dhtmlx.com website report

JavaScript UI Library & HTML5 UI Framework | DHTMLX

Last scanned Aug 24, 2026, 1:23 PM

Overall score

Great

About dhtmlx.com

DHTMLX is a company. It describes itself as “DHTMLX is a JavaScript UI library and HTML5 UI framework with advanced JS components for web apps, including Grid, Gantt, Scheduler…”. It offers JavaScript UI Library & HTML5 UI Framework | DHTMLX. It is also on X, Facebook and LinkedIn.

Score profile

Top issues to fix

7 issues found · 2 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.
Missing X-Content-Type-Options header
Security
Add X-Content-Type-Options: nosniff to stop MIME-sniffing attacks.
Missing X-Frame-Options header
Security
Add X-Frame-Options (or a CSP frame-ancestors rule) to prevent clickjacking via hidden iframes.
robots.txt not found
SEO
Publish /robots.txt with a Sitemap: directive to guide crawlers.
sitemap.xml not found
SEO
Publish an XML sitemap and reference it from robots.txt to speed up page discovery.

+1 more issue — details in the sections below.

Not enough scan history yet to show a trend — check back after this site has been re-scanned a few more times.

Technology stack

dhtmlx.com is built with jQuery and Nginx.

Libraries (1)

jQuery

Servers (1)

Nginx

Hosting & DNS

Domain

dhtmlx.com

IP address: —
ASN: —
IPv6: Not supported
HTTP: HTTP/1.1

AAAA

TXT

CAA

Show DNS record values

TXT record contents are not republished; only their count is shown.

Security

dhtmlx.com uses TLS 1.2 with a certificate valid for 69 more days and sets 0 of 6 recommended security headers.

Security

Security headers0 of 6 set

HSTS
Forces HTTPS
CSP
Blocks injected scripts
X-Frame-Options
Stops clickjacking
X-Content-Type
Stops MIME sniffing
Referrer-Policy
Limits URL leakage
Permissions-Policy
Restricts browser features

TLS certificate

VerifiedTLS 1.2 · Let's Encrypt

Aug 5, 202669 days leftNov 3, 2026

Names covered: 2
Cookies set: 0

Email security

dhtmlx.com scores D for email security, with SPF and DMARC policy “none”.

35 / 100

SPFWeak
Marks unlisted senders as suspicious (~all) but does not reject them.
DMARCWeak
Monitoring only: forged mail is still delivered.
MTA-STSNot set
Not published; mail to this domain can be downgraded to plaintext.
BIMINot set
Not published (optional).

Mail services authorised in SPF: SendGrid

Performance & carbon

dhtmlx.com scores 80/100 for performance, with an estimated load time of 0.5 s. A visit emits an estimated 0.13 g of CO2 (grade A).

Performance

Page weight

HTML 356 KB
JavaScript 3.9 KB
CSS 1018 B

Est. load: 492 ms
Response: 485 ms
Scripts / CSS: 11 / 3

Carbon per visitA

A+ABCDEF

0.13 g CO2 per uncached view

Estimate from the Sustainable Web Design model. HTML, JavaScript and CSS only; images, video and fonts are not measured. Treat it as a lower bound for comparing pages, not an audit.

SEO & accessibility

dhtmlx.com scores 90/100 for SEO and 100/100 for accessibility, with 2 SEO issues to fix.

SEO

Accessibility

Heading structure

One H1: good.

Image alt text

100%

159 images · 0 without alt text · 0 lazy-loaded

SEO issues2

robots.txt not found
sitemap.xml not found

Accessibility issues0

No accessibility issues detected.

Company

Organization

Company details published in this site's own structured data.

DHTMLX

DHTMLX is a JavaScript UI library and HTML5 UI framework with advanced JS components for web apps, including Grid, Gantt, Scheduler, Kanban, Diagram, and more.

X (Twitter)Facebook LinkedIn

Products & pricing

Product and pricing information published in this site's own structured data.

JavaScript UI Library & HTML5 UI Framework | DHTMLX

Technical details

Page metadata, social tags, crawl files and scan information.

Meta tags

Title: JavaScript UI Library & HTML5 UI Framework | DHTMLX
Description: DHTMLX is a JavaScript UI library and HTML5 UI framework with advanced JS components for web apps, including Grid, Gantt, Scheduler, Kanban, Diagram, and more.
Canonical: https://dhtmlx.com/
Language: en-US
Robots meta: INDEX,FOLLOW

Crawl files

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

Structured data

OrganizationProduct

Microdata items: 0
RDFa items: 0

Scan

Final URL: https://dhtmlx.com
HTTP status: 200
Redirects: https://dhtmlx.com
Scanned: Aug 24, 2026, 1:23 PM

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