Tools & Wizards About Us
landsat.com screenshot

Report Summary

  • 82

    Performance

    Renders faster than
    87% of other websites

  • 78

    Accessibility

    Visual factors better than
    that of 45% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 77

    SEO

    Google-friendlier than
    36% of websites

landsat.com

GIS Data - Aerial Photography, USGS Topo Maps, & Air Photo Maps

Page Load Speed

1.8 sec in total

First Response

154 ms

Resources Loaded

1.5 sec

Page Rendered

80 ms

landsat.com screenshot

About Website

Visit landsat.com now to see the best up-to-date Landsat content for United States and also check out these interesting facts you probably never knew about landsat.com

Aerial Photography, Topo Maps, Printed Air Photo Maps, & Satellite Imagery

Visit landsat.com

Key Findings

We analyzed Landsat.com page load time and found that the first response time was 154 ms and then it took 1.6 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 35% of websites can load faster.

Performance Metrics

landsat.com performance score

82

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.5 s

35/100

10%

LCP (Largest Contentful Paint)

Value3.5 s

65/100

25%

SI (Speed Index)

Value3.5 s

89/100

10%

TBT (Total Blocking Time)

Value10 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0.049

99/100

15%

TTI (Time to Interactive)

Value3.8 s

89/100

10%

Network Requests Diagram

landsat.com

154 ms

www.landsat.com

324 ms

styles.css

133 ms

dropdown.css

196 ms

autocomplete.css

198 ms

Our browser made a total of 39 requests to load all elements on the main page. We found that 90% of them (35 requests) were addressed to the original Landsat.com, 10% (4 requests) were made to Ssl.google-analytics.com. The less responsive or slowest element that took the longest time to load (390 ms) belongs to the original domain Landsat.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 171.8 kB (56%)

Content Size

304.7 kB

After Optimization

132.9 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Landsat.com main page is 304.7 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. 20% of websites need less resources to load. Javascripts take 153.5 kB which makes up the majority of the site volume.

HTML Optimization

-70%

Potential reduce by 9.6 kB

  • Original 13.7 kB
  • After minification 13.3 kB
  • After compression 4.1 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. HTML code on this page is well minified. It is highly recommended that content of this web page should be compressed using GZIP, as it can save up to 9.6 kB or 70% of the original size.

Image Optimization

-5%

Potential reduce by 2.2 kB

  • Original 43.7 kB
  • After minification 41.5 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. Landsat images are well optimized though.

JavaScript Optimization

-55%

Potential reduce by 83.7 kB

  • Original 153.5 kB
  • After minification 132.1 kB
  • After compression 69.8 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. It is highly recommended that all JavaScript files should be compressed and minified as it can save up to 83.7 kB or 55% of the original size.

CSS Optimization

-81%

Potential reduce by 76.3 kB

  • Original 93.8 kB
  • After minification 72.6 kB
  • After compression 17.5 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. Landsat.com needs all CSS files to be minified and compressed as it can save up to 76.3 kB or 81% of the original size.

Requests Breakdown

Number of requests can be reduced by 26 (70%)

Requests Now

37

After Optimization

11

  • Images
  • JavaScript
  • CSS

The browser has sent 37 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Landsat. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 5 to 1 for JavaScripts and from 8 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

landsat.com

landsat.com

154 ms

www.landsat.com

www.landsat.com

324 ms

styles.css

styles.css

133 ms

dropdown.css

dropdown.css

196 ms

autocomplete.css

autocomplete.css

198 ms

styles.css

styles.css

206 ms

styles.css

styles.css

206 ms

styles.css

styles.css

203 ms

jquery.js

jquery.js

286 ms

core.js

core.js

390 ms

ajax.js

ajax.js

263 ms

styles.base.css

styles.base.css

269 ms

ajax_left.gif

ajax_left.gif

67 ms

header_main_bg.jpg

header_main_bg.jpg

68 ms

header_bg.jpg

header_bg.jpg

71 ms

customer_area_logoGlobe.png

customer_area_logoGlobe.png

69 ms

top_tab_left_act_first.gif

top_tab_left_act_first.gif

75 ms

top_tab_right_active.gif

top_tab_right_active.gif

69 ms

top_tab_bg_active.gif

top_tab_bg_active.gif

132 ms

top_tab_left.gif

top_tab_left.gif

133 ms

top_tab_right.gif

top_tab_right.gif

135 ms

top_tab_bg.gif

top_tab_bg.gif

136 ms

go.gif

go.gif

138 ms

top_tools_delim.gif

top_tools_delim.gif

145 ms

empty_cart_icon.gif

empty_cart_icon.gif

197 ms

cart_list_bg.gif

cart_list_bg.gif

198 ms

empty_cart_list_icon.gif

empty_cart_list_icon.gif

200 ms

cart_arrow.gif

cart_arrow.gif

202 ms

AerialCD.jpg

AerialCD.jpg

203 ms

TopoCD.jpg

TopoCD.jpg

217 ms

Manzanita-OR.jpg

Manzanita-OR.jpg

262 ms

streetmaps.gif

streetmaps.gif

265 ms

left_col_delim.gif

left_col_delim.gif

260 ms

footer_bg.jpg

footer_bg.jpg

261 ms

ga.js

ga.js

17 ms

ga.js

ga.js

28 ms

__utm.gif

__utm.gif

11 ms

__utm.gif

__utm.gif

4 ms

print.css

print.css

68 ms

Accessibility Review

landsat.com accessibility score

78

Accessibility Issues

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

Names and labels

These are opportunities to improve the semantics of the controls in your application. This may enhance the experience for users of assistive technology, like a screen reader.

Impact

Issue

High

Form elements do not have associated labels

High

Links do not have a discernible name

Best Practices

landsat.com best practices score

67

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

High

Includes front-end JavaScript libraries with known security vulnerabilities

Low

Ensure CSP is effective against XSS attacks

User Experience

Impact

Issue

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

SEO Factors

landsat.com SEO score

77

Search Engine Optimization Advices

Language and Encoding

  • Language Detected

    EN

  • Language Claimed

    EN

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Landsat.com 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 Landsat.com 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.

Social Sharing Optimization

landsat.com

Open Graph description is not detected on the main page of Landsat. 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: