Checklist before a SEO site is published
- Titles (content and lenght)
- Descriptions (content and lenght)
- H1
- H2, H3...
- Link anchor and title
- Image alt
- Image size and weight
- 404 and 500 page
- Compress HTML
- Rich Snippets
- Logo (Content and link)
- Favicon
- elements order: charset, viewport, title, description, Google Analytics script, css, others
- URL name
- URL size
- URLs without ending
/
- Unique urls
- Absolute URLs
- Sitemap
- Follow/Nofollow links
- Image url
- Minimize and merge JS files
- Minimize and merge CSS files
- Fonts should be loaded after the CSS in a separate file
- Use a CDN for statics
- robots.txt
- Google Analytics
- Web master tools
- All links must return a 200
- Check PageSpeed https://developers.google.com/speed/pagespeed/insights/
- HTTPS
- non-www or www
- Uptime monitor
- Backend errors tracker
- Redirects from old site to new site