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feat(pdfengines): optimize PDF images to reduce file size (#359)

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This commit is contained in:
Julien Neuhart
2026-08-13 19:39:09 +02:00
parent 7a730cfdc2
commit 1ac1d9887e
29 changed files with 776 additions and 5 deletions
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5
pkg/modules/libreoffice/pdfengine/pdfengine.go
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@@ -60,6 +60,11 @@ func (engine *LibreOfficePdfEngine) Flatten(ctx context.Context, logger *slog.Lo
return fmt.Errorf("flatten PDF with LibreOffice: %w", gotenberg.ErrPdfEngineMethodNotSupported)
}
// OptimizeImages is not available in this implementation.
func (engine *LibreOfficePdfEngine) OptimizeImages(ctx context.Context, logger *slog.Logger, imageQuality int, inputPath string) error {
return fmt.Errorf("optimize PDF images with LibreOffice: %w", gotenberg.ErrPdfEngineMethodNotSupported)
}
// Convert converts the given PDF to a specific PDF format. Currently, only the
// PDF/A-1b, PDF/A-2b, PDF/A-3b and PDF/UA formats are available. If another
// PDF format is requested, it returns a [gotenberg.ErrPdfFormatNotSupported]

6
pkg/modules/libreoffice/routes.go
View File

@@ -44,6 +44,7 @@ func convertRoute(libreOffice libreofficeapi.Uno, engine gotenberg.PdfEngine) ap
angle, rotatePages := pdfengines.FormDataPdfRotate(form, false)
embedsMetadata := pdfengines.FormDataPdfEmbedsMetadata(form)
facturX, facturxXmlPath := pdfengines.FormDataPdfFacturX(form)
optimizeImages, imageQuality := pdfengines.FormDataPdfOptimize(form)
zeroValuedSplitMode := gotenberg.SplitMode{}
@@ -515,6 +516,11 @@ func convertRoute(libreOffice libreofficeapi.Uno, engine gotenberg.PdfEngine) ap
}
}
err = pdfengines.OptimizeStub(ctx, engine, optimizeImages, imageQuality, outputPaths)
if err != nil {
return fmt.Errorf("optimize PDF images: %w", err)
}
needsConvertStub := !nativePdfFormats ||
(nativePdfFormats && splitMode != zeroValuedSplitMode) ||
(nativePdfFormats && hasPostProcessing)