html - Test browsers compatibility with my website

Question

Recently users of my website complained about the lack of support to IE67.

1. Is there an offline tool to test if a page-HTML isn't compatible with a specif browser and where is the problem?

2. Where can I find a list of things I need to be aware of in order to support IE6?

Update: The problems the users describe are in the UI, <Div>are not in the right places and that kind of problems, not JavaScript issues.

I can't force the users to upgrade theirs browsers.

Answer 1

• IE6 is an ancient browser. Tell people who complain about lack of support that it's no longer supported and they should upgrade.

• There is no "syntax checking" tool to find all incompatibilities, because the problems are not in syntax but how it's interpreted. There is no way around visual testing I'm afraid.

• Here are some interesting SO questions on the topic:

  • One fix for all IE6 problems
  • How are programmers tackling ie6 bugs these days?
  • Running Internet Explorer 6, Internet Explorer 7, and Internet Explorer 8 on the same machine