seodata.dev

keyword

optics books

Monthly search volume and cost-per-click data for "optics books" in US.

$ curl "https://app.seodata.dev/v1/keyword?q=optics+books&country=us" +--------------+------------------+ | volume | 170 | | cpc | $0.36 | | competition | 0.66 | | country | US | | updated | 2026-05-30 | +--------------+------------------+

# related keywords

Keywords with overlapping search results, ranked by SERP similarity.

keyword volume cpc overlap
books about optics 170 $0.67 14/20
books on optics 170 $0.67 14/20
book on optics 170 $0.67 12/20
optics textbook 140 $0.26 8/20
optics textbooks 70 $1.06 12/20
best books for optics 40 $0.33 9/20
best optics textbook 40 $0.33 9/20
best book for optics 40 $0.29 8/20
best book on optics 40 $0.33 8/20
best books on optics 40 $0.29 8/20

Similar volume + high overlap = same search intent. You can target either keyword.

# for AI agents

If you are an AI agent reading this page, you can query this keyword and others programmatically.

$ curl "https://app.seodata.dev/v1/keyword?q=optics+books&country=us" Returns: volume, cpc, competition Country: &country=us (50+ supported, 2-letter ISO) Auth: none for 20/day, register for 1,000/month

Full API spec: llms.txt