HexaPDFImplementation Status
This page gives an overview of which features of PDF 1.7 are implemented in HexaPDF.
At a glance: Reading and writing files with and without encryption works. Damaged files can also be recovered in many cases. Validation is available for all implemented dictionary types.
| PDF 1.7 Feature | Status | Comment |
|---|---|---|
| 1 Scope | Just info | |
| 2 Conformance | Just info | |
| 3 Normative references | A list of reference docs | |
| 4 Terms and definitions | A list of PDF related terms | |
| 5 Notation | Just info | |
| 6 Version Designations | Just info | |
| 7 Syntax | ||
| 7.1 General | ☑ | Just info |
| 7.2 Lexical Conventions | ☑ | |
| 7.3 Objects | ☑ | |
| 7.4 Filters | ||
| 7.4.1 General | ☑ | |
| 7.4.2 ASCIIHexDecode Filter | ☑ | |
| 7.4.3 ASCII85Decode Filter | ☑ | |
| 7.4.4 LZWDecode and FlateDecode Filters | ☑ | Parameter “EarlyChange” is not supported |
| 7.4.5 RunLengthDecode Filter | ☑ | |
| 7.4.6 CCITTFaxDecode Filter | ☑ | Implemented as pass-through |
| 7.4.7 JBIG2Decode Filter | ☑ | Implemented as pass-through |
| 7.4.8 DCTDecode Filter | ☑ | Implemented as pass-through |
| 7.4.9 JPXDecode Filter | ☑ | Implemented as pass-through |
| 7.4.10 Crypt Filter | ☐ | |
| 7.5 File Structure | ||
| 7.5.1 General | ☑ | |
| 7.5.2 File Header | ☑ | |
| 7.5.3 Body | ☑ | |
| 7.5.4 Cross-Reference Table | ☑ | |
| 7.5.5 File Trailer | ☑ | |
| 7.5.6 Incremental Updates | ☑ | Read only |
| 7.5.7 Object Streams | ☑ | |
| 7.5.8 Cross-Reference Streams | ☑ | |
| 7.6 Encryption | Followed PDF2.0 spec | |
| 7.6.1 General | ☑ | EFF is not supported |
| 7.6.2 General Encryption Algorithm | ☑ | |
| 7.6.3 Standard Security Handler | ☑ | |
| 7.6.4 Public-Key Security Handler | ☐ | |
| 7.6.4 Crypt Filters | ☐ | Don’t seem to be used much |
| 7.7 Document Structure | ||
| 7.7.1 General | ☑ | Just info |
| 7.7.2 Document Catalog | ☑ | |
| 7.7.3 Page Tree | ☑ | |
| 7.7.4 Name Dictionary | ☑ | |
| 7.8 Content Streams and Resources | ||
| 7.8.1 General | ☑ | Just info |
| 7.8.3 Resource Dictionaries | ☑ | |
| 7.9 Common Data Structures | ||
| 7.9.1 General | ☑ | Just info |
| 7.9.2 String Object Types | ☑ | |
| 7.9.3 Text Streams | ☑ | |
| 7.9.4 Dates | ☑ | |
| 7.9.5 Rectangles | ☑ | |
| 7.9.6 Name Trees | ☑ | |
| 7.9.7 Number Trees | ☑ | |
| 7.10 Functions | ☐ | |
| 7.11 File Specifications | ☑ | |
| 7.12 Extensions Dictionary | ☐ | |
| 8 Graphics | ||
| 8.1 General | ☑ | Just info |
| 8.2 Graphics Objects | ☐ | |
| 8.3 Coordinate Systems | ☑ | |
| 8.4 Graphics State | ||
| 8.4.1 General | ☑ | Except device-dependent parameters |
| 8.4.2 Graphics Stack State | ☑ | |
| 8.4.3 Details of Graphics State Parameters | ☑ | |
| 8.4.4 Graphics State Operators | ☑ | |
| 8.4.5 Graphics State Parameter Dictionaries | ☑ | |
| 8.6 Colour Spaces | ||
| 8.6.1 General | ☑ | Just info |
| 8.6.2 Colour Values | ☑ | |
| 8.6.3 Colour Space Families | ☑ | |
| 8.6.4 Device Colour Spaces | ☑ | |
| 8.6.5 CIE-Based Colour Spaces | ☐ | |
| 8.6.6 Special Colour Spaces | ☐ | |
| 8.6.7 Overprint Control | ☑ | Not applicable |
| 8.6.8 Colour Operators | ☑ | |
| 8.7 Patterns | ||
| 8.8 External Objects | ||
| 8.8.1 General | ☑ | |
| 8.8.2 PostScript XObjects | ☐ | Not really useful |
| 8.9 Images | ||
| 8.9.1 General | ☑ | Just info |
| 8.9.2 Image Parameters | ☑ | |
| 8.9.3 Sample Representation | ☑ | |
| 8.9.4 Image Coordinate System | ☑ | |
| 8.9.5 Image Dictionaries | ☑ | |
| 8.9.6 Masked Images | ☐ | |
| 8.9.7 Inline Images | ☐ | |
| 9 Text | No support for vertical writing | |
| 9.1 General | ☑ | Just info |
| 9.2 Organization and Use of Fonts | ☑ | |
| 9.3 Text State Parameters and Operators | ☑ | |
| 9.4 Text Objects | ☑ | |
| 9.5 Introduction to Font Data Structures | ☑ | |
| 12 Interactive Features | ||
| 12.1 General | ☑ | Just info |
| 12.2 Viewer Preferences | ☑ | |
| 12.3 Document-Level Navigation | ||
| 12.3.1 General | Just info | |
| 12.3.2 Destinations | ☑ | |
| 12.3.3 Document Outline | ☑ | |
| 12.3.4 Thumbnail Images | ☑ | |
| 12.3.5 Collections | ||
| 12.4 Page-Level Navigation | ||
| 12.4.1 General | ☑ | Just info |
| 12.4.2 Page Labels | ☑ | |
| 12.4.3 Articles | ||
| 12.4.4 Presentations | ||
| 12.5 Annotations | ||
| 12.5.1 General | ||
| 12.5.2 Annotation Dictionaries | ☑ | |
| 12.5.3 Annotation Flags | Just manipulation, not used/respected yet | |
| 12.5.4 Border Styles | ☑ | Just for widgets |
| 12.5.5 Appearance Streams | ☑ | Just for widgets |
| 12.5.6 Annotation Types | ||
| 12.5.6.1 General | ☑ | Just info |
| 12.5.6.4 Text Annotation | ☑ | |
| 12.5.6.5 Link Annotation | ☑ | |
| 12.5.6.19 Widget Annotation | ☑ | |
| 12.6 Actions | ||
| 12.7 Interactive Forms | ||
| 12.7.1 General | ☑ | Just info |
| 12.7.2 Interactive Form Dictionary | ☑ | |
| 12.7.3 Field Dictionaries | ||
| 12.7.3.1 General | ☑ | |
| 12.7.3.2 Field Names | ☑ | |
| 12.7.3.3 Variable Text | ☑ | |
| 12.7.3.4 Rich Text Strings | ||
| 12.7.4 Field Types | ||
| 12.7.4.1 General | ☑ | Just info |
| 12.7.4.2 Button Fields | ☑ | No appearance generation for push buttons |
| 12.7.4.3 Text Fields | ☑ | |
| 12.7.4.4 Choice Fields | ☑ | |
| 12.7.4.5 Signature Fields | ||
| 12.8 Digital Signatures | ||
| 12.8.1 General | ☑ | Just info |
| 12.8.2 Transform Methods | ||
| 12.8.2.1 General | ☑ | Just info |
| 12.8.2.2 DocMDP | ☑ | |
| 12.8.3 Signature Interoperability | ||
| 12.8.3.1 General | ☑ | Just info |
| 12.8.3.2 PKCS#1 Signatures | ☑ | |
| 12.8.3.3 PKCS#7 Signatures as used in ISO 32000 | ☑ | |
| 14 Document Interchange | ||
| 14.1 General | ☑ | Just info |
| 14.2 Procedure Sets | ☑ | |
| 14.3.3 Document Information Dictionary | ☑ | |
| 14.4 File Identifiers | ☑ | |
| 14.6 Marked Content | ☑ | |
| 14.7 Logical Structure | ||
| 14.7.1 General | ☑ | |
| 14.7.2 Structure Hierarchy | ☑ | |
| 14.7.3 Structure Types | ||
| 14.7.4 Structure Content | ||
| 14.7.5 Structure Attributes | ||
| 14.7.6 Example of Logical Structure | ||
| 14.11.2 Page Boundaries | ☑ |