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topozone.com screenshot

Report Summary

  • 18

    Performance

    Renders faster than
    34% of other websites

  • 82

    Accessibility

    Visual factors better than
    that of 54% of websites

  • 92

    Best Practices

    More advanced features
    available than in
    81% of websites

  • 88

    SEO

    Google-friendlier than
    66% of websites

topozone.com

Free USGS Topographic Maps Online - Topo Zone

Page Load Speed

2.4 sec in total

First Response

208 ms

Resources Loaded

1.9 sec

Page Rendered

318 ms

topozone.com screenshot

About Website

Welcome to topozone.com homepage info - get ready to check Topo Zone best content for United States right away, or after learning these important things about topozone.com

FREE topographic maps online 24/7. View all of our high-quality shaded relief USGS topo maps, Forest Service maps, satellite images, and custom map layers for free.

Visit topozone.com

Key Findings

We analyzed Topozone.com page load time and found that the first response time was 208 ms and then it took 2.2 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 40% of websites can load faster.

Performance Metrics

topozone.com performance score

18

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.2 s

20/100

10%

LCP (Largest Contentful Paint)

Value10.3 s

0/100

25%

SI (Speed Index)

Value11.1 s

5/100

10%

TBT (Total Blocking Time)

Value3,210 ms

2/100

30%

CLS (Cumulative Layout Shift)

Value0.003

100/100

15%

TTI (Time to Interactive)

Value19.4 s

2/100

10%

Network Requests Diagram

topozone.com

208 ms

www.topozone.com

222 ms

www.topozone.com

290 ms

js

64 ms

wp-emoji-release.min.js

69 ms

Our browser made a total of 55 requests to load all elements on the main page. We found that 47% of them (26 requests) were addressed to the original Topozone.com, 7% (4 requests) were made to Unpkg.com and 5% (3 requests) were made to Pagead2.googlesyndication.com. The less responsive or slowest element that took the longest time to load (561 ms) relates to the external source Googleads.g.doubleclick.net.

Page Optimization Overview & Recommendations

Page size can be reduced by 153.5 kB (14%)

Content Size

1.1 MB

After Optimization

961.7 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Topozone.com main page is 1.1 MB. This result falls beyond the top 1M of websites and identifies a large and not optimized web page that may take ages to load. 75% of websites need less resources to load and that’s why Accessify’s recommendations for optimization and resource minification can be helpful for this project. Images take 529.0 kB which makes up the majority of the site volume.

HTML Optimization

-71%

Potential reduce by 97.1 kB

  • Original 136.6 kB
  • After minification 135.2 kB
  • After compression 39.5 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 97.1 kB or 71% of the original size.

Image Optimization

-9%

Potential reduce by 46.4 kB

  • Original 529.0 kB
  • After minification 482.6 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. Topo Zone images are well optimized though.

JavaScript Optimization

-0%

Potential reduce by 1.6 kB

  • Original 426.9 kB
  • After minification 426.9 kB
  • After compression 425.3 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.

CSS Optimization

-37%

Potential reduce by 8.4 kB

  • Original 22.7 kB
  • After minification 15.2 kB
  • After compression 14.2 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. Topozone.com needs all CSS files to be minified and compressed as it can save up to 8.4 kB or 37% of the original size.

Requests Breakdown

Number of requests can be reduced by 30 (64%)

Requests Now

47

After Optimization

17

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 47 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Topo Zone. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 23 to 1 for JavaScripts and from 9 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

topozone.com

topozone.com

208 ms

www.topozone.com

www.topozone.com

222 ms

www.topozone.com

www.topozone.com

290 ms

js

js

64 ms

wp-emoji-release.min.js

wp-emoji-release.min.js

69 ms

jquery.bxslider.css

jquery.bxslider.css

112 ms

style.min.css

style.min.css

113 ms

classic-themes.min.css

classic-themes.min.css

70 ms

map-style.css

map-style.css

110 ms

font-awesome.min.css

font-awesome.min.css

67 ms

leaflet.css

leaflet.css

123 ms

leaflet.fullscreen.css

leaflet.fullscreen.css

38 ms

jquery.min.js

jquery.min.js

70 ms

jquery-migrate.min.js

jquery-migrate.min.js

115 ms

jquery.bxslider.min.js

jquery.bxslider.min.js

115 ms

scrollfix.js

scrollfix.js

114 ms

scripts.js

scripts.js

121 ms

leaflet.js

leaflet.js

134 ms

leaflet.markercluster-src.js

leaflet.markercluster-src.js

120 ms

Leaflet.fullscreen.min.js

Leaflet.fullscreen.min.js

36 ms

style.css

style.css

121 ms

adsbygoogle.js

adsbygoogle.js

131 ms

map-interact.js

map-interact.js

53 ms

js

js

63 ms

leaflet.css

leaflet.css

28 ms

leaflet.js

leaflet.js

29 ms

css

css

33 ms

async-ads.js

async-ads.js

186 ms

loader.js

loader.js

178 ms

bg.png

bg.png

113 ms

analytics.js

analytics.js

163 ms

TZ-HomePageYosemiteHalfDome1100.jpg

TZ-HomePageYosemiteHalfDome1100.jpg

144 ms

Half_Dome-tz-1000.jpg

Half_Dome-tz-1000.jpg

140 ms

bigs-Crater-Lake-from-top-of-Watchmans-Peak-beautiful-landscape-Oregon-wide-angle-Small-300x162.jpg

bigs-Crater-Lake-from-top-of-Watchmans-Peak-beautiful-landscape-Oregon-wide-angle-Small-300x162.jpg

138 ms

Base-topo-how-to-read-topographic-maps-crop-300x220.jpg

Base-topo-how-to-read-topographic-maps-crop-300x220.jpg

139 ms

USGS-Topo-Map-Legend-Page-thumb-300x179.jpg

USGS-Topo-Map-Legend-Page-thumb-300x179.jpg

140 ms

Magnetic-North-Declination-screenshot-noaa.gov_-300x207.jpg

Magnetic-North-Declination-screenshot-noaa.gov_-300x207.jpg

168 ms

MtWhitneyCAsummitTopoMapCoordinates-300x191.jpg

MtWhitneyCAsummitTopoMapCoordinates-300x191.jpg

167 ms

JTUHjIg1_i6t8kCHKm4532VJOt5-QNFgpCtr6Hw5aX8.ttf

JTUHjIg1_i6t8kCHKm4532VJOt5-QNFgpCtr6Hw5aX8.ttf

169 ms

JTUHjIg1_i6t8kCHKm4532VJOt5-QNFgpCuM73w5aX8.ttf

JTUHjIg1_i6t8kCHKm4532VJOt5-QNFgpCuM73w5aX8.ttf

198 ms

slotcar_library.js

slotcar_library.js

182 ms

show_ads_impl.js

show_ads_impl.js

347 ms

bx_loader.gif

bx_loader.gif

43 ms

fontawesome-webfont.woff

fontawesome-webfont.woff

38 ms

main.js

main.js

29 ms

collect

collect

42 ms

collect

collect

20 ms

js

js

86 ms

impl.20240506-6-RELEASE.es5.js

impl.20240506-6-RELEASE.es5.js

17 ms

ga-audiences

ga-audiences

69 ms

sync

sync

21 ms

in.php

in.php

153 ms

zrt_lookup.html

zrt_lookup.html

34 ms

ads

ads

561 ms

ads

ads

442 ms

Accessibility Review

topozone.com accessibility score

82

Accessibility Issues

Contrast

These are opportunities to improve the legibility of your content.

Impact

Issue

High

Background and foreground colors do not have a sufficient contrast ratio.

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

Links do not have a discernible name

Tables and lists

These are opportunities to improve the experience of reading tabular or list data using assistive technology, like a screen reader.

Impact

Issue

High

Lists do not contain only <li> elements and script supporting elements (<script> and <template>).

Best practices

These items highlight common accessibility best practices.

Impact

Issue

High

[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.

Best Practices

topozone.com best practices score

92

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

General

Impact

Issue

Low

Detected JavaScript libraries

High

Page has valid source maps

SEO Factors

topozone.com SEO score

88

Search Engine Optimization Advices

Crawling and Indexing

To appear in search results, crawlers need access to your app.

Impact

Issue

High

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

High

Document uses legible font sizes

High

Tap targets are not sized appropriately

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 Topozone.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 Topozone.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

topozone.com

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