Online tools for Web
Analysis tools
Page analysis
- Website Speed Test & Analysis by
Pingdom
- Mobile-Friendly Test by
oogle
Web service checkup
- SSL Server Test by
Qualys SSL Labs
- Analyse HTTP response headers by
ReportURI
- SPF Online Check by
MXToolbox
- MX Lookup Tool by
MX Toolbox®
- DNS test and reports by
intoDNS
- DNS & Privacy Test by
Tenta
- DNS Speed Test by
UltraTools
Query information
- NSLOOKUP by
KLOTH.NET
- Look up WHOIS by
Whois.com
- WHOIS IP Lookup by NEUSTAR /
Ultratools
- MAC Address lookup by
MA:CV:en:do:rs
Web based applets
IFTTT
CloudConvert
CloudConvert — Convert file formats
TinyPNG
TinyPNG — Compress PNG or JPG files
QR Code Tools
QRCode Monkey — Generating QR Code
QR Code Generator — QRCode Stuff
QR Code Generator — from the ZXing Project
Bulk Resize Photos
Bulk Resize Photos — Resize multiple images
Generate EAN13 code online
EAN13 code — Online API for EAN13 Code
https://bwipjs-api.metafloor.com/?bcid=ean13&text=5901234123457
URL character Encode/Decode
URL Encode-Decode — %EC%9C%A0%EC%95%8C%EC%97%98
Symbols & Fancy Text
Symbols & Fancy Text — 𝓐 𝓑 𝓒 𝓓 𝓔 𝔸 𝔹
Page code tools
JSFiddle
- JSFiddle Online Editor — supports HTML, JavaScript and CSS in one page.
Stack Overflow
- Stack Overflow — Where Developers Learn, Share, & Build Careers.
JavaScript Subreddit
- JavaScript Subreddit — All about the JavaScript programming language.
- Mapping Values from One Range to Another by /u/driss_douiri (2025/07/10 14:55)
- What's the Most Popular Tech Stack in the Past Two Years? (Global Survey) by /u/Crafty_Impression_37 (2025/07/10 13:39)
- OpenAudit – A pluggable auditing library for Node.js with PostgreSQL, MySQL, MongoDB, SQLite, and more by /u/Legitimate-Health-19 (2025/07/10 12:09)
- [AskJS] Should I abandon JS as project scope increases? by /u/LingonberryThese2440 (2025/07/09 20:54)
- Hosting JS1024: a JavaScript code golf competition where entries must be 1024 bytes or less by /u/xorture (2025/07/09 13:04)
ES6 Compatibility
- ES6 compatibility table — Compatibility matrix for JavaScript
Beautifier
- Don's Tools – HTML, CSS, JavaScript and PHP
- JS BEAUTIFIER – JavaScript files
- NGINX BEAUTIFIER – Nginx Configuration file
Web design tools
Color palette generator
- Coolors.co — Generate color palettes
- ColourLOVERS — Color Trends + Palettes
- HTML Color codes — Color code picker from image
- BrandColors — Find brands' color code
Favicon
General favicon code for
<link rel="apple-touch-icon" sizes="180x180" href="favicons/apple-touch-icon.png"> <link rel="icon" type="image/png" sizes="32x32" href="favicons/favicon-32x32.png"> <link rel="icon" type="image/png" sizes="16x16" href="favicons/favicon-16x16.png"> <link rel="manifest" href="favicons/site.webmanifest"> <link rel="mask-icon" href="favicons/safari-pinned-tab.svg" color="#5bbad5"> <link rel="shortcut icon" href="favicons/favicon.ico"> <meta name="msapplication-TileColor" content="#da532c"> <meta name="msapplication-config" content="favicons/browserconfig.xml"> <meta name="theme-color" content="#ffffff">
Open Graph
Sharing button for Social
- Generate sharing button with Font Awesome
Text generator with fonts
- Font Meme – Signature maker and so on