Which is the strongest part of SEO, on-page or off-page optimization?

SEO (Search Engine Optimization) which simply means making the web page better for search engine ranking.

SEO is a practice to increase the ranking of a website in search engine result pages(SERPs).

Important factors for ranking are as follows:

1. On-page SEO: On-page SEO is a technique which results in optimizing the website that affects search engine rankings.

On-page SEO strategies include keyword research, title tag, meta description, heading tag, internal linking and external linking.

2. Off-page SEO: Off-page SEO is a technique which increases the domain authority (DA) through getting links from other websites.

Off-page SEO strategies include Guest posting, Bookmarking & Commenting.

1. On-page SEO looks at what your site is about
2. Off-page SEO looks at how authoritative and popular your site is

On-page SEO strategies include:

1. Keywords
2. Title Tags
3. Headings (H1)
4. Internal Linking
5. Page content
6. page load speed
7. Alt text for images
8. URL structure
9. External links
10. Responsiveness
11. XML sitemap
12. Website performance

Off-page SEO strategies include:

1. Guest blogging
2. Backlinks opportunities
3. Bookmarking
4. Commenting
5. Domain Authority
6. Social sharing

On-page SEO and Off-page SEO strategies work together to improve search engine rankings. Both the activities drive the same goal but in a different manner.