Useful Links

Date 2020-06-18 Modified 2021-08-04
By Kappa Category resources

Estimated Read Time: 9 min read
Ninja Level:

Curated list of useful links, tools and resources for Web development and DNS

You can also view it in my website. It is another way for presenting the information.

Cloud Computing and Cloud-native

Cloud service providers
- AWS
  - AWS Service Health Dashboard
  - Personal Health Dashboard
- Azure
  - Azure Status Dashboard, Primary
  - Azure Status Dashboard, Secondary
- GCP
  - Google Cloud Status Dashboard
- Cloudflare
  - Cloudflare System Status
- IBM Cloud
  - IBM Cloud Status Dashboard
- Oracle Cloud
  - OCI Status Dashboard
- Akamai
  - Akamai System Status
CI/CD
- CI/CD Service providers
Service Mesh
- Comparison of service meshes by InnoQ

Web development

Website performance, SEO and security (online tools)
- WebPageTest - Their waterfall graph and connection graph is useful for optimizing your loading speed
- Techinical SEO - This site has several tools for SEO
- Freeformatter - This site has formatters, validators, encoders, decoders minifiers and converters
- KeyCDN - Several tools provided, website speed test and other network tools
- Uptrends - Website, CDN speed test and other tools
- Pingdom - Website speed test
- Scanning
  - Dareboost - Provides recommendation
  - Nibbler - Provides recommendation, free version only scan maximum of five links automatically from your website
  - Lighthouse Metrics - Website that performs Google Lighthouse checking in browser
  - Google Pagespeed Insights
  - Mobile friendly checking by Google
  - A project using Server-Daten Scan and check a LOT of things including HTTPS, cookies, CSP, DNS, port checking and etc. It would took minutes. Use with caution
  - HTTP/3
    - HTTP3check.net by LiteSpeed Tech - Check if a website support HTTP/3
    - Check if your browser support HTTP/3 - By Cloudflare
  - Cloudflare
    - Check your browser connection to Cloudflare - Display your IP, WARP status and etc.
  - Security focused
    - Mozilla Observatory - Combines several third party scanning tools and display it. Recommended
    - Immuniweb Community Free Security Tests - Free web/domain/SSL scan
    - Sucuri - Free website security check & malware scanner
    - Website and E-mail scanning - Initative of the Internet Community and the Dutch government
    - Check if your browser has enabled GPC (Global Privacy Control)
    - Check if your Chrome browser is FLOCED
  - Scanning HTTP headers and CSP
    - Webbkoll - Checking CSP with detail explanation about GDPR and settings. Also support self-hosting. Recommended
    - Security Headers Sponsored by Report URI
    - Analyse CSP by report-uri
    - CSP Evaluator by Google
    - Redbot
    - Gift of Speed - Display a list about the maximum cache age of the webpage, also have other tools in that website
    - Test CORS - You should open browser developer tools when testing against an URL for CORS
  - Cookies
    - Webcookies (site is down) - Scan what cookies are used and give recommendation
  - Find out what technologies are used in a website
    - Builtwith
    - W3techs
JSON-LD
- Verification
  - Visualisation of strucuted data by Classy Schema - Recommended
  - Rich Results Test with Rich Snippet Preview - Recommended, by Google
  - Schema Validator - Replaced an old Google online tool
  - Structured Data Linter - HTTPS of this website does not work correctly, browser giving out warning about hostname problem
- Generator
Robots.txt
- Validator
Monitoring and Reporting
- Security and Error reporting
  - Sentry - Have free plan suitable for dev or small website. Also support self hosting but not reselling it (BSL license)
  - Report-URI - Have free plan suitable for dev or small website
Page preview
- Metatags.io - Preview how a webpage look like in Google Search, Facebook, Twitter, Linkedin, Pinterest and Slack
Google, some tools are usable but not displayed in the search console by default
PWA
- PWABuilder
HTML
- Validator
  - W3C Markup Validation Service - An online tool
  - html5validator, written in Python - Command line tool
  - CSS Validator - An online tool
- Can I Use - Browser support table for modern web technologies
Front-end playground for testing code or demo
CDN
- jsDelivr
- cdnjs
- Skypack
- unpkg
- ESM.sh
Web PKI
- Certificate Transparency
  - Check CT database By Google - Online tool
  - Censys.io - Online tool for checking hostname or certificates history
  - Online utility to check if the web server is returning correct certificate chains - By DigiCert
- Check the TLS settings supported by your browser by SSLLabs
JavaScript
- Browser support matrix of ES6+

DNS

Online tools
- Check DNS records from a specific DNS
  - Network-tools.com
- Troubleshooting DNSSEC
  - DNSSEC Analyzer by Versign Labs
  - DNSViz
- WHOIS
  - ICANN Whois
  - Versign Whois - Cloudflare said ICANN is cached and may have delay, and Versign should be used instead. But this Whois server does not support all TLDs
Flushing public DNS cache of some vendors
- Cloudflare
- Google