This is probably the hardest part. However, it is also the most important part. Some search engines use Meta Tags, but all search engines use keyword frequency in text to rank pages.
Some search engines rely mainly on keyword frequency in text to rank their pages.
Tips Try for around 200-300 words on the page. Try to keep your paragraphs natural. Don't mass all your keywords together. Try to scatter them throughout your text. Some SEs read alt tags.