A non utf-8 character: é

A non-DDC image, without alt attribute, with no dimensions set in the markup

an image served as GIF, but invalid (a png image, really), and with whitespaces as alt

A text entry without inputmode, without value attribute:

A text entry with an invalid inputmode, an empty value attribute:

a textarea without inputmode:

This image requires 10 redirects to be downloaded:

The following object hierarchy has no type attribute set, so requires downloading the resources (counting for page_size_limit, external_resources):

An image-based input:

An image using a client-side map:

An image using a server-side map:

An image with a percentage size:

An image with an inch size:

An image with greater dimensions:

An image with smaller dimensions:

A list of problematic links:

• link to a PDF file: warn MWI flipcards
• link to a page without a charset parameter, warn: no charset
• link to a page with a non-accepted charset, warn: latin1 link
• link to a non-existing anchor, warn: to #foo
• link to an "invalid" anchor, warn: to #

foo

an html inclusion:

an iframe:

a link with an onclick attribute

a select listwith the onchangeattribute set

a javascript: link

An applet, woohoo!

An object with empty fallback content:

An object with whitespaces fallback content:

A link with a target attribute: pop-up!

Plenty of presentational markup:

More presentational markup to get warnings: _^Nice!

A nested layout table :

with a small gif, too: another one with 2 columns but just one row: Col 1 Col 2 A transparent image of 2x2 (warn) A transparent image of 3x3 (fail) (more than one transparent image triggers a warn) A non-existing (404) image: ; and a 404 link. An image on a non-existing domain: An image taken from a bogus redirect (no location header): An image taken from a bogus redirect (relative uri): An image taken from a bogus redirect (non http redirect): An image taken from a protected resource: ; a link to it. A link to a forbidden resources: 403.