bohrium.com

https://bohrium.com· First analyzed 22 May 2026· Updated 22 May 2026

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bohrium.com

Mobile

Sponsored

Hosting Provider

Alibaba Cloud

alibabacloud.com

IP Address

39.98.76.20

Site Location

🇨🇳 Chinavia ip

Server Location

🇨🇳 Beijing, China

ASN

AS37963

Organization

Aliyun Computing Co., LTD

Nameservers

vip3.alidns.com.vip4.alidns.com.

Performance

Core Web Vitals

Weight

First Contentful Paint

1.3 s10%

Speed Index

1.7 s10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

187 KB

200 requests

0–49

50–89

90–100

Architecture Stack

Hybrid

🔀 Hybrid

Frontend

Framework

Next.js

CMS

Ghost

Infrastructure

Hosting

Alibaba Cloud

Technology Stack

8 Technologies Detected

Analytics

CSS Frameworks

Meta Frameworks

Libraries

Advertising

Microsoft Advertising

SEO Analysis

C61/100

Meta Tags13/15

Content0/12

Headings0/8

Technical22/25

E-E-A-T3/7

Images4/7

Links5/5

URL5/5

Social5/5

Freshness0/4

Mobile1/4

Indexability3/3

bohrium.combohrium.com

Bohrium | AI for Science with Global Scientists

Bohrium — AI for Science with global scientists. An AI-powered all-in-one research hub offering powerful academic search, comprehensive resources, and collab...

Description truncated.

Title Length47 chars

Recommended: 50-60 chars (~280px / 580px)

Description Length197 chars

Recommended: 120-160 chars

Issues (2)

• Very thin content (8 words). Search engines need substantial content for ranking.
• Missing H1 tag — every page should have exactly one H1

7 issues found

Upgrade to view details

Crawlability

Sitemap

Type: index

347 URLs

347 sub-sitemaps

robots.txt

12 rules

Sitemap reference found

Allows all crawlers

Local SEO

Local Search Readiness

14/100

Poor

4 13 1

This site doesn't appear to be a local business. Local SEO signals are optional for non-local websites.

Sponsored

AI & LLM Readiness

F37/100

Bot Access

20/25

Machine Read.

6/25

Schema Data

2/25

Citation

9/25

AI Bot Access

14/14 accessible

AI Search

OAI-SearchBot

PerplexityBot

Claude-SearchBot

Gemini-Deep-Research

DuckAssistBot

Training

GPTBot

ClaudeBot

Google-Extended

Meta-ExternalAgent

Bytespiderinfo

Amazonbot

Applebot-Extended

CCBotinfo

Fetch

ChatGPT-User

Machine Readability

llms.txtinvalid

llms-full.txt

Semantic HTML

Heading Hierarchy

Text ratio:0%

Words:144

Token eff.:Too Short

Structured Data

1 JSON-LD

WebSite

Citation Readiness

Opening Summary

Descriptive Headings

Canonical URL

Open Graph3/3

Twitter Card3/3

Language Tag

Publish Date

Author Info

Lists

Tables

TL;DR / Summary

About Page Link

Recommendations (10)

AI readiness recommendation preview...

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Sponsored

Accessibility

WCAG 2.1 Compliance

Evaluates how accessible your website is for users with disabilities, based on WCAG 2.1 guidelines. Checks images, forms, keyboard navigation, ARIA roles, and color contrast.

70/100

Passed

Critical

Warnings

Images & Alt Text

20/20

Checks if images have descriptive alt text for screen readers and visually impaired users.

Semantic Structure

6/20

Evaluates proper use of HTML5 semantic elements (header, nav, main, footer) and heading hierarchy.

Forms & Inputs

15/15

Verifies form fields have labels, error messages are clear, and inputs are properly associated.

Color & Contrast

15/15

Tests text-to-background color contrast ratios against WCAG AA/AAA minimum requirements.

Keyboard & Focus

11/15

Ensures all interactive elements are reachable and operable via keyboard (tab, enter, escape).

ARIA & Roles

3/15

Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.

2 recommendations

•Accessibility recommendation preview...

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Carbon Footprint

SWDM v4 · Eco-Score

Carbon emissions estimated using the Sustainable Web Design Model v4 (SWDM v4). Factors in data center, network, and device energy across new and returning visitors. Grade thresholds based on HTTP Archive percentiles.

53/100

A+

23 mg

CO₂e / view

186.6 KB

Page Weight

95%

Cleaner Than

New Visitor

26 mg

Returning (cached)

13 mg

Annual (10K/mo)

2.8 kg

Emission Segments

Data Center

5 mg

Network

6 mg

Device

12 mg

Resource Breakdown

JavaScript

129.3 KB

Images

302 B

HTML

31.0 KB

Other

26.0 KB

Green Hosting Not Verified

Alibaba Cloud

4 recommendations

•Carbon footprint recommendation preview...

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Security Score

73%Good

Static / Informational

HTTPS

No WAF

241d

Certificate Details

Type

Organization Validated (OV)

Certificate Authority

DigiCert, Inc.

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.2

HTTP Protocol

HTTP/2

Valid From

18.12.2025

Valid Until

18.01.2027

OCSP Stapling

Enabled

Subject Alternative Names (2)

*.bohrium.combohrium.com

SHA-256 Fingerprint

E1:44:22:3B:BD:57:40:76:29:73:EB:16:EA:DE:C1:5F:A8:B0:16:70...

Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

cache-control

🔴 No Cache(no-cache, must-revalidate)

content-encoding

📦 Gzip(gzip)

content-type

text/html; charset=utf-8

date

Fri, 22 May 2026 08:17:06 GMT

document-policy

js-profiling

permissions-policy

clipboard-write=(self)

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

DMARC Policy

None (Monitor Only)

MX Records (3)

mx1.feishu.cn

mx3.feishu.cn

mx2.feishu.cn

Domain Information

bohrium.com

Domain Age

23y 4m

Created

01.01.2003

Expires

01.01.2034

Last Updated

21.01.2026

Registrar

Alibaba Cloud Computing Ltd. d/b/a HiChina (www.net.cn)

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

Mobile Compatibility

Viewport & Responsive Test

Tests how well your website works on mobile devices. Checks viewport configuration, responsive layout, touch targets, font readability, and simulates rendering across different screen sizes.

59/100

Mobile Friendly6 breakpoints

Viewport Meta

The viewport meta tag tells mobile browsers how to scale the page. Without it, mobile devices render at desktop width.

Responsive Design

Uses CSS media queries or flexible layouts to adapt content to different screen sizes automatically.

Touch Icons

Apple touch icons and favicons displayed when users add the site to their home screen on mobile devices.

Readable Font Size

Base font size should be at least 16px on mobile to ensure text is readable without zooming.

Relative Units

Using em, rem, %, or vw instead of fixed px values allows content to scale properly across screen sizes.

No H-Scroll Risk

No elements wider than the viewport that would cause horizontal scrolling on mobile devices.

Tap Targets OK

Interactive elements (buttons, links) are at least 48x48px with enough spacing to prevent accidental taps.

No Fixed Widths

No elements with fixed pixel widths that could overflow on smaller screens and break the layout.

Viewport

width=device-width, initial-scale=1, minimum-scale=1, maximum-scale=1, user-scalable=no

3 recommendations

•Mobile compatibility recommendation preview...

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Typography & Readability

PingFang SC

WCAG Partial

56/100

Readability

/30

15/30

32px · LH 1.19

Hierarchy

/20

10/20

WCAG

/25

16/25

1.59:1 min contrast

Performance

/25

15/25

2 fonts · 1 req

Heading Font

PingFang SC

Body Font

PingFang SC

Sans32px

Contrast Ratio

1.59:1

13 issues

Reading Comfort

Single Family

left aligned

32px

✅ Excellent readability: 32px body text is ideal for all devices.

⚠️ Tight line spacing (1.19). Increase to 1.4–1.6 for better readability.

❌ Very complex text: Flesch score 29/100. Consider shorter sentences and simpler words.

⚠️ Partial contrast: 13 elements below WCAG AA threshold (min 1.6:1).

✅ Lean font stack: 2 font families keeps load times fast.

⚠️ Missing font-display: swap — users may see invisible text while fonts load (FOIT).

Buy on MyFontsFlesch 29

Color Palette

4 unique colors

Light

#ffffff

Background· 48.300000000000004%

#dddfeb

Primary· 29.4%

#e9ecfb

Background· 18%

#b8bed1

Secondary· 4.5%

Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

30 Resources

Scripts

Styles

Async

Defer

Top Script Sources

cdn.bohrium.com(16)o.alicdn.com(2)googletagmanager.com(1)g.alicdn.com(1)

Website Identity

Bohrium

www.bohrium.com/

23 years old

Location detected: 🇨🇳 Chinavia ip

Alibaba Cloud Computing Ltd. d/b/a HiChina (www.net.cn)en-us

Sponsored

Last analyzed: 22 May 2026 at 08:17

Historical Analysis & Change Tracking