Website Review: nauticalcharts.noaa.gov
Generated on January 13 2023 20:57 PM
Old data? UPDATE !
The score is 36/100
SEO Content
Title
U.S. Office of Coast Survey
Length : 27
Your title's length should be between 40 and 70 characters. The optimal title length is between 50 to 70 chars. Rewrite the title tag to fit this range, or use our free meta tag generator.
Description
Length : 0
Very bad. We haven't found meta description tag on your page. A description tag helps you control what your listings look in search engine results. Add a meta description tag to the page's <head> (our free meta tag generator writes one for you).
Keywords
Not good (but low priority). We haven't found a meta keywords tag on your page. You can add a meta keywords tag to the page's <head> with our free meta tag generator.
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 |
| 0 | 0 | 0 | 0 | 9 | 0 |
- [H5] Chart Locator
- [H5] Coast Survey Blog
- [H5] Certified Charts & Products
- [H5] General Use Charts
- [H5] Chart Viewers
- [H5] Services & Publications
- [H5] Chart Locator
- [H5] Coast Survey Blog
- [H5] NOAA's Office of Coast Survey
Images
We found 14 images on this web page.
4 image alt attributes were missing. Please add alt text to all images to help search engines better understand the content of your images.
Text/HTML Ratio
Ratio : 12%
This page's ratio of text to HTML code is below 20 percent, this means that your website probably needs more text content in order to do well in search engines. Note: This may also result from a false reading due to your server blocking external scripts from accessing the home page.
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
We have detected underscores in your URLs. It would be better to use hyphens to optimize your SEO.
In-page links
We found a total of 78 links including 5 link(s) to files
| Anchor | Type | Juice |
|---|---|---|
| National Oceanic and Atmospheric Administration | External | Passing Juice |
| U.S. Department of Commerce | External | Passing Juice |
| Home | Internal | Passing Juice |
| Future of NOAA Charts | Internal | Passing Juice |
| Future of NOAA Charts | Internal | Passing Juice |
| Rescheming and Improving ENCs | Internal | Passing Juice |
| NOAA Custom Charts | Internal | Passing Juice |
| Farewell to Traditional NOAA Charts | Internal | Passing Juice |
| ENC Rescheming Status | External | Passing Juice |
| Paper and Raster Charts | Internal | Passing Juice |
| NOAA Custom Charts | External | Passing Juice |
| Chart Locator | External | Passing Juice |
| ENC Viewer | Internal | Passing Juice |
| Historical Charts | External | Passing Juice |
| Training Charts | External | Passing Juice |
| Chart Updates | Internal | Passing Juice |
| Latest Editions | Internal | Passing Juice |
| Chart Carriage Requirements | Internal | Passing Juice |
| U.S. Chart No. 1 (Chart Symbols) | Internal | Passing Juice |
| Distances Between U.S. Ports | Internal | Passing Juice |
| National Charting Plan | Internal | Passing Juice |
| Sunsetting Traditional NOAA Paper Charts | Internal | Passing Juice |
| Transforming the ENC | Internal | Passing Juice |
| Coast Survey Ocean Mapping Strategy | Internal | Passing Juice |
| National Hydrographic Survey Priorities | Internal | Passing Juice |
| Standards and Requirements | Internal | Passing Juice |
| Coast Survey Technical Documents | External | Passing Juice |
| Techical Memos | External | Passing Juice |
| Technical Reports | External | Passing Juice |
| Tools & Apps | Internal | Passing Juice |
| Data Management | Internal | Passing Juice |
| Data Licensing | Internal | Passing Juice |
| GIS Data & Services | Internal | Passing Juice |
| nowCOAST™ | External | Passing Juice |
| Hydrographic Survey Data | Internal | Passing Juice |
| BlueTopo™ Specifications | Internal | Passing Juice |
| Wrecks and Obstructions Database | Internal | Passing Juice |
| Current Year Survey Plans | Internal | Passing Juice |
| U.S. Maritime Limits and Boundaries | Internal | Passing Juice |
| Tides & Currents | External | Passing Juice |
| Nautical Cartography | Internal | Passing Juice |
| Chart Source Data | Internal | Passing Juice |
| Hydrographic Surveying | Internal | Passing Juice |
| BlueTopo™ | Internal | Passing Juice |
| Coastal & Ocean Prediction Models | Internal | Passing Juice |
| Precision Marine Navigation | External | Passing Juice |
| Educational Activities | Internal | Passing Juice |
| Frequently Asked Questions | Internal | Passing Juice |
| Nav-cast Webinars | Internal | Passing Juice |
| Regional Navigation Managers | Internal | Passing Juice |
| Navigation Response Teams | Internal | Passing Juice |
| Citizen Science | Internal | Passing Juice |
| Ask a Question / Report an Error | Internal | Passing Juice |
| Staff Directory | External | Passing Juice |
| About Coast Survey | Internal | Passing Juice |
| Survey Vessels | Internal | Passing Juice |
| Employment & Internships | Internal | Passing Juice |
| Business & Partnerships | Internal | Passing Juice |
| Coast Survey Blog | Internal | Passing Juice |
| Contact | Internal | Passing Juice |
| NOAA Custom Chart | Internal | Passing Juice |
| Full-size Nautical Charts | Internal | Passing Juice |
| NOAA Chart Display Viewer Prototype | Internal | Passing Juice |
| View Nautical Charts | External | Passing Juice |
| Chart Updates | External | Passing Juice |
| IOCM | External | Passing Juice |
| HSRP | Internal | Passing Juice |
| Privacy Policy | Internal | Passing Juice |
| Disclaimer | External | Passing Juice |
| Information Quality | External | Passing Juice |
| Freedom of Information Act | External | Passing Juice |
| USA.gov | External | Passing Juice |
| Ready.gov | External | Passing Juice |
| EEO | External | Passing Juice |
| Take our Survey | Internal | Passing Juice |
| Office of Coast Survey | Internal | Passing Juice |
| National Ocean Service | External | Passing Juice |
| Department of Commerce | External | Passing Juice |
SEO Keywords
Keywords Consistency
| Keyword | Content | Title | Keywords | Description | Headings |
|---|---|---|---|---|---|
| charts | 20 |  |
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| noaa | 15 | |
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| chart | 9 | |
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| nautical | 9 | |
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| coast | 8 | |
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Usability
Url
Domain : nauticalcharts.noaa.gov
Length : 23
Favicon
Great, your website has a favicon.
Language
Good. Your declared language is en.
Document
Doctype
HTML 4.01 Strict
Encoding
The page does not declare a charset. Add <meta charset='utf-8'> at the top of the page's <head> to declare the document's charset (our free meta tag generator includes it).
Email Privacy
Great no email address was found in plain text!
Deprecated HTML
Great! We haven't found deprecated HTML tags in your HTML.
Speed Tips
|
Not great, your website is using inline styles. This is not optimal. |
|
Not good, your website has too many CSS files (more than 4). |
|
This website has an excessive amount of Javascript files (more than 6). |
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This website does not take advantage of GZIP optimization. GZIP compression means your site loads faster for your visitors and improves the user's experience. |
Mobile
Mobile Optimization
|
Apple Icon |
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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://nauticalcharts.noaa.gov/robots.txt
Great, your website has a robots.txt file.
Analytics
Great, your website uses an analytics script.
Google Analytics |
AI Search Readiness
These checks were added after this site was analyzed, so they aren't part of its score yet. They will be from the next update.
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 |
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Claude-User | Claude (user requests) | AI search |
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PerplexityBot | Perplexity | AI search |
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GPTBot | OpenAI training | AI training |
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ClaudeBot | Anthropic training | AI training |
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Google-Extended | Google Gemini training | AI training |
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Applebot-Extended | Apple AI training | AI training |
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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
4 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
nauticalcharts.noaa.gov has no mail server (MX) records. The Wayback Machine first archived it in February 2003.
Hosting
| IPv4 address | 18.244.214.81, 18.244.214.85, 18.244.214.70, 18.244.214.18 |
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IPv6 support |
Email Security
This domain has no mail server (MX) records, so it doesn't receive email.
|
SPF record |
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DMARC record |
Archive History
The Wayback Machine has snapshots of this site from 254 different months, from February 2003 to October 2026. View snapshots
PageSpeed Insights
Device
Categories
GoInfosystems
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