browser and Location Speed Tester (toot or tweet)
Website Performance Analyzer (GTmetrix) (toot or tweet)
Website Performance Analyzer (KeyCDN) (toot or tweet)
Website Performance Analyzer (PageSpeed) (toot or tweet)
Website Performance Analyzer (Pingdom) (toot or tweet)
Website Performance Analyzer (Uptime.com) (toot or tweet)
Website Performance Analyzer (Uptrends) (toot or tweet)
Website Performance Analyzer (Waterfaller) (toot or tweet)
Website Performance Analyzer (wattspeed) (toot or tweet)
Website Performance Analyzer (WebPageTest) (toot or tweet)

Security

Abuse Contact Lookup (toot or tweet)
Content Security Policy Validator (CSP Validator) (toot or tweet)
Content Security Policy Validator (Google) (toot or tweet)
Cookie Use Checker (toot or tweet)
Cross-Site WebSocket Hijacking Tester (toot or tweet)
DNSSEC Checker (toot or tweet)
Domain or IP Spam Checker (toot or tweet)
Email Blacklist Checker (toot or tweet)
Malware and Security Scanner (toot or tweet)
Site and Origin Comparer (toot or tweet)
SPF Record Checker (toot or tweet)
SSL Checker (Qualys) (toot or tweet)
SSL Checker (SSL Shopper) (toot or tweet)
Virus Scanner (toot or tweet)
Website Certificate Fingerprint Checker (toot or tweet)
Website Headers Analyzer (Dries Buytaert) (toot or tweet)
Website Headers Analyzer (Mozilla) (toot or tweet)
Website Headers Analyzer (Security Headers) (toot or tweet)
Website Privacy Checker (toot or tweet)
Website Scam Checker (toot or tweet)
Website Security Checker (Google) (toot or tweet)
Website Security Checker (Norton) (toot or tweet)

SEO/SEM

“nofollow” Checker (toot or tweet)
Ads and Keywords Analyzer (toot or tweet)
Backlink Analyzer (Ahrefs) (toot or tweet)
Backlink Analyzer (Monitor Backlinks) (toot or tweet)
Backlink Analyzer (seobility) (toot or tweet)
Backlink Anchor Text Analyzer (toot or tweet)
Canonical URL Checker (toot or tweet)
Domain Age Checker (toot or tweet)
Google Results Previewer (toot or tweet)
Google Rich Results Checker (toot or tweet)
Google Title Rewrite Checker (toot or tweet)
Keyword Cloud Generator (toot or tweet)
Keyword Density Checker (toot or tweet)
Keyword Position Checker (toot or tweet)
Keyword Use Checker (toot or tweet)
Market Finder (toot or tweet)
Metadata Analyzer and Search Engine Emulator (toot or tweet)
On-Page Optimizer (toot or tweet)
Plagiarism Checker (toot or tweet)
Plagiarism Search and Spell Checker (toot or tweet)
Search Engine Emulator (toot or tweet)
SEM Analyzer (toot or tweet)
SEO Analyzer (SEO SiteCheckup) (toot or tweet)
SEO Analyzer (Spotibo) (toot or tweet)
Social Markup Previewer and Generator (Meta Tags) (toot or tweet)
Social Markup Previewer and Generator (OpenGraph) (toot or tweet)
Social Media Checker (toot or tweet)
Social Signal Counter (toot or tweet)
Website Data Analyzer and Value Estimator (siteprice.org) (toot or tweet)
Website Data Analyzer and Value Estimator (Website Value Calculator) (toot or tweet)
Website Data Analyzer and Value Estimator (Worth Of Web) (toot or tweet)
Website Value Estimator (toot or tweet)

Uncategorized

Favicon Checker (Favicon Generator) (toot or tweet)
Favicon Checker (Favicon Kit) (toot or tweet)
Mobile Data Cost Calculator (toot or tweet)
Progressive JPEG Checker (toot or tweet)
Readability Bulk Checker (toot or tweet)
Readability Checker (Juicy Studio) (toot or tweet)
Readability Checker (WebFX) (toot or tweet)
RSS Feed Parser (toot or tweet)
Spell Checker (toot or tweet)
Text Analyzer (toot or tweet)
Website Carbon Footprint Calculator (Beacon) (toot or tweet)
Website Carbon Footprint Calculator (Wholegrain Digital) (toot or tweet)
Website Change Monitor (toot or tweet)
Website Translator (toot or tweet)

Exploration

Browser Testing
Code Auditing
Code Generation
Code Optimization
Colors
Content
Conversion
Images
Network
Security
SEO/SEM
Typography
Uncategorized
(Analysis)

Browser Testing

Android and iOS Emulators (toot or tweet)
Browser Details Checker (toot or tweet)
Browser Performance Testers (toot or tweet)
Internet Explorer Viewer (toot or tweet)
Progressive Web App Feature Detector (toot or tweet)
Screenshot Generator (toot or tweet)
Screenshot Generator for Windows and Android (toot or tweet)
Screenshot Generator for Windows, macOS, and Linux (toot or tweet)
User Agent Detector (Google) (toot or tweet)
User Agent Detector (Martin Hassman) (toot or tweet)
Viewport Emulator (toot or tweet)
Viewport Size Determiner (toot or tweet)

Code Auditing

AST Viewer (toot or tweet)
CSS Specificity Calculator (toot or tweet)
CSS Specificity Visualizer (toot or tweet)
Google Chrome Origin Trial Token Decoder (toot or tweet)
HTML Diff (toot or tweet)
HTML Table Linearizer (toot or tweet)
JavaScript Call Stack Visualizer (toot or tweet)
JSON Web Token Debugger (toot or tweet)
Live DOM Viewer (toot or tweet)
Package Size Checker (toot or tweet)
PostgreSQL Query Plan Analyzer and Visualizer (toot or tweet)
Regex Tester (toot or tweet)
Regex Tester for Python (toot or tweet)
Regex Visualizer (toot or tweet)
TypeScript Tester (toot or tweet)
Unquoted Attribute Value Validator (toot or tweet)
Vue.js Template Analyzer (toot or tweet)
XPath Checker (toot or tweet)

Code Generation

.htaccess Generator (toot or tweet)
.htpasswd Generator (toot or tweet)
Cap Sizer (toot or tweet)
Checkbox Generator (toot or tweet)
Contact Form Generator (toot or tweet)
Cookie Consent Generator (toot or tweet)
Cron Schedule Generator (toot or tweet)
CSS 3 Code Generator (toot or tweet)
CSS Animated Gradient Generator (toot or tweet)
CSS Animation Generator (toot or tweet)
CSS Bookmarklet Generator (toot or tweet)
CSS Border Image Generator (toot or tweet)
CSS Clamp Generator (toot or tweet)
CSS Clothoid Corner Generator (toot or tweet)
CSS Cubic Bézier Curve Generator (toot or tweet)
CSS Divider Generator (toot or tweet)
CSS Flexbox Generator (toot or tweet)
CSS Fluid Typography Generator (toot or tweet)
CSS Glassmorphism Generator (toot or tweet)
CSS Gradient Generator (Josh W. Comeau) (toot or tweet)
CSS Gradient Generator (Virtuosoft) (toot or tweet)
CSS Grid Layout Generator (Brad Woods) (toot or tweet)
CSS Grid Layout Generator (Sarah Drasner) (toot or tweet)
CSS Neumorphism Generator (toot or tweet)
CSS Prefixer (toot or tweet)
CSS Quantity Query Generator (toot or tweet)
CSS Shadow Generator (Josh W. Comeau) (toot or tweet)
CSS Shadow Generator (Philipp Brumm) (toot or tweet)
CSS Sprite Generator (Sprite Cow) (toot or tweet)
CSS Sprite Generator (Toptal) (toot or tweet)
CSS Transforms Generator (toot or tweet)
CSS Triangle Generator (toot or tweet)
Data URI Generator (toot or tweet)
Design and Design Token Generator (toot or tweet)
Form Generator (toot or tweet)
Geo Tag Generator (toot or tweet)
Google Web Fonts Helper (toot or tweet)
GUID Generator (toot or tweet)
hCalendar Generator (toot or tweet)
hCard Generator (toot or tweet)
Hero Element Generator (toot or tweet)
Hex Color Shades Generator (toot or tweet)
HTML Template Generator (toot or tweet)
HTML/XML Character Escape Generator (toot or tweet)
JavaScript Character Escape Generator (toot or tweet)
JSON Generator (toot or tweet)
JSON-LD Schema Generator (Hall Analysis) (toot or tweet)
JSON-LD Schema Generator (Merkle) (toot or tweet)
Meta Elements Generator (toot or tweet)
Pop-Up Generator (toot or tweet)
QR Code Generator (toot or tweet)
robots.txt Generator (toot or tweet)
SQL Character Escape Generator (toot or tweet)
Structured Data Generator (toot or tweet)
SVG and CSS Gradient Generator (toot or tweet)
Table Generator (Accessify) (toot or tweet)
Table Generator (TablesGenerator.com) (toot or tweet)
URL Rewrite Generator (toot or tweet)
UUID Generator (toot or tweet)
XFN Link Generator (toot or tweet)
XSD/XML Schema Generator (toot or tweet)

Code Optimization

.htaccess Checker (toot or tweet)
Array Transformer (toot or tweet)
Code Formatter (Digital Inspiration) (toot or tweet)
Code Formatter (Pretty Printer) (toot or tweet)
CSS and JavaScript Un-Minifier (toot or tweet)
CSS Formatter (toot or tweet)
CSS Formatter and Minifier (toot or tweet)
CSS Formatter and Optimizer (toot or tweet)
CSS Linter (toot or tweet)
CSS Minifier (toot or tweet)
HTML Formatter (toot or tweet)
HTML Nesting Checker (toot or tweet)
HTML Optimizer (HTML De-crapulator) (toot or tweet)
HTML Optimizer (HtmlWasher) (toot or tweet)
HTML Optimizer and Minifier (toot or tweet)
HTML, CSS, and JavaScript Formatter (toot or tweet)
HTML, CSS, and JavaScript Minifier (toot or tweet)
HTML, CSS, JavaScript, JSON, and XML Un-Minifier (toot or tweet)
JavaScript Linter (JSLint) (toot or tweet)
JavaScript Linter (ValidateJavaScript) (toot or tweet)
JavaScript Minifier (toot or tweet)
JavaScript Obfuscator (toot or tweet)
JSON Formatter (Curious Concept) (toot or tweet)
JSON Formatter (FracturedJson) (toot or tweet)
JSON Validator (FreeFormatter.com) (toot or tweet)
JSON Validator (JSONCompare) (toot or tweet)
SQL Formatter (toot or tweet)
XML Formatter (toot or tweet)
XML XSD Checker (toot or tweet)
YAML Validator (toot or tweet)

Colors

Color Accessibility Checker (toot or tweet)
Color Blender (toot or tweet)
Color Code and Scheme Generator (toot or tweet)
Color Comparer (toot or tweet)
Color Contrast Analyzer (Acart Communications) (toot or tweet)
Color Contrast Analyzer (Jonathan Snook) (toot or tweet)
Color Contrast Analyzer (Polypane) (toot or tweet)
Color Contrast Analyzer (WebAIM) (toot or tweet)
Color Contrast Comparer (toot or tweet)
Color Extractor and Generator (toot or tweet)
Color Finder (toot or tweet)
Color Gradient Generator (toot or tweet)
Color Palette Extractor and Generator (BigHugeLabs) (toot or tweet)
Color Palette Extractor and Generator (Canva) (toot or tweet)
Color Scheme Generator (Adobe) (toot or tweet)
Color Scheme Generator (Coolors) (toot or tweet)
Color Scheme Generator (Genome) (toot or tweet)
Color Scheme Generator (Paletton) (toot or tweet)
Image Color Determiner (toot or tweet)

Content

Accessibility Evaluation Report Generator (toot or tweet)
Character Counter (toot or tweet)
Commit Message Linter (toot or tweet)
Content Analyzer (Plain English Campaign) (toot or tweet)
DMCA Notice Generator (toot or tweet)
Dummy Text Generator (toot or tweet)
Gunning Fog Index Calculator (toot or tweet)
Privacy Policy and Terms of Service Generator (toot or tweet)
Random Word Generator (toot or tweet)
Readability Checker (Hemingway Editor) (toot or tweet)
README Generator (toot or tweet)
Reverse Text Generator (toot or tweet)
Tag Cloud Generator (toot or tweet)
Text Diff (toot or tweet)
Word Cloud Generator (toot or tweet)
Word Counter (toot or tweet)

Conversion

Animated GIF to MP4 Converter (toot or tweet)
Archive Converters (toot or tweet)
Audio Converters (toot or tweet)
Base64 Encoder and Decoder (toot or tweet)
Binary Code Converter (toot or tweet)
C64-Style Image Converter (toot or tweet)
Case Converter (toot or tweet)
Centimeters to Pixels Converter (toot or tweet)
CIDR to IPv4 Converter (toot or tweet)
Code Converter (toot or tweet)
Color Converter (toot or tweet)
Color Converter (Hex to RGBA) (toot or tweet)
Color Converter (Hex, RGB, HSL, and LCH) (toot or tweet)
Color Converter (RGB to Hex) (toot or tweet)
Ebook Converters (toot or tweet)
English to IPA Converter (toot or tweet)
GeoCities-izer (toot or tweet)
HTML Encoder and Decoder (toot or tweet)
HTML Tag Remover (toot or tweet)
HTML to PDF Converter (toot or tweet)
HTML to PHP Converter (toot or tweet)
IDN Decoder (toot or tweet)
IDN Encoder (toot or tweet)
Image Converter (toot or tweet)
Image Converters (toot or tweet)
Image to Text Converter (toot or tweet)
JPEG to SVG Converter (toot or tweet)
JSON to CSV Converter (toot or tweet)
JSON to XML Converter (toot or tweet)
Less to CSS Converter (toot or tweet)
Markdown to HTML Converter (toot or tweet)
Morse Code Encoder and Decoder (toot or tweet)
Multi-Purpose Encoder and Decoder (toot or tweet)
Multi-Purpose File Converter (toot or tweet)
Number Converter (toot or tweet)
Online Video Converter (toot or tweet)
PDF to Office Converter (toot or tweet)
Pixels to Em Converter (toot or tweet)
Punycode Converter (toot or tweet)
Raster Image to SVG Converter (toot or tweet)
Raster to Vector Image Converter (toot or tweet)
Sass and SCSS to CSS Converter (toot or tweet)
String Converter (toot or tweet)
Text to ASCII Art Converter (toot or tweet)
Title Case Converter (toot or tweet)
Unicode Code Converter (toot or tweet)
Unix Time Converter (toot or tweet)
URL Encoder and Decoder (toot or tweet)
URL Slug Converter (toot or tweet)
Visual Basic to Python Converter (toot or tweet)
Web Page to Text Converter (toot or tweet)

Images

Animated GIF Generator (toot or tweet)
Aspect Ratio Calculator (toot or tweet)
AVIF and WebP Settings Comparer (toot or tweet)
Background Image Generator (toot or tweet)
Background Pattern Generator (DOODAD) (toot or tweet)
Background Pattern Generator (fffuel) (toot or tweet)
Background Pattern Generator (Patternify) (toot or tweet)
Black and White Photo Colorizer (DeepAI) (toot or tweet)
Black and White Photo Colorizer (ImageColorizer) (toot or tweet)
Brilliant Button Maker (toot or tweet)
C64-Style Logo Generator (toot or tweet)
Code Screenshot Generator (Carbon) (toot or tweet)
Code Screenshot Generator (Chalk.ist) (toot or tweet)
Decorative Image Generator (toot or tweet)
Dither Effect Generator (toot or tweet)
Dummy Image Generator (toot or tweet)
Favicon Generator (toot or tweet)
Favicon Generators (toot or tweet)
Flat Design Icon Generator (toot or tweet)
GIF Resizer (toot or tweet)
GIF Splitter (toot or tweet)
GIF Text Editor (toot or tweet)
Gradient Image Maker (toot or tweet)
Icon Font, SVG, PDF, and PNG Generator (toot or tweet)
Icon Generator (toot or tweet)
Image Art Generator (toot or tweet)
Image Background Remover (PhotoRoom) (toot or tweet)
Image Background Remover (remove.bg) (toot or tweet)
Image Cleaner (toot or tweet)
Image Compressor (Compressor.io) (toot or tweet)
Image Compressor (WebUtils) (toot or tweet)
Image Compressor and Resizer (toot or tweet)
Image Compressors (toot or tweet)
Image Cropper (toot or tweet)
Image Quality Enhancer (toot or tweet)
Image Rasterizer (toot or tweet)
Image Resizer and Editor (PicResize) (toot or tweet)
Image Resizer and Editor (resizemyimg.com) (toot or tweet)
JPEG Distorter (toot or tweet)
Line Drawing Generator (toot or tweet)
Logo Generator (Looka) (toot or tweet)
Logo Generator (Squarespace) (toot or tweet)
Photo Data Remover (toot or tweet)
Photo Editor (toot or tweet)
Photo Enlarger (Ojoy) (toot or tweet)
Photo Enlarger (Zygomatic) (toot or tweet)
Placeholder Generator (toot or tweet)
Profile Picture Generator (toot or tweet)
Progressive JPEG Generator (toot or tweet)
Random Favicon Generator (toot or tweet)
SVG Editor (toot or tweet)
SVG Optimizer (Daryll Doyle) (toot or tweet)
SVG Optimizer (Jake Archibald) (toot or tweet)
SVG Shape Generator (toot or tweet)
SVG URL Encoder (toot or tweet)
Tilt-Shift Photo Generator (toot or tweet)
Wave-Style SVG Generator (toot or tweet)

Network

Bandwidth Speed Tester (Bandwidth Place) (toot or tweet)
Bandwidth Speed Tester (BroadbandUK) (toot or tweet)
CIDR Calculator (toot or tweet)
Download Time Calculator (toot or tweet)
FTP Server Tester (toot or tweet)
HAR Analyzer and Visualizer (toot or tweet)
HTTP Request Generator (toot or tweet)
IP Detector (Frontend Dogma) (toot or tweet)
IP Detector (ipleak.net) (toot or tweet)
IPv6 Checker (toot or tweet)
Reverse IP and Domain Lookup (toot or tweet)
Reverse IP Lookup (toot or tweet)
Subnet Calculator (toot or tweet)
Wake-on-LAN Service (toot or tweet)

Security

“chmod” Calculator (toot or tweet)
AES Encrypter and Decrypter (toot or tweet)
Blowfish Hash Generator (toot or tweet)
Browser Fingerprint Checker (toot or tweet)
CSR Decoder (toot or tweet)
Device Vulnerability Checker (toot or tweet)
Executable File Analyzer (toot or tweet)
Hash Generator (toot or tweet)
HMAC Checker (toot or tweet)
MD5 Hash Generator (toot or tweet)
Password Generator (Arantius.com) (toot or tweet)
Password Generator (Frontend Dogma) (toot or tweet)
Password Generator (Gibson Research Corporation) (toot or tweet)
Password Security Checker (toot or tweet)
Password Security Checker and Generator (toot or tweet)
Security Leak Victim Checker (Hasso Plattner Institute) (toot or tweet)
Security Leak Victim Checker (Have I Been Pwned) (toot or tweet)
SHA-512 Hash Generator (toot or tweet)
SPF Record Generator (toot or tweet)
SSL Client Checker (toot or tweet)
Subresource Integrity Hash Generator (toot or tweet)
User Identity Generator (toot or tweet)

SEO/SEM

Conversion Rate Calculator (toot or tweet)
Domain and Social Media Name Checker (toot or tweet)
Domain Search Assistant (toot or tweet)
Dynamic-to-Static URL Transformer (toot or tweet)
Google Ads Calculator (toot or tweet)
Google Ads Keyword Tool (toot or tweet)
Keyword Generator (toot or tweet)
Keyword Typo Generator (toot or tweet)
Search Query Links Generator (toot or tweet)
Sitemap Generator (toot or tweet)
Social Media and Domain Name Checker (KnowEm) (toot or tweet)
Social Media and Domain Name Checker (namecheckr.com) (toot or tweet)
Social Share Links Generator (toot or tweet)
Website SEO Comparer (toot or tweet)

Typography

Fluid Type Scale Generator (toot or tweet)
Font Capability Checker (toot or tweet)
Font Comparer (toot or tweet)
Font Determiner (toot or tweet)
Font Family Support Checker (toot or tweet)
Font Pairing Tester (toot or tweet)
Font Style Matcher (toot or tweet)
Font Tester (toot or tweet)
Golden Ratio Typography Calculator (toot or tweet)
Text Decoration Generator (toot or tweet)
Text Decoration Generators (toot or tweet)
Type Scale Generator (Jeremy Church) (toot or tweet)
Type Scale Generator (Tim Brown) (toot or tweet)
Web Font Generator (toot or tweet)

Uncategorized

Barcode Label Generator (toot or tweet)
Credit Card Number Checker (toot or tweet)
Design System ROI Calculator (toot or tweet)
Diagram Editor (toot or tweet)
EPUB Validator (toot or tweet)
GitHub First Pull Request Checker (toot or tweet)
Google Cloud Pricing Calculator (toot or tweet)
Google Lighthouse Report Comparer (toot or tweet)
Google Lighthouse Scoring Calculator (toot or tweet)
ISBN Checker and Formatter (toot or tweet)
List Comparer (toot or tweet)
Performance Budget Calculator (toot or tweet)
Phone Number Spellings Generator (toot or tweet)
Purchasing Power Parity Salary Converter (toot or tweet)
Retina Display Tester (toot or tweet)
Slow File Download Emulator (toot or tweet)
Temporary Email Address Generator (toot or tweet)
Twitter Shadow Ban Checker (toot or tweet)
URL List Cleaner (toot or tweet)
URL Shortener (Bitly) (toot or tweet)
URL Shortener (is.gd) (toot or tweet)
VAT Number Checker (toot or tweet)
Video Speed Adjuster (toot or tweet)
WebPageTest Report Frustration Calculator (toot or tweet)
Website Archiver (archive.today) (toot or tweet)
Website Archiver (Internet Archive) (toot or tweet)