42.8 sec in total
391 ms
20.7 sec
21.8 sec
Welcome to freetechbooks.com homepage info - get ready to check Free Tech Books best content for United States right away, or after learning these important things about freetechbooks.com
This site lists free online computer science, engineering and programming books, textbooks and lecture notes, all of which are legally and freely available.
Visit freetechbooks.comWe analyzed Freetechbooks.com page load time and found that the first response time was 391 ms and then it took 42.4 sec to load all DOM resources and completely render a web page. This is an excellent result, as only a small number of websites can load faster.
freetechbooks.com performance score
name
value
score
weighting
Value4.4 s
16/100
10%
Value7.7 s
3/100
25%
Value6.0 s
46/100
10%
Value240 ms
85/100
30%
Value0.043
99/100
15%
Value7.3 s
50/100
10%
391 ms
769 ms
436 ms
344 ms
688 ms
Our browser made a total of 78 requests to load all elements on the main page. We found that 35% of them (27 requests) were addressed to the original Freetechbooks.com, 22% (17 requests) were made to A.tribalfusion.com and 10% (8 requests) were made to Google.com. The less responsive or slowest element that took the longest time to load (6.3 sec) relates to the external source Dsum-sec.casalemedia.com.
Page size can be reduced by 506.7 kB (31%)
1.7 MB
1.1 MB
In fact, the total size of Freetechbooks.com main page is 1.7 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 943.8 kB which makes up the majority of the site volume.
Potential reduce by 88.3 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 11.1 kB, which is 11% 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 88.3 kB or 84% of the original size.
Potential reduce by 19.8 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. Free Tech Books images are well optimized though.
Potential reduce by 248.1 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. It is highly recommended that all JavaScript files should be compressed and minified as it can save up to 248.1 kB or 59% of the original size.
Potential reduce by 150.4 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. Freetechbooks.com needs all CSS files to be minified and compressed as it can save up to 150.4 kB or 82% of the original size.
Number of requests can be reduced by 32 (48%)
67
35
The browser has sent 67 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Free Tech Books. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 16 to 1 for JavaScripts and from 8 to 1 for CSS and as a result speed up the page load time.
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freetechbooks.com 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
Links do not have a discernible name
freetechbooks.com 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
Browser errors were logged to the console
Issues were logged in the Issues panel in Chrome Devtools
freetechbooks.com SEO score
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 Freetechbooks.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 Freetechbooks.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.
freetechbooks.com
Open Graph data is detected on the main page of Free Tech Books. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: