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chemsrc.com

名称,CAS号, CAS No,分子式,SMILES,InChIKey,EINECS查询 「化源网」 专业化工搜索引擎

Last scanned Jul 26, 2026, 11:49 AM

76

Overall score

Fair

Summary

化源网提供快速名称,CAS号, CAS No,分子式,SMILES,InChIKey,EINECS查询，数百万化合物的专业数据，包括物化, MSDS, 安全信息, 合成路线及文献, 毒性，上下游，期刊文献等。. This website uses Nginx. SEO is fair (65/100) and accessibility is fair (65/100). Security scores good (75/100) and performance excellent (100/100). Top issue: Title longer than 60 characters.

化源网提供快速名称,CAS号, CAS No,分子式,SMILES,InChIKey,EINECS查询，数百万化合物的专业数据，包括物化, MSDS, 安全信息, 合成路线及文献, 毒性，上下游，期刊文献等。

Top issues to fix

13 issues found · 3 high priority

  • Missing Strict-Transport-Security header

    Security

    Add HSTS so browsers always use HTTPS — this closes the protocol-downgrade attack window.

  • Missing Content-Security-Policy header

    Security

    Add a CSP to control which sources can run scripts — the strongest single defense against XSS.

  • 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.

  • Missing X-Content-Type-Options header

    Security

    Add X-Content-Type-Options: nosniff to stop MIME-sniffing attacks.

  • 1 cookie without Secure/HttpOnly flags

    Security

    Set Secure and HttpOnly on session cookies so they can't leak over HTTP or be read by injected scripts.

  • Title longer than 60 characters

    SEO

    Shorten the title to under 60 characters so search results don't truncate it.

+7 more issues — details in the sections below.

65

SEO

6 issue(s) found

100

Performance

719 ms

75

Security

HTTPS & header checks

65

Accessibility

3 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.

Organization

Company details published in this site's own structured data.

化源网提供快速名称,CAS号, CAS No,分子式,SMILES,InChIKey,EINECS查询，数百万化合物的专业数据，包括物化, MSDS, 安全信息, 合成路线及文献, 毒性，上下游，期刊文献等。

Contact

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

Meta tags

Title
名称,CAS号, CAS No,分子式,SMILES,InChIKey,EINECS查询 「化源网」 专业化工搜索引擎
Description
化源网提供快速名称,CAS号, CAS No,分子式,SMILES,InChIKey,EINECS查询，数百万化合物的专业数据，包括物化, MSDS, 安全信息, 合成路线及文献, 毒性，上下游，期刊文献等。
Canonical
https://www.chemsrc.com/
Language
Charset
UTF-8
Viewport
width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no
Robots meta
Manifest

OpenGraph & Twitter Card

OpenGraph

og:title
—
og:description
—
og:type
—
og:url
—

Twitter Card

twitter:card
—
twitter:title
—
twitter:description
—

Technologies

Detected frameworks, languages, and tools.

BootstrapjQueryGoogle AnalyticsNginx

Hosting & CDN

Hosting provider
—
CDN provider
—
IP address
—
ASN
—

DNS records

TypeValue
A—
AAAA—
MX—
TXT—
NS—
CAA—
CNAME—
IPv6 supportNo

TLS / SSL certificate

Version
TLS 1.2
Issuer
DigiCert Inc
Subject
www.chemsrc.com
Valid from
Nov 3, 2025
Valid to
Nov 2, 2026
Days until expiry
97
SAN domains
www.chemsrc.com, chemsrc.com

Security headers

  • Strict-Transport-SecurityMissing
  • Content-Security-PolicyMissing
  • X-Frame-OptionsEnabled
  • X-Content-Type-OptionsMissing
  • Referrer-PolicyMissing
  • Permissions-PolicyMissing

Compression: gzip · 1 cookie(s) observed

Content & assets

Headings

H1 0 · H2 0 · H3 2

Links

600 internal · 13 external · 20 broken

Images

10 total · 4 missing alt

Scripts / Styles

13 scripts · 5 stylesheets

JS / CSS size

3.0 KB · 4.7 KB

Page size

288 KB

Robots.txt & Sitemap

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

SEO issues

  • Title longer than 60 characters
  • Meta description longer than 160 characters
  • No H1 heading found
  • Missing OpenGraph tags
  • robots.txt not found
  • sitemap.xml not found

Accessibility issues

  • More than 20% of images are missing alt text
  • No H1 heading found
  • Missing <html lang> attribute

Scan details

Requested URL
https://chemsrc.com
Final URL
https://www.chemsrc.com/
HTTP status
200
HTTP version
HTTP/1.1
Response time
714 ms
HTML size
288 KB
Redirect chain
https://chemsrc.com → https://www.chemsrc.com/

See something wrong on this report? Request a correction

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Frequently asked questions

What technology does chemsrc.com use?
chemsrc.com is built with Bootstrap, jQuery, Google Analytics, Nginx.
Is chemsrc.com secure (HTTPS)?
Yes. chemsrc.com uses TLS 1.2 with a certificate issued by DigiCert Inc, valid until Nov 2, 2026.
Who hosts chemsrc.com?
Hosting provider information for chemsrc.com is not available yet.
What is chemsrc.com's SEO score?
chemsrc.com scored 65/100 for SEO in the latest analysis (fair).
What is chemsrc.com's overall website score?
chemsrc.com has an overall SiteGraph score of 76/100, combining SEO, performance, security, and accessibility.