Otherwise, your file could end up doubly compressed, confusing your test results and rendering the images unreadable. If you’re testing different settings, make sure to close that modified file and return to your original before testing new compression settings. Also, when you click on OK in the PDF Optimizer dialog box, Acrobat Pro prompts you for a new file name and makes your changes, leaving the modified file open when you’re done. Many of the techniques it uses will degrade image quality and remove useful PDF features such as links and bookmarks. Work carefully with Acrobat Pro’s PDF Optimizer. But where PDF Shrink really sets itself apart is in how it lets you create different sets of PDF compression options (one for e-mail distribution, another for printing, and so on) and in the ways you can access it. PDF Shrink provides additional controls and a simpler interface than Preview. With some trial and error, you should be able to arrive at a compromise that satisfies you. Enter different values for Image Sampling and Image Compression, switch back to your original PDF in Preview, and save a PDF with your new filter in place of Reduce File Size. Click on the arrow to the right of Reduce File Size, choose Duplicate Filter from the drop-down menu, and name your new filter. If when you compare the compressed PDF with your original, the images are too fuzzy for your needs (the default settings are pretty severe), you can make your own Quartz filter with different settings.ĭuplicate the Reduce File Size filter to create a custom one with different image sampling and compression settings.To do this, launch ColorSync Utility (in Applications/Utilities), choose New Utility Window from the File menu if none is showing, and click on Filters in the toolbar. To shrink a PDF file, open it in Preview, choose Save As from the File menu, and, in the Save dialog box, choose Reduce File Size from the Quartz Filter pop-up menu. Though few people realize this, you can reduce the size of PDF files using the Leopard version of Preview. And if creating reasonably sized PDF files for public distribution is core to your business, as it is to mine, you need Adobe’s $449Īcrobat Pro, likely along with a tool like PDF Shrink’s big brother, the $199 PDF Shrink provides additional capabilities without breaking the bank. For more control, a utility like Apago’s $35 If dealing with PDFs is only an occasional experience for you, Leopard’s Preview utility may offer all the compression capabilities you need. How you go about slimming down your PDFs depends largely on how much you want to spend on tools, and how much control you want to exert over the process. And if your PDF uses the same image repeatedly, Mac OS X’s built-in PDF engine stores each instance separately, instead of reusing a single version of the image. By reducing those images’ size and compressing them, you can reclaim a lot of space. Images cause the most trouble, since many programs (Keynote, for example) embed them at much higher resolutions than you’d ever actually display. PDFs balloon to tens of megabytes for three main reasons: images, fonts, and the PDF format itself. Balancing quality and file size in PDFs can be tricky, but in my five years of publishing PDF books I’ve learned-through much trial and error-numerous tricks that can help you keep your PDFs small, eliminating problems with bounced e-mail attachments, unnecessarily long downloads, and higher-than-necessary bandwidth bills. Reduce the size of most PDF files by as much as 90% of their original size.ĭon't understand the difference Between JPEG and JPEG2000 or whether you need 72 or 150 DPI for images? PDF Shrink has an intuitive wizard that removes the techie jargon and unfamiliar terms and helps you pick the appropriate settings for specific requirements.You can never be too rich or too thin, the old saying goes, but when it comes to Adobe’s Portable Document Format (PDF), adding richness in the form of images and fonts causes otherwise svelte PDFs to start pining for elastic waistbands. PDF Shrink makes it easy to optimize PDF files for posting on web-sites, as email attachments, for reading on e-book readers and mobile devices. They can take forever to download and view. Why are PDF files so big?!? You can not easily email them to co-workers.
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