Freely Rotate PDF Page Online-Google App Engine Application

Rotate PDF Page Online(PdfRotate)

RubyPDF release the 3rd Google App Engine Application, PDFRotate Online, wit it, you can freely rotate PDF page online, the rotate angles support 90, 180 and 270 degrees.

Rotate PDF Page Online(PdfRotate)

If you want offline version, please check pdfrotate.

Free Divide PDF Page Online-Another Google App Engine Application

Today, RubyPDF released another Google App Engine Application, Freely Divide PDF Page Online, also bases on iText.

the main feature is Split a PDF page to two half size Pdf Page, for example, Split a A3 Page to two A4 pages.

btw, RubyPDF also released desktop version before.

How to download the big files through Google App Engine UrlFetch API Call

I offer the UrlFetch function in my PDF Password Remover Online application, but I do not want to let it only manipulate no more 1M PDF, after some study, I got the solution, let UrlFetch API download no more 1M data each time, but repeat many times until all data downloaded, of course, there still a limit, 30 second request limit.
For details, please visit

How to Use Google App Engine UrlFetch API to download the files over 1M

First PDF Password Remover application hosted on Google App Engine

RubyPDF Software released the First PDF Password Remover application hosted on Google App Engine, bases on iText(version 2.1.7, but with many modification). with it, you can easily remove the user password or owner password online, and it is free.

• remove restrictions on any secured PDF document (you should have the right to do it, for example, if you forgot the password). Any Acrobat version up to 9 is supported, even with 128-bit AES or 128-bit RC4 encryption. PDF restrictions removal is an instant process. Unlocked file can be opened in any PDF viewer without any restrictions so you may edit/copy/print it.
• remove the PDF open password. Decryption of the file with password for opening is guaranteed for PDF files Any Acrobat version up to 9 is supported, even with 128-bit AES or 128-bit RC4 encryption,but you must know the password first.

For details, please visit RubyPDF PDF Password Remover Online.

How to Run WordPress on Google Application Engine

Google Application Engine is also known as GAE, by default GAE does not support PHP, but Quercus has solve the problem,Quercus is reliable PHP implemented in 100% Java, and we can  Run PHP on Google App Engine.

WordPress is Developed in PHP and Mysql, but GAE does not support Mysql,  so how to Run WordPress on Google Application Engine?

Quercus gives the answer,

Since WordPress already runs on Resin with Quercus, all I needed to do was convert the MySQL queries to instead use the App Engine’s subset of JPA. In the end, it took about a week of uneventful work to get enough of WordPress running so we could demo it at Google I/O.

for details, please visit Quercus on Google App Engine.