SwiftJPEG FAQs

If your question is not answered here you can post a question to the SwiftJPEG Support Forum and one of our developers will answer it directly.

1. How does SwiftJPEG compression differ from standard JPEG compressors?

SwiftJPEG generally outperforms standard JPEG compressors with regard to compression time and compression ratio achieved.

2. Are SwiftJPEG output files compatible with standard JPEG files?

Yes, they may be read with any standard JPEG viewer.

3. How much compression should I expect?

Compression ratios in the 20 to 1 up to 30 to 1 are typical.

4. Can I still see human readable text in a SwiftJPEG output file?

Yes, SwiftJPEG does less compression in "interesting" portions of an image, while doing more in areas that are not likely to contain text.

5. Can SwiftJPEG tell me where a likely address label is in an image of a package after compression?

Yes, SwiftJPEG can point out areas that are likely to contain address information.

6. Can I embed a comment field in SwiftJPEG output?

Yes, like the JPEG standard, SwiftJPEG allows the user comments to be placed with the compressed data.

7. Can I compress of region of interest (ROI) within a larger image?

Yes, a rectangular subregion within a image may be specified.

8. How does SwiftJPEG handle mirror imaged files?

If you tell SwiftJPEG that the image you want to compress is mirror imaged, it will produce an output file that will appear unmirrored when decompressed.