Checkbot

Checkbot for Chrome crawls your website to check you’re following over 50 best practices that boost your SEO, speed and security. Test 1,000s of pages in minutes to uncover broken links, duplicate content issues, invalid HTML/CSS/JavaScript, insecure password forms, performance killing redirect chains and much more. Checkbot gives you all the tools you need to track down, understand and eliminate critical website issues.

See below for a list of best practices Checkbot can automatically test for and visit the Checkbot Web Guide (https://www.checkbot.io/guide/) for detailed descriptions of each.

SEO best practices:

• Use unique titles
• Use optimal length titles
• Set page descriptions
• Use unique descriptions
• Use optimal length descriptions
• Avoid thin content pages
• Avoid duplicate pages
• Set image ALT text
• Set mobile scaling
• Avoid plugins
• Use short URLs
• Avoid underscores in URLs
• Avoid URL extensions
• Avoid URL parameters
• Avoid symbols in URLs
• Use lowercase URLs
• Avoid deeply nested URLs
• Use valid HTML
• Use valid CSS
• Use valid JavaScript
• Return 404 for broken links
• Avoid broken internal links
• Avoid broken external links
• Avoid broken page resources
• Use robots.txt files
• Specify sitemap locations
• Avoid temporary redirects
• Avoid meta redirects

Web speed best practices:

• Use compression
• Avoid recompressing data
• Minify files
• Avoid inline source maps
• Enable caching
• Use long caching times
• Avoid duplicate resources
• Avoid inline CSS
• Avoid CSS @import
• Defer JavaScript loading
• Avoid inline JavaScript
• Avoid internal link redirects
• Avoid resource redirects
• Avoid redirect chains

Web security best practices:

• Use HTTPS
• Avoid mixed content
• Send passwords securely
• Use HSTS
• Use HSTS preload
• Disable content sniffing
• Specify MIME types
• Restrict iframe usage
• Use XSS protection
• Hide server version data