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Site Report

This tab shows pages that exhibit browser-specific behavior, or trigger browser bugs.

BrowserInternet ExplorerEdgeFirefoxSafariOperaChromeiOSAndroid
Version8910111658≤ 10114963≤ 91011≤ 34*Key
Critical IssuesCritical, no issuesCritical, no issuesCritical, no issuesCritical, no issuesCritical, no issuesCritical, no issuesCritical, no issuesCritical, no issuesCritical, no issuesCritical, no issuesCritical, no issuesCritical, no issuesCritical, no issuesCritical, no issuesCritical, no issuesCritical Missing content or functionality
Major IssuesVery Important, 1 issuesVery Important, 1 issuesVery Important, 1 issuesVery Important, 1 issuesVery Important, no issuesVery Important, 1 issuesVery Important, 1 issuesVery Important, 1 issuesVery Important, 1 issuesVery Important, 1 issuesVery Important, 1 issuesVery Important, 1 issuesVery Important, 1 issuesVery Important, no issuesVery Important, no issuesVery Important Major layout or performance problems
Minor IssuesImportant, no issuesImportant, no issuesImportant, no issuesLess Important Minor layout or performance problems

* Most Android devices from 4.1 onwards use Chrome as the default browser, older versions use the original Android browser

PriorityDescription and URLGuideline and Line#Count

Priority 2

1 issues on 1 pages

Very ImportantThe doctype of this page triggers quirks mode in IE, Firefox and most other browsers. This means pages may look different in different browsers.Internet Explorer Firefox Safari iPhone/iPad Chrome Opera 1 pages
Change the DOCTYPE statement to one that does not trigger quirks mode.
http://mtkosciuszko.org.au/polski/zdobycie.htmLine 1
Expand all 1 issues