Keywords Tools
Free keyword tools to research keywords, find related terms, check Google ranking position, SERP results and keyword density. Boost your SEO.
Free Keyword Tools – Research, Rank & Density
Keyword tools show what people search for, where your pages rank and how naturally you use keywords in your content.
All 6 Free Keyword Tools
- SERP Checker – Check search engine result pages (SERPs) for any keyword and see which websites rank on top.
- Keyword Position Checker – Find the Google ranking position of your website for any keyword.
- Keyword Density Checker – Check keyword density and the most-used words and phrases on any page or text.
- Related Keywords Finder – Find related keywords and long-tail phrases for any topic.
- Keyword Research Tool – Discover keyword ideas for SEO and content marketing.
- Keyword Rich Domain Finder – Find keyword-rich domain name ideas for your niche.
How to Use These Tools
- Enter your keyword, and your domain if the tool asks for it.
- Choose the country or other options if available.
- Click the check button.
- Analyse the results and use them in your content plan.
Quick Reference
| Search intent | Example query | Best content |
|---|---|---|
| Informational | what is a pdf | Guide or blog post |
| Navigational | pdfseotools merge pdf | Tool or brand page |
| Commercial | best free pdf tools | Comparison / list |
| Transactional | compress pdf online | Tool page |
Why Use Our Keyword Tools?
- Keyword insights: Find data that helps you choose better keywords.
- Fast research: Get results in seconds.
- Free: Use the tool without a paid SEO subscription.
- Beginner friendly: Clear results that are easy to act on.
- Content planning: Turn data into blog titles, headings and pages.
- Works anywhere: Use it on mobile or desktop.
Tips
- Target long-tail keywords for faster rankings on new websites.
- Match search intent – informational, commercial or transactional.
- Use the keyword naturally; avoid keyword stuffing.
- Track results monthly to see progress.
Worked Example
Example: 'pdf' is too broad for a new site, but 'compress pdf to 100kb for online form' is specific, matches a clear need and has less competition. A focused guide plus a link to the PDF Compressor answers that search perfectly.
Glossary
- Keyword
- A word or phrase people type into a search engine.
- Long-tail keyword
- A longer, more specific phrase that is usually easier to rank for.
- Search intent
- The goal behind a search: learn, find, compare or buy.
- SERP
- Search Engine Results Page.
- Keyword density
- How often a keyword appears compared with the total word count.
Helpful Guides
- How to Do Keyword Research for Free (Beginner Guide)
- How to Check Your Keyword Ranking Position on Google
- Keyword Density Explained: How Much Is Too Much?
Frequently Asked Questions
Are these keyword tools free?
Yes. Every tool in this category is free to use on pdfseotools.com with no sign-up.
Do the tools work on mobile?
Yes. They work in any modern browser on Android, iPhone, Windows and Mac.
Is my data safe?
Yes. Connections use HTTPS and uploaded files are removed after processing.