zed.dev
Zed — Your last next editor
Last scanned Aug 1, 2026, 7:00 PM · 6 views
Overall score
Great
Summary
Zed is a high-performance, multiplayer code editor from the creators of Atom and Tree-sitter. This website uses Next.js behind Cloudflare CDN. SEO is good (75/100) and accessibility is excellent (100/100). Security scores excellent (90/100) and performance fair (65/100). Top issue: Missing canonical link.
Zed is a high-performance, multiplayer code editor from the creators of Atom and Tree-sitter.
Top issues to fix
7 issues found · 1 high priority
Missing Strict-Transport-Security header
SecurityAdd HSTS so browsers always use HTTPS — this closes the protocol-downgrade attack window.
Missing canonical link
SEOAdd <link rel="canonical"> so search engines know which URL variant to index.
No structured data (JSON-LD) found
SEOAdd JSON-LD (Organization, Article, Product…) to become eligible for rich results.
robots.txt not found
SEOPublish /robots.txt with a Sitemap: directive to guide crawlers.
sitemap.xml not found
SEOPublish an XML sitemap and reference it from robots.txt to speed up page discovery.
Heavy page (2.6 MB)
PerformanceAim for under 2 MB: compress images and split large JavaScript bundles.
+1 more issue — details in the sections below.
SEO
4 issue(s) found
Performance
505 ms
Security
HTTPS & header checks
Accessibility
0 issue(s) found
Score history
-3 overall since Jul 25, 2026
- Overall
- 81
- SEO
- 75
- Security
- 90
- Performance
- 65
- Accessibility
- 100
Organization
Company details published in this site's own structured data.
Zed is a high-performance, multiplayer code editor from the creators of Atom and Tree-sitter.
Contact
Email, phone, and address published on this site's own pages.
Meta tags
- Title
- Zed — Your last next editor
- Description
- Zed is a high-performance, multiplayer code editor from the creators of Atom and Tree-sitter.
- Canonical
- Language
- en
- Charset
- utf-8
- Viewport
- width=device-width, initial-scale=1
- Robots meta
- Manifest
Technologies
Detected frameworks, languages, and tools.
Hosting & CDN
- Hosting provider
- —
- CDN provider
- Cloudflare
- IP address
- —
- ASN
- —
DNS records
| Type | Value |
|---|---|
| A | — |
| AAAA | — |
| MX | — |
| TXT | — |
| NS | — |
| CAA | — |
| CNAME | — |
| IPv6 support | No |
TLS / SSL certificate
- Version
- TLS 1.3
- Issuer
- Google Trust Services
- Subject
- zed.dev
- Valid from
- Jul 23, 2026
- Valid to
- Oct 21, 2026
- Days until expiry
- 80
- SAN domains
- zed.dev, delta-prototype.zed.dev, *.delta-prototype.zed.dev
Security headers
- Strict-Transport-SecurityMissing
- Content-Security-PolicyEnabled
- X-Frame-OptionsEnabled
- X-Content-Type-OptionsEnabled
- Referrer-PolicyMissing
- Permissions-PolicyMissing
Compression: gzip · 1 cookie(s) observed
Content & assets
Headings
H1 1 · H2 11 · H3 12
Links
64 internal · 12 external · 20 broken
Images
35 total · 0 missing alt
Scripts / Styles
667 scripts · 2 stylesheets
JS / CSS size
1.8 MB · 18.9 KB
Page size
2.6 MB
Robots.txt & Sitemap
- robots.txt
- Not found
- Disallow rules
- 0
- sitemap.xml
- Not found
- URLs in sitemap
- 0
SEO issues
- Missing canonical link
- 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://zed.dev
- Final URL
- https://zed.dev
- HTTP status
- 200
- HTTP version
- HTTP/2
- Response time
- 452 ms
- HTML size
- 2.6 MB
- Redirect chain
- https://zed.dev
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Frequently asked questions
- What technology does zed.dev use?
- zed.dev is built with Next.js.
- Is zed.dev secure (HTTPS)?
- Yes. zed.dev uses TLS 1.3 with a certificate issued by Google Trust Services, valid until Oct 21, 2026.
- Who hosts zed.dev?
- Hosting provider information for zed.dev is not available yet.
- What is zed.dev's SEO score?
- zed.dev scored 75/100 for SEO in the latest analysis (fair).
- What is zed.dev's overall website score?
- zed.dev has an overall SiteGraph score of 81/100, combining SEO, performance, security, and accessibility.
- Has zed.dev's score changed over time?
- zed.dev's overall score has declined by 3 points (from 84 to 81) since Jul 25, 2026.
OpenGraph & Twitter Card
OpenGraph
Twitter Card