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go-docx v2 Implementation Status

Last Updated: February 2026 Version: 2.2.2 (Stable)

This document tracks the implementation status of all v2 features, helping developers understand what's available, what's in progress, and what's planned.

📊 Overall Progress

Core Architecture: ✅ 100% Complete Core Features: ✅ 100% Complete Advanced Features: ✅ 95% Complete Documentation: ✅ 100% Complete

Overall: Production Ready (Stable)

Release History

All development phases have been completed. The library has gone through multiple stable releases:

Version Date Highlights
v2.0.0-beta Oct 2025 Initial beta
v2.0.0 Oct 2025 Stable release, clean architecture, document reading
v2.0.1 Nov 2025 Go module path fix
v2.1.0 Oct 2025 Theme system (7 preset themes)
v2.1.1 Nov 2025 Go module path fix
v2.2.0 Jan 2026 Table cell border serialization
v2.2.1 Jan 2026 Round-trip fixes (hyperlinks, styles, images)
v2.2.2 Feb 2026 Table style borders fix, grid width calc, docs overhaul

✅ Fully Implemented Features

Core Document Model

  • ✅ Document creation (NewDocument())
  • ✅ Document metadata (title, author, subject, keywords)
  • ✅ Document validation
  • ✅ Save to file (SaveAs())
  • ✅ Save to writer (WriteTo())
  • ✅ Thread-safe operations (RWMutex)

Builder Pattern API

  • ✅ DocumentBuilder with fluent API
  • ✅ ParagraphBuilder with chaining
  • ✅ TableBuilder, RowBuilder, CellBuilder
  • ✅ Error accumulation and validation
  • ✅ Functional options pattern (WithTitle(), WithAuthor(), etc.)
  • ✅ Predefined constants (colors, alignments, underline styles)

Paragraphs and Runs

  • ✅ Add paragraphs (AddParagraph())
  • ✅ Add runs (AddRun())
  • ✅ Text content (SetText())
  • ✅ Text formatting:
    • ✅ Bold, italic, underline
    • ✅ Font size (half-points)
    • ✅ Color (RGB hex)
    • ✅ Strikethrough
    • ✅ Superscript/subscript
  • ✅ Paragraph alignment (left, center, right, justify, distribute)
  • ✅ Paragraph styles (40+ built-in styles)
  • ✅ Line spacing
  • ✅ Indentation
  • ✅ Page breaks
  • ✅ Hyperlinks

Tables

  • ✅ Create tables (AddTable(rows, cols))
  • ✅ Access rows and cells
  • ✅ Cell content (paragraphs and runs)
  • ✅ Cell formatting:
    • ✅ Width
    • ✅ Vertical alignment
    • ✅ Background color (shading)
    • ✅ Borders
  • ✅ Cell merging (colspan and rowspan)
  • ✅ Nested tables (tables within cells)
  • ✅ Table styles (8 predefined styles with proper border serialization)
  • ✅ Row height control
  • ✅ Table width and alignment

Images

  • ✅ Add images from file path (AddImage())
  • ✅ Add images from bytes
  • ✅ Custom image dimensions (AddImageWithSize())
  • ✅ Floating images with positioning (AddImageWithPosition())
  • ✅ Supported formats:
    • ✅ PNG, JPEG, GIF, BMP
    • ✅ TIFF, SVG, WEBP
    • ✅ ICO, EMF
  • ✅ Automatic format detection
  • ✅ Image dimension reading

Fields

  • ✅ Field framework and interfaces
  • ✅ Field types:
    • ✅ PAGE (page number)
    • ✅ NUMPAGES (total pages)
    • ✅ TOC (table of contents)
    • ✅ HYPERLINK (hyperlinks)
    • ✅ STYLEREF (style references)
    • ✅ SEQ (sequence numbering)
    • ✅ REF (bookmark references)
    • ✅ PAGEREF (page references)
    • ✅ DATE (date field)
  • ✅ Field code generation
  • ✅ Field dirty tracking
  • ✅ Run integration (run.AddField())

Sections and Page Layout

  • ✅ Section interface and implementation
  • ✅ Default section support (DefaultSection())
  • ✅ Page size configuration:
    • ✅ Predefined sizes (A4, Letter, Legal, A3, Tabloid)
    • ✅ Custom sizes
  • ✅ Page orientation (portrait, landscape)
  • ✅ Page margins (top, right, bottom, left, header, footer)
  • ✅ Column layout (1-10 columns)
  • ✅ Headers and footers:
    • ✅ Default header/footer
    • ✅ First page header/footer
    • ✅ Even page header/footer
    • ✅ Header/footer content (paragraphs, runs, fields)
  • ✅ Multi-section documents:
    • ✅ Document.AddSection() and AddSectionWithBreak() (Next, Continuous, Even, Odd)
    • ✅ Section breaks serialized with per-section w:sectPr
    • ✅ Independent headers/footers and layout per section
    • ✅ Blocks maintain insertion order across sections

Styles

  • ✅ Style manager
  • ✅ Built-in paragraph styles (40+ styles):
    • ✅ Headings (Heading1-9)
    • ✅ Title styles (Title, Subtitle)
    • ✅ Body text (Normal, BodyText, BodyText2, BodyText3)
    • ✅ Emphasis (Quote, IntenseQuote, Emphasis, Strong, IntenseEmphasis)
    • ✅ Lists (ListParagraph, ListNumber, ListBullet, etc.)
    • ✅ Special (NoSpacing, Caption, Footer, Header)
  • ✅ Character styles
  • ✅ Paragraph styles
  • ✅ Style application (SetStyle())

Managers and Infrastructure

  • ✅ RelationshipManager (tracks relationships)
  • ✅ MediaManager (manages embedded media)
  • ✅ IDGenerator (generates unique IDs)
  • ✅ StyleManager (40+ built-in styles)
  • ✅ Serializer (OOXML XML generation)
  • ✅ ZIP writer (document packaging)

Error Handling

  • ✅ Custom error types (errors.Error)
  • ✅ Error wrapping with context
  • ✅ Validation errors
  • ✅ Builder error accumulation
  • ✅ Comprehensive error messages

Testing

  • ✅ Unit tests (95%+ coverage)
  • ✅ Integration tests
  • ✅ Test helpers and fixtures
  • ✅ Coverage reporting
  • ✅ CI/CD integration

Documentation

  • ✅ V2 API Guide (V2_API_GUIDE.md)
  • ✅ V2 Design Document (V2_DESIGN.md)
  • ✅ Migration Guide (MIGRATION.md)
  • ✅ Working examples (13 examples in examples/)
  • ✅ Package-level godoc
  • ✅ README with quick start
  • ✅ CHANGELOG
  • ✅ CONTRIBUTING guide

Theme System

  • ✅ Theme interface with colors, fonts, spacing, headings
  • ✅ 7 preset themes (Corporate, Startup, Modern, Fintech, Academic, TechPresentation, TechDarkMode)
  • ✅ Custom theme support (Clone, WithColors, WithFonts, WithSpacing)
  • ✅ WithTheme() builder option
  • ✅ Theme application to document styles

Document Reading & Round-trip

  • ✅ Open existing .docx files (docx.OpenDocument())
  • ✅ Parse document structure (paragraphs, runs, tables)
  • ✅ Modify existing documents (add/edit content)
  • ✅ Style preservation (all paragraph and character styles)
  • ✅ Custom styles preservation during round-trip
  • ✅ Hyperlink RelationshipID preservation
  • ✅ Drawing/image position serialization
  • ✅ Internal hyperlink anchors

🚧 Partially Implemented Features

Style System

Status: 🟡 Partial (85%) File: internal/core/paragraph.go:231 Function: Style()

Implemented:

  • ✅ 40+ built-in paragraph styles
  • ✅ Style application via SetStyle()
  • ✅ Character-level formatting

Missing:

  • ⏳ Style retrieval (paragraph.Style() returns nil)
  • ⏳ Custom style creation (currently only built-in styles work)
  • ⏳ Style inheritance chain
  • ⏳ Style modification

Impact: LOW Priority: LOW (for v2.2.0+) Effort Estimate: 4-6 hours

Use Cases:

  • Querying current formatting
  • Conditional styling based on current style
  • Style validation

Workaround: Use built-in styles and track applied style names manually in your own code when calling SetStyle().

Implementation Tasks (for contributors):

  1. Style retrieval (~2 hours): Implement Style() getter
  2. Style queries (~2 hours): Add style property queries
  3. Tests (~1 hour): Style retrieval tests
  4. Documentation (~1 hour): Update API guide

Document Reading

Status: ✅ Working (core features complete)

Implemented:

  • ✅ ZIP extraction infrastructure
  • ✅ XML parsing
  • ✅ Relationship loading
  • ✅ Paragraph spacing, alignment, and indentation hydration
  • ✅ Paragraph style preservation (w:pStyle extraction and application)
  • ✅ Run text + formatting hydration (bold, italic, underline, color, size, highlight, fonts)
  • ✅ Run breaks, tabs, and field hydration
  • ✅ Basic table hydration (rows, cells, paragraph content)
  • ✅ Embedded image hydration (inline drawings, media relationship + data registration)
  • ✅ Public open helpers (OpenDocument, streaming/bytes variants)
  • ✅ Full document reading and modification
  • ✅ Hyperlink RelationshipID preservation (v2.2.1)
  • ✅ Custom styles preservation during round-trip (v2.2.1)

Remaining enhancements (lower priority):

  • ⏳ Advanced table features in reader (complex merging, nested tables)
  • ⏳ Header/footer reading from existing docs
  • ⏳ Complete field reading

Available Now: Use docx.OpenDocument() - See examples/12_read_and_modify/

Planned Features (Not Yet Implemented)

Mail Merge / Templates ✅ IMPLEMENTED (v2.3.0)

Priority: MEDIUM Status: ✅ Fully implemented in pkg/template/

Features:

  • ✅ Document templates with {{placeholder}} variable substitution
  • ✅ Automatic run consolidation to heal split placeholders
  • ✅ Placeholder detection across body, tables, headers, and footers
  • ✅ Template validation (missing/unused key detection)
  • ✅ Batch document generation from data sources
  • ✅ Custom delimiter support
  • ✅ Strict mode for missing key errors
  • Conditional content (planned for future release)

Use Cases: Generating personalized letters, invoices, reports from templates.

Available Now: Use pkg/template package — See examples/14_mail_merge/

Custom Style Creation

Priority: LOW

Features:

  • Custom paragraph style creation
  • Custom character style creation
  • Style modification and inheritance

Use Cases: Brand-specific styling beyond the 40+ built-in styles.

Comments and Track Changes

Priority: LOW

Features:

  • Add/reply to comments
  • Track changes
  • Accept/reject changes

Form Controls

Priority: LOW

Features:

  • Text input fields, checkboxes, dropdown lists, date pickers

Other Future Features

  • Advanced field features (IF, COMPARE, custom field types)
  • Advanced drawing shapes
  • Document comparison
  • Custom XML parts

Known Limitations and Workarounds

1. Style Retrieval

File: internal/core/paragraph.go Limitation: paragraph.Style() returns nil (cannot retrieve applied style).

Workaround: Track applied style names in your own code when calling SetStyle().

2. Field Calculation

Limitation: Fields are generated with dirty flag (Word recalculates on open).

Workaround: This is standard behavior - Word will update fields when the document is opened. For manual updates, press Ctrl+A, F9 in Word.

Note: Not a bug - this is how Microsoft Word works.

3. Deprecated API Pattern

Function: Paragraph.AddField() Message: "use AddRun() and run.AddField() instead"

Note: This is NOT a limitation - just a deprecated API pattern. Fields work perfectly via run.AddField(field). All 9 field types are fully implemented and functional.

Contributing

Want to help implement missing features? See CONTRIBUTING.md.

Priority Areas for Contributions

  1. Mail Merge / Templates ✅ Implemented in v2.3.0
  2. Custom Style Creation - Brand-specific styling
  3. Comments and Track Changes - Collaborative editing
  4. Form Controls - Interactive documents

How to Contribute

  1. Check existing issues on GitHub
  2. Open a discussion to claim a feature
  3. Read CONTRIBUTING.md for guidelines
  4. Start with tests (TDD)
  5. Keep PRs focused - one feature per PR
  6. Update documentation - code + docs in same PR

Support

  • Questions: Open a Discussion on GitHub
  • Bugs: Open an Issue with reproducible example
  • Features: Open an Issue with use case description
  • Documentation: PRs welcome!

Last Updated: February 2026 Status: Production Ready (v2.2.2 Stable) Maintained by: Misael Monterroca (@mmonterroca)