What about wordpress plugin? Like all in one seo..

That's another on page optimizer.

But there lot of ways how you optimize your website.

Let see about that later on from this post.

Yes All in one is the best onpage optimizer and also use paid version .

If you are talking about blogs, as mentioned the All In One SEO plugin would do the job for you but while working on normal types of sites like HTML and CSS made ones, try doing the things manually and with care. In most cases the most significant thing you can do would be adding proper title tags to your pages.

Hey,

Personally, I USE:

1) Add metatags
2) All In One SEO
3) And an on page optimization plugin

They´re all 3 important, but the pluging made the biggest positive difference for me so far!