// load image as data stream
kRecLoadImgDataStreamF(sid, jpgfile, &hPage, 0);
// save image into FF_PDF format – preserving compression quality and size
kRecSaveImgF(sid, outpdf, FF_PDF, hPage, II_ORIGINAL, false);

// load image as data stream
kRecLoadImgDataStreamF(sid, jpgfile, &hPage, 0);
kRecDecompressImgDataStream(sid, hPage); // decompress DataStream only for preprocessing
kRecPreprocessImg(sid, hPage); // perform the necessary transformations
// save image into FF_PDF format - still the DataStream will be saved but with transformations!
kRecSaveImgF(sid, outpdf, FF_PDF, hPage, II_CURRENT, false);

kRecSetDTXTFormat(sid, DTXT_IOTPDF);
// load image as data stream
kRecLoadImgDataStreamF(sid, jpgfile, &hPage, 0);
// decompress DataStream only for internal processing
kRecDecompressImgDataStream(sid, hPage);
kRecPreprocessImg(sid, hPage);
kRecRecognize(sid, hPage, NULL);
// create searchable PDF preserving compression quality, with readable orientation (II_CURRENT)
kRecConvert2DTXTEx(sid, &hPage, 1, II_CURRENT, outpdf); // use II_ORIGINAL for original orientation

• FF_JPG/JPG2K

• FF_PDF/PDF_MRC

• DTXT_IOTPDF/IOTPDF_MRC

kRecSetCompressionLevel(sid, 1); // Level 1
kRecSetCompressionTradeoff(sid, COMPRESSION_ADVANCED);

• FF_JPG/JPG2K

• FF_PDF/PDF_MRC

• DTXT_IOTPDF/IOTPDF_MRC

kRecSetCompressionTradeoff(sid, COMPRESSION_FAST);

If quality is more important than file size, set kRecSetCompressionLevel(sid, 5); // Level 4-5

If file size is more important than quality, set kRecSetCompressionLevel(sid, 1); // Level 1-2

For DTXT_IOTPDF_MRC, set Kernel.OcrMgr.Images.KeepOcrImage = TRUE