Free Internal Link Checker vs Link Whisper
Link Whisper suggests internal links inline while you write in the WordPress editor, matched mostly by keyword and phrase, and can bulk-insert links across existing posts. It doesn't compute a PageRank-style authority score per page or model how authority flows across your whole site. RankForge is the structural layer: it crawls the site, scores every page's internal authority, and outputs the specific link to add — source, target, anchor, and placement — on any platform, not just WordPress.
If the job in front of you is internal link checker, you can run that check here for free in a couple of minutes with no account. Whether you also need Link Whisper depends on what else you do in a week — which is what the rest of this page is about.
What the free internal link checker checks
- The highest-impact source → target internal links you're missing
- Which strong pages could pass authority to under-linked pages
- How many contextual linking opportunities exist across the crawl
Where Link Whisper is genuinely better
These are real advantages. If any of them describe your week, Link Whisper is worth paying for and this free check is not a replacement.
- Suggests and inserts internal links directly inside the WordPress editor as you write
- One-click bulk link insertion across existing posts by keyword or phrase
- Built specifically for WordPress — no external crawl or account needed
Which one do you actually need?
Use the free internal link checker
You want authority-flow modeling and a prioritized, site-wide fix list that isn't tied to WordPress.
Use Link Whisper
You write in WordPress daily and want link suggestions inserted as you draft.
Link Whisper capabilities change — verify current features on their site.