Frames break numerous conventions that web users had grown used to, e.g. the possibility to save a specific website as a favourite or to mail the direct URL to a friend. In addition, when viewed with older browsers, frames disable the 'Back' button and make it impossible to print out the webpage. Frames are to be avoided as far as possible, even though later generation browsers can handle them better.
Source:
"Prioritizing Web Usability" by Jakob Nielsen/Hoa Loranger
Further information:
http://www.html-faq.com/htmlframes/?FramesAreEvil
The tested website contains so called embedded frames or "iframe" (=inline frame = frame in line with the flow of the text; these are discourage too). Further information: http://de.selfhtml.org/html/frames/eingebettete.htm.
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A potential hint has been identified.
"Even though machine-level addressing like the URL should never have been exposed in the user interface, it is there and we have found that users actually try to decode the URLs of pages to infer the structure of web sites. Users do this because of the horrifying lack of support for navigation and sense of location in current web browsers. Thus, a URL should contain human-readable directory and file names that reflect the nature of the information space."
Source:
http://www.useit.com/alertbox/9605a.html
Further information:
http://www.w3.org/QA/Tips/uri-choose
The URL structure of the tested Website is generally good, though some complex URLs are used internally.
When clicking on a link, web users expect to see the new page in the existing window. Most users lose control if there are several windows open, are unable to navigate back with the back function and get lost. At the same time, and this is particularly true for old computers, the system can get overloaded and crash if too many browser windows open. If new windows open but are not seen by the user, the perception is that the website does not work properly. Experienced users who want to open new windows know how to do this by using the function "Open (link) in New Window", or with similar comands.
There is one important exception to this rule: files in .PDF or other Office format can be opened in new windows. Users know to close them to return to the original window. In this case, users should be informed that a new window opened, and they should be given the opportunity to save the file.
Technical hint: For XHTML Strict in particular, there is the possibility to send a .PDF file with ContentType "application/pdf" and HTTP Header content-disposition: attachment; filename=filename.pdf, since there is no target attribute. This test does not take it into account yet, but this is a feasible solution.
Source and further information:
"Prioritizing Web Usability" by Jakob Nielsen/Hoa Loranger
At least one internal hyperlink opening a new window was found.
Keywords allow internal and external search crawlers to find content for interested users. Keywords should be chosen from the language and vocabulary of the web user to describe the page content as closely as possible. .
The use of precise and meaningful keywords is still an advantage, even though the importance of the keywords has dramatically decreased for external crawlers. Internal crawlers can still trust your keywords and improve your website search feature.
Source and further information:
"Prioritizing Web Usability" by Jakob Nielsen/Hoa Loranger
http://www.essex.ac.uk/wag/searchguide/search2.aspx
The tested website does not use any keywords.
A table based layout carries many disadvantages if compared to a purely CSS layout. A CSS layout improves both accessibility and performance.
Further information:
A detailed article by Douglas Bowman can be found onhttp://www.stopdesign.com/articles/throwing_tables/.
Hint for webmasters: Be sure that when embedding third party content, e.g. with iFrame, there are no layout tables included.
On the tested website there are many tables, which most probably are also used for the layout.
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A potential hint has been identified.
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A potential hint has been identified.
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A potential hint has been identified.
Alternative text is displayed if an image cannot be downloaded or if the mouse pointer is moved over the image*. The alternative text is on one hand important for visually impaired visitors, using an audio tool to read the content of the website and the alternative text of images.
On the other hand, alternative text can also be recognised by search engines. Alternative text needs to be phrased in a meaningful manner, though it should not be a detailed description of the image.
Further information:
http://www.bjoernsworld.de/html/alt-text.html
http://webdesign.crissov.de/alt-Text#Start
* Internet Explorer shows alternative text as a tooltip if the mouse pointer is rested on the image. This is not prohibited but it can annoy page authors. It does also indicate that the alt-attribute refers to this tooltip, which is wrong. Should you want to add a descriptive tooltip to your images, make use of the attribute "title".
Quelle: http://de.selfhtml.org/html/grafiken/einbinden.htm#referenz
The tested website contains alternative text for images, though the length of the alternative text is for one image at least outside the range between 8 and 80 characters. Alternative text which has correctly been recorded as empty will not return a negative result.
"According to RFC 2616, Internet HTTP Compression is a method to send, from the Web server, an HTTP response message in compressed format to a requesting Web browser.
HTTP Compression saves transfer data volume and reduces web page load time." As there are some known issues with Internet Explorer 6 you may want to disable compression for IE6.
Source: http://www.http-compression.com/
The website does not use or only partially uses a GZIP or deflate compression for html files.
"According to RFC 2616, Internet HTTP Compression is a method to send, from the Web server, an HTTP response message in compressed format to a requesting Web browser.
HTTP Compression saves transfer data volume and reduces web page load time." As there are some known issues with Internet Explorer 6 you may want to disable compression for IE6.
Source: http://www.http-compression.com/
The website does not use or only partially uses a GZIP or deflate compression for CSS files.
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A potential hint has been identified.
This test result is available for registered users and Premium Members.
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A potential hint has been identified.
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A potential hint has been identified.
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A potential hint has been identified.