fftw.org Website Information
Daily Unique Visits: 35,611
Daily Page Views: 213,666
Income Per Day: $427
Estimated Value: $307,440
fftw.org is registered under .ORG top-level domain. Please check other sites in .ORG zone.
No name server records were found.
and is probably hosted by A2HOSTING - A2 Hosting, Inc., US. See the full list of other websites hosted by A2HOSTING - A2 Hosting, Inc., US.
The highest website fftw.org position in Alexa rank database was 20916 and the lowest rank position was 997047. Current position of fftw.org in Alexa rank database is 40275.
Desktop speed score of fftw.org (92/100) is better than the results of 90.97% of other sites and shows that the page is performing great on desktop computers.
Mobile usability score of fftw.org (66/100) is better than the results of 14.96% of other sites and means that the page is not mobile-friendly.
Mobile speed score of fftw.org (87/100) is better than the results of 91.36% of other sites and shows that the landing page performance on mobile devices is excellent.
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fftw.org Alexa Rank
The traffic rank is based on three months of aggregated historical traffic data from millions of Alexa Toolbar users and is a combined measure of page views and users.
fftw.org whois
WHOIS gives you the ability to lookup any generic domains to find out the registered domain holder. WHOIS database are provided for information purposes only. It allows the public to check whether a specific domain name is still available or not and to obtain information related to the registration records of existing domain names.
Registry Domain ID: D7078344-LROR
Registrar WHOIS Server: whois.dotEarth.com
Registrar URL: http://www.dotEarth.com
Updated Date: 2019-12-18T13:18:12Z
Creation Date: 1999-06-07T19:29:50Z
Registry Expiry Date: 2029-06-07T19:30:27Z
Registrar Registration Expiration Date:
Registrar: Domain Registration Services, Inc. dba dotEarth.com
Registrar IANA ID: 64
Registrar Abuse Contact Email: abuse@dotEarth.com
Registrar Abuse Contact Phone: +1.8883399001
Reseller:
Domain Status: clientTransferProhibited https://icann.org/epp#clientTransferProhibited
Registrant Organization: FFTW
Registrant State/Province: MA
Registrant Country: US
Name Server: PUCK.NETHER.NET
Name Server: NS2.AFRAID.ORG
Name Server: NS.FFTW.ORG
DNSSEC: unsigned
URL of the ICANN Whois Inaccuracy Complaint Form https://www.icann.org/wicf/)
>>> Last update of WHOIS database: 2021-11-24T09:28:46Z
fftw.org server information
Servers Location
fftw.org desktop page speed rank
Last tested: 2019-06-19
fftw.org Desktop Speed Test Quick Summary
priority - 3Optimize images
Properly formatting and compressing images can save many bytes of data.
Optimize the following images to reduce their size by 31.3KiB (77% reduction).
Compressing http://fftw.org/rss.png could save 110B (15% reduction).
priority - 2Eliminate render-blocking JavaScript and CSS in above-the-fold content
Your page has 1 blocking CSS resources. This causes a delay in rendering your page.
Optimize CSS Delivery of the following:
priority - 2Leverage browser caching
Setting an expiry date or a maximum age in the HTTP headers for static resources instructs the browser to load previously downloaded resources from local disk rather than over the network.
Leverage browser caching for the following cacheable resources:
http://fftw.org/fftw.css (expiration not specified)
http://fftw.org/rss.png (expiration not specified)
priority - 0Enable compression
Compressing resources with gzip or deflate can reduce the number of bytes sent over the network.
Enable compression for the following resources to reduce their transfer size by 296B (50% reduction).
priority - 0Minify CSS
Compacting CSS code can save many bytes of data and speed up download and parse times.
Minify CSS for the following resources to reduce their size by 207B (35% reduction).
fftw.org Desktop Resource Breakdown
| Total Resources | 4 |
| Number of Hosts | 1 |
| Static Resources | 3 |
| CSS Resources | 1 |
fftw.org mobile page speed rank
Last tested: 2017-05-17
fftw.org Mobile Speed Test Quick Summary
priority - 8Eliminate render-blocking JavaScript and CSS in above-the-fold content
Your page has 1 blocking CSS resources. This causes a delay in rendering your page.
Optimize CSS Delivery of the following:
priority - 3Optimize images
Properly formatting and compressing images can save many bytes of data.
Optimize the following images to reduce their size by 31.2KiB (78% reduction).
priority - 2Leverage browser caching
Setting an expiry date or a maximum age in the HTTP headers for static resources instructs the browser to load previously downloaded resources from local disk rather than over the network.
Leverage browser caching for the following cacheable resources:
http://fftw.org/fftw.css (expiration not specified)
http://fftw.org/rss.png (expiration not specified)
fftw.org Mobile Resource Breakdown
| Total Resources | 4 |
| Number of Hosts | 1 |
| Static Resources | 3 |
| CSS Resources | 1 |
fftw.org mobile page usability
Last tested: 2017-05-17
fftw.org Mobile Usability Test Quick Summary
priority - 37Use legible font sizes
The following text on your page renders in a way that may be difficult for some of your visitors to read. Use legible font sizes to provide a better user experience.
The following text fragments have a small font size. Increase the font size to make them more legible.
1999 J. H. Wil…rical Software and 35 others render only 6 pixels tall (16 CSS pixels).FFTW renders only 6 pixels tall (16 CSS pixels).is a C subrout…FFTW, which is and 16 others render only 6 pixels tall (16 CSS pixels)., which is awa…in his memory. and 35 others render only 6 pixels tall (16 CSS pixels).Fastest Fourie…rm in the West and 3 others render only 6 pixels tall (16 CSS pixels).portable renders only 6 pixels tall (16 CSS pixels).Type-IV DCT, D…tic operations and 30 others render only 6 pixels tall (16 CSS pixels).transforms. (T…ponent array.) and 53 others render only 6 pixels tall (16 CSS pixels).multi-dimensional and 8 others render only 6 pixels tall (16 CSS pixels).man renders only 6 pixels tall (16 CSS pixels).IEEE Trans. Signal Processing and 2 others render only 6 pixels tall (16 CSS pixels).[Link is to ou…ticle; also in and 2 others render only 5 pixels tall (13 CSS pixels).Postscript and 1 others render only 5 pixels tall (13 CSS pixels).priority - 10Configure the viewport
Your page does not have a viewport specified. This causes mobile devices to render your page as it would appear on a desktop browser, scaling it down to fit on a mobile screen. Configure a viewport to allow your page to render properly on all devices.
priority - 5Size tap targets appropriately
Some of the links/buttons on your webpage may be too small for a user to easily tap on a touchscreen. Consider making these tap targets larger to provide a better user experience.
The following tap targets are close to other nearby tap targets and may need additional spacing around them.
<a href="http://freecod…/releases.atom"></a> and 8 others are close to other tap targets.<a href="http://www.fft…llel-fftw.html">Parallel transforms</a> and 20 others are close to other tap targets.<a href="fftw-paper.ps.gz">Postscript</a> and 1 others are close to other tap targets.fftw.org HTML validation
Errors
Obsolete doctype. Expected “<!DOCTYPE html>”.
"...<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0//EN"> <HTML..."
Bad value “Bookmark” for attribute “rel” on element “link”: The string “Bookmark” is not a registered keyword.
"...e</TITLE> <LINK rel="Bookmark" title="FFTW Home Page" href="index.html"> <LINK..."
The “text” attribute on the “body” element is obsolete. Use CSS instead.
"...> </HEAD> <BODY TEXT="#000000" BGCOLOR="#FFFFFF"> <!-- ..."
The “bgcolor” attribute on the “body” element is obsolete. Use CSS instead.
"...> </HEAD> <BODY TEXT="#000000" BGCOLOR="#FFFFFF"> <!-- ..."
The “align” attribute on the “p” element is obsolete. Use CSS instead.
"...NTER> --> <p align=center><img s..."
An “img” element must have an “alt” attribute, except under certain conditions. For details, consult guidance on providing text alternatives for images.
"...gn=center><img src="fftw-logo-med.gif" width="330" height="107"> <div..."
The “align” attribute on the “div” element is obsolete. Use CSS instead.
"...t="107"> <div class="navbar" align=center> <TABL..."
The “cellspacing” attribute on the “table” element is obsolete. Use CSS instead.
"...n=center> <TABLE CELLSPACING=20 CELLPADDING=1> <TR> ..."
The “cellpadding” attribute on the “table” element is obsolete. Use CSS instead.
"...n=center> <TABLE CELLSPACING=20 CELLPADDING=1> <TR> ..."
The “align” attribute on the “img” element is obsolete. Use CSS instead.
"...for FFTW"><img alt="RSS" width="21" height="20" align="top" src="rss.png" /></a></..." Line: 74 Column: 165 - 230
"...for FFTW"><img alt="RSS" width="21" height="20" align="top" src="rss.png" /></a>)...."
Warnings
The “name” attribute is obsolete. Consider putting an “id” attribute on the nearest container instead.
"...>). <H2><A NAME="features">Featur..." Line: 147 Column: 5 - 28
"...>). <H2><A NAME="documentation">Docume..." Line: 285 Column: 5 - 23
"...eds. <H2><A NAME="feedback">Feedba..."
This document appears to be written in English. Consider adding “lang="en"” (or variant) to the “html” start tag.
"... 4.0//EN"> <HTML><HEAD>..."
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fftw.org Ping
Ping is a computer network administration software utility used to test the reachability of a host on an Internet Protocol (IP) network. It measures the round-trip time for messages sent from the originating host to a destination computer that are echoed back to the source.
fftw.org TRACEROUTE
Traceroute is a computer network diagnostic tool for displaying the route (path) and measuring transit delays of packets across an Internet Protocol (IP) network. The history of the route is recorded as the round-trip times of the packets received from each successive host (remote node) in the route (path); the sum of the mean times in each hop is a measure of the total time spent to establish the connection. Traceroute proceeds unless all (three) sent packets are lost more than twice, then the connection is lost and the route cannot be evaluated.