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Serving WebP images for PNG and JPG files

Serving WebP images for PNG and JPG filesOne of the biggest speed bottlenecks of sites today are images, specifically unoptimized images or large scaled images. With Apaches Rewrite module we can convert all existing jpegs and png files (and most gifs) to webp, then transparently rewrite them so that a request for img.png from a browser that supports webp will receive img.webp.

Apache Logging for Remote Addresses using X-Forwarded-For

THE Ultimate Htaccess

.htaccess file tutorial .htaccess is a very ancient configuration file for web servers, and is one of the most powerful configuration files most webmasters will ever come across. This tutorial shows off the very best of the best htaccess tricks and code snippets.

You've come to the right place if you are looking to acquire mad skills for using .htaccess files!

Stopping WordPress Exploits and Spam

Secure WP Super Cache, Anti-exploits, Mitigation techniques. A bunch of current ways to stop wordpress exploits and spam. block the most common wordpress exploits

Mod_Rewrite Variables Cheatsheet

Mod_Rewrite Variables CheatsheetWe've figured out what mod_rewrite variables look like, a cheatsheet of the actual value.

Htaccess Rewrites – Rewrite Tricks and Tips

htaccess rewrite / Mod_Rewrite Tips and Tricks is as glamorous as it sounds! htaccess rewrite mod_rewrite is just possibly one of the most useful Apache modules and features. The ability to rewrite requests internally as well as externally is extremely powerful.

Get Yesterdays Time in Htaccess

htaccess rewriterules to get yesterdays timeSay you want to Serve Alternate Content based on Time, but instead of serving based off the current time, you want to serve based off yesterdays time, and using .htaccess mod_rewrite rules?

View Your Server Environment Variables using Htaccess Mod_Rewrite

Firebug Net view of Request Headers added to Response Headers with HtaccessGet your real server info

Htaccess Rewrite for Redirecting Uppercase to Lowercase

Want to redirect all links with any uppercase characters to lowercase using pure mod_rewrite within an .htaccess file? Sure why not! OR how to use RewriteMap and mod_speling for those with access to httpd.conf

Alternate robots.txt files with Htaccess

Alternate robots.txt files with HtaccessSo here's the basic idea: There are 2 sites, a development site and a live site. They are essentially mirrors of each other in terms of they have the same files. You need to disallow all search engine robots from indexing and crawling the development site, while allowing full crawling of your live site. Htaccess to the rescue!

phpMyAdmin Shortcuts with .htaccess

phpMyAdmin Shortcuts with .htaccessUse mod_rewrite to enable phpMyAdmin links in the form: /dbname/table/

RewriteCond Cheatsheet

Request to

RewriteCond %{THE_REQUEST} = GET /cgi-bin/php/pro/rewrite-test/?catch=caught&this=that HTTP/1.1
RewriteCond %{REQUEST_URI} = /cg/rewrite-test/?catch=caught&this=that
RewriteCond %{QUERY_STRING} = catch=caught&this=that
RewriteCond %{HTTP_HOST} =
RewriteCond %{HTTP_USER_AGENT} = Mozilla/5.0 (Windows NT 6.1; WOW64; rv:18.0) Gecko/20100101 Firefox/18.0
RewriteCond %{REMOTE_ADDR} =

Generating AddDescription for all Files

Mod_Status tricks to View Apache Module Directives

Apache Server Info in Lynx generated by mod_statusQuick and easy method to get a list of all Apache Modules currently loaded, a list of all the directives each module provides, a list of currently used directives, etc... These directives can be used in httpd.conf and/or .htaccess files so it is definately useful to know which ones are available and which ones are currently being used.

Mod_Rewrite Security

These are a few of the mod_rewrite uses that BlogSecurity declared pushed the boundaries of Mod_Rewrite! Some of these snippets are quite exotic and unlike anything you may have seen before, also only for those who understand them as they can kill a website pretty quick.

WordPress .htaccess in-depth

WordPress PermalinksWordPress uses a file named .htaccess to rewrite all requests to the main index.php file. This article explains what the htaccess file rules look like and what they actually do.

Htaccess Rewrites for Moving Urls

3 Ways to Serve PDF Files using Htaccess Cookies, Headers, Rewrites

FYI, using the Mod_Rewrite Variables Cheatsheet makes this example, and all advanced .htaccess code easier to understand. This demo lets you set a cookie with 1 of 3 values, then you just request the pdf file with a normal link click and get 1 of 3 different responses. This is accomplished with a nice bit of .htaccess code.

Set PDF Viewing Mode - Make a selection, then click the view pdf button.

Inline Download Save As View PDF using selected mode »

HTTP Status Codes and Htaccess ErrorDocuments

There are a total of 57 HTTP Status Codes recognized by the Apache Web Server. Wouldn't you like to see what all those headers and their output, ErrorDocuments look like?

Ultimate Htaccess Part II

Editing an Apache .htaccess file in VIM. Here is even more information from the Ultimate Htaccess Part I. For now this is very rough and you will want to come back later to read it.

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Hacking and Hackers

The use of "hacker" to mean "security breaker" is a confusion on the part of the mass media. We hackers refuse to recognize that meaning, and continue using the word to mean someone who loves to program, someone who enjoys playful cleverness, or the combination of the two.
-- Richard M. Stallman

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