tabula-sharp
tabula-sharp is a library for extracting tables from PDF files — it is a port of tabula-java
- Supports .NET 6, .NET Core 3.1, .NET Standard 2.0, .NET Framework 4.52, 4.6, 4.61, 4.62, 4.7
- No java bindings
NuGet packages available on the releases page and on www.nuget.org:
Differences with tabula-java
- Uses PdfPig, and not PdfBox.
- Coordinate system starts from the bottom left point (going up) of the page, and not from the top left point (going down).
- The
NurminenDetectionAlgorithmis replaced bySimpleNurminenDetectionAlgorithm, because it requieres an image management library. - Table results might be different because of the way PdfPig builds Letters bounding box.
Usage
Stream mode - BasicExtractionAlgorithm
using (PdfDocument document = PdfDocument.Open("doc.pdf", new ParsingOptions() { ClipPaths = true }))
{
ObjectExtractor oe = new ObjectExtractor(document);
PageArea page = oe.Extract(1);
// detect canditate table zones
SimpleNurminenDetectionAlgorithm detector = new SimpleNurminenDetectionAlgorithm();
var regions = detector.Detect(page);
IExtractionAlgorithm ea = new BasicExtractionAlgorithm();
List<Table> tables = ea.Extract(page.GetArea(regions[0].BoundingBox)); // take first candidate area
var table = tables[0];
var rows = table.Rows;
}Lattice mode - SpreadsheetExtractionAlgorithm
using (PdfDocument document = PdfDocument.Open("doc.pdf", new ParsingOptions() { ClipPaths = true }))
{
ObjectExtractor oe = new ObjectExtractor(document);
PageArea page = oe.Extract(1);
IExtractionAlgorithm ea = new SpreadsheetExtractionAlgorithm();
List<Table> tables = ea.Extract(page);
var table = tables[0];
var rows = table.Rows;
}Results
Stream mode - BasicExtractionAlgorithm
Lattice mode - SpreadsheetExtractionAlgorithm
