mvc pdf viewer free : Change pdf to jpg control software utility azure windows asp.net visual studio docu537382-part294

Images
FileSizeandPerformance
InPDLfiles,theimageisusuallythelargestcomponentandcontributesmosttothefilesize.Images
slowdowneverydocumentcreationandmanagementprocess:
• CreatingthePDLfile(xPublish)
• Storageofthefiles(Networkdiskspace)
• Spooling(Networkbandwidthandmaybemakinganothercopyofthebigfiles)
• ProcessingatthePrinter(Printerorserverinfrontoftheprinter)
• Archivingoutput(Archivesystem)
• Retrievalofarchiveoutput(Viewer)
Inmostworkflows,largeimagefilesizesaffectperformanceinmanydifferentareasforeachoutput
file.Ifyouareusingmanyimages,itmakessensetoattempttooptimizethem.
Ingeneral,handlinglargeimageswillhurttheperformanceofanydigitalsystem,soitisalways
intheinterestofuserstoensureyourimagesaredetailedenoughtobegoodquality,andcompact
enoughtolessentheimpactonperformance. Therearethreemajorthingsthateffectimagefile
size: Bitdepth,imagesize,andcompression.
BitDepth
Bitdeptheffectsfilesizeinalinearway.Forexample:
Binary(1-bitperpixel)=1MB
Grayscaleorindexedcolor(8-bitperpixel)=8MB
RGBColorImage(24-bitperpixel)=24MB
CMYKColorimage(32-bitperpixel)=32MB
Asthebitdepthisincreased,thesizeofthefilealsoincreasesbasedonthenumberofbitsperpixel.
ImageSize
Imagesizeeffectsthefilesizeinanon-linearway.Forexample,ifyouhadabinaryimagesizedto
8.5”x11”at300DPI,thetotalnumberofpixelscanbecalculatedasfollows:
8.5x11x300x300=1.05MB
Ifwedoubletheresolutionwemakethefilefourtimesbigger.
8.5x11x600x600=4.02MB
21
Change pdf to jpg - Convert PDF to JPEG images in C#.net, ASP.NET MVC, WinForms, WPF project
How to convert PDF to JPEG using C#.NET PDF to JPEG conversion / converter library control SDK
pdf to jpeg; change file from pdf to jpg
Change pdf to jpg - VB.NET PDF Convert to Jpeg SDK: Convert PDF to JPEG images in vb.net, ASP.NET MVC, WinForms, WPF project
Online Tutorial for PDF to JPEG (JPG) Conversion in VB.NET Image Application
convert pdf to jpg batch; convert pdf pages to jpg online
Images
CroppingImages
Onewaytoreduceimagefilesizeistoensurethattheimageiscroppedtightly.Thisalsoensuresthat
theimageisnotlargerthanexpectedwhenusedinadocument.Insomecases(suchaswithascanned
image),theremaybealotofextrawhitespacearoundtheactualimagethatdoesn’tneedtobe
included.Croppingtheimageensuresthatonlythenecessaryimagedataisincludedintheimagefile.
Compression
Compressionhasbothperformanceadvantagesanddisadvantages.Itcandramaticallyreducefile
sizes,butalsorequiresmoreprocessingtimetoperformcompressionanddecompression.
WithxPression,wehaveoptimizedcompressionanddecompressionsothatinmostcasesthe
performancebenefitsofcompressionoutweightheprocessingtimerequired.Therearetwobasic
typesofimagecompression: LosslessandLossy.
LosslessCompression
Losslesscompressionreferstocompressiontechniquesinwhichnodataislost.ThePKZIP,ZIP,and
TARcompressiontechnologiesareexampleoflosslesscompression.Formosttypesofdata,lossless
compressiontechniquescanreducethespaceneededbyonlyabout50%.Thesecompressionschemes
encoderedundantdatawithadescriptionofthatdata.Forexample:
000000000000000000000000000000000000000000000
Losslesscompressioncancompressthisredundantstringinthisway:32zeros
WhenLosslesscompressiondecompressthestring,itisreproducedexactly.Ifyouthinkofimages
likefaxeddocuments,thereisalotofwhiteareathatwillcompressverywell.Ifyoutrythesame
thingwiththefollowingstring,youwillnoticethatcompressionisnotaseffective:
010101010101010101010101010101010101010101010
Infact,whencompressingnon-repetitivedata,filesizescanactuallybelargeraftercompression
thanbefore.
22
Online Convert Jpeg to PDF file. Best free online export Jpg image
Download Free Trial. Convert a JPG to PDF. Web Security. All your JPG and PDF files will be permanently erased from our servers after one hour.
convert pdf to jpg; bulk pdf to jpg converter online
Online Convert PDF to Jpeg images. Best free online PDF JPEG
Download Free Trial. Convert a PDF File to JPG. Web Security. Your PDF and JPG files will be deleted from our servers an hour after the conversion.
convert pdf picture to jpg; changing pdf file to jpg
Images
LossyCompression
Referstodatacompressiontechniquesinwhichsomeamountofdataislost.Lossycompression
technologiesattempttoeliminateredundantorunnecessaryinformation.Whenyoucompressand
decompressdatawithlossycompression,youmayretrievedatathatisdifferentfromtheoriginal,
butcloseenoughtobeusefulinsomeway.
Lossycompressionismostcommonlyusedtocompressmultimediadata(MP3,video,JPEG).While
youlosedata,thebenefitstofilesizearesubstantial.
Lossycompressionismosteffectiveonphotographicimages,butthelossofqualitymaybemore
noticeablewhentryingtoproducelineartandtext.
RightSizingFiles
Thegeneralprocedureforhandlingperformanceissuesistobuildthesystemasquicklyand
efficientlyaspossible,thentesttheperformance.Iftheperformanceisnotsufficient,youcanlookfor
waystoimproveit.ThisisthecasewhendealingwithimagesinxPression.
Howeveryoumustalsoconsiderthescaleandlifetimeimpactofajob.Ifthejobislargeinscaleor
longinduration,afewexcessivelylargeimagescouldhaveaveryhighlifetimeimpactandshouldbe
dealtwithdespitethefactthattheymeetinitialperformancerequirements.
ResamplingImages
xPublishhastheabilitytoresampleimagestoalowerresolution,whichresultsinsmallerfilesizes.
ResamplingisdoneattheOutputDefinitionlevel.YoucanresampleimagesforAFP,PostScript,
PDF,andTIFFOutputDefinitions.
OutputDefinitionsareoneofthethreecomponentsthatmakeupanoutputstream.Byresampling
imagesinyourOutputDefinition,youcancontrolwhichdocumentsareaffectedbycreatingmultiple
streams.Theprimaryusecaseforthisfeatureisthatitallowsyoutobuildadocumentforoutputin
high-resolutionprint(300-600DPI)andthencreateastreamforPDFthatisatalowerresolution(for
example,96DPI).ThisdramaticallydecreasesfilesizesforPDF.Thedownsideisthatimagequality
andcolorfidelitymaysuffer. Usethisfeaturewithcaution.
Additionally,ICCprofilesarenothonoredwhentheimageisresampled.Donotuseresamplingwith
imagesthatuseICCprofiles.Formoreinformation,seeColorManagement,page16.
23
C# Image Convert: How to Convert Adobe PDF to Jpeg, Png, Bmp, &
String inputFilePath = @"C:\input.pdf"; String outputFilePath = @"C:\output.jpg"; // Convert PDF to jpg. C# sample code for PDF to jpg image conversion.
convert multi page pdf to single jpg; change pdf to jpg
C# Image Convert: How to Convert Tiff Image to Jpeg, Png, Bmp, &
RasterEdge.XDoc.PDF.dll. C:\input.tif"; String outputDirectory = @"C:\output\"; // Convert tiff to jpg and show How to change Tiff image to Bmp image in your C#
pdf to jpg converter; .pdf to .jpg online
Images
MaintainingConsistentColor
Thebiggestprobleminmaintainingconsistentcoloristhesubjectivenatureoftheconversion
betweenRGBandCMYKcolor.Thiswillnotbeanissueformostimages,butifhigh-fidelitycolor
isneeded,followthesesuggestions:
• UseonlyRGBoronlyCMYKcolor.Byeliminatingthisconversion,youensurethecolorswill
alwaysbeconsistent.
• AlwaysincludeimagesthatcanbehandlednativelybythePDL.Ifyoustartwiththeimagetype
thatisnativetoyourPDL,thatimagetypewillbeavailablewhenproducingyourdocuments.
ThisensuresyourcolorsremainconsistentbecausethereisnoneedforxPressiontodoan
automaticconversionofyourimages.
• ICCprofilesareonlyhonoredincertainsituations.Formoreinformation,seeICCColorProfile
Support,page35.
• DonotusetheresamplingfeatureifyouareusingimageswithICCprofiles,theywillnotbe
honored.
SuggestionsforResolution
Imageresolutionisusuallythefirstsettingtoadjustwhentuningforperformance. Asageneral
guideline,theresolutionforphotographicimagesusuallyneverneedstobemorethan200DPI.To
determineanacceptableresolutionforyourimages,printarepresentativeimageat100,125,150,
175,200,225,and250DPI.Comparetheimagesandchoosethelowestresolutionthatmeetsyour
requirements.
Inmanyinstances,itcanbehardtotellthedifferencebetweenimagesabove125DPI.However,this
willbedifferentfordifferenttypesofimages. Forexample,ifyouarereproducingimagesthat
containtextandline-art,theresolutionwillneedtobehigher,buttypicallythebitdepthcanbe
lower.Forthesefilesyourtestcanrangefrom175DPIto400DPIorhigherdependingthequalityof
yourprintingprocess.
RecommendedDPIforcolorimages(notlineart)areasfollows:
• 150DPIAcceptableQuality
• 200DPIGoodQuality
• 250DPIBetterQuality
• 300DPIBestQuality
• 300–600DPIonlyforveryhigh-endoffsetandlaserprintingprocesses
RecommendedDPIforlineart(scansoftext,veryfinelineart)areasfollows:
• 150DPIFaxQuality
• 200DPIGoodQuality
• 250DPIBetterQuality
• 300DPIVeryGoodQuality
• 300–600DPIHigh-endQuality
24
JPG to PNG Converter | Convert JPEG to PNG, Convert PNG to JPG
Allow to change converting image with adjusted width & height; Change image resolution Open JPEG to PNG Converter first; Load JPG images from local folders in
batch convert pdf to jpg; convert pdf into jpg
C# Create PDF from images Library to convert Jpeg, png images to
Batch convert PDF documents from multiple image formats, including Jpg, Png, Bmp, Gif, Tiff, Bitmap, .NET Graphics, and REImage.
changing pdf to jpg file; .net pdf to jpg
Images
ScannedImages
Acommonpracticeforgettingimagesintodigitalformforpublishingistoscanthem.Whenyou
scanimages,itisimportanttoconsiderthefollowing:
• ScannedimageDPIdoesn’thavetoequaltheprinterDPI.Thiscanresultinimagesthataremuch
largerthannecessary.Forexample,ifyourprinterDPIis1200,youshouldstillscanimagesin
atnomorethan300DPI(orthelowestDPIthatgivestherequiredquality). Ifyouscanallthe
imagesinat1200DPI,thatis800DPImoreinformationcontainedineachimagethanismost
likelynecessarytogetqualityoutput.
• ImagesshouldbescannedattheDPIrequiredfortheoutput.LowerDPIimagescan’tberesized
latertoworkforahigherDPIoutput. Resizinga72DPIimageto300DPIwillnotimprovethe
lackofdetailintheedgesoftheimagethatappearsinthe72DPIimage.
• Iftheimageistobeusedinprintoutput,don’tscantheimageat72–96DPI.ThisDPIrange
doesn’thaveenoughresolutiontocreateacceptableprintoutput.
• Ifanimageistobeusedinprintandarchiveoutput,scantheimageattheacceptableprintDPI,
thensavealowerresolutioncopyoftheimageforthearchiveoutput.
ChoosingWhichImageFormattoUse
Aswehavelearned,allimagesarerectangulararraysofpixels.Whyshouldtherebemorethanone
fileformatforstoringthem?Differentformatsarebetterfordifferenttypesofimages,andalsofor
differenttypesofoutputdevices.Asaresult,wehavetoperformamulti-dimensionalanalysisto
resolvetheissue.
WhendecidingwhatimageformattouseinyourxPressiondocuments,considereachoutputtype
thatmaybecreatedwiththedocument.Choosinganimageformatthatissupportedforeachof
therequiredoutputtypesisagoodidea.Forexample,JPEGimagesaresupportedforalmostall
xPressionoutputtypes,soit’sagoodchoicefordocumentsthatwillbeoutputinseveralformats.
SupportedImageTypes
Therearemanythingstoconsiderwhenitcomestousingimagesinyourdocuments. Beforeyou
makeanydecisions,itisimportanttoknowwhatimageformatsthexPressionPublishpublishing
enginesupportsforeachoutputformat.
Iftheoutputformatdoesn’tsupportanimageformat,xPressionwillattempttoconvertittoa
supportedformat.Formoreinformation,seePickingtheRightFormatforthePDL,page36.When
talkingaboutimagesupportinxPression,therearetwotypesofsupport:directandindirect.Directly
supportedimageformatsaresupportedbytheoutputformat,andarepasseddirectlythroughtothe
publishingengine.Indirectlysupportedimageformatsaresupportedbytheoutputformatonlyif
compressedinaspecificfashion.Forindirectlysupportedimageformats,xPressionwillextractthe
necessarydataandembedit,whichmayimpactperformance.
ThefollowingtabledetailsthexPressionimagesupportforeachsupportedoutputformat.
25
JPG to JBIG2 Converter | Convert JPEG to JBIG2, Convert JBIG2 to
Users may easily change image size, rotate image angle, set image rotation in dpi Covert JPG & JBIG2 image with high-quality; Provide user-friendly interface
convert pdf to jpeg; convert pdf to 300 dpi jpg
VB.NET PDF Convert to Images SDK: Convert PDF to png, gif images
Convert PDF to Jpg, Png, Bmp, Gif, Tiff and Bitmap in ASP.NET. Or directly change PDF to Gif image file in VB.NET program with this demo code.
reader pdf to jpeg; batch convert pdf to jpg online
Images
ImageFormat AFP
DOCX
HTML
PCL
PDF/PPML
PostScript
BMP
Unsupported Directly
Supported
Directly
Supported
Unsup-
ported
Unsupported Unsupported
EPS
Unsupported Unsupported d Unsupported Unsup-
ported
Unsup-
ported
Directly
Supported
GIF
Unsupported Directly
Supported
Directly
Supported
Unsup-
ported
Indirectly
Supported
Unsupported
JPEG(JFIF)
Directly
Supported
Directly
Supported
Directly
Supported
Unsup-
ported
Directly
Supported
Directly
Supported
PDF
Unsupported Unsupported d Unsupported Unsup-
ported
Directly
Supported
Unsupported
PNG
Unsupported Directly
Supported
Directly
Supported
Unsup-
ported
Indirectly
Supported
Unsupported
TIFF(Group
4)
Directly
Supported
Unsupported Unsupported Directly
Supported
Directly
Supported
Directly
Supported
TIFF
(Monochrome
)
Indirectly
Supported
Unsup-
ported
Unsup-
ported
Indirectly
Supported
Directly
Supported
Directly
Supported
TIFF
(Grayscale)
Unsup-
ported
Unsup-
ported
Unsup-
ported
Unsup-
ported
Directly
Supported
Directly
Supported
TIFF(Color)
Unsup-
ported
Unsup-
ported
Unsup-
ported
Unsup-
ported
Directly
Supported
Directly
Supported
Note:
• xPressionusesEPSimages,notPostScript(PS)images. . IfyouattempttoimportPSimages
throughxAdmin,xPressionwillcreateanexception. IfyouhavePSimagesyouwanttouse
withxPression,pleaserecreatethemasEPS.
• xPublishdoesnotsupportAFPHighlightcolor.IfxPublishencountersanAFPhighlightcolor
image,itwillbeconvertedtoblackandwhite.
• xPressionsupportsonlyonetypeofCMYKimage.forAFPoutput:CMYKTIFFimagesusing
LZWcompression.
SomeUnsupportedImageTypes
Thefollowingimageformatsandtypesarenotsupported.
ImageType
Description
AnimatedGIFs
AnimatedGIFsarenotsupported.AnimatedGIFsarecomprisedofanumber
ofimagesinthesamefile.Theanimationeffectoccurswhenanapplication,
likeInternetExplorer,switchesbetweentheimages.Ifyouimportananimated
GIF,xPressionextractsonlythefirstimageinthesequence.
26
Images
ImageType
Description
EPS ImagewithTIFF
Proof/Preview
IfyouimportanEPSimagethatcontainsaTIFFprooforpreview,xPression
willonlyimporttheTIFFimagebecausetheTIFFproofprecedestheEPS
imageinthefile.xPressionwilltreattheimageasaTIFFandnotasanEPS.
CertainCompressedTIFFS
xPressiononlysupportsthefollowingcompressions:Uncompressed,Huffman
RLE(CCITT1D),Group4,LZWandPackBitscompressions.
ImageSupportvsFeatureSupport
ThischartshowssomepopularimageformatsandthefeaturesthatxPressioncansupportineach
whentheimageisusedasanexternalimage.Insomecases,iftheimageisembeddedinadocument,
thehostforthedesigntoolmaynotsupportthefeature.Forexample,inxDesignandxPressofor
Word,aCMYKimageembeddedintheadocumentwillbeconvertedtoRGBbyMicrosoftWord.
Formoreinformationontransparency,seeTransparencySupport,page27.
BW
Grayscale
Indexed
RGB
CMYK
Spot
Transparency
JPEG
no
no
no
no
EPS
See
T
r
a
n
s
p
a
r
e
n
c
y
S
u
p
p
o
r
t
PDF
GIF
√*
no
no
no
√*
TIFFColorLZWand
Packbits
no
no
TIFFMonoLZW,G4,
NoCompression
no
no
no
no
no
no
TIFFHuffmanRLE
no
no
no
no
no
no
PNG
no
no
no
BMP
no
no
no
*GIFgrayscaleandtransparencyareonlysupportedforPDFoutput.Theimagemaynotoutput
correctlyinotheroutputtypes.
TransparencySupport
27
Images
SupportfortransparencyinEPSimagesislimitedaccordingtotheoutputformat:
• APF.AFPdoesn’tsupportEPS,andconvertingEPStoasupportedformatforAFPwillprobably
causetransparencytobelost.
• PostScript.TransparencyissupportedforPostScriptoutputfromxDesign,xPressoforAdobe
InDesign,andxPressoforWord.
• PDF.PDFdoesn’tsupportEPS,butdoessupporttransparencyinotherimageformats. . If
transparencyisneedforimagesinPDFoutput,considerusinganotherimageformat.
TIFFdoessupporttransparency;howeverthetransparencythatitproducesisnotsupportedby
xPression.TIFFisaveryopen,flexibleformatthatallowsjustaboutanythingtobestoredwithinit.
Mostapplications,includingxPression,supportonlyasubsetofwhatTIFFcando.
PDLNativeSupport
Ideally,itisbesttochooseimageformatsthatarenativetotheoutputstreamyouarecreating.When
theformatisnativetotheoutputstream,theimagecanbecopiedwithoutdecodingintothePDL.
WhenutilizingthexPublishcontentstampfeaturewithimages,youmustchooseaformatthatis
supportednativelybythePDL.Thefollowingtableidentifieswhichimagetypesandfeaturesare
nativelysupportedforeachPDL.
PDLSupport
Color/FeatureSupport
PDF
PS
AFP
PCL
BW
Gray
In-
dexed
Color
RGB
Color
CMYK
Color
Spot
Color
Trans-
parency
TIFFG4
no
no
no
no
no
no
TIFF
Huffman
RLE
no
no
no
no
no
no
no
TIFFLZW
andPackbits
no
no
no
no
no
no
TIFF
uncomp
no
no
no
no
no
no
JPEG
no
no
no
no
no
EPS
no
no
GIF
no
no
no
no
no
no
PDF
no
no
no
TIFFColor
LZW
no
no
no
no
no
PNG
no
no
no
no
no
no
BMP
no
no
no
no
no
no
no
28
Images
PCL
PCL5doesnotsupportcolor,andonlysupportsblackandwhiteTIFFimages. Togetimagesto
outputinPCL,youmuststartwithaG4Tiffimage.
xPressoforAdobeInDesignImages
WhenimagesareembeddedinanxPressoforAdobeInDesigndocument,aconversionautomatically
occursduringthepackagingprocess.Onlythoseimagesthatareembeddedareconverted,images
thatareexternallyreferencedarenotconvertedduringpackaging.TheInDesignsnapshotfunctionis
usedtoconverteveryembeddedimagetoPNGandJPEG;EPSimagesarealsoconvertedtoPDF.
Eachdifferentimageformatiscontainedinthepackage.Foralloutputformats,exceptPCL,this
conversionprovidesasupportedimageformatforthexPressionPublishpublishingengine.
StoringImagesinthexPressionRepository
WhenyousaveanimageinanxDesigndocument,uploadanimagetothexPressionRepository
throughxAdmin,orimportanimagethroughaPDPX,xPressionstorestheimageinaparticular
format,orseriesofformats.ThefollowingchartsshowshowxPressionstoresyourimages.Formats
highlightedinboldindicatethattheformatistheoriginalfileplacedinthedocument.
Image
Color
Sub
-Type
Format(s)Storedinthe
xPressionRepository
Mono
HuffRLE
Mono
LZW
Mono
Binary
G4
Mono
G4
G4
Mono
G3
G4
TIFF
Color
JPEG
PNG,JPEG
BMP
RGB
BMP,PNG,G4(ifBW),JPEG(if
color)
RGB
EPS
CMYK
JPEG
EPS,JPEG,PNG,PDF
RGB
JPEG
CMYK
JPEG
RGB
PDF
CMYK
PDF,EPS,PNG,JPEG
29
Images
Image
Color
Sub
-Type
Format(s)Storedinthe
xPressionRepository
GIF
Index
GIF,PNG,G4(forBW),JPEG
(forcolor)
PNG
RGB
PNG,G4(forBW),JPEG(for
color)
30
Documents you may be interested
Documents you may be interested