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bundlephobia.com

Bundlephobia | Size of npm dependencies

Last scanned Aug 24, 2026, 1:22 PM · 1 view

85

Overall score

Great

Summary

Bundlephobia helps you find the performance impact of npm packages. This website uses Next.js behind Cloudflare CDN. SEO is good (80/100) and accessibility is excellent (100/100). Security scores fair (65/100) and performance excellent (100/100). Top issue: No structured data (JSON-LD) found.

Bundlephobia helps you find the performance impact of npm packages. Find the size of any javascript package and its effect on your frontend bundle.

Top issues to fix

8 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.

  • No structured data (JSON-LD) found

    SEO

    Add JSON-LD (Organization, Article, Product…) to become eligible for rich results.

  • robots.txt not found

    SEO

    Publish /robots.txt with a Sitemap: directive to guide crawlers.

+2 more issues — details in the sections below.

80

SEO

3 issue(s) found

100

Performance

18 ms

65

Security

HTTPS & header checks

100

Accessibility

0 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.

Bundlephobia helps you find the performance impact of npm packages. Find the size of any javascript package and its effect on your frontend bundle.

X (Twitter)GitHub

Contact

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

Meta tags

Title
Bundlephobia | Size of npm dependencies
Description
Bundlephobia helps you find the performance impact of npm packages. Find the size of any javascript package and its effect on your frontend bundle.
Canonical
https://bundlephobia.com
Language
en
Charset
utf-8
Viewport
width=device-width, initial-scale=1, shrink-to-fit=no
Robots meta
Manifest
https://bundlephobia.com/manifest.json

OpenGraph & Twitter Card

OpenGraph

og:title
Bundlephobia | Size of npm dependencies
og:description
Bundlephobia helps you find the performance impact of npm packages. Find the size of any javascript package and its effect on your frontend bundle.
og:type
website
og:url
https://bundlephobia.com

Twitter Card

twitter:card
summary
twitter:title
—
twitter:description
—

Technologies

Detected frameworks, languages, and tools.

Next.js

Hosting & CDN

Hosting provider
—
CDN provider
Cloudflare
IP address
—
ASN
—

DNS records

TypeValue
A—
AAAA—
MX—
TXT—
NS—
CAA—
CNAME—
IPv6 supportNo

TLS / SSL certificate

Version
TLS 1.3
Issuer
Google Trust Services
Subject
bundlephobia.com
Valid from
Jul 8, 2026
Valid to
Oct 6, 2026
Days until expiry
42
SAN domains
bundlephobia.com, *.bundlephobia.com

Security headers

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

Compression: none · 0 cookie(s) observed

Content & assets

Headings

H1 1 · H2 0 · H3 1

Links

7 internal · 8 external · 1 broken

Images

2 total · 0 missing alt

Scripts / Styles

39 scripts · 2 stylesheets

JS / CSS size

3.0 KB · 2.6 KB

Page size

19.5 KB

Robots.txt & Sitemap

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

SEO issues

  • No structured data (JSON-LD) found
  • robots.txt not found
  • sitemap.xml not found

Accessibility issues

No accessibility issues detected.

Scan details

Requested URL
https://bundlephobia.com
Final URL
https://bundlephobia.com
HTTP status
200
HTTP version
HTTP/2
Response time
18 ms
HTML size
19.5 KB
Redirect chain
https://bundlephobia.com

See something wrong on this report? Request a correction

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Frequently asked questions

What technology does bundlephobia.com use?
bundlephobia.com is built with Next.js.
Is bundlephobia.com secure (HTTPS)?
Yes. bundlephobia.com uses TLS 1.3 with a certificate issued by Google Trust Services, valid until Oct 6, 2026.
Who hosts bundlephobia.com?
Hosting provider information for bundlephobia.com is not available yet.
What is bundlephobia.com's SEO score?
bundlephobia.com scored 80/100 for SEO in the latest analysis (great).
What is bundlephobia.com's overall website score?
bundlephobia.com has an overall SiteGraph score of 85/100, combining SEO, performance, security, and accessibility.