I am doing the On-page SEO for a website that's never had any SEO done before. I will start with the Pages. Is it necessary to do SEO/Keywords for older Posts?

[Joseph.Lusso]

Using the On-Page Grader to perform SEO on pages of WordPress website. This website never had any SEO done before. Should I go back and perform the same work on the Post Pages?

[evolvingSEO]

I pretty much agree with the comments here. What this is basically called is a "content audit" - a process by which you go through old existing content, pull together data and assigned actions to each piece of content.

Here are some guides on how to preform a content audit;

• http://www.quicksprout.com/2014/04/24/how-to-conduct-a-content-audit-on-your-site/
• http://moz.com/blog/content-audit-tutorial
• https://www.distilled.net/blog/seo/how-to-perform-a-content-audit/

The end goal is to determine which content you might;

• Remove
• Update
• Noindex
• Conslidate
• Repurpose
• ...etc

Then you can assign keywords to the content you have left. But I would do the content audit first then assign keywords, because otherwise you'd be assigning keywords to content you might not even keep

[JVRudnick]

As Benjamin just above said...if you can "update" that content by adding fresh links or latest thinking or 5 new items to consider....then re-publishing same....it does revitalize the content, gets it reindexed again and hopefully new traffic to boot!

[BenjaminMorel]

If that content could be made to rank for terms that could bring in new visitors then definitely - it would be a wasted opportunity otherwise. This is especially true for evergreen content that will be useful to potential customers or clients for years to come.

[KempRugeLawGroup]

Yes, you should. Some of the best bloggers I've read/heard of, spend significant time going back to their older posts. They check for broken links, better phrasing, better keywords and implementation, etc. Plus, some of your older posts could may be "evergreen" i.e. not time sensitive, so - if they are quality - give them their best shot to rank, be read and improve your site overall.

Best,

Ruben