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https://caltech.edu

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
1
PASS
5
INFO
1

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

Checks
7
5 PASS 1 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://caltech.edu 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

A+
Meta Tags
Title optimized
PASS
Title optimized
Info::
Page title is set
Got: Home - www.caltech.edu
Info::
Title length (41 chars) is optimal
Info::
Title and H1 are well-aligned
Title

"Home\n \n\n - \n \n www.caltech.edu"

41 characters Optimal ✓
Title: Home - www.caltech.edu
H1: Caltech Homepage
Match: Very different
Robots: Indexable (no restrictions)
A
Content Depth
2576 words, Very Difficult
PASS
2576 words, Very Difficult
Info::
Page has 2576 words — good depth for search engines
Info::
Text-to-HTML ratio is 3%
Very low ratio suggests heavy framework overhead or boilerplate.
Info::
Reading level: Very Difficult (grade 36)
2576 words

Good depth

Reading level

Very Easy
Easy
Fairly Easy
Standard
Fairly Difficult
Difficult
Very Difficult

Grade 36

Text-to-HTML Ratio

3% text 97% HTML

19 KB / 703 KB

Very low ratio suggests heavy framework overhead or boilerplate.

Why this matters

Informational: ratio of visible text bytes to total HTML bytes. Very low ratios suggest excessive markup overhead.

A+
Image SEO
306 images, 302 descriptive filenames
PASS
306 images, 302 descriptive filenames
Info::
4 image(s) have hash/generic filenames
Info::
1 image(s) missing alt text — see Accessibility tab
302 descriptive
0 hash-based
4 generic
306 total
FilenameQualityAltIssues
menu-burger.pngdescriptive✗1
671798385_18582177727012321_6958694230070571302_n.jpggeneric✓1
Current: 671798385_18582177727012321_6958694230070571302_n.jpg
Suggested: t5182787-15.jpg
670311347_4253466034928050_6186471018531983105_n.jpggeneric✓1
Current: 670311347_4253466034928050_6186471018531983105_n.jpg
Suggested: t5171878-15.jpg
670531793_930498332928159_2921530582295621214_n.jpggeneric✓1
Current: 670531793_930498332928159_2921530582295621214_n.jpg
Suggested: t5171878-15.jpg
663139650_18579652564012321_3731338702900238848_n.jpggeneric✓1
Current: 663139650_18579652564012321_3731338702900238848_n.jpg
Suggested: t5182787-15.jpg

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.

Missing schema opportunities

  • moderate

    Event

    Page mentions an event (time element or event markup) that could be marked up as Event

    Events appear in dedicated event search and Google Events

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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