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PDFix Desktop Changelog

PDFix SDK Changelog

PDFix Desktop
PDFix SDK
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PDFix Desktop Changelog

[2.5.5] – 2026-04-29

Summary

This release focuses on a more practical application workspace, stronger external tagging workflows, and more flexible action execution directly in Document View.

  • Improved usability and file handling in the Application Dashboard, including validation, preview, folder drag-and-drop, and clearer handling of opened files.
  • Added and improved external actions for document tagging and tagging template creation, including Docling-based AutoTag and Create Layout Template workflows.
  • Expanded custom action composition in Document View, including support for external actions, improved setup dialogs, and output handling into new tabs.

User Interface

  • Added validation preview in Application Dashboard
  • Added support for dragging and dropping folders into a tab
  • Added the Action pane and improved the action execution pane in Document View

Accessibility and Tagging

  • Added Add Child Tag action
  • Added Move Tag action
  • Added Move Up, Move Down, Level Up, Expand All, Collapse All, and Merge actions
  • Added Alternate and Actual Text fields in Content pane
  • Enabled artifact actions when tags are selected
  • Added Split Content action
  • Added Set List Numbering action
  • Added automated fixes for validation errors
  • Fixed link creation errors
  • Fixed image tagging in Form XObject substructures

Actions and Workflows

  • Added Action pane in Document View
  • Improved Action setup dialogs
  • Added an option to save outputs into a new tab
  • Added support for external actions in Document View
  • Improved Custom Action editor ordering
  • Added support for copying and pasting actions as JSON
  • Improved batch progress and cancellation updates
  • Added notifications for new action packages

External Actions

  • Improved Create Layout Template (Docling) and AutoTag (Docling) actions to support lists, complex tables, and element parenting
  • Added a new external AutoTag (PDFix) action that uses layout templates and ensures backward compatibility by using the appropriate PDFix SDK version

Validation and veraPDF

  • Added Validation view in Application Dashboard
  • Added veraPDF check highlighting in Preview
  • Improved validation issue reporting
  • Improved validation/layout integration
  • Improved PAC and clause view switching

Templates and Layout Recognition

  • Improved Template pane loading
  • Added template aliases
  • Improved disabled template item behavior

Performance and Stability

  • Performance and stability improvements
  • Threading and batch cancellation improvements

PDFix SDK Changelog

[8.8.0] – 2026-04-29

Accessibility

  • Added support for setting Alt, Actual Text, Lang, Extension, and Title properties on structure elements through layout templates and element property update functions
  • Added and improved Fix Parent Tree, Fix Table Tag, Fix List, Set List Numbering, Move Tags, Split Content, Delete Tags, and Make Accessible workflows
  • Added support for tagging initial elements only and improved parenting of initial elements and containers
  • Added support for artifacting untagged content and improved removal of empty content marks after MCID cleanup
  • Improved list recognition, ordered list detection, label validation, label updates, and combined label flag handling
  • Improved heading level detection based on font properties
  • Improved continuous paragraph, list, and table handling
  • Improved reading order and content order in paragraphs, table headers, table cells, and split text
  • Improved auto-tagging of background words, subscript and superscript text, and text spans with layout-specific edge cases
  • Fixed Add Tags support for embedded templates
  • Fixed Remove Tags and Remove Labels behavior and performance on larger documents
  • Fixed Element Properties Update not applying Alt Text or Actual Text
  • Fixed Alternate Text and Actual Text Unicode encoding issues
  • Fixed Delete Tags crashes and Fix Parent Tree issues
  • Fixed Split Content duplication and Split Pages issues
  • Fixed Autotag hangs with substructure XObjects

Actions

  • Added Fix Table action
  • Added Split Content action
  • Added Fix Metadata and Reset Metadata actions
  • Added Fix Fonts action, which replaces Embed Fonts and Add Missing Unicode with new options
  • Added Move Tags action
  • Added Set Title action option to use the document title from the Info dictionary
  • Added support for running combined external and base custom actions directly from the SDK
  • Added support for embedding external custom actions into the SDK, including APIs to save and enumerate custom actions
  • Added support for external actions in PsCommand
  • Added Fix Headings parameter Assign heading levels to regenerate H1–H6 from font style and leading numbering
  • Updated Set Annotation Contents action to use previous, next, and parent tag text for annotation content
  • Updated Create Bookmarks action to correctly remove existing bookmarks when overwrite is enabled
  • Fixed Set Annotation Contents action for widget annotations with empty or missing TU values
  • Fixed Remove Annotation Properties action for widget annotations
  • Fixed Set Title action when deriving the title from the file name

External Actions

  • Improved Create Layout Template (Docling) and AutoTag (Docling) action to support List, complex Tables, and element parenting
  • Added a new external AutoTag (PDFix) action that utilizes layout templates and ensures backward compatibility by using the appropriate PDFix SDK version

PdfDocTemplate

  • Added element_nest function to layout templates
  • Added element_prop_detect function to set element properties
  • Added has_annot and is_standard_tag support for structure element and template processing
  • Added title support for structure elements in layout templates
  • Added template support for Alt, Actual Text, Lang, and Extension properties
  • Fixed regular expression matching for empty strings in layout templates
  • Fixed UTF-8 to PDF string conversion from JSON templates
  • Fixed table detection crashes caused by invalid templates
  • Fixed alternate text encoding from templates
  • Improved text insertion, text-in-place handling, line sorting, baseline checks, and text run bounding box recalculation

Annotations

  • Fixed annotation rectangles for initial elements
  • Fixed widget annotation TU handling in Set Annotation Contents
  • Fixed removal of annotation properties for widget annotations

Metadata and Document Information

  • Added PdfObjectInfo and PdfDoc.AcquireObjectInfo(string) for veraPDF-style object identification
  • Added Export Bookmarks to JSON
  • Fixed saving PDF version 2.0 documents so they are not incorrectly saved as PDF version 1.0

Fonts

  • Added Fix Font support for .notdef glyph compliance issue (clause 7.21.8)
  • Improved font name comparison in the knowledge base
  • Fixed preflight issues with font names containing unsupported characters

Command-Line and Pipeline

  • Refactored CLI batch command output handling for JSON output to file or stderr
  • Fixed CLI batch command exit codes on exceptions
  • Fixed forwarding of subprocess stdout and stderr in pdfix_app batch

WebAssembly

  • Enabled WASM memory growth with -s ALLOW_MEMORY_GROWTH=1

SDK, API

  • Added PdfObjectInfo – New object for parsed information about a PDF object identified by a string path, intended for resolving validator paths such as veraPDF object references.
  • Added PdfDoc::AcquireObjectInfo(const wchar_t* path) – Acquires PdfObjectInfo for a validator-style object path so callers can resolve page, annotation, content, MCID, object-id, and bounding-box information.
  • Added PdsStructElement::HasContent() – Checks whether the structure element is connected with page content through MCID/MCR.
  • Added PdsStructElement::HasAnnot() – Checks whether the structure element contains an annotation reference, OBJR, directly or indirectly.
  • Added PsCommand::SaveActionsToStream(PsStream* stream, PsDataFormat format, PdfSaveFlags flags) – Serializes all built-in PDFix action definitions to a stream for discovering actions, parameters, and options.
  • Added PsCommand::GetNumCustomActions() – Returns the number of embedded custom action presets distributed with the SDK.
  • Added PsCommand::SaveCustomActionToStream(int index, PsStream* stream, PsDataFormat format, PdfSaveFlags flags) – Serializes one embedded custom action preset to a stream for inspection or execution through PsCommand.
  • Added Pdfix::GetCommand() – Creates a PsCommand object, or returns null if creation fails.
  • Added PdfObjectInfo::GetType() – Returns the parsed object reference type.
  • Added PdfObjectInfo::GetPageNum() – Returns the zero-based page index for a page-specific object path, or -1 when no page is associated.
  • Added PdfObjectInfo::GetCount() – Returns the number of parsed path entries.
  • Added PdfObjectInfo::GetBBox(int index, PdfRect* bbox) – Returns the bounding box associated with a parsed path entry, if available.
  • Added PdfObjectInfo::GetAnnotIndex(int index) – Returns the zero-based annotation index for a parsed entry.
  • Added PdfObjectInfo::GetContentStreamId(int index) – Returns the content stream identifier for a parsed entry.
  • Added PdfObjectInfo::GetContentId(int index) – Returns the content identifier for a parsed entry.
  • Added PdfObjectInfo::GetNumContentItemIds(int index) – Returns the number of nested content item identifiers for a parsed entry.
  • Added PdfObjectInfo::GetContentItemId(int index, int index2) – Returns one nested content item identifier from a parsed entry.
  • Added PdfObjectInfo::GetOperatorId(int index) – Returns the content operator identifier for a parsed entry.
  • Added PdfObjectInfo::GetMcid(int index) – Returns the MCID associated with a parsed entry.
  • Added PdfObjectInfo::GetObjectIdCount() – Returns the number of COS object identifiers referenced by the parsed path.
  • Added PdfObjectInfo::GetObjectId(int index) – Returns one COS object identifier extracted from the parsed path.
  • Added PdfObjectInfo::Release() – Releases the PdfObjectInfo object and returns the remaining reference count.
  • Modified PdeList – Changed inheritance from PdeElement to PdeContainer, exposing list elements as containers.
  • Modified PdsStructElement::SetActualText(const wchar_t* text) – Parameter name changed from alt to text; the function still sets the ActualText value for the structure element.
  • Modified PdsStructElement::RecognizeTable() – Return type changed from bool to PdsStructTableError, allowing callers to inspect detailed table recognition errors.
  • Modified PsAccountAuthorization::Authorize(const wchar_t* license_name, const wchar_t* license_key) – Parameter names changed from email and serial_number to license name/key terminology.
  • Added PdfContainerType::kPdeContainerList – Adds list container type.
  • Added PdfElementFlags::kElemNone – Adds explicit no-flag value.
  • Added PdfElementFlags::kElemNoNesting – Adds a flag that prevents nesting.
  • Added PdfLabelType::kLabelList – Adds explicit list-label value.
  • Added PdfLabelType::kLabelLevel5 – Adds list label level 5.
  • Added PdfLabelType::kLabelLevel6 – Adds list label level 6.
  • Added PdfObjectInfoType – Adds object identification types used by PdfObjectInfo, including document, metadata, structure tree, structure element, bookmark, font, annotation, content, content item, and XObject.
  • Modified PdfLabelType::kLabel – Meaning changed to marked as label but do not create lists.
  • Modified PdfTextStyle – Replaced separate kTextH7 and kTextH8 heading styles with generic kTextH.
  • Modified PdsStructTableError – Reworked table errors to report invalid span, invalid tag type, and missing table headers.
  • Modified PdfCellParams – Added PdsStructTableError error, initialized to kTableErrorNone.
  • Removed PsCommandType – Removed typed command/action group enum for base, make accessible, autofix, and quickfix command exports.
  • Removed PsCommand::SaveCommandsToStream(PsCommandType type, PsStream* stream, PsDataFormat format, PdfSaveFlags flags) – Removed typed command export API; replaced by SaveActionsToStream(), GetNumCustomActions(), and SaveCustomActionToStream().
  • Removed PdfTextStyle::kTextH7 – Removed H7 heading style value; replaced by generic kTextH.
  • Removed PdfTextStyle::kTextH8 – Removed H8 heading style value; replaced by generic kTextH.
  • Removed PdsStructTableError::kTableErrorNoRow – Removed missing-row table error value.
  • Removed PdsStructTableError::kTableErrorRowSpan – Removed rowspan-specific table error value; replaced by generic span error handling.
  • Removed PdsStructTableError::kTableErrorColSpan – Removed colspan-specific table error value; replaced by generic span error handling.

General Updates

  • Improved logging support
  • Fixed C# marshaling of const char* return values as IntPtr
  • Performance, stability, memory management

Releases