Most Web content will be accelerated, but there are certain exceptions:
| What will be accelerated |
|---|
| All text - HTML, markup, and javascript |
| Most graphics & photos - including jpeg and gif images |
| Most banner ads - including animated gif images and Macromedia Flash content |
| All browser-based emails |
| POP3 and IMAP protocol emails and attachments |
| Outgoing SMTP email - especially acceleration of large messages with pictures or attachments including Microsoft Word, Excel, and PowerPoint files |
| PDF files |
| What is not accelerated |
|---|
|
Secure pages, such as those used for online banking and credit card forms and pages accessed over VPN.
Why doesn't Propel accelerate HTTPS?
Technically, to accelerate HTTPS it would have to be circumvented by actively breaking the protocols in use and spoofing the desired destination site. However, doing this would create a break in the security of the HTTPS protocol, potentially allowing the logging and clear text visibility of the user's private data, such as credit card numbers, PIN codes, and bank access information. Propel Accelerator does not accelerate HTTPS traffic because this level of security risk would be unacceptable to our end users. |
| Streaming media, and audio and video
files
Why not compress streaming media?
Propel does not compress streaming media because video files and audio files delivered in the streaming format have already been compressed to the extent possible. To attempt further compression would degrade the streaming media past an acceptable level. |
| Files downloaded outside your browser using ftp |
