Important
:CompressionControlandFontEmbedControlaretheonlycontrolsavailablefor“Light”versionof
DocuComPDFDriver.
SecurityControl
:TopasswordprotectyourPDFdocuments,simplyselecta“Control”in
thepull-downmenu;orclickthe“Advance”buttontocreate/edit/delete“Security”controls.
WatermarkControl
:Selecta“Watermark”inthepull-downmenu;orclick“Advance”button
tocreate/edit/deletewatermarkcontrols.
Destination
:SeveralOptionsareavailabletostorethetargetPDFfile.Youmayalsosend
e-mailattachmenttorecipientseithersilentlyorlaunchyoure-mailprogram.
DocumentSettings
:Youcanspecify“OpenOptions”and/or“DocumentInfo”forthe
resultingPDFdocument.
About
Showsproductinformation,purchasingdata,licenseagreement,andsupportinghyperlinks–
suchasOnlinePurchase/Register;thisOnlineGuide;OnlineUpdate/Upgrade;andZeon
Contact.
General
Showspagesetup,resolution,scale,andothergeneralsettings.
Pdf format specification - Split, seperate PDF into multiple files in C#.net, ASP.NET, MVC, Ajax, WinForms, WPF
Explain How to Split PDF Document in Visual C#.NET Application
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Pdf format specification - VB.NET PDF File Split Library: Split, seperate PDF into multiple files in vb.net, ASP.NET, MVC, Ajax, WinForms, WPF
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PageLayout
PDFDriversupportsmanystandardandcustompagesizesinportraitorlandscapelayout.
ThedefaultsizeisA4--8
½
-by-11inches.PagesizeallowedinaPDFfileis:
1-by-1inch<pagesize<200-by-200inches
.
Check“
Portrait
”or“
Landscape
”tochoosepageorientation.
Choosepagesizefromthemenu.If
Customsize
isselected,youcanenterthepage
dimensionsandmarginsdirectly.
Important
:Althoughyoucandefinepagelayoutinthiscontrol,butifauthoringapplication–suchas“MS
Word”,choosesadifferentpagelayout.“DocuComPDFDriver”willhonorapplicationsettingsfirst.See“How
applicationsdecidepagelayout”fordetails
AddStandardPaperSize
Clickthe“Edit”buttonbesidesthe“Standard”papersizeselectionboxto“Define/Store/Edit”
yourfrequentlyusedpapersizestoavoidentering“Custom”sizerepeatedly.Youcanenter
any“PaperName”,“Width,Height,Margin”,and“Unit”ofyourchoice.
Limitations
:Duetotheprecisionround-offofconvertingpapersizebetweenDriverand
Windows,addedpaperswithveryclosewidthsandheightsmayconfusetheDriver.Itis
possiblethatDriverfelltomatchapreviousselection.Shouldneverbeabigissueinreal
worldapplications.
Howapplicationdecidespagelayout
Applicationqueriesthesupportedpapersizesofselectedprinter— “DocuComPDFDriver”.
Internally,PDFDriversupportsallstandardpapersizesandalsoCustompapersize.
Applicationdeterminesthemostsuitablesizeforthedocument.Then,askprintertouse
thatsize.ForexampleMSWordbehaveslikethis.
Ifapplicationdoesnotchooseapapersize–current(default)papersizeoftheprinteris
used.
Differentapplicationsmayhavedifferentapproaches.
Resolution
Selectaresolution–oneofScreen,Low(150dpi),Medium(300dpi),High(600dpi),or
1200dpi,tobeusedtocreatePDFdocument.Thissettinginfluences
characterspacing
,
line
breaks
,and
imagequality
.Usually,higherresolutionproducesmoreaccurate
layout— possiblywithbiggerfilesize.
Note
:MSExcelmaybreaklinesorevenpagesdifferentlyifyouchoosealowresolution,suchasScreenor
150dpi.
Characterpositioning
Screento300dpi
:Forresolutionbelow300dpi,PDFDrivertrytosetwholelineofcharacters
byevenlydistribute(orsubtract)spacingbetweenthem,withoutconsideringtheexact
positionofeachindividualcharacter— becauseunderlowerresolution,fewerpixelsare
availabletocomputetherequiredprecision.
300dpiandhigher
:Forresolutionabove300dpi(include),PDFDriveraccuratelypositioneach
characterrequestedbyapplicationprogram.
TIFF Image Viewer| What is TIFF
The TIFF specification contains two parts: Baseline TIFF (the edit and processing images with TIFF format and other such as Bitmap, Png, Gif, Tiff, PDF, MS-Word
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DocImage SDK for .NET: Web Document Image Viewer Online Demo
Microsoft PowerPoint: PPTX, PPS, PPSX; PDF: Portable Document Format; TIFF: Tagged Image File Format; XPS: XML Paper Specification. Supported Browers: IE9+;
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GraphicsandImage
Windowsusesthe“Resolution”settingtopreparegraphicsorimagedata.Forexample,
WordArtwillgeneratemoredetailed(larger)imagedatatomatchthehigherresolutionyou
picked.
Important:
Lowresolutionisidealforscreenviewing.However,ifhigh-qualitypaper-print,ortheaccuratecontrol
ofcharacterpositionisrequired,youshouldchooseresolutionabove300dpi(include).
Scale
EnterthezoomfactortoenlargeorreducepagecontentsofthetargetPDFfile–valuesare
between1%to1000%--defaultis100%.
ViewresultingPDF
CheckthisoptiontodisplayPDFfileaftercompletion.
OptimizeforOnlyMSOffice(95/98)
ThisoptionisonlyavailableforcertainversionofDocuComPDFDriverfor95/98/ME.Itis
necessarytoimprovethegraphicsqualityofMSOfficeprograms.Wesuggestyoutoselect
thisoptiononlywhenthereareproblemswithyourMSOfficecreatedPDFdocuments.
Important
:Besuretoturnoffthisoptionwhenusingotherapplications.
GIF Image Viewer| What is GIF
routines according to the latest GIF specification to meet edit and processing images with Gif format and other such as Bitmap, Png, Gif, Tiff, PDF, MS-Word
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PDFSettings
AllPDFcreationrelatedcontrolsettingsaregroupedinthistab:
Compatiblewith
Chooseeither“
PDFspec.1.3(4.x)
”,“
PDFspec.1.4(5.x)
”or“
PDFspec.1.5(6.x)
”tocreate
compatiblePDFfiles.Selectingthelatest“PDF1.5”optionwillcreatePDFspec.1.5
conformingdocumentswithcomparablysmallerfilesize,buttheymaynotberecognizableby
earlierversionofPDFreaderprograms.
Usuallynewspecificationpromiseshigherqualityandsmallerfilesizethanearlier
specification..
Important
:Youmustselectcorrect“Compatible”settingforthetargetPDFviewerprogram.Earlierversionsofthe
PDFreaderprogramCANNOTREADdocumentswhichconformingtonewerversionofspecification.
OptimizeforfastWebviewing
Choosethisoptionto“
Linearize
”resultPDFfileforfastWebviewing.WithacompatiblePDF
viewerprogram,youcanopen(read)theresultPDFfilepage-at-a-timeremotelywithout
waitingforthedownloadingofthewholedocument.
Note
:Thisfeatureisnotavailablefor“LightEdition”.
VB Imaging - EAN-8 Generating Tutorial
compatible with the latest GS1 General Specification, with the Besides the PNG image format, other supported common 8 on defined page area of a PDF, multi-page
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VB.NET Image: Create Code 11 Barcode on Picture & Document Using
REFile.SaveDocumentFile(doc, "c:/code11.pdf", New PDFEncoder()). Data, Valid: 0-9, -, Format, PNG GIF JPEG. to the ISO/IEC international specification, the minimum
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CompressionControl
Clickthe“ControlTitle”toselectapreviouslydefined“Control”fromthepull-downmenu;or
Clickthe“
Advance
”buttontoshowthe“CompressionControl”dialogbox,whereyoucan
create,edit,ordeletecompressioncontrols.
CompressionSettingsdialog
OnemajorbenefitofusingPDFdocumentsisthegreatlyreducedfilesizecomparingwith
otherformats— akeyfactorforelectronicdistribution.
DocuComPDFcreationtoolsallowyoutocompressimages(bitmaps),text,andgraphics
(lineart)usingsuitable
Compression
and
Re-sampling
methodsofyourchoice.
Sincetheeffectivenessofcompressionishighlydatadependent.Forthebestresult,you
mightwanttotrydifferentcompressionsettingfordifferentkindofdatasources.
Allavailablecontrolsarelistedinthe“ListofControls”box.Clicktoselect(highlight)acontrol
tovieworedititssettings.Use“
New
”buttontocreateanewcontrol;“
Default
”toresetcurrent
settings;or“
Delete
”toremoveselectedcontrol.
Note
:CompressTextandGraphicsusingZIP.
UseAutoSettings–QualityLevel
Werecommendusingthe“AutoSettings”andrelyingonPDFDrivertorecognizetheimage
colordepthandchoosethebestcompressionsettingsformostviewingcases.Version7
comeswithanewsmarterimagecompressionmodule,whichsimplyallowsusertochoosea
C# Imaging - QR Code Image Generation Tutorial
to draw, insert QR Codes in PDF, TIFF, MS C# code to adjust bar code image format, location, resolution ISO+IEC+18004 QR Code bar code symbology specification.
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C# Imaging - EAN-8 Generating Tutorial
compatible with the latest GS1 General Specification, with the Besides the PNG image format, other supported common 8 on defined page area of a PDF, multi-page
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“QualityLevel”--tellsthetradeoffbetweenimagequalityandfilesize;andv7willrecognize
imagecolordepthandapplythebestcompressionsettingsforeachimage.
Valid“
QualityLevels
”arefrom“0”to100.Youcanfreelymovethescaletoexperiencethe
rate.Tipsare:whenclosingto0,imagesdegradetoplaceholder;whilemovingupto100,
therewillbenoqualitylossatall.
Generallyspeaking,Driverwill“Down-Sample”theimagefirst–150dpiforcolorandgray,
300forblack-and-whiteimage;andthenchooseeitherJPEG(Compatiblewith1.3,1.4)or
JPEG2000(Compatiblewith1.5)forcolorandgrayscaleimage.Indexcolorimageswill
alwaysuse“ZIP”compressionmethod.
UseCustomSettings
Ifdesirable,youcanchoosethisoptiontodecidethecompressionmethods,qualitylevel,and
down-samplingbyyourself.
1. Choose(use)compressionmethodsfromthepull-downmenuforeachimagetype(Color,
Gray,andMonochrome).
2. Choose(use)qualitylevelfromthepull-downmenu.
3. Select(use)ordeselect(nottouse)
Re-samplingmethod
foreachimagetype;choose
either“Down-sampling”or“Sub-sampling”fromthepull-downmenu;thenenterthe
minimumresolutionforre-sampling.
4. Click“Default”torestorethe
DefaultControlSettings
.
5. ClickOKtoacceptthesettings.
SeeCompressionBasicsfordetaildiscussionofeachcompressionoption.
CompressionBasics
OnemajorbenefitofusingPDFdocumentsisthegreatlyreducedsizecomparingwithother
formats— animportantconsiderationwhenmovingdocumentsthroughtheInternet.
TextandGraphics
Compresstextandgraphics(lineart)--everythingotherthanbitmapimages,byusingthe
ZIP
compression
methodwithnoinformationloses.Ittakesslightlylongertimetodisplay
compresseddata.
Note
:Charactershapesordrawingsthatarescanned-imagesorcreatedbyusingsomepaintingorphoto
programsareconsideredasimages.
AutoCompression
 UseJPEG(PDF1.3,1.4)orJPEG2000(PDF1.5)tocompress8-bitgrayscaleand8-bit,
16-bit,and24-bitcolorimagesthathavecontinuous,smoothcolortones.
 UseZIPtocompress8-bitgrayscaleand16-bit,24-bitcolorimagesthathavesharpcolor
changes.
 UseZIPtocompress2-bit,4-bitgrayscaleand4-bitcolorimages,and8-bitindexedcolor
images.
Usually,thedefaultsettingof“
50%
”compressionrategeneratesthebestresults.
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by GS1 in its system standards using Code 128 barcode specification. text //Generate EAN 128 barcodes in GIF image format ean128.generateBarcodeToImageFile
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Monochromeimage
Severallosslesscompressionoptionsareavailableformonochromeimages
(black-and-white):CCITT,ZIP,andRunLength.Youcanalsousere-samplingforreducing
thesizeofmonochromeimages.
Scannedtextordrawing
Monochromeimagesshouldonlybescannedasmonochromeandnotasgrayscale.Ifyou
savescannedtextasgrayscale–sometimesitissystemdefault,andcompressgrayscale
textwiththeJPEG(lossy)method.Youmayexperienceterriblymuddyresultandmaybe
totallyunreadable.
ZIP(deflate,zlib)method
UseZIPtocompressimage.Thismethodissuitableforscreenshots,dialogboxes,drawings,
orrelativelysmallbitmapimages..
ZIPisdesignedtobeafree,general-purpose,andlegallyunencumbered— thatis,not
coveredbyanypatents.Itisalosslessdata-compressionlibraryforuseonvirtuallyany
computerhardwareandoperatingsystem.TheZIPdataformatisitselfportableacross
platforms.
TheZIPcompressionmethodessentiallyneverexpandsthedata.Thezlib’smemoryfootprint
isalsoindependentoftheinputdataandcanbereduced,ifnecessary,atsomecostin
compression.
LZW
Thiscompressionmethodproducesthebestcompressionresultsforimagesthatcontain
repeatingpatterns.
Note
:DocuComdonotgenerateLZWcompressedPDFdocuments.
CCITT
Thiscompressionmethodisageneral-purposemethodthatproducesgoodcompressionfor
mosttypesofmonochromeimages.
RunLength
Thiscompressionmethodproducesthebestresultsforimagesthatcontainlargeareasof
solidblackorwhite.
JPEG
UseJPEGtocompressimagedata.Jpegissuitableforhighresolutionandlargephoto
images.
JPEGusesatechnique--“DCT”,tocompressorremoveimagedatathatarelesssensitiveto
humaneyes,wherekeeporcompresslessinthehuman-sensitiveimagedataarea.This
methodtriestoreducetheimagesizewiththeleastqualityloss.
Five(5)presetcompressionlevelsofJPEGareavailable–High(Quality),High-medium,
Medium,Medium-Low,Low.Usually,HighorMedium-Highcompressionresultsarevery
muchsimilartotheoriginal.Ordinaryviewercouldnottellthedifferences.However,atLowor
Medium-Lowcompression,theimageusuallybecomesblockyandunsatisfactory.
Important
:Unfortunately,theJPEGcompressionmethodishighlydatadependent.Youmayneedtotestdifferent
settingstofindthebestoptionforyourimagedata.
Startingfrom6.x,weuseIJGcodesforJPEGcompression.Earlierversionsuseourownimplementation.
JPEG2000
ThisisanewmethodavailableforPDFspec.1.5,andisalsosuitableforhighresolutionand
largephotoimages.JPEG2000usesthe“Wavelet”techniquetocompressorremoveimage
datathatarelesssensitivetohumaneyes.Inmostofcases,JPEG2000isbetterthanJPEG
intermsofqualityandsize.
Re-Sampling
Resampleisonewaytoreducetheimagesizebycombiningseveralneighboringpixelsto
makeasinglepixel.Thismethodproducesasmallerbitmapwithlossofdetails.
Re-sampleinwholenumberdivisions
:Imagesarere-sampledinwholenumberdivisionsof
theiroriginalresolutions.Forexample,a300dpiimagecanbere-sampledto150dpi(divide
by2),100dpi(divideby3),75dpi,60dpi,etc.
Resolution
:Youcancontrolre-samplingbyspecifyingaminimumresolution.Imageis
re-sampledasmuchaspossiblebutnotbelowthatminimumresolution.Forexample,givena
minimumresolutionof72dpi,a300dpiimageisdown-sampledto75dpi(divideby4)butnot
60dpi(divideby5),andan180dpiimagecannotbedown-sampledwhenminimumresolution
is100dpi.
Choosethecorrectminimumresolutionforanacceptablefilesizeandimagequality.
Down-sampling
Use“Down-sample”toreducetheresolutionofimagetothespecifieddpisettingbyaveraging
thepixelcolorofasampleareaandreplacingthatareawithapixeloftheaveragedcolor.
Forindexedcolor
:PDFDriverwillre-buildthecolorpalettetomaintainthebestimagequality,
whennecessary.However,rebuildingcolorpaletterequiresmemoryspaceandmoreCPU
time.
Sub-sampling
Use“Sub-sampling”toreducetheresolutionoftheimagetothespecifieddpisettingby
choosingapixelinthecenterofthesampleareaandreplacingthatareawiththepixel
chosen.
Sub-samplingdonotaveragepixelvalues;thereforearefasterthandown-sampling.
FontEmbedControl
PDFDriverallowsyoutoincludefontsinsidePDFdocuments.BysendingPDFdocuments
togetherwithfontswill:
Promisesthesamedocumentlayoutandappearanceatreaderside,
regardlessofwhethernecessaryfontsareinstalledinreaders’computer.
Selectfont
Sub-setting
optiontoincludeonlythosecharactersofafontthatareusedinthe
PDFdocument,toreducedocumentsize.
See“FontBasics”tounderstandcomputerfonts.
Note
:Sub-settingisalwaystruewhenembeddingDBCSfonts.
Stepstoembedfonts
PDFDrivercanembedTrueTypefontsinstalledinWindows–exceptfontsthatdonotallow
embedding.Usually,youshouldembedalldisplay-facefontstoavoidfontsubstitution.
Embedallfonts:
Choose“EmbedAllFonts”checkboxtoembedallfontsusedina
document.The“AlwaysEmbed”listwillbedisabledifthisoptionischecked.
Embedspecificfonts:
Selectspecificfontsthatyouwanttoembed.Inthe“AvailableFont”
listclick“>>”toincludeselectedfontinthe
AlwaysEmbed
list.
Embedallbutspecificfonts:
Select“EmbedAllFonts”first,thenselectfontsinthe
“AvailableFont”list,andclick“>>”toincludethemin
NeverEmbed
list.
Note
:“Marked”fontsinNeverEmbedlistarefontsthatdonotallowembedding(byfont
vendors);youcannotremovemarkedfontsfromNeverEmbedlist.Otherwiseyoumay
selectafontandclickthe“<<”or“>>”buttonsto“Add”or“Remove”fontsinthe“Always
Embed”or“NeverEmbed”list.
Subsetfonts:
Select(check)thisoptiontoincludeonlythosecharactersofafontthatare
actuallyusedinaPDFdocument.A“threshold”isspecifiedtotelliffont-subsetis
necessary.Ifthepercentageofusedcharacters(comparewithtotalcharactersofthe
particularfont)exceedsthisthreshold,theentirefontisembedded.
Important
:An“AllowEmbedding”flagdefinedinTrueTypespecificationtellswhetherthefontvendorallowsthe
embeddingoftheirfonts.DocuComPDFDriverstrictlyfollowsthisguideline.Youmayswitchtoadifferentfont,if
theembeddingisdefinitelynecessary.
ResettoDefault
Click“
Default
”torestoreDefaultConversionControls.Bydoingthis,PDFDriverwillcopy
“DefaultConversionControls”–preparedbytheinstallingprogramoryoursystem
administrator,toyourfolder.AllcurrentConversionControlswillbereplaced.
FontBasics
PDFdocumentssupportmanypopularfontformats–suchasTrueType
,Type1,Type2(CFF,
CID),Type3,andMMfonts,fortherenderingofhighqualitycharactersonscreenorprinter.
Fontnames,characterwidth,andotherfontattributesarekeptinPDFdocuments.If
necessary,youcanalsoembed“FontOutlines”fordisplayingwiththeexactfontsonother
viewer’sscreen.
WindowsFonts
AllversionsofWindowscomewithbasic(13)Latin
TrueType
fonts
.Inadditiontothat,many
applicationsandinternationalversionsofWindowsaddmorefontsintoyoursystem.Windows
TrueType
softwarereadthoseTrueType
fontsandcreatescharactersfordisplayand
printing.
Note
:UseWindowsutilitytocheckforinstalledTrueType
fonts.
FontSubstitution
WhenafontusedinPDFdocumentisnotavailable(notembeddedinPDFfile,andnot
installedinthesystem)--aLook-alikesubstitutefontisused.Thesubstitutefontis
automaticallycreatedbyPDFviewerprogramtomimictheoriginalfonts.PDFviewer
programusescharacterwidthandpositioninformationmaintainedinPDFdocumentto
displaysubstitutefont.Ifcharacterwidthofthesubstituteisdifferentfromtheoriginalfont,
charactersmayoverlaporbreakapart.However,theoriginallinebreaksareretained
Type1(andMM),Type2(CFF,CID)fonts
TheyarePostScript
outlinefontsusedbyPostScript
printersthatmaycontainhintsto
displaycleartypeinsmallsize.
Type3font
OutlinefontsthatarecreatedbyusingthePostScript
languageprogram— usedforspecially
designedlogosordecorativefonts.Type3fontsmustalwaysbeembedded.
TrueTypefonts
Widelyusedoutlinefontswithmathematicallydescribedcharactercontour.Youcanenlarge
orreduceTrueType
characterswithsmoothoutlines.
FontSizeandembedding
BothType1
andTrueType
alphabeticfontstake30Kto70Kstoragespaces,andType3
fontsmaybebigger.However,DBCSAsianfontsusuallyconsumeseveralMEGAbytesof
space.Itdependsonthequalityofdisplayandcostofstorage(ortransmission)todecide
whethertoembedDBCSfontsinPDFdocuments.
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