I've started looking into optimizing my website and would like to understand more about how on-page SEO works. What tools check how well a page is optimized and what should I pay attention to first?

Check out this on-page SEO checker at https://pr-cy.io/tools/content-analysis/ It’s super handy for figuring out what's going on with your website's SEO. It looks at stuff like your title tags, meta descriptions, and keyword density, helping you spot what needs fixing. Worth a try if you're looking to boost your site's performance!