Interlink

Interlink is a WordPress plugin for auditing internal links and managing suggested or rule-based linking. It is best suited to site owners who want to improve link coverage without handing over every change to automation. Its strongest case is the combination of local analysis, approval-first suggestions, and a free plan.

Overview

Interlink finds orphaned, under-linked, and well-linked posts, flags broken internal links, and recommends link counts. That makes it useful for bringing structure to older archives or large sites whose internal links have grown unevenly. The plugin does not create new copy: it links existing text and supports undo for inserted links, a meaningful safeguard for editors wary of automated content changes.

By default, analysis runs against the site's WordPress database without external requests or tracking. Optional AI relevance uses the user's own OpenAI or Google Gemini API key and sends post text and titles, along with candidate titles, to that provider. This is a clear trade-off: local analysis keeps data on the site, while AI adds an external data flow.

Key features

The audit breaks down total internal links, orphaned posts, under-linked posts, well-linked posts, and recommended link counts. Anchor-text diversity reporting, cornerstone-content prioritization, and an editor meta box showing link status give editors more context than a list of suggestions alone. Rank Math focus keywords can serve as preferred anchors.

Suggestions wait for user approval before changing content. For teams comfortable with more automation, rules can map keywords to URLs, optionally limit links to shared categories or tags, and run when a post is saved. These controls offer flexibility, but rule-based linking still calls for editorial oversight to avoid links that fit a keyword but not the reader's intent.

CSV export, weekly scheduled scans, role control, and settings import and export support ongoing maintenance. Optional integrations include OpenAI, Google Gemini, and Google Search Console. The plugin says it has no front-end footprint: assets load only on admin screens, and its link map is cached in a small table.

Pricing

Interlink's Free plan costs nothing. It is a WordPress plugin with no signup, and requires WordPress 5.5+ and PHP 7.4+. There is no paid tier to weigh against the free version in this offer, so it is an accessible starting point for a WordPress site that needs audits, suggestions, and optional automatic linking.

Interlink suits sites with 20 or more posts, old archives, low visibility, siloed content, or broken links that have not been audited. It does not fit sites outside WordPress, or teams seeking a hosted service rather than a self-hosted plugin.

Platforms

Interlink is for self-hosted WordPress sites. Installation is through the WordPress Plugins screen or by uploading the plugin to /wp-content/plugins/, followed by activation and a rescan. It requires WordPress 5.5 or higher and PHP 7.4 or higher, and is tested up to WordPress 7.1.2.

Who it's for

Choose Interlink if you manage a WordPress site with enough posts for orphan and under-linked content to become hard to spot manually, and you want to review proposed changes before they go live. Its local-by-default analysis is also a good fit when avoiding routine external requests matters. If you enable AI relevance, account for the fact that post text and titles are sent to the selected AI provider.

The WordPress listing provides a support forum, but currently reports no submitted reviews. That leaves less user feedback to consult when judging support experience.

Pros and cons

• Pros: Free to install with no signup, and the approval-first workflow keeps suggested edits under editorial control.
• Pros: Audits cover orphaned, under-linked, and broken links, while reporting and scheduled scans support repeat maintenance.
• Pros: Local analysis is the default, and the plugin keeps its assets off the public-facing site.
• Cons: It requires a self-hosted WordPress installation and the stated minimum WordPress and PHP versions.
• Cons: AI relevance sends post text and titles to OpenAI or Google Gemini when enabled, so it is not a purely local option in that mode.
• Cons: Automatic rules can add links on post save; sites that want every change reviewed should leave that behavior off and use suggestions instead.

Alternatives

For a broader comparison, see Internal Linking Tools.

• LinkBoss may suit readers who prefer a web platform and want a free-credit entry point: its free plan includes 50 credits on signup for one site, with no credit card required.
• Link Whisper is another self-hosted option; its free version offers manually inserted outbound link suggestions.
• Linkagent is worth considering for users who want an AGPL-3.0 self-hosted option with every feature ungated and can provide their own infrastructure.
• Linkbot offers a web-based free Starter plan for one website property and up to 1,000 URLs, with reports and diagnostics but no automated linking or ongoing sync.
• Uix Page Builder is a free self-hosted WordPress plugin alternative.
• Orbis Internal Link Assistant may suit buyers who prefer a one-time license, with plans for one site, five sites, or unlimited sites.
• LinkStorm is a paid web and extension option with a free trial, for readers considering a subscription instead.
• LinkVector is a paid web alternative for readers seeking a subscription-based tool.

Verdict

Interlink is a strong fit for WordPress site owners who want a no-cost way to find gaps in internal linking and add links without surrendering editorial control. Its local default, undo support, and optional automation cover a useful range of workflows. Look elsewhere if you need a hosted, non-WordPress tool, or avoid its AI features if sending post text to an external provider is unacceptable.