sheetjs.com

https://sheetjs.com· First analyzed 25 May 2026· Updated 25 May 2026

Export

sheetjs.com

Mobile

Sponsored

Hosting Provider

Cloudflare

cloudflare.com

IP Address

172.67.172.85

Site Location

🇨🇦 Canadavia ip

Server Location

🇨🇦 Toronto, Canada

ASN

AS13335

Organization

Cloudflare, Inc.

Server

Cloudflare

CDN

Cloudflare

WAF

Cloudflare

Nameservers

ivy.ns.cloudflare.com.frank.ns.cloudflare.com.

Performance

100

Core Web Vitals

Weight

First Contentful Paint

124 ms10%

Speed Index

161 ms10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

6 KB

11 requests

0–49

50–89

90–100

Architecture Stack

Hybrid

⚡ SSG

Frontend

Framework

Gatsby

Infrastructure

Hosting

Cloudflare

CDN

Cloudflare

Progressive Web App

Web ManifestApple Touch IconTheme Color

Technology Stack

4 Technologies Detected

Analytics

Meta Frameworks

CDN

SEO Analysis

D56/100

Meta Tags5/15

Content3/12

Headings0/8

Technical20/25

E-E-A-T5/7

Images4/7

Links5/5

URL5/5

Social5/5

Freshness0/4

Mobile1/4

Indexability3/3

sheetjs.comsheetjs.com

SheetJS - Home

SheetJS Tools for Excel Spreadsheets

Title Length14 chars

Recommended: 50-60 chars (~89px / 580px)

Description Length36 chars

Recommended: 120-160 chars

Issues (1)

• Missing H1 tag — every page should have exactly one H1

9 issues found

Upgrade to view details

Crawlability

Sitemap

robots.txt

21 rules

Local SEO

Local Search Readiness

7/100

Poor

2 14 1

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

Sponsored

AI & LLM Readiness

F29/100

Bot Access

15/25

Machine Read.

1/25

Schema Data

2/25

Citation

11/25

AI Bot Access

6/14 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:5%

Words:85

Token eff.:Too Short

Structured Data

1 JSON-LD

Organization×1.1

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...

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.

69/100

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

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.

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.

78/100

A+

<0.001 g

CO₂e / view

5.7 KB

Page Weight

95%

Cleaner Than

New Visitor

<0.001 g

Returning (cached)

<0.001 g

Annual (10K/mo)

72 g

Emission Segments

Data Center

<0.001 g

Network

<0.001 g

Device

<0.001 g

Resource Breakdown

JavaScript

900 B

Images

600 B

HTML

4.2 KB

Green Hosting Verified

Cloudflare

GWF Verified

2 recommendations

•Carbon footprint recommendation preview...

Upgrade to view recommendations

Security Score

78%Good

Static / Informational

HTTPS

WAF

53d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Google Trust Services

Key Algorithm

ECDSA (secp256r1) (256 bit)

Signature

ECDSA with SHA-256

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2+H3

Valid From

18.04.2026

Valid Until

17.07.2026

OCSP Stapling

Enabled

Subject Alternative Names (1)

sheetjs.com

SHA-256 Fingerprint

C9:9F:65:30:B3:34:8A:8C:1F:EE:73:EC:5B:CC:58:B8:41:D9:D0:E6...

Recommendations

Security recommendation preview

Upgrade to view recommendations

Upgrade to view header details

HTTP Headers

Developer Console

access-control-allow-origin

alt-svc

h3=":443"; ma=86400

cache-control

🟡 0s(public, max-age=0, must-revalidate)

cf-cache-status

DYNAMIC

cf-ray

a0118005ee08ea58-FCO

content-encoding

⚡ Brotli(br)

Good Warning Issue

Email Infrastructure

Zoho Mail

Score

SPF

DKIM

DMARC

MX Records (3)

mx2.zoho.com

mx3.zoho.com

mx.zoho.com

Domain Information

sheetjs.com

Domain Age

13 years

Created

05.05.2013

Expires

05.05.2027

Last Updated

05.04.2026

Registrar

Cloudflare, Inc.

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

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.

69/100

Mobile Friendly2 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, shrink-to-fit=no

2 recommendations

•Mobile compatibility recommendation preview...

Upgrade to view recommendations

Typography & Readability

-apple-system

WCAG AAA

72/100

Readability

/30

19/30

16px · LH --

Hierarchy

/20

9/20

WCAG

/25

24/25

10.74:1 min contrast

Performance

/25

20/25

System fonts

Heading Font

-apple-system

Body Font

-apple-system

Sans16px

Contrast Ratio

10.74:1

WCAG AAA (≥7:1)

Reading Comfort

Single Family

center aligned

✅ Excellent readability: 16px body text is ideal for all devices.

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

✅ WCAG AAA contrast: All text meets 7:1 ratio (min 10.7:1).

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

Flesch 0

Color Palette

8 unique colors

3.8:1 AA Large Light

#ffffff

Primary· 91.30000000000003%

#828383

Other· 1.1%

#dcf2f5

Accent· 1.9000000000000001%

#9ad1bb

Secondary· 1.1%

#bbeee1

Accent· 0.1%

Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

6 Resources

Scripts

Styles

Async

Defer

Top Script Sources

local(3)static.cloudflareinsights.com(2)googletagmanager.com(1)

Website Identity

sheetjs.com

13 years old

Location detected: 🇨🇦 Canadavia ip

Cloudflare, Inc.📧 Zoho Mailen-US

Sponsored

Last analyzed: 25 May 2026 at 03:37

Historical Analysis & Change Tracking