Tidying up your HTML with PHP

You can save considerable bandwidth with tidy as well

Consider the following ran against a copy of the php.net home page:

Saving bandwidth with tidy

<?php
    
    $opts = array("clean" => true,
                  "drop-proprietary-attributes" => true,
                  "drop-font-tags" => true,
                  "drop-empty-paras" => true,
                  "hide-comments" => true,
                  "join-classes" => true,
                  "join-styles" => true);

    $tidy = tidy_parse_file("php.html", $opts);                  
    tidy_clean_repair($tidy);
    
    echo $tidy;
?>

After tidy is finished, compare the file sizes..

Before and after...

-rw-rw-r--    1 john     john        27066 Jan  3 04:11 php.html
-rw-rw-r--    1 john     john        26193 Jan  3 04:11 php_tidy.html

Without losing maintainability, tidy has saved 873 bytes per request

That might not seem like a lot, but when you serve 100,000 hits a day you save 87.3 megabytes a day in bandwidth.