Siteimprove
Turn your most complex website challenges into manageable tasks—all from a single platform
Solid choice
Siteimprove is a solid plugin choice in 2026, with a few things worth checking first. It runs on 800+ sites and was last updated 3 weeks ago, and scores 65/100 on our health check.
- Actively developed — last update 3 weeks ago
- Momentum — downloads up 60.6% vs the previous 30 days
- Small user base (800+ active installs)
- Very few reviews so far
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 Siteimprove stands todayWordPress.org search rankings
Live position in the plugin search, top 100| Keyword | Position |
|---|---|
| accessibility | >100 |
| analytics | >100 |
| insights | >100 |
| seo | >100 |
| spelling | #15 |
Version adoption
Share of active sites per release.
About Siteimprove
From the official readme · v2.1.4Description
The Siteimprove CMS Plugin bridges the gap between the WordPress content management system (CMS) and the Siteimprove Intelligence Platform. Now you can scan your website for errors as soon as a page is published, allowing you to fix mistakes, optimize content, and manage your site more efficiently.
The plugin also provides you access to Prepublish, an add-on which allows you to check your page for issues before it has been published.
Installation
There are two ways to install the Siteimprove plugin on WordPress.
To install the plugin via the listing page, type ‘Siteimprove’ in the search box on the WordPress plugin listing page and click on ‘install’.
OR
Upload the Siteimprove plugin zip file using WordPress’ ‘Upload Plugin’ feature. The plugin can be activated immediately after upload.
Configuration
After installing and activating the plugin, navigate to a piece of content in your WordPress configuration panel, i.e. “Pages”. While you are editing it, you should now see a Siteimprove icon on the right sidebar of the admin page.
Click on ‘Login’ and enter your Siteimprove username and password to access Siteimprove.
A new Siteimprove menu option will also appear on the left menu bar. Click on this menu option to continue configuring the plugin once you’ve logged in.
The token field is automatically filled and should not be changed unless a new token is required. In such cases, please click on “Request new token” to generate a new token.
Public URL is optional to fill in if, for any reason, your published pages are not on the same URL as your configuration panel.
Ignore Path Segments is optional and allows you to specify path segments that should be removed when building the public URL. This is useful when your admin panel has additional path segments that shouldn’t be included in the public URL (e.g., “wp-admin,staging”). Use comma-separated values.
When you download the plugin, you automatically will be using the latest experience. If for some reason, you want to use the previous experience of the Siteimprove plugin, uncheck “Use latest experience” in the configuration panel.
API Username (Email) and API Key are API credentials that should be filled in if you have purchased the ‘Prepublish’ add-on feature. When provided correctly, you should be able to begin utilizing Prepublish when you are previewing a page.
Click on ‘Save’ once you have filled out the relevant fields.
Usage
Once you have completed configuring the Siteimprove plugin and you are on a content page in the configuration panel, clicking on the Siteimprove icon in the right sidebar will open the Siteimprove plugin, which will provide you with the content’s current issues and the page’s current Digital Certainty Index (DCI) score.
You will also be able to review accessibility, content and policy issues on the page you are currently editing.
While editing a published page, the plugin provides you a page-level DCI score alongside an assessment of the readability and quality level of the page.
You can also evaluate what the impact of unpublishing the specific page may have on your overall DCI score and website quality.
Prepublish
If you have purchased the Prepublish add-on, you should see a Prepublish icon at the top of any page in preview mode.
Clicking on this button will trigger the Prepublish check, which provides live results of the accessibility and quality of the page.
Once the checks are complete, you will be able to see issues with the potentially unpublished content.
You can expand each area to review the issues that need to be fixed, make the necessary edits, and then rerun the Prepublish check to ensure that a page is optimized and issue-free before final publication by clicking on the Prepublish button again.
Frequently asked questions
Who can use this plugin?
The plugin requires a Siteimprove subscription to be used.
Where can I see the overlay?
The overlay is visible when editing a piece of content (e.g. “Pages” in WordPress configuration panel).
I don’t see the overlay, whats wrong?
Did you remember to turn off your adblocker? Some adblockers do not like our iframe overlay. Please review whether you have JavaScript turned off in your browser. We use JavaScript to be able to show you your issues.
Changelog
2.1.4
- Bugfix – Prepublish now reads the page from the WordPress domain rather than the configured Public URL, so the check works on setups where Public URL points at a separate delivery domain
- Bugfix – Prepublish now reports an error and clears the loading overlay when it cannot read the page, instead of waiting indefinitely
- Bugfix – Send the preview nonce when Prepublish is triggered from the overlay, so the checked page no longer contains the plugin’s own scripts
2.1.3
- Bugfix – Load the front-end overlay and Prepublish toolbar action for any user who can edit content (custom roles, multisite super admins), not just a fixed list of role names
2.1.2
- Updated – Siteimprove logo
2.1.1
- Bugfix – Ignore trailing slash in public url (prevents potential double slash when filtering first path parameter)
2.1.0
- Added – Ignore Path Segments setting to remove specific path segments when building public URLs
- Enhanced – Public URL functionality to handle complex URL transformations
2.0.8
- Updated – “Tested up to”
- Bugfix – Fixed overlay live view not showing on home page
- Bugfix – Fixed overlay not showing in editor pages
For developers
Is this your plugin? Show off the numbers.
Add a live badge to your site, docs or GitHub README. It updates on its own — no account needed.
Best Siteimprove alternatives
All accessibility plugins →
FAQ
Siteimprove: quick answers
Straight answers, pulled from live WordPress.org data.
Live data from WordPress.org · checked Oct 6, 2026
Is Siteimprove free?
Yes. Siteimprove is free to download and use from the official WordPress.org plugin directory.
Is Siteimprove safe to use in 2026?
Siteimprove is a solid plugin choice in 2026, with a few things worth checking first. It runs on 800+ sites and was last updated 3 weeks ago, and scores 65/100 on our health check.
How many websites use Siteimprove?
Siteimprove is active on 800+ WordPress websites and has been downloaded 109,590 times since it launched in March 2017. It was downloaded 1,726 times in the last 30 days.
Does Siteimprove work with WordPress 7.1?
Siteimprove is officially tested up to WordPress 7.0.6, while the latest release is 7.1.2. It may still work, but try it on a staging site first.
When was Siteimprove last updated?
The latest version, 2.1.4, was released on September 14, 2026 (3 weeks ago).
Who makes Siteimprove?
Siteimprove is developed and maintained by Siteimprove.
What are the best alternatives to Siteimprove?
The most popular alternatives to Siteimprove are Web Accessibility (formally… (500K+ installs), Auto Image Attributes From… (100K+ installs) and Accessibility by UserWay (80K+ installs).
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