Free, all-in-one online based PDF generator. The tools offered by ToPDF
include:

A webpage to PDF converter.

HTML to PDF converter which allows you to customize your PDF via an HTML
editor. This editor makes it possible to put together a private catalog,
manuals, ebooks and other digital books.

File to PDF converter which provides a way to convert HTML, XML, RTF, Word
Docs, Excel and other file formats.

Ability to generate invoices which are customizable. Some of the customization
options include:

Uploading a logo.
Editing the colors of the invoice.
Editing the headings as well as the content of the invoice.
Adding multiple products to the invoice and have the totals calculated
automatically.
Offer discounts.
Choosing a currency.