Indexability
Detect a new noindex directive, X-Robots-Tag change, or site-wide wildcard robots block.
Free SEO change checker / no signup
See exactly which SEO fields changed on a page.
Scan a public page now, then scan the same URL again later. RankLatch compares stable SEO fields—not pixels or every line of source—and shows the previous value, current value, severity, and next action.
✓ Exact before / after✓ Browser-local snapshot✓ No page HTML saved
2 scansone page over time
Exactprevious and current values
10browser-local snapshots
$0no account or email
Search signals that can change while the page still looks normal.
A CMS setting, deployment, plugin, redirect rule, or routine edit can move a search-critical field without creating an obvious visual failure.
Canonical target
Compare the resolved canonical URL and catch removed, duplicate, or off-domain declarations.
Search snippet
Record exact title and meta-description text so approved copy is not lost silently.
Response path
See when a healthy URL becomes a redirect, error, unavailable response, or different destination.
Topic signals
Compare ordered H1 text and meaningful copy-volume movement without archiving HTML.
Result presentation
Track social-preview fields, schema-block count, newly missing alt attributes, and homepage favicon declarations.
Example change evidence
“The page changed” is not enough.
RankLatch identifies the protected field and preserves both values. Severity is rule-based: gaining noindex, losing a title, changing canonical domains, or becoming unavailable is treated differently from a minor metadata edit.
Review every comparison rule →FieldPrevious scanCurrent scan
Robotsindex, follownoindex, follow
Canonicalclient.example/serviceother.example/service
TitleApproved service title— removed —
Final response200 OK503 unavailable
How the free comparison works
One baseline. One later scan. No account.
The manual tool is deliberately transparent about storage and scope. Automatic monitoring is available only when you want RankLatch to return on its own.
Scan the page now
RankLatch extracts bounded public fields and saves the snapshot locally in this browser. Page HTML is not stored.
Return and scan it again
The prior snapshot is submitted with the same URL and compared using the production monitoring rules.
Review exact evidence
See every meaningful protected change, or confirm that the extracted fields still match the earlier state.
Manual comparison → daily protection
Stop returning to check once the page matters.
The free checker proves the comparison. RankLatch monitoring adds scheduled daily checks, approved baselines, email alerts, and evidence history. One site with up to 10 pages remains free after the full trial.
See free SEO monitoring →Straight answers
Before the first snapshot.
This is a focused temporal comparison of public SEO fields—not a ranking forecast, visual regression test, or hidden full-site crawl.
01What does the SEO change checker compare?+
It compares the same public page’s response status and redirect destination, indexability directives, site-wide robots block, canonical URL and declaration count, title, meta description, H1 text, meaningful copy-volume shifts, social-preview metadata, structured-data block count, newly missing image-alt attributes, and the homepage favicon declaration where applicable.
02What happens on the first scan?+
The first scan checks the page’s current public SEO signals and saves a bounded snapshot in this browser. Because no earlier snapshot exists, it cannot report a change yet. Scan the same page again later to create the comparison.
03Where is the previous scan stored?+
Up to ten extracted public-page snapshots are kept in local browser storage. RankLatch does not save the page HTML there. Clearing RankLatch site data in the browser removes those snapshots.
04Can I compare two different URLs?+
No. This checker deliberately compares the same requested page at two points in time. It rejects a previous snapshot captured for a different requested URL so unrelated pages cannot produce misleading change evidence. If the same requested URL begins redirecting somewhere new, that destination change is reported.
05Does the checker monitor the page automatically?+
No. The free checker compares only when you return and run it again. RankLatch monitoring checks approved pages daily, retains server-backed evidence history, and emails meaningful alerts without requiring the browser to return.
06Does it compare rankings or Search Console data?+
No. It compares observable page signals, not rankings, clicks, impressions, or Google’s index selection. Use Search Console and analytics alongside change evidence when investigating a traffic movement.
07Does it detect every visual or JavaScript change?+
No. RankLatch reads the bounded public server response and extracts stable SEO fields. It is not a screenshot diff, full DOM archive, JavaScript interaction recorder, or whole-site crawl.
08Will RankLatch change the website?+
No. The checker is read-only. It does not authenticate, install software, submit forms, or edit the submitted page.