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https://iarc.fr

SEO

· 7 checks — Canonical, meta, content depth, internal links, image SEO, and hreflang rolled into one auditable list.
SCORE
91
GRADE
A
FIX
0
REVIEW
2
PASS
4
INFO
1

Cross-tab audit — SEO, performance, crawlability, mobile, structured data

Checks
7
4 PASS 2 REVIEW
B
Canonical URL
Minor issues
REVIEW
Minor issues
Warning::
No canonical tag found
Search engines will determine the canonical URL themselves, which may cause duplicate content issues.
No Canonical URL Set
Page URL https://iarc.fr Canonical (not set)

Search engines will determine the canonical URL themselves, which may cause duplicate content issues.

Why this matters

Without a canonical, Google may treat each URL variant (with/without slash, with tracking params, http/https) as duplicate content and split ranking.

Learn more ▾

A canonical link tells Google which URL is the 'real' one when multiple URLs serve identical content. Without it, link equity gets split across variants and none of them rank as well as a single canonical version would. One <link rel="canonical"> tag in <head> covers it.

Source: Google Search Central

B
Content Depth
869 words, Very Difficult
REVIEW
869 words, Very Difficult
Info::
Page has 869 words of content
Info::
Reading level: Very Difficult (grade 15)
869 words

Good depth

Reading level

Very Easy
Easy
Fairly Easy
Standard
Fairly Difficult
Difficult
Very Difficult

Grade 15

Text-to-HTML Ratio

5% text 95% HTML

6 KB / 111 KB

A+
Meta Tags
Title optimized
PASS
Title optimized
Info::
Page title is set
Got: IARC – INTERNATIONAL AGENCY FOR RESEARCH ON CANCER
Info::
Title length (52 chars) is optimal
Title

"IARC – INTERNATIONAL AGENCY FOR RESEARCH ON CANCER"

52 characters Optimal ✓
Robots: Indexable (no restrictions)
A+
Image SEO
72 images, 47 descriptive filenames
PASS
72 images, 47 descriptive filenames
Info::
25 image(s) have hash/generic filenames
47 descriptive
0 hash-based
25 generic
72 total
FilenameQualityAltIssues
.generic✓1
.generic✓1
.generic✓1
.generic✓1
.generic✓1
.generic✓1
.generic✓1
.generic✓1
.generic✓1
.generic✓1
.generic✓1
.generic✓1
.generic✓1
.generic✓1
.generic✓1
.generic✓1
.generic✓1
.generic✓1
.generic✓1
.generic✓1
.generic✓1
.generic✓1
.generic✓1
.generic✓1
.generic✓1

See Accessibility tab for detailed alt text quality analysis.

A+
Schema Markup Audit
Per-type completeness vs Schema.org requirements + rich-result eligibility
PASS

No structured data detected

Without JSON-LD or microdata, this page can't qualify for any of Google's rich result formats. Even basic Organization or WebSite schema is a quick win.

Hreflang
0 hreflang tags
INFO
0 hreflang tags

No hreflang tags detected.

Hreflang tags are only needed for multilingual or multi-regional sites.

All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.

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