xpdf.net

https://xpdf.net· First analyzed 20 May 2026· Updated 20 May 2026

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xpdf.net

Mobile

Sponsored

Hosting Provider

Alibaba Cloud

alibabacloud.com

IP Address

43.109.101.8

Site Location

🇫🇮 Finlandvia ip

Server Location

🇫🇮 Helsinki, Finland

ASN

AS24429

Organization

Alibaba.com LLC

Server

Tengine

CDN

Performance

Core Web Vitals

Weight

First Contentful Paint

2.8 s10%

Speed Index

3.6 s10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

546 KB

25 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

Alibaba Cloud

CDN

Technology Stack

5 Technologies Detected

Frameworks

Libraries

CSS Frameworks

Fonts

Web Servers

SEO Analysis

D52/100

Meta Tags5/15

Content5/12

Headings5/8

Technical16/25

E-E-A-T3/7

Images1/7

Links5/5

URL5/5

Social0/5

Freshness0/4

Mobile4/4

Indexability3/3

xpdf.netxpdf.net

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Title Length20 chars

Recommended: 50-60 chars (~121px / 580px)

Description Length35 chars

Recommended: 120-160 chars

Issues (1)

• Most images missing alt text (4/6) — critical for accessibility and SEO

12 issues found

Upgrade to view details

Crawlability

Sitemap

Type: standard

251 URLs

robots.txt

1 rules

Allows all crawlers

Local SEO

Local Search Readiness

3/100

Poor

1 14 2

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

Sponsored

AI & LLM Readiness

F33/100

Bot Access

20/25

Machine Read.

2/25

Schema Data

0/25

Citation

11/25

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:1%

Words:253

Token eff.:Too Short

Sections/1K:19.8

Structured Data

No Schema

Citation Readiness

Opening Summary94w

Descriptive Headingsavg 1.9w

Canonical URL

Open Graph0/3

Twitter Card0/3

Language Tag

Publish Date

Author Info

Lists

Tables

TL;DR / Summary

About Page Link

Recommendations (11)

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.

56/100

Passed

Critical

Warnings

Images & Alt Text

10/20

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

Semantic Structure

13/20

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

Forms & Inputs

5/15

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

4/15

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

4 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.

49/100

68 mg

CO₂e / view

546.0 KB

Page Weight

80%

Cleaner Than

New Visitor

77 mg

Returning (cached)

39 mg

Annual (10K/mo)

8.1 kg

Emission Segments

Data Center

15 mg

Network

16 mg

Device

36 mg

Resource Breakdown

JavaScript

409.5 KB

Images

38.7 KB

CSS

53.4 KB

HTML

44.4 KB

Green Hosting Not Verified

Alibaba Cloud

4 recommendations

•Carbon footprint recommendation preview...

Upgrade to view recommendations

Security Score

21%Critical

Interactive

HTTPS

No WAF

197d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

GoGetSSL

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

03.11.2025

Valid Until

03.12.2026

OCSP Stapling

Enabled

Subject Alternative Names (2)

xpdf.cnwww.xpdf.cn

SHA-256 Fingerprint

53:82:2A:9F:76:91:1F:D3:FD:4A:5A:8D:B4:62:27:98:5D:A5:32:D7...

Top Recommendations

Security recommendation preview

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Upgrade to view header details

HTTP Headers

Developer Console

age

1867167

ali-swift-global-savetime

1777405940

content-encoding

📦 Gzip(gzip)

content-type

text/html

date

Tue, 28 Apr 2026 19:52:20 GMT

eagleid

2ff6319917792731074374972e

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

Domain Information

xpdf.net

Domain Age

10y 3m

Created

23.01.2016

Expires

23.01.2030

Last Updated

13.09.2024

Registrar

Alibaba Cloud Computing (Beijing) Co., Ltd.

DNSSEC

Not Enabled

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.

64/100

Mobile Friendly1 breakpoint

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, viewport-fit=cover

2 recommendations

•Mobile compatibility recommendation preview...

Upgrade to view recommendations

Typography & Readability

-apple-system

WCAG Partial

65/100

Readability

/30

13/30

13px · LH 1.75

Hierarchy

/20

15/20

2.54x ratio

WCAG

/25

17/25

2.85:1 min contrast

Performance

/25

20/25

System fonts

Heading Font

-apple-system

Sans32px

Body Font

-apple-system

Sans13px

Contrast Ratio

2.85:1

11 issues

Reading Comfort

Single Font Family

left aligned

32px

18px

14px

13px

❌ Critical: 13px body text is too small. Minimum 14px, recommend 16px+.

⚠️ Hard to read: Flesch score 32/100. Simplify sentences for wider reach.

⚠️ Partial contrast: 11 elements below WCAG AA threshold (min 2.9:1).

⚠️ Minor heading issue: 1 level skip(s) detected. Maintain sequential order for screen readers.

✅ Strong hierarchy: Headlines are 2.5x larger than body text.

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

Flesch 32

Color Palette

5 unique colors

4.44:1 AA Large Light

#ffffff

Background· 91.09999999999998%

#747786

Other· 2.2%

#206bc4

Primary· 0%

Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

17 Resources

Scripts

Styles

Async

Defer

Top Script Sources

cdn.xpdf.cn(5)local(3)hm.baidu.com(1)polyfill.alicdn.com(1)gosspublic.alicdn.com(1)

Website Identity

xpdf.net

10 years old

Location detected: 🇫🇮 Finlandvia ip

Alibaba Cloud Computing (Beijing) Co., Ltd.zh-CN

Sponsored

Last analyzed: 20 May 2026 at 10:32

Historical Analysis & Change Tracking