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polygon.io

Stock Market API | Massive

Last scanned Jul 26, 2026, 5:17 AM

80

Overall score

Great

Summary

Stock API with real-time and historical tick data, unlimited usage via REST or WebSockets, standardized JSON and CSV formats. This website uses Next.js. SEO is good (80/100) and accessibility is excellent (100/100). Security scores good (75/100) and performance fair (70/100). Top issue: No structured data (JSON-LD) found.

Stock API with real-time and historical tick data, unlimited usage via REST or WebSockets, standardized JSON and CSV formats. Instant access free tier.

Top issues to fix

9 issues found · 2 high priority

  • Missing Content-Security-Policy header

    Security

    Add a CSP to control which sources can run scripts — the strongest single defense against XSS.

  • Slow estimated load (11.0s)

    Performance

    Use a CDN, enable caching/compression, and cut render-blocking assets — every extra second costs conversions.

  • 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.

  • 1 cookie without Secure/HttpOnly flags

    Security

    Set Secure and HttpOnly on session cookies so they can't leak over HTTP or be read by injected scripts.

  • No structured data (JSON-LD) found

    SEO

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

+3 more issues — details in the sections below.

80

SEO

3 issue(s) found

70

Performance

10.96 s

75

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.

Stock API with real-time and historical tick data, unlimited usage via REST or WebSockets, standardized JSON and CSV formats. Instant access free tier.

FacebookInstagramX (Twitter)GitHubYouTube

Meta tags

Title
Stock Market API | Massive
Description
Stock API with real-time and historical tick data, unlimited usage via REST or WebSockets, standardized JSON and CSV formats. Instant access free tier.
Canonical
https://massive.com
Language
en
Charset
utf-8
Viewport
width=device-width, initial-scale=1
Robots meta
Manifest

OpenGraph & Twitter Card

OpenGraph

og:title
Stock Market API | Massive
og:description
Stock API with real-time and historical tick data, unlimited usage via REST or WebSockets, standardized JSON and CSV formats. Instant access free tier.
og:type
website
og:url
—

Twitter Card

twitter:card
summary_large_image
twitter:title
Stock Market API | Massive
twitter:description
Stock API with real-time and historical tick data, unlimited usage via REST or WebSockets, standardized JSON and CSV formats. Instant access free tier.

Technologies

Detected frameworks, languages, and tools.

Next.js

Hosting & CDN

Hosting provider
—
CDN provider
—
IP address
—
ASN
—

DNS records

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

TLS / SSL certificate

Version
TLS 1.3
Issuer
Let's Encrypt
Subject
massive.com
Valid from
Jun 18, 2026
Valid to
Sep 16, 2026
Days until expiry
52
SAN domains
massive.com, ny5.massive.com

Security headers

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

Compression: gzip · 1 cookie(s) observed

Content & assets

Headings

H1 1 · H2 9 · H3 18

Links

32 internal · 5 external · 14 broken

Images

25 total · 0 missing alt

Scripts / Styles

113 scripts · 1 stylesheets

JS / CSS size

267 KB · 0 B

Page size

361 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://polygon.io
Final URL
https://massive.com/
HTTP status
200
HTTP version
HTTP/2
Response time
10.95 s
HTML size
361 KB
Redirect chain
https://polygon.io → https://massive.com/

See something wrong on this report? Request a correction

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Frequently asked questions

What technology does polygon.io use?
polygon.io is built with Next.js.
Is polygon.io secure (HTTPS)?
Yes. polygon.io uses TLS 1.3 with a certificate issued by Let's Encrypt, valid until Sep 16, 2026.
Who hosts polygon.io?
Hosting provider information for polygon.io is not available yet.
What is polygon.io's SEO score?
polygon.io scored 80/100 for SEO in the latest analysis (great).
What is polygon.io's overall website score?
polygon.io has an overall SiteGraph score of 80/100, combining SEO, performance, security, and accessibility.