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‎.changeset/pre.json‎

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},
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"changesets": [
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"commands-svelte-use-current",
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"engine-orchestrator-architecture",
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"fix-document-manager-empty-array",
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"fix-i18n-vue-locale-reactivity",
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"hidden-items-dependency-rules",

‎packages/core/CHANGELOG.md‎

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# @embedpdf/core
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## 2.0.0-next.3
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## 2.0.0-next.2
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## 2.0.0-next.1

‎packages/core/package.json‎

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{
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"name": "@embedpdf/core",
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"version": "2.0.0-next.2",
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"version": "2.0.0-next.3",
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"type": "module",
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"license": "MIT",
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"main": "./dist/index.cjs",

‎packages/engines/CHANGELOG.md‎

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# @embedpdf/engines
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## 2.0.0-next.3
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### Major Changes
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- [`f13b2d4`](https://github.com/embedpdf/embed-pdf-viewer/commit/f13b2d48eebd7b2f02e881fee80f68bf4219c1d6) by [@bobsingor](https://github.com/bobsingor) – # Major Engine Architecture Refactor: Orchestrator Layer & Image Encoding Pool
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This release introduces a significant architectural improvement to the PDF engine system, separating concerns between execution and orchestration while adding parallel image encoding capabilities.
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## Breaking Changes
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### Engine Class Renamed
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- `PdfiumEngine` → `PdfiumNative` (the "dumb" executor)
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- New `PdfEngine` class wraps executors with orchestration logic
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- Factory functions (`createPdfiumEngine`) now return the orchestrated `PdfEngine<Blob>` wrapper
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**Migration:**
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```typescript
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// Before
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import { PdfiumEngine } from '@embedpdf/engines';
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const engine = new PdfiumEngine(wasmModule, { logger });
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// After
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import { createPdfiumEngine } from '@embedpdf/engines/pdfium-worker-engine';
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// or
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import { createPdfiumEngine } from '@embedpdf/engines/pdfium-direct-engine';
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const engine = await createPdfiumEngine('/wasm/pdfium.wasm', {
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logger,
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encoderPoolSize: 2, // Optional: parallel image encoding
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});
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```
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### Rendering Methods Changed
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- `renderPage()` → Returns final encoded result (Blob) via orchestrator
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- `renderPageRaw()` → New method, returns raw `ImageData` from executor
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- `renderThumbnail()` → `renderThumbnailRaw()` for raw data
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- `renderPageAnnotation()` → `renderPageAnnotationRaw()` for raw data
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### Search API Simplified
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- `searchAllPages()` → Now orchestrated at the `PdfEngine` level
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- `searchInPage()` → New single-page search method in executor
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- Progress tracking improved with proper `CompoundTask` support
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### Document Loading Changes
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- Removed `openDocumentFromLoader()` - range request loading removed from executor
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- Removed `openDocumentUrl()` - URL fetching now handled in orchestrator
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- `openDocumentBuffer()` remains as the primary method in executor
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## New Features
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### 1. Orchestrator Architecture
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New three-layer architecture:
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- **Executor Layer** (`PdfiumNative`, `RemoteExecutor`): "Dumb" workers that execute PDF operations
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- **Orchestrator Layer** (`PdfEngine`): "Smart" coordinator with priority queues and scheduling
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- **Worker Pool** (`ImageEncoderWorkerPool`): Parallel image encoding
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Benefits:
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- Priority-based task scheduling
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- Visibility-aware rendering (viewport-based prioritization)
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- Parallel image encoding (non-blocking)
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- Automatic task cancellation and cleanup
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### 2. Image Encoder Worker Pool
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```typescript
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const engine = await createPdfiumEngine('/wasm/pdfium.wasm', {
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encoderPoolSize: 2, // Creates 2 encoder workers
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});
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```
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- Offloads `OffscreenCanvas.convertToBlob()` from main PDFium worker
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- Prevents blocking during image encoding
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- Configurable pool size (default: 2 workers)
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- Automatic load balancing
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### 3. Task Queue System
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New `WorkerTaskQueue` with:
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- Priority levels: `CRITICAL`, `HIGH`, `MEDIUM`, `LOW`
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- Visibility-based ranking for render tasks
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- Automatic task deduplication
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- Graceful cancellation
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### 4. CompoundTask for Multi-Page Operations
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New `CompoundTask` class for aggregating results:
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```typescript
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// Automatic progress tracking
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const task = engine.searchAllPages(doc, 'keyword');
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task.onProgress((progress) => {
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console.log(`Page ${progress.page} complete`);
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});
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```
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- `CompoundTask.gather()` - Like `Promise.all()` with progress
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- `CompoundTask.gatherIndexed()` - Returns `Record<number, Result>`
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- `CompoundTask.first()` - Like `Promise.race()`
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- Automatic child task cleanup
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## API Additions
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### Models Package
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- `CompoundTask` - Multi-task aggregation with progress
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- `ImageConversionTypes` type refinements
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- `PdfAnnotationsProgress.result` (renamed from `annotations`)
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### Engines Package
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New exports:
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- `PdfEngine` - Main orchestrator class
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- `RemoteExecutor` - Worker communication proxy
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- `ImageEncoderWorkerPool` - Image encoding pool
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- `WorkerTaskQueue` - Priority-based queue
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- `PdfiumNative` - Renamed from `PdfiumEngine`
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New image converters:
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- `browserImageDataToBlobConverter` - Legacy converter
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- `createWorkerPoolImageConverter()` - Pool-based converter
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- `createHybridImageConverter()` - Fallback support
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### Plugin-Render Package
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New config options:
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```typescript
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{
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render: {
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defaultImageType: 'image/webp',
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defaultImageQuality: 0.92
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}
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}
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```
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## Improvements
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- **Performance**: Parallel image encoding improves render throughput by ~40-60%
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- **Responsiveness**: Priority queues ensure visible pages render first
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- **Memory**: Better cleanup of completed tasks and worker references
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- **Logging**: Enhanced performance logging with duration tracking
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- **Developer Experience**: Clearer separation of concerns
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## 2.0.0-next.2
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## 2.0.0-next.1

‎packages/engines/package.json‎

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{
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"name": "@embedpdf/engines",
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"version": "2.0.0-next.2",
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"version": "2.0.0-next.3",
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"description": "Pluggable runtime layer that abstracts over multiple PDF engines (PDF-ium, Web Workers, mocks, etc.) to provide a unified API for rendering, search, annotation, and other document-level operations in EmbedPDF.",
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"type": "module",
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"main": "./dist/index.cjs",

‎packages/models/CHANGELOG.md‎

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# @embedpdf/models
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## 2.0.0-next.3
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### Minor Changes
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- [`f13b2d4`](https://github.com/embedpdf/embed-pdf-viewer/commit/f13b2d48eebd7b2f02e881fee80f68bf4219c1d6) by [@bobsingor](https://github.com/bobsingor) – # Major Engine Architecture Refactor: Orchestrator Layer & Image Encoding Pool
8+
9+
This release introduces a significant architectural improvement to the PDF engine system, separating concerns between execution and orchestration while adding parallel image encoding capabilities.
10+
11+
## Breaking Changes
12+
13+
### Engine Class Renamed
14+
- `PdfiumEngine` → `PdfiumNative` (the "dumb" executor)
15+
- New `PdfEngine` class wraps executors with orchestration logic
16+
- Factory functions (`createPdfiumEngine`) now return the orchestrated `PdfEngine<Blob>` wrapper
17+
18+
**Migration:**
19+
20+
```typescript
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// Before
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import { PdfiumEngine } from '@embedpdf/engines';
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const engine = new PdfiumEngine(wasmModule, { logger });
24+
25+
// After
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import { createPdfiumEngine } from '@embedpdf/engines/pdfium-worker-engine';
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// or
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import { createPdfiumEngine } from '@embedpdf/engines/pdfium-direct-engine';
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const engine = await createPdfiumEngine('/wasm/pdfium.wasm', {
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logger,
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encoderPoolSize: 2, // Optional: parallel image encoding
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});
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```
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36+
### Rendering Methods Changed
37+
- `renderPage()` → Returns final encoded result (Blob) via orchestrator
38+
- `renderPageRaw()` → New method, returns raw `ImageData` from executor
39+
- `renderThumbnail()` → `renderThumbnailRaw()` for raw data
40+
- `renderPageAnnotation()` → `renderPageAnnotationRaw()` for raw data
41+
42+
### Search API Simplified
43+
- `searchAllPages()` → Now orchestrated at the `PdfEngine` level
44+
- `searchInPage()` → New single-page search method in executor
45+
- Progress tracking improved with proper `CompoundTask` support
46+
47+
### Document Loading Changes
48+
- Removed `openDocumentFromLoader()` - range request loading removed from executor
49+
- Removed `openDocumentUrl()` - URL fetching now handled in orchestrator
50+
- `openDocumentBuffer()` remains as the primary method in executor
51+
52+
## New Features
53+
54+
### 1. Orchestrator Architecture
55+
56+
New three-layer architecture:
57+
- **Executor Layer** (`PdfiumNative`, `RemoteExecutor`): "Dumb" workers that execute PDF operations
58+
- **Orchestrator Layer** (`PdfEngine`): "Smart" coordinator with priority queues and scheduling
59+
- **Worker Pool** (`ImageEncoderWorkerPool`): Parallel image encoding
60+
61+
Benefits:
62+
- Priority-based task scheduling
63+
- Visibility-aware rendering (viewport-based prioritization)
64+
- Parallel image encoding (non-blocking)
65+
- Automatic task cancellation and cleanup
66+
67+
### 2. Image Encoder Worker Pool
68+
69+
```typescript
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const engine = await createPdfiumEngine('/wasm/pdfium.wasm', {
71+
encoderPoolSize: 2, // Creates 2 encoder workers
72+
});
73+
```
74+
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- Offloads `OffscreenCanvas.convertToBlob()` from main PDFium worker
76+
- Prevents blocking during image encoding
77+
- Configurable pool size (default: 2 workers)
78+
- Automatic load balancing
79+
80+
### 3. Task Queue System
81+
82+
New `WorkerTaskQueue` with:
83+
- Priority levels: `CRITICAL`, `HIGH`, `MEDIUM`, `LOW`
84+
- Visibility-based ranking for render tasks
85+
- Automatic task deduplication
86+
- Graceful cancellation
87+
88+
### 4. CompoundTask for Multi-Page Operations
89+
90+
New `CompoundTask` class for aggregating results:
91+
92+
```typescript
93+
// Automatic progress tracking
94+
const task = engine.searchAllPages(doc, 'keyword');
95+
task.onProgress((progress) => {
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console.log(`Page ${progress.page} complete`);
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});
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```
99+
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- `CompoundTask.gather()` - Like `Promise.all()` with progress
101+
- `CompoundTask.gatherIndexed()` - Returns `Record<number, Result>`
102+
- `CompoundTask.first()` - Like `Promise.race()`
103+
- Automatic child task cleanup
104+
105+
## API Additions
106+
107+
### Models Package
108+
- `CompoundTask` - Multi-task aggregation with progress
109+
- `ImageConversionTypes` type refinements
110+
- `PdfAnnotationsProgress.result` (renamed from `annotations`)
111+
112+
### Engines Package
113+
114+
New exports:
115+
- `PdfEngine` - Main orchestrator class
116+
- `RemoteExecutor` - Worker communication proxy
117+
- `ImageEncoderWorkerPool` - Image encoding pool
118+
- `WorkerTaskQueue` - Priority-based queue
119+
- `PdfiumNative` - Renamed from `PdfiumEngine`
120+
121+
New image converters:
122+
- `browserImageDataToBlobConverter` - Legacy converter
123+
- `createWorkerPoolImageConverter()` - Pool-based converter
124+
- `createHybridImageConverter()` - Fallback support
125+
126+
### Plugin-Render Package
127+
128+
New config options:
129+
130+
```typescript
131+
{
132+
render: {
133+
defaultImageType: 'image/webp',
134+
defaultImageQuality: 0.92
135+
}
136+
}
137+
```
138+
139+
## Improvements
140+
- **Performance**: Parallel image encoding improves render throughput by ~40-60%
141+
- **Responsiveness**: Priority queues ensure visible pages render first
142+
- **Memory**: Better cleanup of completed tasks and worker references
143+
- **Logging**: Enhanced performance logging with duration tracking
144+
- **Developer Experience**: Clearer separation of concerns
145+
3146
## 2.0.0-next.2
4147

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## 2.0.0-next.1

‎packages/models/package.json‎

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{
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"name": "@embedpdf/models",
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"version": "2.0.0-next.2",
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"version": "2.0.0-next.3",
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"private": false,
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"description": "Shared type definitions, data models, and utility helpers (geometry, tasks, logging, PDF primitives) that underpin every package in the EmbedPDF ecosystem.",
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"type": "module",

‎packages/pdfium/CHANGELOG.md‎

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# @embedpdf/pdfium
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## 2.0.0-next.3
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## 2.0.0-next.2
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## 2.0.0-next.1

‎packages/pdfium/package.json‎

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{
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"name": "@embedpdf/pdfium",
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"version": "2.0.0-next.2",
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"version": "2.0.0-next.3",
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"private": false,
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"description": "PDFium WebAssembly for the web platform. This package provides a powerful JavaScript interface to PDFium, enabling high-quality PDF rendering and manipulation directly in web applications.",
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"type": "module",

‎packages/plugin-annotation/CHANGELOG.md‎

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# @embedpdf/plugin-annotation
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## 2.0.0-next.3
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## 2.0.0-next.2
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## 2.0.0-next.1

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