3.1 sec in total
373 ms
2.1 sec
540 ms
Welcome to nhd.usgs.gov homepage info - get ready to check Nhd Usgs best content for United States right away, or after learning these important things about nhd.usgs.gov
The National Hydrography Dataset (NHD) represents the water drainage network of the United States with features such as rivers, streams, canals, lakes, ponds, coastline, dams, and streamgages. Note – ...
Visit nhd.usgs.govWe analyzed Nhd.usgs.gov page load time and found that the first response time was 373 ms and then it took 2.7 sec to load all DOM resources and completely render a web page. This is a poor result, as 50% of websites can load faster.
nhd.usgs.gov performance score
name
value
score
weighting
Value4.0 s
23/100
10%
Value11.4 s
0/100
25%
Value6.4 s
41/100
10%
Value860 ms
33/100
30%
Value0
100/100
15%
Value10.8 s
22/100
10%
373 ms
309 ms
3 ms
28 ms
60 ms
Our browser made a total of 155 requests to load all elements on the main page. We found that 1% of them (1 request) were addressed to the original Nhd.usgs.gov, 84% (130 requests) were made to Usgs.gov and 3% (4 requests) were made to Static.addtoany.com. The less responsive or slowest element that took the longest time to load (780 ms) relates to the external source Usgs.gov.
Page size can be reduced by 135.8 kB (24%)
558.2 kB
422.3 kB
In fact, the total size of Nhd.usgs.gov main page is 558.2 kB. This result falls beyond the top 1M of websites and identifies a large and not optimized web page that may take ages to load. 65% of websites need less resources to load. Javascripts take 169.7 kB which makes up the majority of the site volume.
Potential reduce by 119.3 kB
HTML content can be minified and compressed by a website’s server. The most efficient way is to compress content using GZIP which reduces data amount travelling through the network between server and browser. This page needs HTML code to be minified as it can gain 34.1 kB, which is 24% of the original size. It is highly recommended that content of this web page should be compressed using GZIP, as it can save up to 119.3 kB or 85% of the original size.
Potential reduce by 2.4 kB
Image size optimization can help to speed up a website loading time. The chart above shows the difference between the size before and after optimization. Nhd Usgs images are well optimized though.
Potential reduce by 10.1 kB
It’s better to minify JavaScript in order to improve website performance. The diagram shows the current total size of all JavaScript files against the prospective JavaScript size after its minification and compression. This website has mostly compressed JavaScripts.
Potential reduce by 3.9 kB
CSS files minification is very important to reduce a web page rendering time. The faster CSS files can load, the earlier a page can be rendered. Nhd.usgs.gov has all CSS files already compressed.
Number of requests can be reduced by 120 (89%)
135
15
The browser has sent 135 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Nhd Usgs. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 76 to 1 for JavaScripts and from 37 to 1 for CSS and as a result speed up the page load time.
nhd.usgs.gov
373 ms
national-hydrography-dataset
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nhd.usgs.gov accessibility score
Navigation
These are opportunities to improve keyboard navigation in your application.
Impact
Issue
[id] attributes on active, focusable elements are not unique
ARIA
These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.
Impact
Issue
ARIA IDs are not unique
nhd.usgs.gov best practices score
Trust and Safety
Impact
Issue
Does not use HTTPS
Includes front-end JavaScript libraries with known security vulnerabilities
Ensure CSP is effective against XSS attacks
User Experience
Impact
Issue
Serves images with low resolution
General
Impact
Issue
Detected JavaScript libraries
Page has valid source maps
nhd.usgs.gov SEO score
Crawling and Indexing
To appear in search results, crawlers need access to your app.
Impact
Issue
Links are not crawlable
Mobile Friendly
Make sure your pages are mobile friendly so users don’t have to pinch or zoom in order to read the content pages. [Learn more](https://developers.google.com/search/mobile-sites/).
Impact
Issue
Document uses legible font sizes
Tap targets are not sized appropriately
EN
EN
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Nhd.usgs.gov can be misinterpreted by Google and other search engines. Our service has detected that English is used on the page, and it matches the claimed language. Our system also found out that Nhd.usgs.gov main page’s claimed encoding is utf-8. Use of this encoding format is the best practice as the main page visitors from all over the world won’t have any issues with symbol transcription.
nhd.usgs.gov
Open Graph description is not detected on the main page of Nhd Usgs. Lack of Open Graph description can be counter-productive for their social media presence, as such a description allows converting a website homepage (or other pages) into good-looking, rich and well-structured posts, when it is being shared on Facebook and other social media. For example, adding the following code snippet into HTML <head> tag will help to represent this web page correctly in social networks: