Former TUAW colleague David Chartier over at Finer Things in Mac has noted something interesting about the innocuous iWork '09 file format. What he found may surprise you.

An iWork '09 file created from Pages, Numbers, or Keynote actually lives a secret life as a ZIP archive. This trick isn't a new one; the most common example of archive trickery by Apple is probably the iPod/iPhone software bundle which uses ZIP as a container format. Previous iWork versions actually created folder-like bundle files by default, which made them tricky to upload to cloud storage or email to collaborators.

In the case of the new iWork files, changing the file extension to .zip and expanding the archive reveals the as-expected XML document and plist files (for the document and its formatting) as well as a little PDF surprise -- a preview version of the file. What this means for you is that you can send an iWork file to a friend or co-worker and regardless of their operating system choice or installed software base, they can "view" your document by unzipping it and opening the PDF.

On Windows, you would simply change the extension to .zip and open with your favorite un-archiving utility. Given the kludgy-ness of this process, it doesn't surprise me that Apple isn't promoting it. However, it would be interesting to see the folks in Cupertino release an iWork viewer for the Windows users in our lives (other than the extant iwork.com sharing service).

[Via Download Squad]

It's time once again for Ask TUAW! For this round we take questions about cleaning a malfunctioning Mighty Mouse, opening files and applications with the return key, expanding a Boot Camp partition, finding alternatives to Adobe Acrobat, caring for your notebook battery, and more

As always, your suggestions are welcome. Questions for next week should be left in the comments. When asking a question please include which machine you're running and which version of Mac OS X (we'll assume you're running Leopard on an Intel Mac if you don't specify). And now, on to the questions!

SmileOnMyMac has released a major update to PDFpen, their PDF editing software which we examined at a while back. PDFpen allows you to edit PDFs to fill out forms (e.g. scans of existing forms), mark-up documents, etc. The biggest new feature for version 4 is the inclusion of basic OCR functionality that will turn a scanned document into editable text. In addition there is support for new file formats including importing Microsoft Word documents.

PDFpen comes in two versions, a basic version for editing PDFs and a pro version that also allows you to create editable forms (i.e. forms that can be filled out by users with a PDF reader like Acrobat or Preview). PDFpen is $49.95 (or $99.95 for the pro version). Upgrades for to version 4 from previous version are $25. Demos for both standard and pro are available for download.

TUAW's going Back to School! We'll be bringing you tips and reviews for students, parents and teachers right up until the bell rings in September. Read on for a timely app update useful for students.

PDF management app Papers has been bumped to version 1.8.5, bringing what the developers claim are 100 improvements. Top on the list is a new sharing feature called Papers Archives, which lets you share a PDF file and its associated metadata with a colleague.

Papers isn't for everyone. Instead, it's specifically designed for students and academics, particularly those who deal with a lot of scientific periodicals in the course of their research. It lets you search them, sort them (manually or using Smart Folders), find them on any one of 14 different online repositories, rate them, browse your library in tabs, and much more.

Papers costs $42 for a single-user license, but students qualify for a 40 per cent discount.

Adobe has released version 9 of its Adobe Reader PDF display software. The newest version includes a number of changes including faster launching, "PDF Portfolios" (bundles of PDFs and other document types), native Flash support, and support for the online Acrobat.com beta (through Adobe AIR) with a variety of online PDF services.

Adobe Reader 9 is a free download from Adobe and is platform (Intel/PPC) specific.

[via Macworld]

If you switched to Firefox from another browser like Safari that supports in-line PDF viewing (that's the ablity to look at a PDF in the browser instead of downloading it), then you might have been disheartened to learn that Firefox does not support this feature natively. However, you will find Firefox-Mac-PDF to be a useful plug-in.

Firefox-Mac-PDF allows for the same in-line PDF viewing that can be found in Safari. This plug-in requires Firefox 3 and Mac OS X 10.4 (Tiger) or higher. You can download the plug-in for free from their Google Code page.

To install the plug-in, just open the Add-ons panel by going to Tools > Add-ons. Once there, drag the downloaded ".xpi" file to the Add-ons. You will be asked if you wish to install the plug-in. Once you restart Firefox you'll be able to view all PDFs right within Firefox.


[via Lifehacker]

Some of you news hounds may be aware of Newseum, the "interactive museum of news." Every day, they publish the front pages of over 600 newspapers from several companies. Wouldn't it be cool to get just the ones you like delivered to your (virtual) door as a single PDF? Automator to the rescue!

Dave Bednarski sent a great script he wrote to the folks at 37signals which serves that purpose. Basically, you enter the addresses of the papers you'd like to receive, filter for PDFs, download the result to the desktop and combine the lot by appending the pages into one big file. It's just that easy.

For an added bonus, attach this script to an iCal event and have your news waiting for you each morning. All that's missing is your mug of coffee, and the muddy pawprints of the family dog on the carpet after he runs out in the rain to chase the paperboy.

Apple has an interesting video tip up this week on reducing the file size of graphic intensive PDFs created from the Print dialog. In their example they make a PDF from a Keynote presentation containing lots of graphics, and substantially reduce its size by selecting the "Reduce File Size" Quartz filter in the ColorSync options of the Print Dialog before choosing "Save as PDF..." from the PDF drop-down menu. In their example, without the filter the resulting PDF is 5.3MB and with the filter it's only 632KB. So I thought I'd give it a try on some of my own documents. But then I ran into a problem.

The Print dialog ColorSync access to Quartz filters has disappeared in Leopard. The video tip was made with Tiger; it seems a little bit ironic that they would release it now with a feature that is no longer available in Leopard. However, digging around a little bit I discovered a work-around. The Quartz filters are still available on the Save dialog box in the Preview application (above). So to achieve the same effect when you're in the Print dialog instead of choosing "Save as PDF..." from the drop down menu rather hit the "Preview" button, which opens the PDF in the Preview application. You can now "Save as..." and when you do the Quartz filter drop-down menu will appear, including the "Reduce File Size" filter. Give it a name and save it and you'll have your smaller PDF.

In my own testing using the "Reduce File Size" filter did noticeably degrade the quality of images in the PDF, but the file size savings were significant as well. It would actually be nice if there were more granularity so you could have some control over the compromise between file size and image quality. Nonetheless, if you have to shrink a graphics intensive PDF for emailing, etc. this can be a handy tip.

Leap is a new Finder replacement from Ironic Software that eschews traditional directory structures in favor of search and tagging. The software is pretty smart, and groups together common file types so you can find what you're looking for in a hurry. It also allows you to add your own tags to files, and creates a 'tag cloud' that outlines what kind of files you're looking at, what folders those files are in, and what user created tags they possess. The larger the label, the more files are tagged with that (as you can see in the screenshot above I have lots of image files on my Desktop).

The iPhoto-like UI is easy to use, and really shines when the Loupe is used. The Loupe is a tool that lets you peek at the contents of supported file types without launching any additional apps. Leap is in Beta, and the Loupe's performance makes that clear. It was a little slow, and sometimes lagged when I pointed my mouse from file to file.

In addition to all its Finder abilities, you can use Leap as a replacement for Apple's built in Spotlight interface, and yes the tag cloud is right there with your Spotlight results.

Take a look at this demo movie to get a better idea of what Leap can do for you.

Leap is currently in beta, and pricing has not been announced. You will get a free license, though, if you buy Yep, a PDF organizer that Ironic sells for $34, now.

[via factoryjoe]

Since we last mentioned the Skim PDF reader and annotating application it has grown considerably and the newly released version 0.7 adds bevy of new features. Since that early release back in April they've added considerably to the markup and searching tools (including live search of the document with context in addition to searching just the annotations). There's also greatly expanded AppleScript support and a presentation mode. The crazy keyboard shortcut system we complained about before has also been simplified and improved. In short, Skim is getting better by leaps and bounds and is definitely worth another look if you regularly need to read and markup PDFs. While you can still only highlight PDFs with selectable text (i.e. PDFs that are not just scans), the anchored note and box features make marking up even image PDFs easier.

Skim remains open source and thus a free download from SourceForge.

[via MacUser]

Earlier today, I learned about this iPhone screen shot snippet meant to be used inside an application. It produces PDF results. After playing with the code and realizing it probably couldn't be expanded to a general purpose screenshot utility, I decided to write one from scratch by taking advantage of UIApplication's _dumpScreenContents: protocol.

My screenshot utility, which you can download here runs from the command line and produces a PNG output of your screen. I look forward to using this tool. It's certainly going to be a lot easier than trying to light the iPhone correctly and avoid reflections while snapping pictures with a digital camera.

Update: My daughter figured out that if you set the iPhone to never sleep and put it into camera mode, you can script it to take screen shots every minute (or five minutes or however long) to take time lapse series of images. We are so going to try this out.

Update 2: Tried it out. Only gets about 4 pictures per minute when in a loop so video is a no-go.

The title explains it all: Revealed in Apple's new iPhone Guided Tour video is the swanky handset's previously-unknown ability to read Word, Excel, and PDF document e-mail attachments. This alleviates fears to the contrary, and will sure be useful for those business-types On The Go eager for their quarterly profit reports and sweet pie charts and whatnot. But without actual editing capabilities, those business-y people still have something to complain about.

Then again, does anybody actually edit Word/Excel documents on their BlackBerry? (Serious question.)

TUAW reader Jakob writes that he often uses OS X's "Print as PDF" feature. He asks if there's a way to print only part of a website by dragging out a selection rectangle?

Yes, Jakob, there's a very simple way. Yesterday, I posted a Terminal Tip about using OS X's built in command-line screencapture utility. What I didn't mention in that post was that screencapture allows you to grab your shots in PDF format. To use the mouse to capture a rectangle from the screen and then save it to PDF, just issue a command along the following lines:

% screencapture -i -s -tpdf ~/Desktop/foo.pdf

And if you're not big on using Terminal and the Command line, here's another way to approach the problem with Grab. Launch Grab from Applications/Utilities and choose Capture -> Selection. Use the cross hairs to select part of the screen and then print the results to PDF (File -> Print, then PDF -> Save as PDF).

If you need to capture more data than a single screen will allow, consider Paparazzi. It's a donate-ware utility that allows you to enter a URL and a screen size. It loads the web page from the URL you provide and produces an image from that data--regardless of whether you'd have to scroll the screen to see the entire page in a normal web browser. No, it won't save to PDF, but it's pretty easy to convert the images if you have to. Update: The latest version of Paparazzi will save to PDF including searchable text.

In a follow-up message, Jakob mentioned that he's really interested in producing a searchable result. Sure you can save to a web archive but both web archives (use File -> Save as or File -> Save Page as or the equivalent in your favorite browser) and his current method of printing to PDF create pretty big files, even if they are searchable. So here's my final recommendation: invest in Acrobat, not just in Acrobat Reader. In Acrobat, use Document->Extract Pages to save only those portions of the web page you want to keep and delete the rest.

In a comment to our recent PDF review, Gary let us know about about Skim, a new open source project to produce a tool for reading and marking up PDFs. Skim already has a number of interesting tools, allowing you to:

• embed notes (both shorter notes that appear over the PDF, and anchored notes which are marked by a speech bubble icon that leads to a separate window)
• add circles and boxes
  
• if the text in the PDF is selectable, highlight, strike-through, and underline.
  

Skim even has a full screen mode, as is popular with the kids these days. For a version 0.2 release there's already a lot of functionality here, which bodes well for the future (though I have to say the keyboard shortcuts for notes and markup are insane). Unlike Papers, which we mentioned before, Skim doesn't seem to be intended as a PDF library manager, but rather an individual PDF markup tool. It is available now as a free download from SourceForge.

In my professional life I deal with a lot of PDFs. In my research I'm constantly reading PDF versions of journal articles, and often I'm submitting articles of my own in PDF (though a distressing number of journals require Microsoft Word DOC submissions). I also often convert my students' papers to PDF for commenting, etc. All of this is to say, I'm always on the lookout for good tools to help me deal with PDFs. Of course the 900 pound gorilla of PDF tools is Adobe Acrobat ; unfortunately, it's priced accordingly (Acrobat Professional is $379.99 at Amazon). So I thought I would look at two much less expensive PDF tools on the Mac, to see how they stack up, and to decide which one I want to spend my own hard earned cash on. Our two candidates are PDFClerk (€30 or $40.50) from SintraWorks and PDFpen ($49.95 or $94.95 for Pro edition, educational pricing available) from SmileOnMyMac. Let's see how they compare.