1) Meta Title and Meta Description
The meta title should be concise, with an ideal length of 50 to 60 characters. This conciseness requires brands to be direct, choosing each word carefully to maximize impact. As for the meta description, this expands slightly, with 155 to 160 characters, to provide a captivating overview of the page's content.
2) Hierarchical Structure
Each page should have a single H1 tag, thus asserting the main subject in an unmistakable manner. H2 tags, without strict limits, should ideally be 2 to 4 in number, structuring the secondary content without overwhelming the user.
3) Loading Performance
Web performance has become an essential SEO criterion. With thresholds such as 2.5 seconds for the largest painted content and less than 1.8 seconds for the first painted content, sites must load quickly to maintain their rankings.
4) Visual Stability
A cumulative layout offset of less than 0.1 seconds is required to avoid disruption to the user experience. This proves that small distractions can have a big impact on the perception of a site.
5) Image Alt Text
With a 125 character limit for image alt text, sites must accurately describe their images while incorporating relevant keywords.
Key points :
- Meta Title: Length of 50 to 60 characters.
- Meta description: Length of 155 to 160 characters.
- Number of H1 tags: Only one.
- Number of H2 tags: No fixed limit, ideally between 2 and 4.
- Largest Contentful Paint: Less than 2.5 seconds.
- First Contentful Paint: Less than 1.8 seconds.
- Cumulative Layout Shift: Less than 0.1 seconds.
- Image alt text: Less than 125 characters.
