Spec Coverage

Tracks implementation status of ISO 32000-2:2020 (PDF 2.0) objects against phpdftk/phpdftk.

Legend: ✓ Implemented · ~ Partial · ✗ Missing

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Document Structure

Catalog (/Type /Catalog)

Source: packages/pdf/core/src/Document/Catalog.php

Field	Status	Notes
/Pages	✓
/Version	✓
/Outlines	✓	Outline + OutlineItem classes implemented
/Names	✓	Reference stored; NameTree class available
/Dests	✓	Ref stored; Destination class available
/ViewerPreferences	✓
/PageLayout	✓
/PageMode	✓
/OpenAction	✓
/AcroForm	✓
/Metadata	✓	Reference stored; XMP stream via phpdftk/xmp
/MarkInfo	✓	MarkInfo class on Catalog::$markInfo
/Lang	✓
/AA	✓	Reference stored
/URI	✓	Inline dict
/SpiderInfo	✓	Reference stored
/OutputIntents	✓	Array of OutputIntent refs
/PieceInfo	✓	Inline dict
/OCProperties	✓	Reference stored
/Perms	✓	Inline dict
/Legal	✓	Inline dict
/Requirements	✓	Array stored
/Collection	✓	Reference stored
/NeedsRendering	✓
/DSS	✓	DSS class + DssBuilder + LtvSigner for PAdES LTV — certs, OCSPs, CRLs, VRI entries
/Extensions	✓	Developer extensions dict
/AF	✓	Associated files array
/DPartRoot	✓	DPartRoot reference (PDF 2.0)

Page Tree (/Type /Pages)

Source: packages/pdf/core/src/Document/PageTree.php

Field	Status	Notes
/Type	✓
/Parent	✓
/Kids	✓
/Count	✓
/MediaBox	✓
/Resources	✓
/Rotate	✓
/CropBox	✓	Inheritable box
/BleedBox	✓	Inheritable box
/TrimBox	✓	Inheritable box
/ArtBox	✓	Inheritable box
/BoxColorInfo	✓	Inline dict
/Group	✓	Reference stored
/Thumb	✓	Reference stored
/B	✓	Article bead refs
/Dur	✓
/Trans	✓	TransitionDict or Serializable
/Annots	✓	Inheritable annotations
/AA	✓	Reference stored
/Metadata	✓	XMP stream reference
/PieceInfo	✓	Inline dict
/StructParents	✓
/ID	✓
/PZ	✓
/SeparationInfo	✓	Inline dict
/Tabs	✓
/TemplateInstantiated	✓
/PresSteps	✓	Reference stored
/UserUnit	✓
/VP	✓	Viewport array

Page (/Type /Page)

Source: packages/pdf/core/src/Document/Page.php

Field	Status	Notes
/Type	✓
/Parent	✓
/Resources	✓
/MediaBox	✓
/CropBox	✓
/BleedBox	✓
/TrimBox	✓
/ArtBox	✓
/Contents	✓
/Rotate	✓
/Annots	✓
/Group	✓	Reference stored
/Thumb	✓	Reference stored
/UserUnit	✓
/StructParents	✓
/Trans	✓	TransitionDict class; S, D, Dm, M, Di, SS, B
/Dur	✓
/BoxColorInfo	✓	Typed BoxColorInfo + BoxStyle (§14.11.2)
/B	✓	Article beads
/AF	✓	Associated files
/OutputIntents	✓	Page-level output intents
/DPart	✓	Document part reference (PDF 2.0)
/AA	✓	Reference stored
/Metadata	✓	XMP stream reference on page
/PieceInfo	✓	Reference stored
/ID	✓
/PZ	✓
/SeparationInfo	✓	Inline dict
/Tabs	✓
/TemplateInstantiated	✓
/PresSteps	✓	Reference stored
/VP	✓	Viewport array

Info Dictionary

Source: packages/pdf/core/src/Document/Info.php

Field	Status	Notes
/Title	✓
/Author	✓
/Subject	✓
/Keywords	✓
/Creator	✓
/Producer	✓
/CreationDate	✓
/ModDate	✓
/Trapped	✓

Viewer Preferences

Source: packages/pdf/core/src/Document/ViewerPreferences.php

Field	Status	Notes
/HideToolbar	✓
/HideMenubar	✓
/HideWindowUI	✓
/FitWindow	✓
/CenterWindow	✓
/DisplayDocTitle	✓
/NonFullScreenPageMode	✓
/Direction	✓
/ViewArea	✓
/ViewClip	✓
/PrintArea	✓
/PrintClip	✓
/PrintScaling	✓
/Duplex	✓
/PickTrayByPDFSize	✓
/PrintPageRange	✓
/NumCopies	✓

Missing Document Structure Objects

Object	Status	Notes
Outline (/Type /Outlines)	✓	First, Last, Count; PdfWriter::setOutline() wires to Catalog
OutlineItem	✓	Title, Parent, Prev, Next, First, Last, Count, Dest, A, C, F
PageLabel (/Type /PageLabel)	✓	S, P, St; PdfWriter::setPageLabels() builds inline number tree
Named destinations	✓	PdfWriter::setNamedDestinations() with NameTree
Explicit destinations	✓	Destination class with static factory methods for all 8 types
OutputIntent (/Type /OutputIntent)	✓	S, OutputConditionIdentifier, RegistryName, Info, DestOutputProfile
OCG (/Type /OCG)	✓	Name, Intent, Usage; extends PdfObject
OCMD (/Type /OCMD)	✓	OCGs, P, VE; extends PdfObject
OCProperties	✓	OCGs, D, Configs; extends PdfObject
TransitionDict (/Type /Trans)	✓	S, D, Dm, M, Di, SS, B; assigned to Page::$transition
GroupAttributes	✓	S, CS, I, K; implements Serializable
NameTree	✓	Kids, Names, Limits; extends PdfObject
NumberTree	✓	Kids, Nums, Limits; extends PdfObject
MarkInfo dict	✓	Marked, UserProperties, Suspects; assigned to Catalog::$markInfo
Collection (/Type /Collection)	✓	Schema, D, View, Sort; extends PdfObject
CollectionItem (/Type /CollectionItem)	✓	Field values dict; extends PdfObject
CollectionSchema (/Type /CollectionSchema)	✓	Field definitions; extends PdfObject
Thread (/Type /Thread)	✓	I, F; extends PdfObject
Bead (/Type /Bead)	✓	T, N, V, P, R; extends PdfObject
StructTreeRoot (/Type /StructTreeRoot)	✓	K, IDTree, ParentTree, RoleMap, ClassMap; extends PdfObject
StructElem (/Type /StructElem)	✓	S, P, ID, Pg, K, A, C, R, T, Lang, Alt, E, ActualText; extends PdfObject
ObjectRef (/Type /OBJR)	✓	Pg, Obj; extends PdfObject
Cross-reference stream (/Type /XRef)	✓	Size, Index, Prev, W, Root, Info, ID; binary entry packing
Object stream (/Type /ObjStm)	✓	N, First, Extends; packs compressed indirect objects

---

Fonts

Font (/Type /Font) — Common Fields

Source: packages/pdf/core/src/Font/Font.php

Field	Status	Notes
/Type	✓
/Subtype	✓
/BaseFont	✓
/FirstChar	✓	Auto-populated from AFM data
/LastChar	✓	Auto-populated from AFM data
/Widths	✓	Auto-populated from AFM data
/FontDescriptor	✓
/Encoding	✓
/ToUnicode	✓	CMap stream generated from TrueType cmap table

Font Subtypes

Subtype	Class	Source	Status	Notes
/Type1	Type1Font	Type1Font.php	✓	Includes standard 14 with AFM widths
/TrueType	TrueTypeFont	TrueTypeFont.php	✓	Full font program embedding via /FontFile2
/Type0	Type0Font	Type0Font.php	✓	Composite font
/CIDFontType0	CIDFontType0Font	CIDFontType0Font.php	✓	Type 1/CFF descendant of Type 0 (enforced subclass)
/CIDFontType2	CIDFontType2Font	CIDFontType2Font.php	✓	TrueType descendant of Type 0; /CIDToGIDMap supported
/MMType1	MMType1Font	MMType1Font.php	✓	Multiple Master; encodes spaces in instance name as underscore
/Type3	Type3Font	Type3Font.php	✓	FontBBox, FontMatrix, CharProcs, Encoding, Resources

FontDescriptor (/Type /FontDescriptor)

Source: packages/pdf/core/src/Font/FontDescriptor.php

Field	Status	Notes
/FontName	✓
/FontFamily	✓
/FontStretch	✓
/FontWeight	✓
/Flags	✓
/FontBBox	✓
/ItalicAngle	✓
/Ascent	✓
/Descent	✓
/Leading	✓
/CapHeight	✓
/XHeight	✓
/StemV	✓
/StemH	✓
/AvgWidth	✓
/MaxWidth	✓
/MissingWidth	✓
/FontFile	✓	Type 1 font program embedding via Type1Font::fromFile() + Type1FontFile
/FontFile2	✓	TrueType font program embedding via TrueTypeFont::fromFile()
/FontFile3	✓	CFF font program embedding via CFFFontFile
/CharSet	✓

Encoding (/Type /Encoding)

Source: packages/pdf/core/src/Font/Encoding.php

Field	Status	Notes
/BaseEncoding	✓
/Differences	✓

Missing Font Objects

Object	Status	Notes
CIDSystemInfo dict	✓	Registry, Ordering, Supplement; typed on CIDFont::$cidSystemInfo
CMap stream (/Type /CMap)	✓	CMapName, CIDSystemInfo, WMode; CMapStream class
ToUnicode CMap stream	✓	Generated from TrueType cmap table; WinAnsi byte → Unicode mapping
TrueType font embedding	✓	Full font program embedded via /FontFile2; TrueTypeFont::fromFile()
Font subsetting	✓	TrueTypeSubsetter implemented
OpenType font support	✓	OpenTypeParser + CFFFontFile via /FontFile3
Type 1 font parsing	✓	Type1Parser — PFB/PFA formats, Type1Font::fromFile() factory
WOFF 1.0 decompression	✓	WoffParser — WOFF→sfnt conversion
WOFF 2.0 decompression	✓	Woff2Parser — Brotli decompression, table transforms, sfnt reconstruction
Variable font detection	✓	TrueTypeParser::parseFvar() — axes, named instances, isVariableFont

---

Annotations (/Type /Annot)

Source: packages/pdf/core/src/Annotation/

Common Base Fields

Field	Status	Notes
/Type	✓
/Subtype	✓
/Rect	✓
/Contents	✓
/P	✓	Page reference
/NM	✓	Annotation name
/M	✓	Modification date
/F	✓	Flags
/AP	✓	Appearance dict reference
/AS	✓	Appearance state
/Border	✓
/C	✓	Color
/StructParent	✓
/OC	✓	Optional content
/AF	✓	Associated files
/ca	✓	Constant opacity
/BM	✓	Blend mode
/Lang	✓	Language

Markup Annotation Base Fields (§12.5.6.2 Table 170)

Source: packages/pdf/core/src/Annotation/MarkupAnnotation.php

Field	Status	Notes
/T	✓	Text label (author) on MarkupAnnotation
/Popup	✓	Linked popup annotation reference
/CA	✓	Constant opacity override on markup
/RC	✓	Rich content stream
/CreationDate	✓
/IRT	✓	In-reply-to chaining
/Subj	✓	Short description
/RT	✓	Reply type (R / Group)
/IT	✓	Intent (e.g. FreeTextCallout, PolygonCloud, LineArrow)
/ExData	✓	External data dict

All 17 markup annotation subclasses (TextAnnotation, FreeTextAnnotation, LineAnnotation, SquareAnnotation, CircleAnnotation, PolygonAnnotation, PolyLineAnnotation, HighlightAnnotation, UnderlineAnnotation, SquigglyAnnotation, StrikeOutAnnotation, StampAnnotation, CaretAnnotation, InkAnnotation, FileAttachmentAnnotation, SoundAnnotation, RedactAnnotation) extend MarkupAnnotation and inherit these fields.

Annotation Subtypes

Subtype	Class	Source	Status	Notes
/Text	TextAnnotation	TextAnnotation.php	✓	Open, Name, State, StateModel
/Link	LinkAnnotation	LinkAnnotation.php	✓	Dest, H, PA, QuadPoints, BS, A
/FreeText	FreeTextAnnotation	FreeTextAnnotation.php	✓	DA, Q, RC, DS, CL, IT, BE, RD, BS, LE
/Highlight	HighlightAnnotation	HighlightAnnotation.php	✓	QuadPoints
/Stamp	StampAnnotation	StampAnnotation.php	✓	Name
/Ink	InkAnnotation	InkAnnotation.php	✓	InkList, BS
/Popup	PopupAnnotation	PopupAnnotation.php	✓	Parent, Open
/Widget	WidgetAnnotation	WidgetAnnotation.php	✓	H, MK, A, AA, BS, Parent
/Line	LineAnnotation	LineAnnotation.php	✓	L, LE, IC, LL, LLE, Cap, IT, LLO, CP, Measure, CO
/Square	SquareAnnotation	SquareAnnotation.php	✓	IC, BE, RD, Measure
/Circle	CircleAnnotation	CircleAnnotation.php	✓	IC, BE, RD, Measure
/Polygon	PolygonAnnotation	PolygonAnnotation.php	✓	Vertices, LE, IC, BE, IT, Measure
/PolyLine	PolyLineAnnotation	PolyLineAnnotation.php	✓	Vertices, LE, IC, BE, IT, Measure
/Underline	UnderlineAnnotation	UnderlineAnnotation.php	✓	QuadPoints
/Squiggly	SquigglyAnnotation	SquigglyAnnotation.php	✓	QuadPoints
/StrikeOut	StrikeOutAnnotation	StrikeOutAnnotation.php	✓	QuadPoints
/Caret	CaretAnnotation	CaretAnnotation.php	✓	RD, Sy
/FileAttachment	FileAttachmentAnnotation	FileAttachmentAnnotation.php	✓	FS, Name
/Sound	SoundAnnotation	SoundAnnotation.php	✓	Sound, Name
/Movie	MovieAnnotation	MovieAnnotation.php	✓	T, Movie, A
/Screen	ScreenAnnotation	ScreenAnnotation.php	✓	T, MK, A, AA
/PrinterMark	PrinterMarkAnnotation	PrinterMarkAnnotation.php	✓	MN
/TrapNet	TrapNetAnnotation	TrapNetAnnotation.php	✓	LastModified, Version, AnnotStates, FontFauxing
/Watermark	WatermarkAnnotation	WatermarkAnnotation.php	✓	FixedPrint
/3D	ThreeDAnnotation	ThreeDAnnotation.php	✓	3DD, 3DV, 3DA, 3DI, 3DB
/Redact	RedactAnnotation	RedactAnnotation.php	✓	QuadPoints, IC, RO, OverlayText, Repeat, DA, Q
/Projection	ProjectionAnnotation	ProjectionAnnotation.php	✓
/RichMedia	RichMediaAnnotation	RichMediaAnnotation.php	✓	RichMediaSettings, RichMediaContent

Supporting Annotation Dictionaries

Object	Status	Notes
AppearanceDict (AP)	✓	N, R, D; implements Serializable
AppearanceCharacteristics (MK)	✓	R, BC, BG, CA, RC, AC, I, RI, IX, IF, TP; implements Serializable
BorderStyle (BS)	✓	W, S, D; Annotation::$bs accepts it directly
BorderEffect (BE)	✓	S, I; FreeTextAnnotation::$be accepts it directly

---

Actions

Source: packages/pdf/core/src/Action/

/S Value	Class	Source	Status	Notes
/GoTo	GoToAction	GoToAction.php	✓	D
/URI	URIAction	URIAction.php	✓	URI, IsMap
/Named	NamedAction	NamedAction.php	✓	N
/JavaScript	JavaScriptAction	JavaScriptAction.php	✓	JS
/GoToR	GoToRAction	GoToRAction.php	✓	F, D, NewWindow
/GoToE	GoToEAction	GoToEAction.php	✓	F, D, NewWindow, T
/GoToDP	GoToDPAction	GoToDPAction.php	✓	D, DP
/Launch	LaunchAction	LaunchAction.php	✓	F, Win, Mac, Unix, NewWindow
/Thread	ThreadAction	ThreadAction.php	✓	F, D, B
/Sound	SoundAction	SoundAction.php	✓	Sound, Volume, Synchronous, Repeat, Mix
/Movie	MovieAction	MovieAction.php	✓	Annotation, T, Operation
/Hide	HideAction	HideAction.php	✓	T, H
/SubmitForm	SubmitFormAction	SubmitFormAction.php	✓	F, Fields, Flags
/ResetForm	ResetFormAction	ResetFormAction.php	✓	Fields, Flags
/ImportData	ImportDataAction	ImportDataAction.php	✓	F
/SetOCGState	SetOCGStateAction	SetOCGStateAction.php	✓	State, PreserveRB
/Rendition	RenditionAction	RenditionAction.php	✓	OP, R, AN, JS
/Trans	TransAction	TransAction.php	✓	Trans
/GoTo3DView	GoTo3DViewAction	GoTo3DViewAction.php	✓	TA, V
/RichMediaExecute	RichMediaExecuteAction	RichMediaExecuteAction.php	✓	TA, TI, CMD

---

Interactive Forms (AcroForm)

AcroForm Dictionary

Source: packages/pdf/core/src/Interactive/Form/AcroForm.php

Field	Status	Notes
/Fields	✓
/NeedAppearances	✓
/SigFlags	✓
/CO	✓	Calculation order
/DR	✓	Default resources
/DA	✓	Default appearance
/Q	✓	Justification
/XFA	✓	Reference stored

Field Common Fields

Field	Status	Notes
/FT	✓
/Parent	✓
/Kids	✓
/T	✓	Partial name
/TU	✓	User name
/TM	✓	Mapping name
/Ff	✓	Flags
/V	✓	Value
/DV	✓	Default value
/AA	✓	Additional actions

Field Types

Type	Class	Source	Status	Notes
/Btn	ButtonField	ButtonField.php	✓	H, MK, Opt; pushbutton/checkbox/radio via Ff
/Tx	TextField	TextField.php	✓	MaxLen, Q; multiline/password/comb via Ff
/Ch	ChoiceField	ChoiceField.php	✓	Opt, TI, I; combo/edit/sort via Ff
/Sig	SignatureField	SignatureField.php	✓	SigFlags, Lock, SV; /V accepts SignatureValue

Signature Objects

Object	Status	Notes
Signature value dict (/Type /Sig)	✓	SignatureValue — placeholder for real signing; all Table 258 entries
SignatureReference dict	✓	SignatureReference — TransformMethod, TransformParams, Data, DigestMethod
DocMDP transform params	✓	DocMDPTransformParams — P, V
FieldMDP transform params	✓	FieldMDPTransformParams — Action, Fields, V
UR3 transform params	✓	UR3TransformParams — Document, Msg, V, Annots, Form, Signature, EF, P
Perms dict (in Catalog)	✓	Catalog::$perms inline PdfDictionary — DocMDP, UR3, Legal

---

Graphics

ExtGState (/Type /ExtGState)

Source: packages/pdf/core/src/Graphics/ExtGState.php

Field	Status	Notes
/LW	✓	Line width
/LC	✓	Line cap
/LJ	✓	Line join
/ML	✓	Miter limit
/D	✓	Dash pattern
/RI	✓	Rendering intent
/OP	✓	Overprint stroke
/op	✓	Overprint fill
/OPM	✓	Overprint mode
/Font	✓
/FL	✓	Flatness
/SM	✓	Smoothness
/SA	✓	Stroke adjustment
/BM	✓	Blend mode
/SMask	✓	Soft mask reference
/CA	✓	Stroke alpha
/ca	✓	Fill alpha
/AIS	✓	Alpha is shape
/TK	✓	Text knockout
/BG	✓	Black generation function
/BG2	✓	Black generation (PDF 1.3+)
/UCR	✓	Undercolor removal
/UCR2	✓	Undercolor removal (PDF 1.3+)
/TR	✓	Transfer function
/TR2	✓	Transfer function (PDF 1.3+)
/HT	✓	Halftone
/UseBlackPtComp	✓	Black point compensation
/HTO	✓	Halftone origin

Soft Mask Dictionary

Source: packages/pdf/core/src/Graphics/SoftMask.php

Field	Status	Notes
/Type	✓	SoftMask class
/S	✓	Alpha or Luminosity
/G	✓	Transparency group XObject
/BC	✓	Backdrop color
/TR	✓	Transfer function

Color Spaces

Source: packages/pdf/core/src/Graphics/ColorSpace/

Color Space	Status	Notes
/DeviceGray	✓	DeviceGray
/DeviceRGB	✓	DeviceRGB
/DeviceCMYK	✓	DeviceCMYK
/CalGray	✓	CalGray — WhitePoint, BlackPoint, Gamma
/CalRGB	✓	CalRGB — WhitePoint, BlackPoint, Gamma, Matrix
/Lab	✓	Lab — WhitePoint, BlackPoint, Range
/ICCBased	✓	ICCBased — wraps an ICC profile stream reference
/Indexed	✓	Indexed — base, hival, lookup
/Pattern	✓	Pattern — bare name or [Pattern underlyingSpace]
/Separation	✓	Separation — colorant, alternate space, tint transform
/DeviceN	✓	DeviceN — names, alternate space, tint transform, attributes

Pattern (/Type /Pattern)

Source: packages/pdf/core/src/Graphics/Pattern/

Type	Status	Notes
/PatternType 1 (Tiling)	✓	TilingPattern — PaintType, TilingType, BBox, XStep, YStep, Resources, Matrix
/PatternType 2 (Shading)	✓	ShadingPattern — Shading, Matrix, ExtGState

Shading (/Type /Shading or stream)

Source: packages/pdf/core/src/Graphics/Shading/

Type	Status	Notes
/ShadingType 1 (Function-based)	✓	ShadingType1 — ColorSpace, Domain, Matrix, Function
/ShadingType 2 (Axial)	✓	ShadingType2 — Coords, Domain, Extend, Function (linear gradient)
/ShadingType 3 (Radial)	✓	ShadingType3 — Coords, Domain, Extend, Function (radial gradient)
/ShadingType 4 (Free-form Gouraud)	✓	ShadingType4 stream — BitsPerCoordinate/Component/Flag, Decode, Function
/ShadingType 5 (Lattice Gouraud)	✓	ShadingType5 stream — VerticesPerRow
/ShadingType 6 (Coons patch)	✓	ShadingType6 stream
/ShadingType 7 (Tensor-product patch)	✓	ShadingType7 stream

XObject (/Type /XObject)

Source: packages/pdf/core/src/Graphics/XObject/

Subtype	Class	Status	Notes
/Image	ImageXObject	✓	Width, Height, ColorSpace, BitsPerComponent, Filter, DecodeParms, Intent, ImageMask, Mask, SMask, Interpolate, Alternates
/Form	FormXObject	✓	BBox, Matrix, Resources
/PS	PostScriptXObject	✓	Deprecated since PDF 1.7.1

Functions

Source: packages/pdf/core/src/Graphics/Function/

Type	Status	Notes
/FunctionType 0 (Sampled)	✓	FunctionType0 stream — Domain, Range, Size, BitsPerSample, Order, Encode, Decode
/FunctionType 2 (Exponential)	✓	FunctionType2 — Domain, Range, C0, C1, N
/FunctionType 3 (Stitching)	✓	FunctionType3 — Domain, Functions, Bounds, Encode
/FunctionType 4 (PostScript)	✓	FunctionType4 stream — PS operators in stream body

Functions are a prerequisite for Shading types 1–3 and Separation/DeviceN color spaces.

Halftone (/Type /Halftone)

Type	Status	Notes
/HalftoneType 1 (dictionary)	✓	Frequency, Angle, SpotFunction
/HalftoneType 5 (multidotted)	✓	Dict of component halftones
/HalftoneType 6 (threshold array stream)	✓
/HalftoneType 10 (threshold)	✓
/HalftoneType 16 (threshold)	✓

---

Content Stream Operators

Source: packages/pdf/core/src/Content/ContentStream.php

Operator	Category	Status	Notes
m	Path	✓
l	Path	✓
c	Path	✓
v	Path	✓
y	Path	✓
h	Path	✓
re	Path	✓
S	Paint	✓
s	Paint	✓
f	Paint	✓
F	Paint	✓
f*	Paint	✓
B	Paint	✓
B*	Paint	✓
b	Paint	✓
b*	Paint	✓
n	Paint	✓
W	Clip	✓
W*	Clip	✓
q	State	✓
Q	State	✓
cm	State	✓
w	State	✓
J	State	✓
j	State	✓
M	State	✓
d	State	✓
ri	State	✓
i	State	✓
gs	State	✓
CS	Color	✓
cs	Color	✓
SC	Color	✓
SCN	Color	✓
sc	Color	✓
scn	Color	✓
G	Color	✓
g	Color	✓
RG	Color	✓
rg	Color	✓
K	Color	✓
k	Color	✓
Tc	Text	✓
Tw	Text	✓
Tz	Text	✓
TL	Text	✓
Tf	Text	✓
Tr	Text	✓
Ts	Text	✓
Td	Text	✓
TD	Text	✓
Tm	Text	✓
T*	Text	✓
Tj	Text	✓
TJ	Text	✓
Do	XObject	✓
BI/ID/EI	Image	✓
'	Text	✓	moveToNextLineAndShowText()
"	Text	✓	setSpacingMoveAndShowText()
sh	Shading	✓	paintShading()
d0	Type3	✓	setGlyphWidth()
d1	Type3	✓	setGlyphWidthAndBoundingBox()
MP	MarkedContent	✓	markedContentPoint()
DP	MarkedContent	✓	markedContentPointWithProperties()
BMC	MarkedContent	✓	beginMarkedContent()
BDC	MarkedContent	✓	beginMarkedContentWithProperties()
EMC	MarkedContent	✓	endMarkedContent()
BX	Compat	✓	beginCompatibility()
EX	Compat	✓	endCompatibility()

---

Multimedia

Source: packages/pdf/core/src/Multimedia/

Object	Status	Notes
Sound (/Type /Sound)	✓	Sound stream — R, C, B, E, CO, CP
Movie dict	✓	Movie — F, Aspect, Rotate, Poster
Rendition (/Type /Rendition)	✓	MediaRendition (MR), SelectorRendition (SR)
MediaClip (/Type /MediaClip)	✓	MediaClipData (MCD), MediaClipSection (MCS)
MediaPlayParams (/Type /MediaPlayParams)	✓	MediaPlayParams — MH, BE, PL
MediaScreenParams (/Type /MediaScreenParams)	✓	MediaScreenParams — MH, BE
Navigator (/Type /Navigator)	✓	Navigator — NA, NR, Duration

---

File Specifications

Source: packages/pdf/core/src/FileSpec/

Object	Status	Notes
FileSpec (/Type /Filespec)	✓	FileSpec — FS, F, UF, DOS, Mac, Unix, ID, V, EF, RF, Desc, CI
EmbeddedFile stream (/Type /EmbeddedFile)	✓	EmbeddedFile — Subtype, Params
EmbeddedFileParams dict	✓	EmbeddedFileParams — Size, CreationDate, ModDate, Mac, CheckSum

---

Encryption

Source: packages/pdf/core/src/Security/

Object / Field	Status	Notes
EncryptDictionary (/Type /Encrypt)	✓	EncryptDictionary — object model only
Standard handler fields	✓	R, O, U, P, EncryptMetadata, OE, UE, Perms on EncryptDictionary
Crypt filter dict	✓	CryptFilter — Type, CFM, AuthEvent, Length
Public-key handler	✓	PublicKeyRecipient + /Recipients array
RC4 cipher	✓	phpdftk/crypt — Rc4Cipher
AES-128/256 cipher	✓	phpdftk/crypt — AesCipher
PDF key derivation	✓	phpdftk/crypt — PdfKeyDerivation

Fully wired: PdfWriter::setEncryption() registers the /Encrypt dictionary, encrypts all strings/streams per-object during generate(), and emits /Encrypt in the trailer automatically. Supports RC4-40, RC4-128, AES-128, AES-256, and public-key (certificate-based) encryption.

---

Digital Signatures

Source: packages/pdf/core/src/Interactive/Signature/

Object	Status	Notes
Signature value dict (/Type /Sig)	✓	SignatureValue — all Table 258 entries
SignatureReference dict	✓	SignatureReference — TransformMethod, TransformParams, Data, DigestMethod
DocMDP transform params	✓	DocMDPTransformParams
FieldMDP transform params	✓	FieldMDPTransformParams
UR3 transform params	✓	UR3TransformParams
PKCS#7 / CAdES signing	✓	Pkcs7Signer + PdfWriter::setSigner() — ByteRange + /Contents patching
Timestamp authority	✓	DocTimeStamp + TsaClient — full RFC 3161 TSA HTTP client with SHA-256/384/512, wired into signing pipeline via setTimestamper()

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3D

Source: packages/pdf/core/src/ThreeD/

Object	Status	Notes
3D stream (/Type /3D)	✓	ThreeDStream — Subtype (U3D or PRC), VA, DV, AN, ColorSpace
3DView dict (/Type /3DView)	✓	ThreeDView — XN, IN, MS, C2W, CO, P, O, BG, RM, LS, SA
3DBackground dict	✓	ThreeDBackground — CS, C, EA
3DRenderMode dict	✓	ThreeDRenderMode — Subtype, AC, FC, Opacity, CV
3DLightingScheme dict	✓	ThreeDLightingScheme — Subtype
3DCrossSection dict	✓	ThreeDCrossSection — C, O, PC, PO, IV, IC, ST

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Accessibility / Tagged PDF

Source: packages/pdf/core/src/Document/StructTreeRoot.php, StructElem.php

Object / Feature	Status	Notes
StructTreeRoot (/Type /StructTreeRoot)	✓	K, IDTree, ParentTree, ParentTreeNextKey, RoleMap, ClassMap
StructElem (/Type /StructElem)	✓	S, P, ID, Pg, K, A, C, R, T, Lang, Alt, E, ActualText
ObjectRef (/Type /OBJR)	✓	Pg, Obj
Marked content operators	✓	BMC, BDC, EMC, MP, DP implemented in ContentStream
RoleMap dict	✓	RoleMap — typed wrapper mapping custom types to standard ones
ClassMap dict	✓	ClassMap — maps class names to StructAttribute entries
Attribute objects	✓	StructAttribute — /O owner + arbitrary entries

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Character Encodings

Source: packages/encoding/src/

Encoding	Status	Notes
WinAnsiEncoding	✓	WinAnsiTable — standard Windows encoding for most modern PDFs
MacRomanEncoding	✓	MacRomanTable — Mac OS encoding for older PDFs
StandardEncoding	✓	StandardEncodingTable — default Type 1 font encoding per Table D.1
MacExpertEncoding	✓	MacExpertEncodingTable — expert/small-caps Type 1 fonts per Table D.4
PDFDocEncoding	✓	PdfDocEncodingTable — text strings in Info, bookmarks, annotations; auto-detects UTF-16BE/UTF-8/fallback
Adobe Glyph List	✓	GlyphList — glyph name ↔ Unicode mapping
CJK predefined CMaps	✓	16 CJK CMaps (UniGB-UCS2-H, UniJIS-UCS2-H, etc.)

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Stream Filters (Codecs)

Source: packages/filters/src/

Filter	Encode	Decode	Notes
FlateDecode	✓	✓	FlateFilter — zlib inflate/deflate
ASCII85Decode	✓	✓	Ascii85Filter — base-85 encoding
ASCIIHexDecode	✓	✓	AsciiHexFilter — hex encoding
RunLengthDecode	✓	✓	RunLengthFilter — PackBits-style RLE
LZWDecode	✓	✓	LzwFilter — LZW compression and decompression with EarlyChange support
CCITTFaxDecode	✓	✓	CCITTFaxFilter — Group 3 (1D) and Group 4 (2D) Huffman fax encoding and decoding
JBIG2Decode	✓	✓	Jbig2Filter — MMR generic region encoding, segment parsing, jbig2dec fallback
DCTDecode	—	—	Pass-through (JPEG data usable as-is)
JPXDecode	—	—	Pass-through (JPEG 2000 data usable as-is)
Predictor	✓	✓	PredictorFilter — PNG/TIFF predictor encoding and decoding for Flate/LZW

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Reader Capabilities

Source: packages/pdf/reader/src/

Feature	Status	Notes
Classic xref table parsing	✓	Standard and lenient modes
Xref stream parsing (PDF 1.5+)	✓	Binary entry unpacking with width clamping
Object stream unpacking	✓	Decompresses and parses packed objects
Incremental update chains	✓	/Prev chain with loop detection
Hybrid xref support	✓	Scans both classic xref and xref streams
Linearized PDF detection	✓	Scans up to 50 objects for linearization dict
Encryption (read)	✓	RC4-40/128, AES-128/256, public-key
Text extraction	✓	All encoding fallbacks (Standard/MacRoman/MacExpert/WinAnsi)
Positioned text extraction	✓	Per-span x/y/width/height via full text state machine (CTM, Tm, Tc, Tw, Tz, Ts, font widths)
Error tolerance	✓	Missing startxref, corrupted xref, truncated PDF, trailing garbage, missing %%EOF
Object recovery	✓	Scans for endobj, tolerates missing endobj, partial dicts
Stream recovery	✓	Sliding-window endstream scan with 64MB safety limit

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Writer Capabilities

Source: packages/pdf/core/src/File/PdfFileWriter.php

Feature	Status	Notes
Classic xref output	✓	20-byte-per-entry xref tables
Xref stream output	✓	CrossReferenceStream binary packing
Object stream output	✓	ObjectStream compressed indirect objects
Incremental updates	✓	IncrementalWriter with /Prev chain
Linearized output	✓	Two-pass write with padded linearization dict, hint stream, first-page partitioning
Stream compression	✓	Auto FlateDecode compression
Version auto-bump	✓	172 #[RequiresPdfVersion] annotations, strict mode, ceiling mode
Deprecation enforcement	✓	removedIn on #[DeprecatedPdfFeature], strict deprecation mode

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Conformance Profiles

See iso-standards-coverage.md for the full ISO conformance map with profile enums, constraint classes, test files, and the constraint matrix.

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Coverage Summary

Area	Implemented	Total	%
Catalog fields	28	28	100%
PageTree fields	33	33	100%
Page fields	32	32	100%
Info fields	9	9	100%
ViewerPreferences fields	18	18	100%
Document structure objects	24	24	100%
Font subtypes	7	7	100%
FontDescriptor fields	19	19	100%
Annotation base fields	18	18	100%
Markup annotation fields	10	10	100%
Annotation subtypes	26	26	100%
Supporting annot dicts	4	4	100%
Actions	20	20	100%
AcroForm fields	8	8	100%
Field types	4	4	100%
ExtGState fields	28	28	100%
Soft Mask fields	5	5	100%
Color spaces	11	11	100%
XObject subtypes	3	3	100%
Function types	4	4	100%
Pattern types	2	2	100%
Shading types	7	7	100%
Content stream operators	69	69	100%
Encryption	8	8	100%
Digital signatures	7	7	100%
Multimedia	7	7	100%
File specifications	3	3	100%
Accessibility / Tagged PDF	7	7	100%
3D	6	6	100%
Character encodings	7	7	100%
Stream filters (codecs)	10	10	100%
Reader capabilities	11	11	100%
Writer capabilities	7	7	100%

Every spec object has a PHP class and full end-to-end integration.

RFC 3161 timestamping is fully wired: TsaClient sends TimeStampReq messages to any TSA server, and PdfWriter::setTimestamper() / PdfFileWriter::setTimestamper() produce PAdES-compatible document-level timestamps via DocTimeStamp. TSA clients can also be attached alongside regular signers via setTsaClient().

Encryption is fully wired: PdfWriter::setEncryption() (and PdfFileWriter::setEncryption()) register the /Encrypt dictionary, encrypt all strings and streams per-object during generate(), and emit /Encrypt in the trailer automatically. Supports RC4-40, RC4-128, AES-128, AES-256, and public-key (certificate-based) encryption.

PdfWriter::setSigner() is fully wired: it computes /ByteRange, patches /Contents in place, and produces signatures verified in CI via openssl cms -verify.

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Version Gating

See version-coverage.md for the full PDF version feature map with 172 annotated classes/properties, deprecated features, and runtime checks.