Website Review: w3id.org
Generated on October 13 2026 09:45 AM
The score is 75/100
SEO Content
Title
w3id.org - Permanent Identifiers for the Web
Length : 44
Great, your title tag's length is between 40 and 70 characters. Title tag length between 50 and 70 characters is optimal for SEO.
Description
Secure, permanent URLs for your Web application that will stand the test of time.
Length : 81
Your meta description tag's length should be between 90 and 160 characters (spaces included). A description tag of 155 to 160 characters is optimal. Our free meta tag generator counts the length for you.
Keywords
W3ID, PURL, permanent identifier, perma-id, URL, w3id.org, persistent uniform resource locator
Good, your page contains a meta keywords tag.
Og Meta Properties
This page does not take advantage of Open Graph Properties. This tags allows social crawler's better structurize your page. Add og:title, og:description, og:image and og:url meta tags to the page's <head>, or create them with our free Open Graph generator.
Headings
| H1 | H2 | H3 | H4 | H5 | H6 |
| 1 | 4 | 0 | 0 | 0 | 0 |
- [H1] Permanent Identifiers for the Web
- [H2] Common starting points
- [H2] Creating an identifier
- [H2] Operation
- [H2] Community
Images
We found 0 images on this web page.
Awesome, most or all of your images have alt attributes. This helps search engines understand the content of your images.
Text/HTML Ratio
Ratio : 43%
Ideal! This page's ratio of text to HTML code is between 25 and 70 percent.
Iframe
Awesome, there are no Iframes found on this page.
SEO Links
URL Rewrite
Good. Your links look SEO friendly and are easy to crawl!
Underscores in the URLs
Great! No underscores found in your URLs.
In-page links
We found a total of 18 links including 1 link(s) to files
| Anchor | Type | Juice |
|---|---|---|
| URL | External | Passing Juice |
| W3C Permanent Identifier Community Group | External | Passing Juice |
| Linked Data | External | Passing Juice |
| switchboard | External | Passing Juice |
| What w3id.org is | Internal | Passing Juice |
| what it is and is not for | Internal | Passing Juice |
| Creating an identifier | Internal | Passing Juice |
| Maintaining an identifier | Internal | Passing Juice |
| Testing your changes | Internal | Passing Juice |
| running Apache locally | Internal | Passing Juice |
| Rules and common mistakes | Internal | Passing Juice |
| FAQ | Internal | Passing Juice |
| News | Internal | Passing Juice |
| the repository for this service | External | Passing Juice |
| request a redirect by email | Internal | Passing Juice |
| who runs it | Internal | Passing Juice |
| public-perma-id@w3.org mailing list | External | Passing Juice |
| issue tracker | External | Passing Juice |
SEO Keywords
Keywords Cloud
Keywords Consistency
| Keyword | Content | Title | Keywords | Description | Headings |
|---|---|---|---|---|---|
| identifier | 9 |  |
|
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| service | 7 | |
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| web | 6 | |
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| permanent | 6 | |
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| identifiers | 4 | |
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Usability
Url
Domain : w3id.org
Length : 8
Favicon
Great, your website has a favicon.
Language
Good. Your declared language is en.
Document
Doctype
HTML 5
Encoding
Great. Your declared charset is UTF-8.
Email Privacy
Warning! At least one email address has been found in plain text. Consider using an image or a form to hide email from spammers.
Deprecated HTML
Great! We haven't found deprecated HTML tags in your HTML.
Speed Tips
|
Perfect. No inline css was found in your HTML tags! |
|
Great, your website has few CSS files. |
|
Perfect, your website has few JavaScript files. |
|
Awesome, your website takes advantage of GZIP compression for SEO optimization. |
Mobile
Mobile Optimization
|
Apple Icon |
|
Meta Viewport Tag |
Optimization
XML Sitemap
Missing
Your website does not have an XML sitemap - this can be a problem for search engines.
An XML sitemap informs search engines about URLs available for crawling on your site. It includes information about your site's latest updates, frequency of changes and relative importance of each URL. This allows search engines to crawl the site more efficiently.
Robots.txt
http://w3id.org/robots.txt
Great, your website has a robots.txt file.
Analytics
Missing
Unverified
AI Search Readiness
AI Crawlers
This site has no robots.txt file, so AI crawlers are allowed by default.
|
OAI-SearchBot | ChatGPT search | AI search |
|
ChatGPT-User | ChatGPT (user requests) | AI search |
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Claude-SearchBot | Claude search | AI search |
|
Claude-User | Claude (user requests) | AI search |
|
PerplexityBot | Perplexity | AI search |
|
GPTBot | OpenAI training | AI training |
|
ClaudeBot | Anthropic training | AI training |
|
Google-Extended | Google Gemini training | AI training |
|
Applebot-Extended | Apple AI training | AI training |
|
CCBot | Common Crawl | AI training |
Blocking AI training crawlers is a common choice and doesn't affect the score. Only the AI search crawlers count.
Structured Data
No schema.org structured data found. Adding it (for example Organization, WebSite or Product in JSON-LD) helps search engines and AI tools understand the page and can enable rich results.
Canonical Tag
No canonical tag found. Add <link rel="canonical"> so search engines know which URL is the main version and don't split ranking between duplicates.
llms.txt
No llms.txt file. It's an emerging convention: a short Markdown summary of the site for AI tools. Optional, so it doesn't affect the score.
Security
HTTPS
The site loads over HTTPS, so connections are encrypted. Browsers and search engines expect this.
HSTS
The site sends a Strict-Transport-Security header, so browsers always use HTTPS for it.
Security Headers
0 of 5 common security headers found. At least 2 are needed to pass.
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Content-Security-Policy |
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X-Content-Type-Options |
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X-Frame-Options |
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Referrer-Policy |
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Permissions-Policy |
Domain Info
w3id.org was registered on 14 Feb 2013 with Gandi SAS and expires on 14 Feb 2027. It accepts email but has no SPF or DMARC record.
Registration
| Registrar | Gandi SAS |
| Registered | 14 Feb 2013 (13 years ago) |
| Expires | 14 Feb 2027 |
| Last changed | 11 Aug 2026 |
| Nameservers | ns-14-c.gandi.net, ns-247-b.gandi.net, ns-94-a.gandi.net |
| DNSSEC | Not signed |
Hosting
| IPv4 address | 23.253.20.182 |
|
IPv6 support |
Email Security
Mail servers: spool.mail.gandi.net, fb.mail.gandi.net
|
SPF record |
|
DMARC record |
SPF and DMARC records stop others from sending email that pretends to come from this domain. Without them, messages from it are also more likely to land in spam.
PageSpeed Insights
Device
Categories
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