keyword

free books online pdf

Monthly search volume and cost-per-click data for "free books online pdf" in US.

$ curl "https://app.seodata.dev/v1/keyword?q=free+books+online+pdf&country=us" +--------------+------------------+ | volume | 8,100 | | cpc | $4.96 | | competition | 0.1 | | country | US | | updated | 2026-05-16 | +--------------+------------------+

# related keywords

Keywords with overlapping search results, ranked by SERP similarity.

keyword	volume	cpc	overlap
books pdf free	14,800	$4.7	20/20
book pdf free	12,100	$8.51	20/20
free books pdf	12,100	$7.61	20/20
free pdf book	12,100	$8.51	20/20
free pdf books	12,100	$7.61	20/20
pdf books free	12,100	$7.61	20/20
books download free pdf	8,100	$4.27	20/20
download pdf book free	8,100	$6.92	20/20
free book pdf download	8,100	$6.92	20/20
pdf books free download	8,100	$6.92	20/20

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=free+books+online+pdf&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