Tutorial iPhone Catcher

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<IfModule mod_rewrite.c>
RewriteEngine On
RewriteCond %{HTTP_USER_AGENT} .*iPhone.*
RewriteRule ^index\.html$ http://www.mobile.mydomain.com [L]
RewriteRule  ^/$ http://www.mydomain.com/index.html [L]
</IfModule>

Tutorial iPad Detection

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Of course, the iPad is a pretty large screen and a fully capable browser, so most websites don't need to have iPad specific versions of them. But if you need to, you can detect for it with .htaccess

RewriteCond %{HTTP_USER_AGENT} ^.*iPad.*$
RewriteRule ^(.*)$ http://ipad.yourdomain.com [R=301]

This will redirect iPad users to a URL you specify. This is probably the best way to do it (assuming you are running an Apache server), but if you aren't, there are PHP and JavaScript methods here.

Tutorial Get The Dreamhost Stats Page Working on a WordPress Site

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For websites hosted with Dreamhost, you have an analytics page by default at yoursite.tld/stats/. WordPress can interfere with this, thinking that you are trying to link to a page or category and give you a generated 404 page instead.

Simply add this to your .htaccess file ABOVE the typical # BEGIN WordPress stuff to get it working again.

<IfModule mod_rewrite.c>
RewriteEngine On
RewriteBase /
RewriteCond %{REQUEST_URI} ^/(stats|failed_auth\.html).*$ [NC]
RewriteRule . - [L]
</IfModule>

Tutorial Force Files to Download (Not Open in Browser)

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AddType application/octet-stream .csv
AddType application/octet-stream .xls
AddType application/octet-stream .doc
AddType application/octet-stream .avi
AddType application/octet-stream .mpg
AddType application/octet-stream .mov
AddType application/octet-stream .pdf

Tutorial Force Favicon Requests to Correct Location

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For whatever crazy reason, perhaps evil-doing site scanners, requets to a web server for a favicon in all known crevasses of the site are fairly common. Since that file probably only actually exists in the root directory of your site, these requests result in a 404. If you server up a fancy, user-friendly 404 page, this can add up to a ton of bandwidth for no good reason.

This code will make those requests serve up the real favicon instead, saving bandwidth:

# REDIRECT FAVICON.ICO
<ifmodule mod_rewrite.c>
RewriteCond %{REQUEST_URI} !^/favicon\.ico [NC]
RewriteCond %{REQUEST_URI} favicon\.ico    [NC]
RewriteRule (.*) http://css-tricks.com/favicon.ico [R=301,L]
</ifmodule>

Another common one is requests for a file called ajax-loader.gif, probably evil scanning looking for poorly made ajax applications in which to exploit. Make sure that file really does exist and force all requets for it to that real location.

# REDIRECT AJAX-LOADER
<ifmodule mod_rewrite.c>
RewriteCond %{REQUEST_URI} !^/images/ajax\-loader\.gif [NC]
RewriteCond %{REQUEST_URI} ajax\-loader\.gif           [NC]
RewriteRule (.*) http://css-tricks.com/images/ajax-loader.gif [R=301,L]
</ifmodule>

Tutorial Force Correct content-type for XHTML Documents

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Most webservers serve XHTML content as text/html what is definitly the right way to handle XHTML documents. In case the server isn't doing that correctly, you can force it on Apache servers with .htaccess:

RewriteEngine On
RewriteCond %{HTTP_ACCEPT} application/xhtml\+xml
RewriteCond %{HTTP_ACCEPT} !application/xhtml\+xml\s*;\s*q=0
RewriteCond %{REQUEST_URI} \.html$
RewriteCond %{THE_REQUEST} HTTP/1\.1
RewriteRule .* - "[T=application/xhtml+xml; charset=ISO-8859-1]"

Reference URL

Tutorial Force charset utf-8

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If you can not change the configuration of Apache server, use this code to force decoding of page to utf-8.

AddDefaultCharset utf-8

Reference URL