Interlink

Interlink is a free WordPress plugin for auditing a site's internal links and identifying posts that may need attention. Its reports cover total internal links, orphaned and under-linked posts, well-linked posts, and recommended link counts. The plugin suggests relevant destinations, but suggestions require approval before content changes. When it inserts a link, it uses existing text rather than adding a sentence, and the change can be undone. Optional auto-link rules map keywords to URLs, can be limited to shared categories or tags, and can run when a post is saved. Other tools include anchor-text diversity reporting, cornerstone-content prioritization, an editor status panel, CSV export, weekly scans, role controls, and settings import and export. Analysis runs locally against the WordPress database by default, without external requests or tracking. If AI relevance is enabled with the user's API key, post text and titles plus candidate titles are sent to OpenAI or Google Gemini. Interlink requires WordPress 5.5 or later and PHP 7.4 or later, and is tested up to WordPress 7.1.2.

Interlink offers link audits and controlled link insertion for WordPress sites. Its local-by-default analysis and approval-first workflow are useful to note, as are its software requirements and optional AI data flow.

Interlink may suit WordPress site owners reviewing large archives, orphaned content or broken internal links. The maker particularly highlights sites with 20 or more posts and older or siloed content.

Interlink is a WordPress plugin for auditing internal-link coverage and proposing links without changing content automatically. It fits site owners with substantial or aging archives who want editorial approval at every step. The main trade-off is that its strongest controls are tied to a self-hosted WordPress setup and optional AI use sends content outside the site.

Overview

Interlink maps a site's internal-link structure, locating orphaned posts, under-linked and well-linked posts, broken internal links, and recommended link counts. That makes it a practical cleanup tool for archives that have grown unevenly or have never received a systematic link review. Suggestions wait for user approval, so editors can reject unsuitable connections before anything changes.

When links are inserted, the plugin only converts existing text into links; it does not compose new sentences. Undo support provides a straightforward way to reverse inserted links. This non-destructive approach is better suited to publishers protecting established copy than to teams seeking unattended optimization.

Analysis runs locally against the WordPress database by default, with no external requests or tracking. AI relevance is optional, but enabling it with your own OpenAI or Google Gemini key sends post titles, post text, and candidate titles to that provider. Sites with strict data-boundary requirements can keep AI disabled; teams wanting that extra relevance signal must accept the additional transfer.

Key features

The audit distinguishes total internal links, orphaned posts, under-linked posts, well-linked posts, and recommended link counts, giving editors both coverage metrics and a queue of likely problems. Anchor-text diversity reporting helps expose repetitive anchors, while cornerstone-content prioritization directs attention to pages intended to carry more authority. An editor meta box displays links and their status in the editing workflow.

Auto-link rules map keywords to URLs and can be limited to pages sharing a category or tag. Rules may run when a post is saved, which is useful for consistent terminology but still operates within the plugin's existing-text, link-only behavior. Rank Math focus keywords can be used as preferred anchors. CSV export, weekly scheduled scans, role control, and settings import/export support recurring audits and handoffs between editors.

The plugin has no front-end footprint: assets load only on its administration screens, and the link map is cached in a small table. Installation is through the WordPress Plugins screen or by uploading the plugin to /wp-content/plugins/, followed by activation and a rescan.

Pricing

Free — free (billed Free; WordPress plugin; no signup; WordPress 5.5+; PHP 7.4+).

There is no paid tier, seat charge, quota, or renewal term attached to this plan. That makes Interlink an unusually low-friction choice for a single WordPress installation, while the requirements exclude older WordPress or PHP environments. Compatibility is tested up to WordPress 7.1.2.

Platforms

Interlink is a self-hosted WordPress plugin with a web-based administration interface. It requires WordPress 5.5 or newer and PHP 7.4 or newer. The WordPress listing provides a support forum and currently shows no submitted reviews.

Who it's for

Interlink is aimed at sites with at least 20 posts, long-running archives, low-visibility content, siloed topics, or un-audited broken links. It is a good fit for editors who want measurable link coverage, controlled auto-link rules, and approval before publication. It is less suitable for teams that do not run WordPress, cannot meet its server requirements, or require AI analysis without sending text to an external provider.

Pros and cons

Pros

• Local-first analysis: routine scans use the site's database without external requests or tracking.
• Editorial control: suggestions require approval, inserted links can be undone, and no new sentences are generated.
• Useful audit detail: orphan, under-linked, well-linked, broken-link, and recommended-count reporting supports a prioritized cleanup.
• Operational tools: scheduled scans, CSV export, role control, and settings transfer help maintain recurring workflows.
• Free access: the complete listed plan costs $0 and requires no signup.

Cons

• WordPress-only deployment: non-WordPress sites cannot use the plugin, and older server stacks fall outside its requirements.
• AI changes the data boundary: relevance processing sends titles and text to OpenAI or Google Gemini when enabled.
• Approval remains manual: cautious automation protects content but still requires editorial review before changes go live.
• Support signal is limited: the WordPress listing currently has no submitted reviews.

Alternatives

For a broader comparison, see the Internal Linking Tools list. Choose LinkBoss instead if you want a web service with a 50-credit free signup and paid monthly Launch plan. Relinka is the better alternative for a WordPress plugin with a free-forever tier and an optional $59-per-year Pro license. Pick Core+ Links for deterministic block-editor suggestions and review-first auto-linking on a permanently free tier.

InterLinks suits users wanting a web platform with a one-link demo and paid Professional plan. Internal Link Juicer is another self-hosted and web option with a free version and annual 1 Site License. Choose Link Whisper if its WordPress free install and paid Agency offering match your licensing needs. Linkagent is aimed at teams needing API, self-hosted, or web deployment, including an AGPL-3.0 self-hosted option. Linkbot is a web alternative whose free Starter plan emphasizes diagnostics rather than automated linking.

Verdict

Choose Interlink if you run a WordPress site with a meaningful archive and want a free, local-first audit with approval-controlled link insertion. Its combination of coverage reporting, reversible edits, and maintenance tools is the reason to pick it. Look elsewhere if you need a non-WordPress service, fully unattended changes, or AI relevance without sending page text to an outside provider.