# Pdftract

.NET SDK for pdftract - PDF extraction and conformance testing.

## Installation

```bash
dotnet add package Pdftract --version {{ version }}
```

## Usage

### Basic extract

```csharp
using Pdftract;
using Pdftract.Codegen;

using var client = new Pdftract();
var doc = await client.ExtractAsync(new PathSource("document.pdf"));
Console.WriteLine($"Pages: {doc.Pages.Count}");
```

### Extract with OCR

```csharp
var options = new ExtractOptions
{
    OcrLanguage = "eng",
    OcrThreshold = 0.7
};

var doc = await client.ExtractAsync(new PathSource("scanned.pdf"), options);
```

### Search

```csharp
await foreach (var match in client.SearchAsync(new PathSource("document.pdf"), "invoice"))
{
    Console.WriteLine($"Found on page {match.Page}: {match.Text}");
}
```

### Stream extraction

```csharp
await foreach (var page in client.ExtractStreamAsync(new PathSource("large.pdf")))
{
    Console.WriteLine($"Page {page.Page}: {page.Blocks.Count} blocks");
}
```

## Binary version compatibility

This SDK requires pdftract {{ version }}. Download from:
https://github.com/jedarden/pdftract/releases/tag/v{{ version }}

## Troubleshooting

### Binary not found
Ensure `pdftract` is on your PATH. The SDK probes PATH for the executable.

### Version mismatch
The SDK will refuse to invoke mismatched binary versions. Install the correct version.

### Network failure
For remote URLs, check your network connection and TLS certificate chain.