https://nasa.gov
SEO
· 7 checks — Canonical, meta, content depth, internal links, image SEO, and hreflang rolled into one auditable list.SCORE
93
GRADE
A
FIX
0
REVIEW
0
PASS
6
INFO
1
Cross-tab audit — SEO, performance, crawlability, mobile, structured data
Checks
76 PASS
A+Canonical URLProperly configuredPASS
Canonical URL
Properly configured
Properly configured
Info::
Canonical tag present
Got: https://www.nasa.gov/
Info::
Canonical is self-referencing
Info::
Canonical matches final URL after redirects
Info::
Canonical target returns 200
Info::
Canonical points to a different domain
Canonical URL Configured
Page URL https://nasa.gov Canonical https://www.nasa.gov/ Match Self-referencing (correct) Target 200 ✓
AMeta TagsTitle: 4 charsPASS
Meta Tags
Title: 4 chars
Title: 4 chars
Info::
Page title is set
Got: NASA
Warning::
Title is only 4 characters — consider expanding
Title
"NASA"
4 characters Too short
Robots: Indexable (no restrictions)
AContent Depth1589 words, Very DifficultPASS
Content Depth
1589 words, Very Difficult
1589 words, Very Difficult
Info::
Page has 1589 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)
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
10 KB / 340 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+Internal Links2 internal, 278 externalPASS
Internal Links
2 internal, 278 external
2 internal, 278 external
Info::
2 internal links (1%)
Info::
99% of links use descriptive anchor text
Info::
Page has 280 links — consider reducing
Info::
2 internal / 278 external links
Link Distribution
1% internal (2) 99% external (278)
Anchor Text Quality
277 Descriptive 1 Generic 2 Empty
Most Linked Internal Pages
| # | URL | Links |
|---|---|---|
| 1 | # | 2 |
Top External Domains
| Domain | Links |
|---|---|
| www.nasa.gov | 182 |
| science.nasa.gov | 79 |
| plus.nasa.gov | 7 |
| ciencia.nasa.gov | 4 |
| lp.constantcontactpages.com | 1 |
| www.facebook.com | 1 |
| x.com | 1 |
| oig.nasa.gov | 1 |
| www.instagram.com | 1 |
| www.youtube.com | 1 |
A+Image SEO76 images, 69 descriptive filenamesPASS
Image SEO
76 images, 69 descriptive filenames
76 images, 69 descriptive filenames
Info::
7 image(s) have hash/generic filenames
69 descriptive
0 hash-based
7 generic
76 total
| Filename | Quality | Alt | Issues |
|---|---|---|---|
| dsc-3710.jpg | generic | ✓ | 1 |
| dsc-3710.jpg | generic | ✓ | 1 |
| 55199636042-965f5225c4-o-1.jpg | generic | ✓ | 1 |
| 55199636042-965f5225c4-o-1.jpg | generic | ✓ | 1 |
| 53906743054-80f4972233-o.jpg | generic | ✓ | 1 |
| 15404646465-7920e6d9b7-o.jpg | generic | ✓ | 1 |
| p23-171-176.jpg | generic | ✓ | 1 |
See Accessibility tab for detailed alt text quality analysis.
A+Schema Markup AuditPer-type completeness vs Schema.org requirements + rich-result eligibilityPASS
Schema Markup Audit
Per-type completeness vs Schema.org requirements + rich-result eligibility
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.
Hreflang0 hreflang tagsINFO
Hreflang
0 hreflang tags
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.