What technology does tetoru.net use?

tetoru.net is built with Ruby on Rails, Google Analytics.

Is tetoru.net secure (HTTPS)?

Yes. tetoru.net uses TLS 1.3 with a certificate issued by Amazon, valid until Jan 28, 2027.

What is tetoru.net's SEO score?

tetoru.net scored 55/100 for SEO in the latest analysis (fair).

What is tetoru.net's overall website score?

tetoru.net has an overall SiteGraph score of 72/100, combining SEO, performance, security, and accessibility.

tetoru.net

ログイン | tetoru

Last scanned Jul 26, 2026, 11:49 AM

Overall score

Fair

Summary

This website uses Google Analytics hosted on AWS. SEO is fair (55/100) and accessibility is fair (60/100). Security scores excellent (100/100) and performance good (75/100). Top issue: Missing meta description.

United States

Hosted on AWS

Top issues to fix

8 issues found · 3 high priority

Missing meta description
SEO
Add a ~150-character meta description to control your search-result snippet and lift click-through rate.
No H1 heading found
SEO
Add exactly one H1 describing the page's main topic — it anchors the document outline for search engines and screen readers.
Over half of images are missing alt text
Accessibility
Add alt attributes to images — screen readers depend on them, and they help image SEO.
Missing canonical link
SEO
Add <link rel="canonical"> so search engines know which URL variant to index.
No structured data (JSON-LD) found
SEO
Add JSON-LD (Organization, Article, Product…) to become eligible for rich results.
Missing OpenGraph tags
SEO
Add og:title/og:description/og:image so shared links render a proper preview card.

+2 more issues — details in the sections below.

SEO

6 issue(s) found

Performance

417 ms

100

Security

HTTPS & header checks

Accessibility

2 issue(s) found

Not enough scan history yet to show a trend — check back after this site has been re-scanned a few more times.

Contact

Email, phone, and address published on this site's own pages.

Email: b10aeb2f3b4bfef680f7e3a58c128665@o4506029519405056.ingest.sentry.io

Meta tags

Title: ログイン | tetoru
Description
Canonical
Language: ja
Charset: UTF-8
Viewport: width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0
Robots meta
Manifest

Technologies

Detected frameworks, languages, and tools.

Ruby on Rails Google Analytics

Hosting & CDN

Hosting provider: AWS
CDN provider: —
IP address: 3.33.153.45
ASN: AS16509 (AMAZON-02 - Amazon.com, Inc., US)

DNS records

Type	Value
A	3.33.153.45 15.197.135.98
AAAA	—
MX	mx.sendgrid.net
TXT	v=spf1 include:p0ip0zbzjy.powerspf.com -all google-site-verification=MoUgoaaMbAdBJGDIawUjNc_rdbUYFYfCPvCJNPSNYes
NS	ns-482.awsdns-60.com ns-1648.awsdns-14.co.uk ns-911.awsdns-49.net ns-1318.awsdns-36.org
CAA	—
CNAME	—
IPv6 support	No

TLS / SSL certificate

Version: TLS 1.3
Issuer: Amazon
Subject: tetoru.net
Valid from: Jul 15, 2026
Valid to: Jan 28, 2027
Days until expiry: 184
SAN domains: tetoru.net, *.tetoru.net

Security headers

Strict-Transport-SecurityEnabled
Content-Security-PolicyEnabled
X-Frame-OptionsEnabled
X-Content-Type-OptionsEnabled
Referrer-PolicyEnabled
Permissions-PolicyMissing

Compression: none · 1 cookie(s) observed

Content & assets

Headings

H1 0 · H2 1 · H3 0

Links

0 internal · 1 external · 1 broken

Images

1 total · 1 missing alt

Scripts / Styles

8 scripts · 3 stylesheets

JS / CSS size

2.2 MB · 716 KB

Page size

5.7 KB

Robots.txt & Sitemap

robots.txt: Found
Disallow rules: 0
sitemap.xml: Not found
URLs in sitemap: 0

SEO issues

Missing meta description
Missing canonical link
No H1 heading found
No structured data (JSON-LD) found
Missing OpenGraph tags
sitemap.xml not found

Scan details

Requested URL: https://tetoru.net
Final URL: https://tetoru.net/sign_in?redirect_path=%2Fschools%2Ftop_pages
HTTP status: 200
HTTP version: HTTP/2
Response time: 417 ms
HTML size: 5.7 KB
Redirect chain: https://tetoru.net → https://tetoru.net/schools/top_pages → https://tetoru.net/sign_in?redirect_path=%2Fschools%2Ftop_pages

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