sheetjs.com

SheetJS - Home

Last scanned Jul 26, 2026, 5:47 AM

86

Overall score

Great

Summary

SheetJS Tools for Excel Spreadsheets. This website uses Google Analytics hosted on Cloudflare behind Cloudflare CDN. SEO is good (85/100) and accessibility is excellent (90/100). Security scores fair (70/100) and performance excellent (100/100). Top issue: No H1 heading found.

SheetJS Tools for Excel Spreadsheets

United States

Hosted on Cloudflare

Top issues to fix

5 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-Frame-Options header
Security
Add X-Frame-Options (or a CSP frame-ancestors rule) to prevent clickjacking via hidden iframes.
sitemap.xml not found
SEO
Publish an XML sitemap and reference it from robots.txt to speed up page discovery.

85

SEO

2 issue(s) found

100

Performance

148 ms

70

Security

HTTPS & header checks

90

Accessibility

1 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.

SheetJS Tools for Excel Spreadsheets

Contact

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

Source: https://sheetjs.com/support

Meta tags

Title: SheetJS - Home
Description: SheetJS Tools for Excel Spreadsheets
Canonical: https://sheetjs.com/
Language: en-US
Charset: utf-8
Viewport: width=device-width, initial-scale=1
Robots meta
Manifest: https://sheetjs.com/manifest.webmanifest

Technologies

Detected frameworks, languages, and tools.

Gatsby Google Analytics Cloudflare Analytics

Hosting & CDN

Hosting provider: Cloudflare
CDN provider: Cloudflare
IP address: 104.21.80.4
ASN: AS13335 (CLOUDFLARENET - Cloudflare, Inc., US)

DNS records

Type	Value
A	104.21.80.4 172.67.172.85
AAAA	2606:4700:3036::ac43:ac55 2606:4700:3033::6815:5004
MX	mx.zoho.com mx2.zoho.com mx3.zoho.com
TXT	v=spf1 include:zoho.com ~all google-site-verification=riErNceNFHTJ7iitg-QZGUj8h3N6w7KDzzX5QhDbrGg
NS	frank.ns.cloudflare.com ivy.ns.cloudflare.com
CAA	—
CNAME	—
IPv6 support	Yes

TLS / SSL certificate

Version: TLS 1.3
Issuer: Google Trust Services
Subject: sheetjs.com
Valid from: Jun 16, 2026
Valid to: Sep 14, 2026
Days until expiry: 47
SAN domains: sheetjs.com

Security headers

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

Compression: gzip · 0 cookie(s) observed

Content & assets

Headings

H1 0 · H2 0 · H3 0

Links

6 internal · 1 external · 0 broken

Images

2 total · 0 missing alt

Scripts / Styles

11 scripts · 0 stylesheets

JS / CSS size

63.8 KB · 3.7 KB

Page size

13.8 KB

Robots.txt & Sitemap

robots.txt: Found
Disallow rules: 9
sitemap.xml: Not found
URLs in sitemap: 0

SEO issues

No H1 heading found
sitemap.xml not found

Careers

View careers page

Role	Location	Posted
Software Engineer	—	May 31, 2023

Scan details

Requested URL: https://sheetjs.com
Final URL: https://sheetjs.com
HTTP status: 200
HTTP version: HTTP/2
Response time: 148 ms
HTML size: 13.8 KB
Redirect chain: https://sheetjs.com

See something wrong on this report? Request a correction

Same technology stack

pages.dev

Cloudflare Pages

google-analyticsgatsbycloudflare-analytics

Cloudflare· Cloudflare

databricks.com

Databricks: Leading Data and AI Platform for Enterprises

drupalgoogle-analyticsgatsby

Cloudflare· Cloudflare

springsource.org

Spring | Home

google-analyticscloudflare-analyticsgatsby

Cloudflare· Cloudflare

spring.io

Spring | Home

google-analyticsgatsbycloudflare-analytics

Cloudflare· Cloudflare

letsenhance.io

Let's Enhance: AI Image App to Upscale, Sharpen & Improve Quality Online | Try Free

google-analyticsgatsbycloudflare-analytics

auda.org.au

.au Domain Administration | auDA

google-analyticsgatsbycloudflare-analytics

Cloudflare· Cloudflare

Same hosting provider

tenstreet.com

Driver Management Platform | Tenstreet

wordpressgoogle-analyticsjquery

Cloudflare· Cloudflare

acuvue.com

India Homepage - Start Here | ACUVUE® Contact Lenses

nextjscloudflare-analytics

Cloudflare· Cloudflare

getname.pl

GetName.pl - Giełda Domen Premium | GetName.pl

nuxtcloudflare-analyticsvue

Cloudflare· Cloudflare

bond.edu.au

Bond University | Gold Coast, Queensland, Australia

drupalgoogle-analyticsvue

Cloudflare· Cloudflare

fordfoundation.org

Ford Foundation Homepage - Ford Foundation

wordpressgoogle-analytics

Cloudflare· Cloudflare

simpplr.com

Simpplr: #1 AI Intranet & Employee Experience Platform

wordpressgoogle-analyticscloudflare-analytics

Cloudflare· Cloudflare

Frequently asked questions

What technology does sheetjs.com use?: sheetjs.com is built with Gatsby, Google Analytics, Cloudflare Analytics.
Is sheetjs.com secure (HTTPS)?: Yes. sheetjs.com uses TLS 1.3 with a certificate issued by Google Trust Services, valid until Sep 14, 2026.
Who hosts sheetjs.com?: sheetjs.com is hosted on Cloudflare, behind Cloudflare CDN.
What is sheetjs.com's SEO score?: sheetjs.com scored 85/100 for SEO in the latest analysis (great).
What is sheetjs.com's overall website score?: sheetjs.com has an overall SiteGraph score of 86/100, combining SEO, performance, security, and accessibility.
Is sheetjs.com hiring?: Yes. sheetjs.com has 1 open role listed on their careers page.