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29/5/2015 How to Reduce the File Size of a PDF Using Preview Rev A NosillaCast
http://www.podfeet.com/blog/tutorials-5/how-to-reduce-the-file-size-of-a-pdf-using-preview-2/ 1/8
HowtoReducetheFileSizeofaPDFUsingPreviewRevA
EvercreatedaPDFwithimagesonlytodiscoverthefilewashuge?UsingPreviewyoucanshrinkthefileeasilybutthequalityfotheimages
willbedreadful.Backin2012,JosefHabrfiguredoutacleverwaytoeditsomeSystemlevelLibraryfilestoimprovethequalityofthe
imageswhenusingPreviewtocompressthefilesandpostedthemonhttp://hints.macworld.com.Hespentsometimecomingupwithsome
optionsforgood,better,andbestimagequalitytoo.Afterhepostedthis,someoneelsepointedoutthatinsteadofeditingtheSystem
Libraryfiles,youcouldaccomplishthesamethingusingtheColorSyncutility.WhileusingtheColorSyncUtilityisgreatforcreatingthe
modifiedfilters,manyhavereportedthatyoustillhavetomovethefiltersintotheSystemlevelLibrarytomakethemtake.
Basicoutlineofthestepswillbe:
1. ShowhowthedefaultReduceFileSizeoptionisaccessedinPreview
2. UseColorSyncUtilitytocreategood,betterandbestfilters
3. CopythenewlycreatedfiltersintotheSystemlevelLibrary
4. VerifythatthenewfiltersareavailableinPreview
Onecautionwhenyoureinstallorupgradeyouroperatingsystem,thesefilterswillberemoved,sokeepacopyofthistutorialandacopy
ofyourfiltersaswellsoyoucanputthembackforlateruse.
1.DefaultReduceFileSizeinPreview
OpenaPDFinPreviewandchooseSaveAs
YoumayneedtoholddowntheOptionkeybeforeyouclickonFiletogettheSaveAsmenutoappear.
1.1TapontheQuartzFilterPulldown
29/5/2015 How to Reduce the File Size of a PDF Using Preview Rev A NosillaCast
http://www.podfeet.com/blog/tutorials-5/how-to-reduce-the-file-size-of-a-pdf-using-preview-2/ 2/8
1.2ChooseReduceFileSize
Thisoptionmightworkforyourneed,buttheimagequalitywillbeprettypoor.WeregoingtoaddthreemoreoptionstothelistforGood,
BetterandBest,allofwhichwilllookmuchbetterthanthedefault.
2.SettingUpColorSyncUtility
ColorSyncUtilityishidinginApplications/Utilities
29/5/2015 How to Reduce the File Size of a PDF Using Preview Rev A NosillaCast
http://www.podfeet.com/blog/tutorials-5/how-to-reduce-the-file-size-of-a-pdf-using-preview-2/ 3/8
2.1ReduceFileSize(Default)
Weregoingtomakeacopyofthedefaultfilter.Tapthedisclosuretriangleonthelefttoviewtheoptions.
2.2DefaultsforReduceFileSize
Toduplicatethefilter,tapthedisclosuretriangleonthefarright.
2.3ChooseDuplicateFilter
29/5/2015 How to Reduce the File Size of a PDF Using Preview Rev A NosillaCast
http://www.podfeet.com/blog/tutorials-5/how-to-reduce-the-file-size-of-a-pdf-using-preview-2/ 4/8
2.4OpentheDuplicateandEdit1. ChangethenametoReduceFileSizeGood
2. ChangeScaleto25%
3. ChangetheImageMaxto842Pixels(thatsA4at72ppi)
2.5GoodFilter
YourGoodfiltershouldlookliketheimagebelow.Repeatthisprocesstwomoretimes.
1. CreateafiltercalledReduceFileSizeBetter,settheScaleto50%,ImageMaxSizeto1684(A4at144dpi)
2. CreateafiltercalledReduceFileSizeBest,settheScaleto75%,ImageMaxSizeto3508(A4at300dpi)
2.6ThreeFilters
29/5/2015 How to Reduce the File Size of a PDF Using Preview Rev A NosillaCast
http://www.podfeet.com/blog/tutorials-5/how-to-reduce-the-file-size-of-a-pdf-using-preview-2/ 5/8
3.MovingFilterstoYourSystemlevelLibrary
3.1NavigatetoyourUserLibrary
IntheFinder,holddowntheOptionkeyandclickonGo.TheOptionkeyrevealstheLibraryfolderallowingyoutoselectit.
3.2NavigatetotheFiltersfolder
InsideyouruserLibraryyoushouldnowseeaFiltersfolderwithyourthreenewfilters.Ifyoudont,makesurethatatthetopofthewindow
yousee:
/Users/yourusername/Library/Filters
NotethatthisfoldermaynotexistbeforeyouuseColorSynctocreatethesefilters.
3.3CopytheFiltersFromtheUserLibrary
Selectthethreenewfilters,andcopythem.
29/5/2015 How to Reduce the File Size of a PDF Using Preview Rev A NosillaCast
http://www.podfeet.com/blog/tutorials-5/how-to-reduce-the-file-size-of-a-pdf-using-preview-2/ 6/8
3.4NowWereGoingtoNavigatetotheSystemlevelLibrary
HolddowntheCommandkeywhiletappingonthefolderpathatthetopofyourFinderwindow.Thislittletrickletsyouquicklynavigateto
yourharddisk(mineiscalledPiggy,yoursmaybecleverlynamedorsimplybecalledMacintoshHD).
3.5Navigateto/System/Library/Filters
Pasteyournewfiltersintothe/System/Library/Filters.Notethatyoushouldseethedefaultfiltersasshownbelow.Ifyoudontseethe
defaults,youmayhaveincorrectlychosen/Librarydontpastethemthere!
29/5/2015 How to Reduce the File Size of a PDF Using Preview Rev A NosillaCast
http://www.podfeet.com/blog/tutorials-5/how-to-reduce-the-file-size-of-a-pdf-using-preview-2/ 7/8
3.6Authenticateasanadministrator
3.7YouShouldSeeYourNewFiltersinPlace
4.VerifyOpenYourDocumentinPreview
ChooseFile,SaveAs
4.1UnderQuartzFilter,YouShouldNowSeeYourNewFilters
29/5/2015 How to Reduce the File Size of a PDF Using Preview Rev A NosillaCast
http://www.podfeet.com/blog/tutorials-5/how-to-reduce-the-file-size-of-a-pdf-using-preview-2/ 8/8