iOS comes with a fast and elegant built-in PDF viewer (in fact, the latest JailbreakMe 3.0 is largely based upon a security hole in the PDF display engine), but unlike Mac OS X the options to convert documents into new PDF files are limited. PDF Converter, a new app by Readdle (the makers of PDF Expert and Terra web browser, among others), aims at providing an easy to use yet powerful solution to turn almost anything on your iPad (webpages, documents, clipboard contents, even photos) into new PDF documents to save locally or send to an external physical or virtual printer.
Released earlier today at $6.99 on the App Store, PDF Converter runs as an iPad-only application for now. The interface resembles Readdle's previous works for the iPhone and iPad -- namely ReaddleDocs and PDF Expert -- with a narrow sidebar on the left side of the screen allowing to switch between the different types of content you can convert to PDF. The app supports PDF creation off clipboard contents, Address Book contacts, photos, webpages and just about any document that can be sent to third-party apps using iOS' native "Open In" menu. By opening a document into PDF Converter, in fact, the app will take care of turning it into a properly formatted PDF document that keeps pagination and line breaks (as well as layout and graphics) intact, while making the doc's text entirely selectable as you would expect from a PDF. Unlike ReaddleDocs and PDF Expert the app doesn't come with direct iDisk and Dropbox access, but the developers recommend you use the "Open In" menu in those apps if you wish to get documents into PDF Converter.
In my tests, I've found PDF Converter to perform reliably with a variety of content and clipboard contents sent from iOS apps to Readdle's utility. The built-in Address Book integration will allow you to print out contacts in a simple plain-text layout with all available fields (email, phone, address), but more importantly full clipboard integration means you'll be able to, say, copy a web address from Safari into your system's clipboard, launch PDF Converter and have the webpage you just visited available as a PDF you can print, email, or open into another app (you can't rename PDF files in the current version of the app, but Readdle says that's coming with an update soon). Furthermore, the developers have enabled a unique URI shortcut system for PDF Converter that will let you send a webpage from Safari to the app by simply adding "pdf" (without quotes) before the http:// string of a webpage, in the address bar. Change a URL to "pdfhttp://", wait a few seconds, and the webpage will become a new document in PDF Converter. I tried this by saving MacStories' and Brooks Review's homepages as new docs in PDF Converter, and then I sent them off to a virtual printer on my Mac using the amazing Printopia desktop printing tool. Not only did the PDF transfer just fine, unlike other solutions to generate PDFs off webpages, PDF Converter's engine kept the layout of both sites exactly the way I'm used to see it in Safari. For offline reading and webpage archiving (perhaps paired with Evernote on the Mac, or other apps like Yojimbo and DEVONthink), this is very useful.
At $6.99, with PDF Converter you get a powerful tool to create new PDFs on your iPad, and share them with other apps that support document interaction with iOS' built-in features. The price may be a little steep and the app definitely isn't for everyone -- it's a rather niche software that, however, addresses a common complaint with elegance, and good interoperability with Readdle's other PDF app, PDF Expert.