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Hack 31. Find Images for Your Presentation

Hack 31. Find Images for Your Presentation

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generalphotosearch,pointyourbrowserto

http://flickr.com/search/?l=ccfortheCreativeCommons–only

searchengine.Enterakeyword,suchas"skyscraper,"andlook

throughtheresultsforafittingimage,asshowninFigure4-4.

Youcanalsovisithttp://www.flickr.com/creativecommons/,

selectjustasinglevariantoftheCreativeCommonslicense,

andsearchforphotosthatusethislicense.Whenyougotothe

photodetailpage,youwillfindthespecificlicensingtermsin

therighthandnavigationbar.Clickonthe"Somerights

reserved"linktofindoutwhatexactlyyoucanandcan'tdo

withthework.

SearchingforCreativeCommons–licensedphotoson

Flickr



Forinstance,ifthephotohasa"sharealike"condition,thenyou

mustalsolicenseyourpresentationunderthesameorsimilar

CreativeCommonslicense;ifyou'recomfortablewiththose

terms,gotohttp://creativecommons.org/license/topicka

compatiblelicense.It'snicetoshareandmayevengiveyour

presentationadditionalexposure.Ifthephotohasan

"attribution"condition,thenyoumustcreditthephotographer.

PayattentiontothevariouscombinationsofCreativeCommons

licenseterms.Forexample,"Attribution-NoDerivs"allowsyouto

reusethephoto,butitdoesnotallowyoutocreatederivative

worksfromit.



NotethatwhenincludinganimagefromtheWebinyour

presentation,youmayneedtoopenitinanimageeditor,and

saveinalowerresolutionorlowerqualityformatsothatyour

presentationdoesn'ttakealongtimetoload[Hack#32].



Hack32.ShrinkYourPresentationfor

EasySharing

Don'tleaveittoGoogletooptimizethefilesizeofyour

presentation.

Whetheryou'reexportingapresentationtosendtosomeone,or

sharingaGoogleDocspresentationURLonline,itmakessense

tooptimizethesizeofthefile,sothatyoucanreducethe

amountoftimeittakestodownloadorviewyourpresentation.

Themostfrequentcauseofbloatedpresentationfilesizesare

largeimages.Theymayalsoslowyoudownwhenyou're

editingyourpresentation—thesameistrueforGoogle

documents,too.



NOTE

IfyouareauserofAdobePhotoshoporthefreeGIMP

(http://www.gimp.org)graphicseditor,youcanusethe

SaveforWebfeaturetosavefilesinanicecompact

formatthatalsolooksgoodonline.SaveforWeb

performallofthestepsdescribedinthishack.In

Photoshop,chooseFile SaveforWeb.InGIMP,you'll

needtodownloadandinstalltheSaveforWebplugin

fromhttp://registry.gimp.org/node/33beforeyoucan

useGIMP'sFile SaveforWeboption.

Aphotographthatyou'vetakenoranimageyou'vedownloaded

fromtheWeb[Hack#31]maybetoolargetobeefficiently

embeddedinawebpage.Althoughyoucanresizetheimage

withinthepresentation,Googlestillstorestheoriginalfileinits

originalsize,whichmeansthatthepersonviewingyour

presentationisdownloadingthefullimagefile.Instead,when

usinglargefiles,it'sbettertoloadtheimagefileintoyour

favoriteimageeditorandexportitusingoptimizedsettings;try

tofindthebestimagetypeandcompressionmethod,reduce

theimageresolution,and(forcertainimageformats)reduce



thenumberofcolors.

FindtheOptimumImageTypeandCompressionQuality

PhotosareoftenbestsavedasJPEGs



Therearemanyimageformatsyoucanchoosefrom.TheJPEG

formatisgoodforphotosandcertainimageswithcomplex

multicolorshapes,asshowninFigure4-5.Yourphotoeditor

mayofferyoudifferentqualitysettingsforsaving,sochoose

thelowestqualitythatyou'recomfortablewith;don'tgotoolow

onthequality,oryourphotowillcontainthekindofheavyJPEG

artifactsshowninFigure4-6.Notethatifyoursourcefile

alreadycontainsheavyJPEGnoise,youcannotremoveitby

justresavingwithahigherqualitysetting.



NOTE

AvoidflatredcolorareaswhensavingasJPEG.This

particularimagecompressionalgorithmoftencreates

heavy,noisyartifactsforred.

TheJPEGqualitysettingsforsavingthisphotoweretoo

low,creatinganunpleasantendresult



ThePNGformatisoptimizedforlineart,certaintypesof

screenshotsthatdon'tcontainlargephotos,andotherless

"complex"pictures,asshowninFigure4-7.PNGisaso-called

losslesscompressionformat,sotheimagedoesn'tlosedetail

whenit'ssaved;JPEG,ontheotherhand,willtypicallylosea

bitofitsqualityeverytimeyousaveitwithdifferent



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Hack 31. Find Images for Your Presentation

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