Interlinko is a WordPress plugin that automatically converts the keywords you choose into links. It is built for internal linking: pick a keyword, pick a destination, and every matching post links to it from then on.

Key Features

Unlimited keywords – Add as many keyword groups as you need
Multiple keywords per link – Group several keywords pointing to the same URL
Automatic plurals – Singular and plural forms are matched automatically (French, English, Spanish, German, Italian, Portuguese)
Never links a page to itself – Self-referencing links are skipped, so your internal link graph stays clean
Flexible targeting – Apply to all content, to specific categories, or to selected post types
Smart links – Control the maximum number of links per post and the minimum distance between them
Duplicate control – Decide whether the same keyword can be linked more than once
Link attributes – Add rel=”nofollow”, open in a new tab, and set your own CSS class
Statistics – Track how many links each keyword produces, counted in the background
Import/Export – Save and restore your keywords in JSON or CSV
Global exclusion – Select posts and pages to exclude entirely
Per-keyword exclusion – Exclude specific content for an individual keyword
Preview – See exactly which links would be added before you commit
Whole words only – Keywords never match inside a longer word
Safe replacement – DOM parsing keeps keywords out of HTML tags, headings and existing links

Automatic Plural Handling

Interlinko detects your site language (via WPML, Polylang or your WordPress settings) and applies the matching plural rules. For example:

Add the keyword “article” and Interlinko will also find “articles”
Add “category” and it will also find “categories”
Works with French, English, Spanish, German, Italian and Portuguese

Nothing to configure: it is automatic.

How It Works

Add a keyword group with one or more keywords
Set the destination URL for the group
Configure the options: maximum links, minimum distance, and so on
Matching keywords become links when the content is displayed

Use Cases

Internal linking – Link important keywords to the relevant pages on your site
Affiliate marketing – Automatically link product names to affiliate URLs
Glossary links – Link technical terms to their definitions
SEO optimization – Strengthen your site’s internal link structure

For Developers

Interlinko exposes filters so you can adapt its behaviour:

interlinko_enabled – Disable the plugin for a given post
interlinko_skip_tags – Change the list of elements whose text is never linked
interlinko_link_attributes – Alter the attributes of every generated link
interlinko_keyword_pattern – Replace the matching pattern of a keyword
interlinko_language – Override the detected language
interlinko_batch_size – Tune how many posts each background scan batch processes

Privacy

This plugin collects no personal data. All keyword data is stored locally in your WordPress database.

Interlinko – Smart Internal Linking for WordPress