423 ms in total
95 ms
172 ms
156 ms
Click here to check amazing FFTW content for United States. Otherwise, check out these important facts you probably never knew about fftw.org
A fast, free C FFT library; includes real-complex, multidimensional, and parallel transforms. Benchmarked against many other FFTs.
Visit fftw.orgWe analyzed Fftw.org page load time and found that the first response time was 95 ms and then it took 328 ms to load all DOM resources and completely render a web page. This is an excellent result, as only 5% of websites can load faster.
fftw.org performance score
name
value
score
weighting
Value0.8 s
100/100
10%
Value0.9 s
100/100
25%
Value0.8 s
100/100
10%
Value0 ms
100/100
30%
Value0
100/100
15%
Value0.8 s
100/100
10%
95 ms
22 ms
63 ms
43 ms
Our browser made a total of 4 requests to load all elements on the main page. We found that all of those requests were addressed to Fftw.org and no external sources were called. The less responsive or slowest element that took the longest time to load (95 ms) belongs to the original domain Fftw.org.
Page size can be reduced by 9.0 kB (59%)
15.1 kB
6.1 kB
In fact, the total size of Fftw.org main page is 15.1 kB. This result falls within a vast category (top 1 000 000) of heavyweight, probably not optimized, and thus slow loading web pages. Only 5% of websites need less resources to load. HTML takes 13.8 kB which makes up the majority of the site volume.
Potential reduce by 8.5 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 8.5 kB or 62% of the original size.
Potential reduce by 73 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. FFTW images are well optimized though.
Potential reduce by 420 B
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. Fftw.org needs all CSS files to be minified and compressed as it can save up to 420 B or 70% of the original size.
We found no issues to fix!
3
3
The browser has sent 3 CSS, Javascripts, AJAX and image requests in order to completely render the main page of FFTW. According to our analytics all requests are already optimized.
fftw.org
95 ms
fftw.css
22 ms
fftw-logo-med.gif
63 ms
rss.png
43 ms
fftw.org accessibility score
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
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
Image elements do not have [alt] attributes
fftw.org best practices score
Trust and Safety
Impact
Issue
Does not use HTTPS
Ensure CSP is effective against XSS attacks
User Experience
Impact
Issue
Serves images with low resolution
fftw.org SEO score
Content Best Practices
Format your HTML in a way that enables crawlers to better understand your app’s content.
Impact
Issue
Links do not have descriptive text
Image elements do not have [alt] attributes
EN
N/A
N/A
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Fftw.org can be misinterpreted by Google and other search engines. Our service has detected that English is used on the page, and neither this language nor any other was claimed in <html> or <meta> tags. Our system also found out that Fftw.org main page’s claimed encoding is . Changing it to UTF-8 can be a good choice, as this format is commonly used for encoding all over the web and thus their visitors won’t have any troubles with symbol transcription or reading.
fftw.org
Open Graph description is not detected on the main page of FFTW. 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: