StackOptic
Back to Search
caister.com favicon

caister.com

https://caister.com· First analyzed 22 May 2026· Updated 22 May 2026
Export
caister.com
Desktop screenshot of caister.com
Mobile screenshot of caister.com
Mobile

Sponsored

Hosting Provider

Hyperslice

IP Address

5.77.41.176

Site Location

🇬🇧 United Kingdomvia ip

Server Location

🇬🇧 Nottingham, United Kingdom

ASN

AS20860

Organization

Hyperslice

Server

Apache

Nameservers

ns202.eukdns.com.ns203.eukdns.com.

Performance

99

Core Web Vitals

Weight

First Contentful Paint
704 ms10%
Speed Index
915 ms10%
Largest Contentful Paint
—25%
Total Blocking Time
0.0 ms30%
Cumulative Layout Shift
0.00025%
3 KB
12 requests
0–49
50–89
90–100

Architecture Stack

Monolithic
⚙️ SSR
Infrastructure
Hosting
Hyperslice

Technology Stack

3 Technologies Detected

Analytics

2
Google Analytics
Google Analytics 4

Web Servers

1
Apache

SEO Analysis

D59/100
16
9
0
Meta Tags11/15
Content10/12
Headings8/8
Technical12/25
E-E-A-T0/7
Images4/7
Links2/5
URL5/5
Social0/5
Freshness0/4
Mobile4/4
Indexability3/3
C
caister.comcaister.com

Caister Academic Press | Books in Microbiology and Molecular Biology

Caister Academic Press. Books and ebooks in microbiology and molecular biology. Focus on current research, latest technology, new applications and emerging t...

Description truncated.
Title Length68 chars

Recommended: 50-60 chars (~405px / 580px)

Description Length162 chars

Recommended: 120-160 chars

Issues (0)

    9 issues found

    Upgrade to view details

    Crawlability

    Sitemap
    robots.txt

    6 rules

    Local SEO

    Local Search Readiness

    6/100
    Poor
    2 13 2

    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.
    11/25
    Schema Data
    0/25
    Citation
    6/25

    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.txt
    llms-full.txt
    Semantic HTML
    Heading Hierarchy
    Text ratio:21%
    Words:332
    Token eff.:Optimal
    Sections/1K:21.1

    Structured Data

    No Schema

    Citation Readiness

    Opening Summary36w
    Descriptive Headingsavg 2.1w
    Canonical URL
    Open Graph0/3
    Twitter Card0/3
    Language Tag
    Publish Date
    Author Info
    Lists
    Tables
    TL;DR / Summary
    About Page Link
    Recommendations (10)
    AI readiness recommendation preview...
    Upgrade to view recommendations

    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.
    C
    66/100
    8
    Passed
    3
    Critical
    2
    Warnings
    Images & Alt Text
    20/20
    Checks if images have descriptive alt text for screen readers and visually impaired users.
    Semantic Structure
    14/20
    Evaluates proper use of HTML5 semantic elements (header, nav, main, footer) and heading hierarchy.
    Forms & Inputs
    7/15
    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
    9/15
    Ensures all interactive elements are reachable and operable via keyboard (tab, enter, escape).
    ARIA & Roles
    1/15
    Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.
    2 recommendations
    • •Accessibility recommendation preview...
    Upgrade to view recommendations

    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.
    69/100
    A+
    <0.001 g
    CO₂e / view
    3.4 KB
    Page Weight
    95%
    Cleaner Than
    New Visitor
    <0.001 g
    vs
    Returning (cached)
    <0.001 g
    Annual (10K/mo)
    36 g
    Emission Segments
    Data Center
    <0.001 g
    Network
    <0.001 g
    Device
    <0.001 g
    Resource Breakdown
    Images
    342 B
    HTML
    3.1 KB
    Green Hosting Verified
    iomart Group PLC
    GWF Verified
    4 recommendations
    • •Carbon footprint recommendation preview...
    Upgrade to view recommendations
    F

    Security Score

    21%Critical
    Interactive

    HTTPS

    No WAF

    61d

    Certificate Details

    Type

    Domain Validated (DV)

    Certificate Authority

    Let's Encrypt

    Key Algorithm

    RSA (2048 bit)

    Signature

    SHA-256 with RSA

    TLS Version

    TLSv1.3

    HTTP Protocol

    HTTP/1.1

    Valid From

    23.04.2026

    Valid Until

    22.07.2026

    Subject Alternative Names (2)

    *.caister.comcaister.com

    SHA-256 Fingerprint

    50:4F:2B:57:09:81:59:D7:6B:BE:4D:53:50:67:DC:0F:45:E3:B0:49...

    Top Recommendations

    Security recommendation preview

    Upgrade to view recommendations
    Upgrade to view header details

    HTTP Headers

    Developer Console

    accept-ranges
    bytes
    connection
    Keep-Alive
    content-encoding
    📦 Gzip(gzip)
    content-length
    2857
    content-type
    text/html
    date
    Fri, 22 May 2026 08:08:22 GMT
    Good Warning Issue

    Email Infrastructure

    Custom Mail Server

    Score

    70

    SPF
    DKIM
    DMARC

    MX Records (1)

    caister.com

    Domain Information

    caister.com

    Domain Age
    27y 4m

    Created

    27.01.1999

    Expires

    27.01.2029

    Last Updated

    19.02.2024

    Registrar

    CSL Computer Service Langenbach GmbH d/b/a joker.com

    DNSSEC
    Not Enabled

    Privacy & Compliance

    Cookie Consent Banner
    Privacy Policy
    Terms of Service

    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.
    D
    54/100
    Mobile Friendly
    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
    2 recommendations
    • •Mobile compatibility recommendation preview...
    Upgrade to view recommendations

    Typography & Readability

    arial

    WCAG Partial
    71/100
    Readability
    /30
    17/30

    13px · LH 1.40

    Hierarchy
    /20
    17/20

    1.8x ratio · ✓ H1→H6

    WCAG
    /25
    17/25

    1:1 min contrast

    Performance
    /25
    20/25

    System fonts

    Heading Font

    arial

    Sans23px

    Body Font

    arial

    Sans13px

    Contrast Ratio

    1:1

    27 issues

    Reading Comfort

    ~44 CPL

    Narrow lines
    23px
    h1
    16px
    h2
    13px
    p

    ❌ Critical: 12px body text is too small. Minimum 14px, recommend 16px+.

    ✅ Optimal line spacing: 1.40 ratio (ideal range 1.4–1.6).

    ❌ Very complex text: Flesch score 0/100. Consider shorter sentences and simpler words.

    ⚠️ Partial contrast: 27 elements below WCAG AA threshold (min 1.0:1).

    ✅ Perfect heading hierarchy: Sequential h1→h2→h3 with single H1 — ideal for SEO & accessibility.

    ✅ System fonts: Zero font loading delay — best possible LCP impact.

    Flesch 0

    Color Palette

    5 unique colors
    Light
    #ffffff
    Background· 80.50000000000001%
    #a88b81
    Primary· 5.6%
    #151111
    Secondary· 5.2%
    #eeebea
    Secondary· 3.6%

    Business & Marketing Stack

    1 Tools Detected

    Growing

    Behavior Analytics

    1
    Google AnalyticsFree

    User behavior and product analytics

    1

    Categories

    1

    Total Tools

    0

    Enterprise

    0

    Mid-Market

    Assessment: Growing marketing technology adoption

    Sponsored

    Scripts & Styles

    4 Resources

    3
    Scripts
    1
    Styles
    3
    Async
    0
    Defer

    Top Script Sources

    googletagmanager.com(2)google-analytics.com(1)

    Website Identity

    caister.com

    27 years old
    Location detected: 🇬🇧 United Kingdomvia ip
    CSL Computer Service Langenbach GmbH d/b/a joker.comen

    Sponsored

    Last analyzed: 22 May 2026 at 08:08

    Historical Analysis & Change Tracking