According to a recent STATISTA global survey, on page factors, were ranked first amongst thousands of SEO professional.
https://www.statista.com/statistics/633151/effective-seo-tactics/

According to the survey, the most effective factors to optimize are metadata elements including Webpage Titles, Descriptions, Image ALT’s and Internal linking.
Optimizing webpage metadata, is traditionally done manually, by programmers, or skilled SEO operators. This manual work is very costly and time consuming! each webpage needs to be analysed manually, using multiple external analytic tools. The SEO specialist needs to manually write the metadata sentences, and decide, which keywords search terms should be included in each page content and metadata.
Then, each webpage content needs to be updated manually, with the most relevant and optimized metadata, usually using the website CMS (e.g. WordPress). Then, the results and performance of the SERP ranking needs to be analysed again, refined, and update the metadata again, and again, over time.
The solution…, Auto generate metadata, and optimize your webpage code automatically using NytroSEO!
www.NytroSEO.com