Website Performance Report : http://Electromagnetism.me.uk

Follow the recommendations of this report to improve your website performance

Examined on : 2018-09-10 22:46:56


Page Title

Page Title : Basics of Electromagnetism and special relativity


Your page title does not exceed 60 characters. It's fine.

Knowledge Base
A title tag is an HTML element that specifies the title of a web page. Title tags are displayed on search engine results pages (SERPs) as the clickable headline for a given result, and are important for usability, SEO, and social sharing. The title tag of a web page is meant to be an accurate and concise description of the content of a page. Search engines typically display the first 50-60 characters of a title tag. If you keep your titles under 60 characters, our research suggests that you can expect about 90% of your titles to display properly. There is no exact character limit, because characters can vary in width and most display titles max out at 600 pixels.
Learn more

Meta Description

Meta Description : Basics of electromagnetism and special relativity, source, origin of magnetism, magnetic field, forces, relativistic electromagnetism, magnetism and special relativity, Edward M. Purcell Electricity and Magnetism in SI units, relativistic mass, relativistic energy.


Your meta description exceeds 150 characters. It's not good.

Knowledge Base
Meta descriptions are HTML attributes that provide concise explanations of the contents of web pages. Meta descriptions are commonly used on search engine result pages (SERPs) to display preview snippets for a given page. While not important to search engine rankings, they are extremely important in gaining user click-through from SERPs. These short paragraphs are a webmaster’s opportunity to advertise content to searchers and to let them know exactly whether the given page contains the information they're looking for. The meta description should employ the keywords intelligently, but also create a compelling description that a searcher will want to click. Direct relevance to the page and uniqueness between each page’s meta description is key. The description should optimally be between 150-160 characters.

Single Keywords

Keyword Occurrence Density Possible Spam
field 27 3.082 % No
charge 26 2.968 % No
frame 12 1.37 % No
test 12 1.37 % No
wire 9 1.027 % No
electrons 8 0.913 % No
direction 8 0.913 % No
moving 7 0.799 % No
electron 6 0.685 % No
e2 6 0.685 % No
density 6 0.685 % No
ions 5 0.571 % No
linear 5 0.571 % No
electric 5 0.571 % No
region 5 0.571 % No
v0 4 0.457 % No
e1 4 0.457 % No
positive 4 0.457 % No
lab 4 0.457 % No
line 4 0.457 % No

Two Word Keywords

Keyword Occurrence Density Possible Spam
in the 19 2.169 % No
test charge 12 1.37 % No
field of 10 1.142 % No
the test 10 1.142 % No
of the 9 1.027 % No
the field 9 1.027 % No
to the 9 1.027 % No
the direction 6 0.685 % No
on the 6 0.685 % No
charge frame 6 0.685 % No
a charge 5 0.571 % No
the wire 5 0.571 % No
linear density 5 0.571 % No
of a 5 0.571 % No
lab frame 4 0.457 % No
direction of 4 0.457 % No
with the 4 0.457 % No
charge in 4 0.457 % No
electric field 4 0.457 % No
the lab 4 0.457 % No

Three Word Keywords

Keyword Occurrence Density Possible Spam
the test charge 10 1.142 % No
test charge frame 6 0.685 % No
in the test 6 0.685 % No
field of a 5 0.571 % No
the field of 5 0.571 % No
in the direction 4 0.457 % No
of a charge 4 0.457 % No
linear density of 4 0.457 % No
the lab frame 4 0.457 % No
charge in the 4 0.457 % No
shown separated for 3 0.342 % No
separated for clarity 3 0.342 % No
are shown separated 3 0.342 % No
electrons are shown 3 0.342 % No
field of electron 3 0.342 % No
e1 and e2 3 0.342 % No
the direction of 3 0.342 % No
CurrentCarrying Wire positive 3 0.342 % No
of the field 3 0.342 % No
Wire positive ions 3 0.342 % No

Four Word Keywords

Keyword Occurrence Density Possible Spam
in the test charge 6 0.685 % No
the test charge frame 6 0.685 % No
field of a charge 4 0.457 % No
electrons are shown separated 3 0.342 % No
shown separated for clarity 3 0.342 % No
and electrons are shown 3 0.342 % No
are shown separated for 3 0.342 % No
CurrentCarrying Wire positive ions 3 0.342 % No
the field of electron 3 0.342 % No
ions and electrons are 3 0.342 % No
Wire positive ions and 3 0.342 % No
positive ions and electrons 3 0.342 % No
linear density of negative 2 0.228 % No
field at a distance 2 0.228 % No
the field at a 2 0.228 % No
charge in the test 2 0.228 % No
density of negative charge 2 0.228 % No
negative charge in the 2 0.228 % No
the velocity that the 2 0.228 % No
had while emitting that 2 0.228 % No

Total Words

Total Words : 876

Knowledge Base
SEO keywords are the key words and phrases in your web content that make it possible for people to find your site via search engines. A website that is well optimized for search engines speaks the same language as its potential visitor base with keywords for SEO that help connect searchers to your site. Keywords are one of the main elements of SEO basics.

HTML Headings

H1(1)

  • Basics of Electromagnetism and special relativity

H2(1)

  • Patryk Kawecki

H3(0)

H4(0)

H5(0)

H6(0)

Knowledge Base
The heading structure of your pages is one of the very important aspects of on-page SEO. It defines which parts of your content are important, and how they’re interconnected.

The most important heading on the page should be the H1.
There is usually only one H1 on any page.
Sub-headings should be H2’s, sub-sub-headings should be H3’s, etc.
Each heading should contain valuable keywords, if not, it’s a wasted heading.
In longer pieces of content, a heading is what helps a reader skip to the parts that they find interesting.

Internal Vs. External Links

Total Internal Links? 16
Total External Links? 8

Internal Links

  • index.htm
  • main.htm
  • index.htm
  • magnetic-field.htm
  • theoryofem.htm
  • perpendicular.htm
  • elmaginduct.htm
  • synchrotron-radiation.htm
  • velocity-addition.htm
  • matter-wave.htm
  • relativistic-mass.htm
  • relativistic-momentum.htm
  • relativistic-force.htm
  • relativistic-energy.htm
  • mass-deficit.htm
  • time-dilation.htm

External Links

  • http://phet.colorado.edu/en/simulation/radiating-charge
  • http://isites.harvard.edu/fs/docs/icb.topic1214926.files/Purcell-appendix-B.pdf
  • feynman
  • http://en.wikipedia.org/wiki/Time_dilation
  • http://en.wikipedia.org/wiki/Twin_paradox
  • http://en.wikipedia.org/wiki/Hafele%E2%80%93Keating_experiment
  • http://youtu.be/gdRmCqylsME
  • http://spaceflightnow.com/station/sts111/020529einstein/

NoIndex , NoFollow, DoDollow Links

Total NoIndex Links 0
Total NoFollow Links 0
Total DoFollow Links 24
NoIndex Enabled by Meta Robot? No
NoFollow Enabled by Meta Robot? No

NoIndex Links

NoFollow Links



Knowledge Base

NoIndex : The noindex directive is an often used value in a meta tag that can be added to the HTML source code of a webpage to suggest to search engines (most notably Google) to not include that particular page in its list of search results.

By default, a webpage is set to “index.” You should add a <meta name="robots" content="noindex" /> directive to a webpage in the <head> section of the HTML if you do not want search engines to crawl a given page and include it in the SERPs (Search Engine Results Pages).

DoFollow & NoFollow : The nofollow directive is an often used value in a meta tag that can be added to the HTML source code of a webpage to suggest to search engines not to pass link equity through any links on a given webpage.

By default, links are set to “follow.” You would set a link to “nofollow” in this way: <a href="http://www.example.com/" rel="nofollow">Anchor Text</a> if you want to suggest to Google that the hyperlink should not pass any link equity/SEO value to the link target.

Learn more

SEO Friendly Links

Links of your site are SEO friendly.

Knowledge Base
A URL is human-readable text that was designed to replace the numbers (IP addresses) that computers use to communicate with servers. They also identify the file structure on the given website.

URLs should:
1) Use hyphens to separate words when necessary for readability. They should not use underscores, spaces, or any other characters to separate words. Overuse of hyphens in URLs can be seen as spammy, so it’s best to use caution and limit hyphen use in URLs when possible.
2) Never be longer than 2,048 characters; otherwise Internet Explorer will not be able to load the page.
3) Avoid the use of parameters, if possible. If parameters need to be used, they should be limited to two or less.
Learn more

Favicon

Your website does not have a favicon.

Learn more

Image 'alt' Test

Your website has 31 images without alt text.

Images Without alt

  • purcelleq11.gif
  • purcelleq12.gif
  • purcelleq13.gif
  • purcelleq14.gif
  • purcelleq15.gif
  • purcelleq16.gif
  • purcelleq17.gif
  • purcelleq18.gif
  • purcelleq19.gif
  • purcelleq20.gif
  • purcelleq21.gif
  • purcelleq22.gif
  • purcelleq23.gif
  • perpend11.gif
  • perpend12.gif
  • uvectorx.gif
  • uvectorx.gif
  • vxB.gif
  • uvectorz.gif
  • perpend13.gif
  • velocitytime.gif
  • chargeradeq1.gif
  • chargeradeq2.gif
  • chargeradeq3.gif
  • chargeradeq4.gif
  • chargeradeq5.gif
  • chargeradeq6.gif
  • chargeradeq7.gif
  • timedileq1.gif
  • timedileq2.gif
  • timedileq3.gif


Knowledge Base
Images can be used to bring in organic traffic via search engine image results. But in order for this to happen, they need to be optimized accordingly. The required alt attribute specifies an alternate text for an image. For any image on your site, the alt tag should describe what’s on it.
Learn more

DOC Type

DOC Type :


Page does not have doc type

Knowledge Base
The doctype document is not having any influence on your SEO job. However, make sure to add the tag on all pages. Without the doctype declaration you won’t be able to check the validity of your documents.

Deprecated HTML Tag

Your website has 11 depreciated HTML tags.

Deprecated HTML Tags

  • applet : 0
  • basefont : 0
  • center : 11
  • dir : 0
  • font : 0
  • isindex : 0
  • menu : 0
  • s : 0
  • strike : 0
  • u : 0


Knowledge Base
Older HTML tags and attributes that have been superseded by other more functional or flexible alternatives (whether as HTML or as CSS ) are declared as deprecated in HTML4 by the W3C - the consortium that sets the HTML standards. Browsers should continue to support deprecated tags and attributes, but eventually these tags are likely to become obsolete and so future support cannot be guaranteed.

HTML Page Size

HTML Page Size : 21 KB


HTML page size is <= 100KB

Knowledge Base
Huge pages (over 100 K – which is the standard established long ago) can account for a lot of user challenges and decrease the bot’s crawl rate and depth: note that the bot works on a budget – if it spends too much time crawling your huge images or PDFs, there will be no time left to visit your other pages.

How to reduce your page size:
1) Move your CSS and JS code to external files.
2) Use SOC (Source Ordered Content) to ensure that text content is the first to load: i.e. text content is on top of the source code (this will ensure that both bots and people have something to read waiting for the all the page elements to load).
3) Reduce or compress your images and media files
Learn more

GZIP Compression

GZIP Compressed Size : 6 KB


GZIP compression is enabled.

Knowledge Base
GZIP is a generic compressor that can be applied to any stream of bytes: under the hood it remembers some of the previously seen content and attempts to find and replace duplicate data fragments in an efficient way - for the curious, great low-level explanation of GZIP. However, in practice, GZIP performs best on text-based content, often achieving compression rates of as high as 70-90% for larger files, whereas running GZIP on assets that are already compressed via alternative algorithms (e.g. most image formats) yields little to no improvement. It is recommended that your GZIP compressed page size should be <=33 KB

IP & DNS Report

IPv4 85.128.220.21
IPv6 Not Compatiable
DNS Report
SLHostClassTTLTypePRITargetIP
1Electromagnetism.me.ukIN3599A85.128.220.21
2Electromagnetism.me.ukIN3600NSns3.nazwa.pl
3Electromagnetism.me.ukIN3600NSns1.nazwa.pl
4Electromagnetism.me.ukIN3600NSns2.nazwa.pl
5Electromagnetism.me.ukIN3600MX10Electromagnetism.me.uk

IP Canonicalization Test

Site failed IP canonicalization test.

Knowledge Base
When a search engine spider indexes a website, it gathers as much information about the website as possible. This may also include the IP address. Why is that a problem? For starters, if you have multiple domain names under one IP address, the search engine could possibly label one the websites as duplicate content. This may not always happen, but it is important to remember that search engines are primarily composed of robots and may overlook simple mistakes that can easily be detected by an average human.
Learn more

URL Canonicalization Test

Site failed URL canonicalization test.

Knowledge Base
Rel=canonical is a way to specify the preferred version of resources with duplicate content. It will not prevent your duplicates from being crawled and it will not prevent search engines from indexing your content. Instead it serves as a suggestion to search engines on which content it should prefer in the search results in case there are two or more documents that are identical or very similar.
Learn more

Plain Text Email Test

Site passed plain text email test. No plain text email found.

Knowledge Base
Any e-mail address posted in public is likely to be automatically collected by computer software used by bulk emailers (a process known as e-mail address harvesting). A spam harvester can read through the pages in your site and extract plaintext email addresses which are then added to bulk marketing databases (resulting in more inbox spam). There are several methods for email obfuscation.
Learn more

cURL Response

urlhttp://Electromagnetism.me.uk/content typetext/html
http code200header size265
request size147filetime-1
ssl verify result0redirect count0
total time0.120916namelookup time0.060439
connect time0.079845pretransfer time0.0799
size upload0size download21548
speed download178206speed upload0
download content length21548upload content length0
starttransfer time0.101471redirect time0
redirect urlprimary ip85.128.220.21
certinfoprimary port80
local ip89.110.144.73local port56788

Mobile Friendly Check


Mobile Friendly : No

Score : 66

Localized Rule Name Rule Impact
Mobile viewport not set 10
Text too small to read 38.268729030498
Uses incompatible plugins 0
Content wider than screen 3
Links too close together 1.3020833333333
CMS:
Locale: en_US
Roboted Resources: 0
Transient Fetch Failure Resources: 0

Google Page Speed Insight (Mobile)

Page Speed

Usability Score


Page Statistics


numberResources50numberHosts1
totalRequestBytes3153numberStaticResources49
htmlResponseBytes21815overTheWireResponseBytes366514
cssResponseBytes1873imageResponseBytes359450
numberCssResources1


Avoid App Install Interstitials That Hide Content

Your page does not appear to have any app install interstitials that hide a significant amount of content. Learn more about the importance of avoiding the use of app install interstitials.

Avoid Plugins

Your page does not appear to use plugins, which would prevent content from being usable on many platforms. Learn more about the importance of avoiding plugins.

Configure 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.
Configure a viewport for this page.

Size Content to Viewport

The page content is too wide for the viewport, forcing the user to scroll horizontally.
Size the page content to the viewport to provide a better user experience.

The page content is 1,008 CSS pixels wide, but the viewport is only 980 CSS pixels wide. The following elements fall outside the viewport:

  • <p class="lang">Electromagneti…ektromagnetyzm</p>
  • <h1 id="title">Basics of Elec…ial relativity</h1>
  • <ul class="menu">Home</ul>
  • <div class="post">Relativistic e…t of the page.</div>
  • <div class="post">Radiation by a…ystem - iSites</div>
  • <div class="post">Synchrotron ra…tron radiation</div>
  • <div class="post">Velocity addit…dition formula</div>
  • <div class="post">Matter Waves d…e Matter Waves</div>
  • <div class="post">Double-slit ex…lit experiment</div>
  • <div class="post">Relativistic m…ativistic mass</div>
  • <div class="post">Relativistic m…istic momentum</div>
  • <div class="post">Relativistic f…tivistic force</div>
  • <div class="post">Relativistic e…ivistic energy</div>
  • <div class="post">Mass deficit…931.466 MeV/c2</div>
  • <div class="post">Time dilation…e Modern tests</div>
  • <h2>Patryk Kawecki</h2>
  • <p>Copyright © Pa…ecki 2002-2016</p>

Size 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.

  • The tap target <a href="http://phet.co…diating-charge">Radiating Char…VE SIMULATIONS</a> is close to 1 other tap targets
  • The tap target <a href="http://en.wiki…ing_experiment">Hafele-Keating…nt - Wikipedia</a> is close to 2 other tap targets

Use 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.

  • Electromagnetism renders only 1 pixels tall (6 CSS pixels)
  • EN | PL renders only 6 pixels tall (16 CSS pixels)
  • Home renders only 6 pixels tall (16 CSS pixels)
  • Interaction be…e to the wire. renders only 15 pixels tall (6 CSS pixels)
  • Alternating ma…etic induction renders only 21 pixels tall (6 CSS pixels)
  • Now we calcula…density there: renders only 21 pixels tall (6 CSS pixels)
  • Current-Carryi…ed for clarity renders only 2 pixels tall (6 CSS pixels)
  • 0 renders only 5 pixels tall (13 CSS pixels)
  • In physics, th…contradiction. renders only 51 pixels tall (6 CSS pixels)
  • rad renders only 55 pixels tall (5 CSS pixels)
  • is energy/time…ms and nuclei. renders only 29 pixels tall (6 CSS pixels)
  • The velocity versus time graph renders only 1 pixels tall (6 CSS pixels)
  • Thus, from Pyt…m we can write renders only 8 pixels tall (6 CSS pixels)
  • Beta particle mass renders only 2 pixels tall (6 CSS pixels)
  • Mass (MeV/c renders only 10 pixels tall (6 CSS pixels)
  • 2 renders only 1 pixels tall (5 CSS pixels)
  • electron renders only 10 pixels tall (6 CSS pixels)
  • - renders only 2 pixels tall (5 CSS pixels)
  • n renders only 6 pixels tall (16 CSS pixels)
  • 1.008665 renders only 16 pixels tall (6 CSS pixels)
  • 1 renders only 9 pixels tall (4 CSS pixels)
  • Hafele-Keating…nt - Wikipedia renders only 4 pixels tall (6 CSS pixels)
  • Copyright © Pa…ecki 2002-2016 renders only 6 pixels tall (16 CSS pixels)

Landing Page Redirects

Your page has no redirects. Learn more about avoiding landing page redirects

GZIP Compression

You have compression enabled. Learn more about enabling compression.

Leverage 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://electromagnetism.me.uk/chargeradeq1.gif
  • http://electromagnetism.me.uk/chargeradeq2.gif
  • http://electromagnetism.me.uk/chargeradeq3.gif
  • http://electromagnetism.me.uk/chargeradeq4.gif
  • http://electromagnetism.me.uk/chargeradeq5.gif
  • http://electromagnetism.me.uk/chargeradeq6.gif
  • http://electromagnetism.me.uk/chargeradeq7.gif
  • http://electromagnetism.me.uk/elmagrad11.gif
  • http://electromagnetism.me.uk/feynman's-double-slit-experiment.gif
  • http://electromagnetism.me.uk/heisenberg1.gif
  • http://electromagnetism.me.uk/induc11.gif
  • http://electromagnetism.me.uk/induc12.gif
  • http://electromagnetism.me.uk/matter-waves18.gif
  • http://electromagnetism.me.uk/perpend11.gif
  • http://electromagnetism.me.uk/perpend12.gif
  • http://electromagnetism.me.uk/perpend13.gif
  • http://electromagnetism.me.uk/proton-proton-chain.gif
  • http://electromagnetism.me.uk/purcell11.gif
  • http://electromagnetism.me.uk/purcell12.gif
  • http://electromagnetism.me.uk/purcell13.gif
  • http://electromagnetism.me.uk/purcelleq11.gif
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  • http://electromagnetism.me.uk/purcelleq22.gif
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  • http://electromagnetism.me.uk/relativistic-energy.gif
  • http://electromagnetism.me.uk/relativistic-force.gif
  • http://electromagnetism.me.uk/relativistic-mass.gif
  • http://electromagnetism.me.uk/relativistic-momentum.gif
  • http://electromagnetism.me.uk/relativistic-velocity-addition.gif
  • http://electromagnetism.me.uk/style.css
  • http://electromagnetism.me.uk/synchrotron-radiation.gif
  • http://electromagnetism.me.uk/synchrotron-radiationv2.gif
  • http://electromagnetism.me.uk/time-dilation1.gif
  • http://electromagnetism.me.uk/timedileq1.gif
  • http://electromagnetism.me.uk/timedileq2.gif
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  • http://electromagnetism.me.uk/uvectorx.gif
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  • http://electromagnetism.me.uk/velocitytime.gif
  • http://electromagnetism.me.uk/vxB.gif

Server Response Time

Your server responded quickly. Learn more about server response time optimization.

Minify CSS

Your CSS is minified. Learn more about minifying CSS.

Minify HTML

Your HTML is minified. Learn more about minifying HTML.

Minify JavaScript

Your JavaScript content is minified. Learn more about minifying HTML.

Render-blocking JavaScript and CSS

Your page has (1) blocking script resources and (0) blocking CSS resources. This causes a delay in rendering your page. None of the above-the-fold content on your page could be rendered without waiting for the following resources to load. Try to defer or asynchronously load blocking resources, or inline the critical portions of those resources directly in the HTML.

Render-blocking JavaScript

  • http://electromagnetism.me.uk/style.css

Render-blocking CSS

Optimize Images

Properly formatting and compressing images can save many bytes of data.
Optimize the following images to reduce their transfer size by 18.1KiB ( 38% reduction ).

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Prioritize Visible Content

You have the above-the-fold content properly prioritized. Learn more about prioritizing visible content.

Google Page Speed Insight (Desktop)


Page Statistics


numberResources50numberHosts1
totalRequestBytes3153numberStaticResources49
htmlResponseBytes21815overTheWireResponseBytes366514
cssResponseBytes1873imageResponseBytes359450
numberCssResources1


Page Speed

Landing Page Redirects

Your page has no redirects. Learn more about avoiding landing page redirects

GZIP Compression

You have compression enabled. Learn more about enabling compression.

Leverage 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:

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