Relevant Density Optimizer (RDO) – On-Page SEO Tool
Optimize your content's SEO by highlighting important terms and analyzing their density in your WordPress posts and pages.
Consider an alternative
Relevant Density Optimizer (RDO) shows warning signs in 2026 — compare the alternatives below before installing. Was last updated 1 year ago, and scores 30/100 on our health check.
- Small user base (<10 active installs)
- Very few reviews so far
- No update in over a year
- Only tested up to WordPress 6.8 (latest is 7.1)
How does it stack up?
Side-by-side on installs, updates, ratings & support
Daily downloads
Download spikes usually follow a new release — each site that auto-updates counts as a download.
Rankings
Where Relevant Density Optimizer… stands todayWordPress.org search rankings
Live position in the plugin search, top 100| Keyword | Position |
|---|---|
| content optimization | >100 |
| editor | >100 |
| gutenberg | >100 |
| keyword density | #30 |
| seo | >100 |
About Relevant Density Optimizer (RDO)
From the official readme · v1.8.0Description
Relevant Density Optimizer (RDO) is a powerful SEO tool that helps you optimize the density of important keywords, entities, and phrases in your content. By analyzing and highlighting term usage directly in the Gutenberg editor, RDO provides real-time insights to improve your on-page SEO.
Key Features
- Term Highlighting: Visually identify where your important terms appear in your content
- Density Analysis: Get real-time calculations of your terms’ density in both overall content and headings
- Term Organization: Sort terms alphabetically or by frequency of use
- Filtering Options: Filter to see only unused terms to identify optimization opportunities
- Search Functionality: Quickly find specific terms in your list
- One-Click Copy: Easily copy terms to paste elsewhere in your content
Why Relevant Term Density Matters
Relevant term density is an important aspect of on-page SEO. Too few mentions of key terms may result in poor rankings and indicate “fluff” which reduces overall text relevance.
How It Works
- Add your important terms in the RDO sidebar
- Toggle highlighting to see where terms appear in your content
- Review term density statistics for your overall content and headings
- Optimize your content based on the insights provided
- Save your terms for future editing sessions
Privacy Policy
Relevant Density Optimizer (RDO) does not collect any personal data from users or visitors. The plugin operates entirely within your WordPress installation and does not communicate with external services.
The terms you add and analyze with RDO are stored in your WordPress database as post meta data and are not shared with any third parties.
Installation
- Upload the
relevant-density-optimizerfolder to the/wp-content/plugins/directory - Activate the plugin through the ‘Plugins’ menu in WordPress
- Open any post or page in the Gutenberg editor
- Click the “Relevant Density Optimizer” icon in the top-right editor toolbar
- Enter your important terms and start optimizing!
Frequently asked questions
Where do I find the RDO panel in the editor?
After activating the plugin, open any post or page in the Gutenberg editor. Click on the “Relevant Density Optimizer” icon in the top-right toolbar (it looks like a line chart).
How do I add terms to track?
In the RDO sidebar, enter your terms in the “Relevant Terms” text area. You can separate terms using commas or by placing each term on a new line.
What is the ideal keyword density?
There’s no universal ideal density, but generally, your content should be as relevant as possible.
Can I save my terms for future editing?
Yes! Click the “Update Terms” button to save your terms. They will be available the next time you edit the post or page.
Does this plugin slow down my editor?
RDO is designed to be lightweight and efficient. The term highlighting feature uses debounced functions to ensure minimal impact on editor performance.
Changelog
This version includes performance improvements and fixes for highlight persistence when switching between blocks.
1.8.0
- Security improvements
- Enhanced Gutenberg editor detection
- Refactored a lot of code
1.7.3
- Fix namespace pollution
1.7.2
- Performance improvements for handling large numbers of terms
- Fixed highlight persistence when switching between blocks
- Enhanced accessibility support
1.7.1
- Added support for term highlighting in more block types
- Fixed issue with term counting in certain content structures
1.7.0
- Added heading density analysis
- Improved highlighting performance
- Added search functionality for terms
1.6.0
- Added term sorting options
- Improved UI for better usability
- Fixed highlighting in nested blocks
Screenshots
For developers
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FAQ
Relevant Density Optimizer (RDO): quick answers
Straight answers, pulled from live WordPress.org data.
Live data from WordPress.org · checked Oct 12, 2026
Is Relevant Density Optimizer (RDO) free?
Yes. Relevant Density Optimizer (RDO) is free to download and use from the official WordPress.org plugin directory.
Is Relevant Density Optimizer (RDO) safe to use in 2026?
Relevant Density Optimizer (RDO) shows warning signs in 2026 — compare the alternatives below before installing. Was last updated 1 year ago, and scores 30/100 on our health check.
How many websites use Relevant Density Optimizer (RDO)?
Relevant Density Optimizer (RDO) is active on <10 WordPress websites and has been downloaded 590 times since it launched in April 2025. It was downloaded 38 times in the last 30 days.
Does Relevant Density Optimizer (RDO) work with WordPress 7.1?
Relevant Density Optimizer (RDO) is officially tested up to WordPress 6.8.11, while the latest release is 7.1.3. It may still work, but try it on a staging site first.
What PHP version does Relevant Density Optimizer (RDO) need?
Relevant Density Optimizer (RDO) requires PHP 7.2 or higher. Most hosts run PHP 8.x today, so it works on any modern WordPress hosting.
When was Relevant Density Optimizer (RDO) last updated?
The latest version, 1.8.0, was released on April 17, 2025 (1 year ago).
Who makes Relevant Density Optimizer (RDO)?
Relevant Density Optimizer (RDO) is developed and maintained by Constantin Oesterling.
What are the best alternatives to Relevant Density Optimizer (RDO)?
The most popular alternatives to Relevant Density Optimizer (RDO) are LLMs.txt Generator (1K+ installs), Advanced LLMs.txt Generator (100+ installs) and RankJet AI-Powered SEO & Ra… (100+ installs).
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