If you need to work with PDF files but do not have the privileges to install your favorite PDF application, the internet is where you look for help. There are web apps for everything, including creating and modifying PDF files. PDFaid is a website that lets you do both of these things.

modify pdf files

PDFaid is a free to use website that offers a number of PDF-related features. Using the site you can add a watermark to existing PDF files, join/split PDF files, rebrand PDF files, extract images from those documents, and add pop-ups to PDF files. You can also create new PDF files from images, Office documents, and HTML files.

If you are using the site's services for free, your PDF file cannot be larger than 500 KB; similarly if you are creating a PDF from a file, the original file cannot be larger than 500 KB. You can remove this limit by going for the site's paid account.

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Check out PDFaid @ www.pdfaid.com