1.6 sec in total
197 ms
1.2 sec
144 ms
Click here to check amazing Sumatra PDF Reader content for China. Otherwise, check out these important facts you probably never knew about sumatrapdfreader.org
Sumatra PDF reader and viewer for Windows
Visit sumatrapdfreader.orgWe analyzed Sumatrapdfreader.org page load time and found that the first response time was 197 ms and then it took 1.4 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 25% of websites can load faster.
sumatrapdfreader.org performance score
name
value
score
weighting
Value3.1 s
46/100
10%
Value4.5 s
37/100
25%
Value3.1 s
93/100
10%
Value1,050 ms
25/100
30%
Value0.433
22/100
15%
Value8.4 s
39/100
10%
197 ms
204 ms
87 ms
81 ms
9 ms
Our browser made a total of 20 requests to load all elements on the main page. We found that 30% of them (6 requests) were addressed to the original Sumatrapdfreader.org, 20% (4 requests) were made to Pagead2.googlesyndication.com and 20% (4 requests) were made to Tpc.googlesyndication.com. The less responsive or slowest element that took the longest time to load (318 ms) belongs to the original domain Sumatrapdfreader.org.
Page size can be reduced by 51.4 kB (23%)
219.4 kB
168.0 kB
In fact, the total size of Sumatrapdfreader.org main page is 219.4 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. 30% of websites need less resources to load. Javascripts take 134.6 kB which makes up the majority of the site volume.
Potential reduce by 4.4 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 975 B, which is 14% 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 4.4 kB or 64% of the original size.
Potential reduce by 0 B
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. Sumatra PDF Reader images are well optimized though.
Potential reduce by 47.0 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 47.0 kB or 35% of the original size.
Number of requests can be reduced by 7 (41%)
17
10
The browser has sent 17 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Sumatra PDF Reader. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 8 to 1 for JavaScripts and as a result speed up the page load time.
sumatrapdfreader.org
197 ms
www.sumatrapdfreader.org
204 ms
free-pdf-reader.html
87 ms
sumatra.css
81 ms
adsbygoogle.js
9 ms
sumatra.js
218 ms
sum-shot-03-small.png
318 ms
ca-pub-8305375090017172.js
58 ms
zrt_lookup.html
84 ms
show_ads_impl.js
83 ms
analytics.js
23 ms
collect
72 ms
ads
259 ms
osd.js
9 ms
13161407013849514545
38 ms
abg.js
43 ms
m_js_controller.js
55 ms
googlelogo_color_112x36dp.png
93 ms
s
32 ms
x_button_blue2.png
34 ms
sumatrapdfreader.org accessibility score
Contrast
These are opportunities to improve the legibility of your content.
Impact
Issue
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
<frame> or <iframe> elements do not have a title
Image elements do not have [alt] attributes
Links do not have a discernible name
Internationalization and localization
These are opportunities to improve the interpretation of your content by users in different locales.
Impact
Issue
<html> element does not have a [lang] attribute
sumatrapdfreader.org best practices score
Trust and Safety
Impact
Issue
Does not use HTTPS
Ensure CSP is effective against XSS attacks
User Experience
Impact
Issue
Displays images with incorrect aspect ratio
Serves images with low resolution
sumatrapdfreader.org SEO score
Content Best Practices
Format your HTML in a way that enables crawlers to better understand your app’s content.
Impact
Issue
Image elements do not have [alt] attributes
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
EN
EN
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Sumatrapdfreader.org 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 Sumatrapdfreader.org 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.
sumatrapdfreader.org
Open Graph description is not detected on the main page of Sumatra PDF Reader. 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: