docx_creator #

A developer-first DOCX generation library for Dart. Create, parse, read, and edit Microsoft Word documents with a fluent API, HTML/Markdown parsers, and full OpenXML compliance.

✨ Features #

📦 Installation #

Add to your pubspec.yaml:

dependencies:
  docx_creator: ^1.0.3

Then run:

dart pub get

🚀 Quick Start #

Hello World #

import 'package:docx_creator/docx_creator.dart';

void main() async {
  // Create a simple document
  final doc = docx()
    .h1('Hello, World!')
    .p('This is my first DOCX document.')
    .build();

  // Save to file
  await DocxExporter().exportToFile(doc, 'hello.docx');
}

From HTML #

final htmlContent = '''
<h1>Report Title</h1>
<p>This is a <b>bold</b> and <i>italic</i> paragraph.</p>
<ul>
  <li>Item 1</li>
  <li>Item 2</li>
</ul>
''';

final elements = await DocxParser.fromHtml(htmlContent);
final doc = DocxBuiltDocument(elements: elements);
await DocxExporter().exportToFile(doc, 'from_html.docx');

From Markdown #

final markdown = '''
# Project Report

## Summary
This is **important** information.

- Task 1: Complete
- Task 2: In Progress
''';

final elements = await MarkdownParser.parse(markdown);
final doc = DocxBuiltDocument(elements: elements);
await DocxExporter().exportToFile(doc, 'from_markdown.docx');

📖 Documentation #

Table of Contents #

1. Builder API
2. Text Formatting
3. Lists
4. Tables
5. Images
6. Shapes & Drawings
7. HTML Parser
8. Markdown Parser
9. DOCX Reader & Editor
10. Sections & Page Layout
11. Font Embedding
12. API Reference

Builder API #

The DocxDocumentBuilder provides a fluent interface for document creation:

final doc = DocxDocumentBuilder()
  // Headings
  .h1('Title')
  .h2('Chapter')
  .h3('Section')
  
  // Paragraphs
  .p('Simple paragraph text')
  .p('Right-aligned', align: DocxAlign.right)
  
  // Lists
  .bullet(['Item 1', 'Item 2', 'Item 3'])
  .numbered(['Step 1', 'Step 2', 'Step 3'])
  
  // Tables
  .table([
    ['Header 1', 'Header 2'],
    ['Cell 1', 'Cell 2'],
  ])
  
  // Special elements
  .pageBreak()
  .hr()  // Horizontal rule
  .quote('Blockquote text')
  .code('print("Hello");')
  
  .build();

Short vs Full Method Names #

Text Formatting #

Create rich text with DocxText and DocxParagraph:

final doc = DocxDocumentBuilder()
  .add(DocxParagraph(children: [
    // Basic formatting
    DocxText('Bold ', fontWeight: DocxFontWeight.bold),
    DocxText('Italic ', fontStyle: DocxFontStyle.italic),
    DocxText('Underline ', decoration: DocxTextDecoration.underline),
    DocxText('Strikethrough', decoration: DocxTextDecoration.strikethrough),
  
    // Colors
    DocxText('Red text ', color: DocxColor.red),
    DocxText('Custom color ', color: DocxColor('#FF6600')),
    DocxText('With background ', shadingFill: 'FFFF00'),
  
    // Font size
    DocxText('Large text', fontSize: 24),
  
    // Superscript/Subscript
    DocxText('E=mc'),
    DocxText('2', isSuperscript: true),
    DocxText(' H'),
    DocxText('2', isSubscript: true),
    DocxText('O'),
  
    // Highlighting
    DocxText('Highlighted', highlight: DocxHighlight.yellow),
  
    // Hyperlinks
    DocxText('Click here', 
      href: 'https://example.com',
      color: DocxColor.blue,
      decoration: DocxTextDecoration.underline),
  ]))
  .build();

Available Colors #

// Predefined colors
DocxColor.black, DocxColor.white, DocxColor.red, DocxColor.blue,
DocxColor.green, DocxColor.yellow, DocxColor.orange, DocxColor.purple,
DocxColor.gray, DocxColor.lightGray, DocxColor.darkGray, DocxColor.cyan,
DocxColor.magenta, DocxColor.pink, DocxColor.brown, DocxColor.navy,
DocxColor.teal, DocxColor.lime, DocxColor.gold, DocxColor.silver

// Custom hex colors
DocxColor('#FF5722')
DocxColor('4285F4')  // # is optional

Lists #

Simple Lists #

// Bullet list
.bullet(['First item', 'Second item', 'Third item'])

// Numbered list
.numbered(['Step 1', 'Step 2', 'Step 3'])

Nested Lists #

final nestedList = DocxList(
  style: DocxListStyle.disc,
  items: [
    DocxListItem.text('Level 0 - First', level: 0),
    DocxListItem.text('Level 1 - Nested', level: 1),
    DocxListItem.text('Level 2 - Deep', level: 2),
    DocxListItem.text('Level 1 - Back', level: 1),
    DocxListItem.text('Level 0 - Root', level: 0),
  ],
);

docx().add(nestedList).build();

List Styles #

DocxListStyle.disc       // • Solid disc (default)
DocxListStyle.circle     // ◦ Circle
DocxListStyle.square     // ▪ Square
DocxListStyle.dash       // - Dash
DocxListStyle.arrow      // → Arrow
DocxListStyle.check      // ✓ Checkmark
DocxListStyle.decimal    // 1, 2, 3
DocxListStyle.lowerAlpha // a, b, c
DocxListStyle.upperAlpha // A, B, C
DocxListStyle.lowerRoman // i, ii, iii
DocxListStyle.upperRoman // I, II, III

Tables #

Simple Table #

.table([
  ['Name', 'Age', 'City'],
  ['Alice', '25', 'New York'],
  ['Bob', '30', 'Los Angeles'],
])

Styled Table #

final styledTable = DocxTable(
  rows: [
    DocxTableRow(cells: [
      DocxTableCell(
        children: [DocxParagraph(children: [
          DocxText('Header', fontWeight: DocxFontWeight.bold, color: DocxColor.white)
        ])],
        shadingFill: '4472C4',  // Blue background
        verticalAlign: DocxVerticalAlign.center,
      ),
      // More cells...
    ]),
    // More rows...
  ],
);

Images #

import 'dart:io';

// From file
final imageBytes = await File('logo.png').readAsBytes();
final doc = docx()
  .add(DocxImage(
    bytes: imageBytes,
    extension: 'png',
    width: 200,
    height: 100,
    align: DocxAlign.center,
  ))
  .build();

// Inline image in paragraph
.add(DocxParagraph(children: [
  DocxText('See image: '),
  DocxInlineImage(bytes: imageBytes, extension: 'png', width: 50, height: 50),
  DocxText(' above.'),
]))

Shapes & Drawings #

Create DrawingML shapes with 70+ presets:

// Basic shapes
DocxShapeBlock.rectangle(
  width: 200,
  height: 60,
  fillColor: DocxColor.blue,
  outlineColor: DocxColor.black,
  outlineWidth: 2,
  text: 'Click Me',
  align: DocxAlign.center,
)

DocxShapeBlock.ellipse(width: 100, height: 100, fillColor: DocxColor.green)
DocxShapeBlock.circle(diameter: 80, fillColor: DocxColor.red)
DocxShapeBlock.triangle(width: 100, height: 100, fillColor: DocxColor.yellow)
DocxShapeBlock.star(points: 5, fillColor: DocxColor.gold)
DocxShapeBlock.diamond(width: 80, fillColor: DocxColor.purple)
DocxShapeBlock.rightArrow(width: 100, height: 40, fillColor: DocxColor.blue)
DocxShapeBlock.leftArrow(width: 100, height: 40, fillColor: DocxColor.red)

// Inline shapes in paragraph
.add(DocxParagraph(children: [
  DocxShape.circle(diameter: 30, fillColor: DocxColor.red),
  DocxText(' Red circle '),
  DocxShape.star(points: 5, fillColor: DocxColor.gold),
  DocxText(' Gold star'),
]))

Shape Presets #

Over 70 preset shapes including: rect, ellipse, triangle, diamond, star4, star5, star6, rightArrow, leftArrow, upArrow, downArrow, heart, lightning, flowChartProcess, flowChartDecision, and many more.

HTML Parser #

Supported HTML Tags #

Supported CSS Properties #

color: red;                    /* Text color */
color: #FF5722;               /* Hex color */
color: dodgerblue;            /* CSS named color (141 supported) */
background-color: yellow;      /* Background/shading */
font-size: 16px;              /* Font size */
font-weight: bold;            /* Bold */
font-style: italic;           /* Italic */
text-align: center;           /* Alignment */
text-decoration: underline;   /* Underline/strikethrough */

CSS Named Colors #

All 141 W3C CSS3 Extended Color Keywords are supported:

<span style="color: dodgerblue;">DodgerBlue</span>
<span style="color: mediumvioletred;">MediumVioletRed</span>
<span style="color: darkolivegreen;">DarkOliveGreen</span>
<span style="color: papayawhip;">PapayaWhip</span>

Including grey/gray variations: grey, darkgrey, lightgrey, etc.

Example #

final html = '''
<div style="background-color: #f0f0f0; padding: 10px;">
  <h1 style="color: navy;">Report Title</h1>
  <p>This is <span style="color: red; font-weight: bold;">important</span> text.</p>
  <table border="1">
    <tr style="background-color: #4472C4; color: white;">
      <th>Name</th>
      <th>Status</th>
    </tr>
    <tr>
      <td>Task 1</td>
      <td style="background-color: lightgreen;">Complete</td>
    </tr>
  </table>
</div>
''';

final elements = await DocxParser.fromHtml(html);

Markdown Parser #

Supported Syntax #

Nested Lists #

- Level 1
    - Level 2
        - Level 3
    - Level 2
- Level 1

Nested lists are automatically converted to multi-level Word lists with proper indentation.

Tables with Alignment #

| Left | Center | Right |
|:-----|:------:|------:|
| L    | C      | R     |

DOCX Reader & Editor #

Loading an Existing Document #

// From file path
final doc = await DocxReader.load('existing.docx');

// From bytes
final bytes = await File('existing.docx').readAsBytes();
final doc = await DocxReader.loadFromBytes(bytes);

Accessing Elements #

for (final element in doc.elements) {
  if (element is DocxParagraph) {
    for (final child in element.children) {
      if (child is DocxText) {
        print('Text: ${child.content}');
        print('Bold: ${child.fontWeight == DocxFontWeight.bold}');
        print('Color: ${child.color?.hex}');
      }
    }
  } else if (element is DocxTable) {
    print('Table with ${element.rows.length} rows');
  } else if (element is DocxList) {
    print('List with ${element.items.length} items');
  }
}

Modifying and Re-Saving #

// Load document
final doc = await DocxReader.load('report.docx');

// Modify elements
final modifiedElements = <DocxNode>[];
for (final element in doc.elements) {
  if (element is DocxParagraph) {
    // Find and replace text
    final newChildren = element.children.map((child) {
      if (child is DocxText) {
        return DocxText(
          child.content.replaceAll('OLD', 'NEW'),
          fontWeight: child.fontWeight,
          color: child.color,
        );
      }
      return child;
    }).toList();
    modifiedElements.add(DocxParagraph(children: newChildren));
  } else {
    modifiedElements.add(element);
  }
}

// Add new content
modifiedElements.add(DocxParagraph.text('Added on: ${DateTime.now()}'));

// Create new document preserving metadata
final editedDoc = DocxBuiltDocument(
  elements: modifiedElements,
  // Preserve original document properties
  section: doc.section,
  stylesXml: doc.stylesXml,
  numberingXml: doc.numberingXml,
);

// Save
await DocxExporter().exportToFile(editedDoc, 'report_edited.docx');

Round-Trip Pipeline #

// Load → Parse → Modify → Export
final original = await DocxReader.load('input.docx');

// All formatting, lists, tables, shapes are preserved
final elements = List<DocxNode>.from(original.elements);

// Add new content
elements.add(DocxParagraph.heading2('New Section'));
elements.add(DocxParagraph.text('Content added programmatically.'));

// Export with preserved metadata
final output = DocxBuiltDocument(
  elements: elements,
  stylesXml: original.stylesXml,
  numberingXml: original.numberingXml,
);

await DocxExporter().exportToFile(output, 'output.docx');

Sections & Page Layout #

final doc = DocxDocumentBuilder()
  .section(
    orientation: DocxPageOrientation.portrait,
    pageSize: DocxPageSize.a4,
    backgroundColor: DocxColor('#F0F8FF'),
    header: DocxHeader(children: [
      DocxParagraph.text('Company Name', align: DocxAlign.right),
    ]),
    footer: DocxFooter(children: [
      DocxParagraph.text('Page 1', align: DocxAlign.center),
    ]),
  )
  .h1('Document Title')
  .p('Content...')
  .build();

Multi-Section Documents #

docx()
  .p('Portrait section content')
  .addSectionBreak(DocxSectionDef(
    orientation: DocxPageOrientation.portrait,
  ))
  .p('Landscape section content')
  .addSectionBreak(DocxSectionDef(
    orientation: DocxPageOrientation.landscape,
  ))
  .build();

Font Embedding #

Embed custom fonts with OOXML-compliant obfuscation:

import 'dart:io';

final fontBytes = await File('fonts/Roboto-Regular.ttf').readAsBytes();

final doc = DocxDocumentBuilder()
  .addFont('Roboto', fontBytes)
  .add(DocxParagraph(children: [
    DocxText('Custom font text', fontFamily: 'Roboto'),
  ]))
  .build();

Note: Fonts are automatically obfuscated per the OpenXML specification to ensure compatibility with Microsoft Word.

API Reference #

DocxDocumentBuilder #

DocxExporter #

DocxReader #

DocxParser #

MarkdownParser #

Troubleshooting #

Common Issues #

Q: Fonts don't display correctly in Word

A: Ensure the font is embedded using addFont(). Embedded fonts are obfuscated per OpenXML spec.

Q: Images don't appear

A: Verify image bytes are valid and extension matches format (png, jpg, gif).

Q: Lists don't have bullets/numbers

A: Ensure you're using the fluent API (bullet(), numbered()) or properly structured DocxList with DocxListItem.

Q: Colors look wrong

A: Use 6-digit hex codes without # prefix for shadingFill. For DocxColor, you can use #RRGGBB or plain RRGGBB.

Examples #

See the example/ directory for comprehensive examples:

• manual_builder_example.dart - All builder API features
• html_parser_example.dart - HTML to DOCX
• markdown_parser_example.dart - Markdown to DOCX
• reader_editor_example.dart - Read, edit, save workflow

License #

MIT License - see LICENSE for details.

Contributing #

Contributions welcome! Please read our contributing guidelines and submit PRs to the main repository.