[Mupolan]

I don't know if that is a http server or html stuff, but locally, if I have something like <img src=/my_image.png> , that doesn't work. But that works on the server my site is stored on.
Does my apache do not understand absolute path ?

[Poolkop]

Where should the /file.ext be? in the same directory as html page?

[Mupolan]

No, on the site root
Maybe the use of alias make the absolute path to point to the wrong location ?

[AmeliaR]

So you have localhost/directory/file.html and the image is in /directory

[Mupolan]

(my local site is a alias in httpd.conf)

[Poolkop]

Btw. use quotes <img src="/my_image.png">

[AmeliaR]

And <img.... />

[Mupolan]

AmeliaR , I have http://localhost/alias_name/page.html with alias pointing to "/data/site/" and my image is in /data/site/

[Poolkop]

Don't know what are you trying to say, but /> belongs to xml(so xhtml too). in html the slash should not be there.
*-should +must

[AmeliaR]

Poolkop: can you browse to localhost/data/site/