Checks inside the editor
Open any post or page in the block editor, click the spell check icon in the toolbar, then Check spelling. Issues appear in the sidebar with Suggest, Ignore and Add to dictionary.
Free WordPress plugin for spell checking in the block editor
WordPress spell checker plugin: check spelling before you publish
Site Spell Checker adds a spelling panel to the WordPress block editor. Click Check spelling to review your post title and content against an English (US) dictionary. The check runs in your browser, so your content never leaves it.
Free plugin · No account · No API key · No tracking
Fewer false alarms
Contractions and possessives (don't, it's, O'Brien, Sarah's) work with straight or curly apostrophes. Accented words like café and naïve are accepted. Numbers, links, email addresses, code blocks and ALL-CAPS acronyms are skipped.
Names stay quiet
Capitalized words in the middle of a sentence are treated as names and skipped. You can turn this off in settings.
Your own dictionary
Add product names and jargon once with Add to dictionary, or edit the list under Settings → Site Spell Checker. Use Ignore to hide a word for the current editing session only.
Free plugin vs. full-site scan
The plugin checks the post you're editing. The site scan checks everything already published. They're separate products, and the plugin works fully without the scan.
| Category | WordPress plugin (free) | Full-site scan ($99, paid once) |
|---|---|---|
| What it checks | The post or page open in the block editor: title and content. | Your public website, crawled page by page. |
| When | Before you publish. | After you publish, including old posts and pages. |
| Where it runs | In your browser. Content is never sent to any server. | On sitespellchecker.com, against your live public pages. |
| Account | None. | Email for checkout and report delivery. |
| Output | Sidebar list with Suggest, Ignore, Add to dictionary. | A report of issues across your site. |
| Price | Free. | $99 one-time, no subscription. |
| Get it | Install from WordPress.org | Start a $99 site scan |
How to install
- 1 In your WordPress admin, go to Plugins → Add New, search for "Site Spell Checker", then click Install and Activate.
- 2 Open any post or page in the block editor.
- 3 Click the spell check icon in the top toolbar (or Options → Site Spell Checker), then click Check spelling.
- 4 Optional: go to Settings → Site Spell Checker to edit your site dictionary and preferences.
Requires WordPress 6.0+ and PHP 7.4+. Block editor only, English (US) only in version 1.0.
Get it on WordPress.orgPrivate by design
Spell checking runs in JavaScript in your browser. The plugin makes no external HTTP requests, has no analytics or telemetry, and never sends your content anywhere, including to us.
It only loads the plugin's own dictionary files from your site. When an administrator uses Add to dictionary, it saves the word through the WordPress REST API on your own site.
The plugin includes one optional link, Scan every page of your site. If you click it, sitespellchecker.com opens with your site's domain and attribution parameters in the URL. No post content is included, and nothing is sent unless you click.
For bloggers, editors and agencies who write in the block editor and want a final spelling pass before hitting Publish, without pasting drafts into a third-party tool.
Frequently Asked Questions
Is the WordPress plugin free?
Yes. Every plugin feature is free. The full-site scan at sitespellchecker.com is a separate, optional $99 one-time service.
Does the plugin send my content anywhere?
No. Checking happens entirely in your browser. The plugin makes no requests to sitespellchecker.com or any other third-party service, and has no analytics or telemetry.
How is the plugin different from the Site Spell Checker website scan?
The plugin checks one post at a time while you edit, before publishing. The website scan crawls your public site and reports issues across every page it finds, including old content. Use the plugin for new posts and the scan to clean up what's already live.
Which languages are supported?
English (US) only in version 1.0.
Does it work with the Classic Editor or page builders?
Not yet. Version 1.0 supports the block editor only.
Why aren't names flagged?
Capitalized words in the middle of a sentence are usually names, so they're skipped by default. Capitalized words at the start of a sentence are still checked. You can change this under Settings → Site Spell Checker.
Who can add words to the site dictionary?
Administrators (users with the manage_options capability). Other users can click Ignore to hide a word for their current editing session.
What happens when I uninstall?
Deleting the plugin removes all of its settings, including the site dictionary.
Is there a Chrome extension too?
Yes. To check any live page in Chrome, see the Chrome extension.
Catch typos before they go live.
Install the free plugin for every new post. When you want to check everything you've already published, run one full-site scan.