Interlink audits how your posts link to each other, finds orphan posts (published content with zero internal links pointing to it, invisible to search engines and to readers), and suggests relevant internal links you can add with one click.

The catch that sets it apart: it is 100% self-contained and non-destructive. It reads only your own WordPress database, with no crawling, no external APIs and no tracking, and it only ever turns text that already exists in a post into a link. It never writes new sentences, never rewrites your content, and every suggestion is shown for your approval before anything changes. Undo any insertion at any time.

Why internal linking matters

Internal links do two jobs at once. They help search engines discover and understand how your content fits together, and they keep readers moving through your site instead of bouncing back to the results page. Orphaned posts are the biggest and most common gap on any site past about fifty posts, and they are almost impossible to spot by hand, because nothing on the page tells you a post is orphaned. You have to check every post against every other post, which is exactly the kind of job a plugin should do.

A practical internal linking strategy

The workflow this plugin is built around is simple and repeatable. Run the audit to see where you stand. Fix the orphans first, because a post with no inbound links is the cheapest win available. Then work down the under-linked list. Mark your most important pages as cornerstone content so future suggestions favour them. Keep an eye on the anchor-text diversity report so your links read naturally rather than looking optimized. Re-run it monthly, or let the scheduled weekly scan do it for you.

Automatic internal linking, on your terms

Auto-link rules map a keyword to a URL and link existing occurrences across your site, with optional silo mode so links only form within a shared category or tag, and optional auto-apply whenever a post is saved. Everywhere else, suggestions are approve-first. You get automation where automation is safe and a review step where it is not.

What it does

Internal link audit. Total internal links, orphans, under-linked and well-linked posts, and a per-post status list with recommended link counts.
Orphan finder. Lists every published post with no inbound internal links, and helps you fix each one.
Smart suggestions. For any post, finds topically related posts by focus keyword, title and shared categories or tags, where an existing phrase can naturally become a link.
One-click insert, approve first. Wraps an existing phrase in a link to the target. Edit the anchor first if you like. Bulk-insert several at once.
Undo. Every inserted link is logged and can be reverted to plain text in one click.
Broken internal-link checker. Finds links pointing to missing, trashed or unpublished posts. Archives are never falsely flagged.
Auto-link rules with optional silo mode and optional auto-apply on save.
Anchor-text diversity report that flags over-used anchor text so you do not look over-optimized.
Cornerstone content. Mark key posts so suggestions prioritize linking to them.
Editor meta box. See a post’s links in and out, and its status, right in the editor.
CSV export, weekly scheduled scan, role control, and import/export of settings.
Optional AI relevance (bring your own OpenAI or Gemini key) and optional Google Search Console (your own Google app). Both are off by default and the plugin is fully self-contained without them.

Works great with Rank Math

If a post has a Rank Math focus keyword, that keyword is used as the preferred anchor. No SEO plugin is required, and it falls back to the post title.

Built by ReadyGo Tools

Made by ReadyGo Tools. If you would rather have internal linking optimized automatically across your whole site as you publish, ReadyGo Tools offers a managed SEO service, but this plugin is free, complete, and has no upsell nag.

External services

By default this plugin makes no external requests — all analysis runs locally against your own WordPress database, with no tracking.

One optional, off-by-default feature connects to a third-party service only if you enable it and supply your own credentials:

AI relevance (optional). If you enable it and enter your own OpenAI or Google Gemini API key, the plugin sends the current post’s title and text plus candidate post titles to that provider to rank internal-link suggestions. Requests go directly from your site to the provider you chose, authenticated with your key, and only when you turn it on.
- OpenAI — https://api.openai.com — Terms: https://openai.com/policies/terms-of-use — Privacy: https://openai.com/policies/privacy-policy
- Google Gemini — https://generativelanguage.googleapis.com — Terms: https://ai.google.dev/gemini-api/terms — Privacy: https://policies.google.com/privacy

If you never enable these options, the plugin remains fully self-contained.

Interlink – Internal Links Manager, Orphan Page Finder & SEO Link Suggestions