Péter Szabó

I can't reproduce this bug, for me pdfsizeopt creates a PDF with images having */Filter/JBIG2Decode*, see the attached file. Please upgrade to the latest pdfsizeopt, try again, and if you...

You may want to upload a test input PDF and a pdfsizeopt command-line with Multivalent. Maybe it's possible to make pdfsizeopt autodetect the situation, and prevent Multivalent from touching the...

Thank you for suggesting this workaround feature! This should be easy to implement. Please attach a small example PDF with XMP matadata to the issue. Please note that this is...

By principle, pdfsizeopt is not doing any lossy optimization. Until this principle is relaxed, pngquant is not a good replacement for pngout. Even if the principle gets relaxed, pngquant is...

Thank you! Please share more files like this as you find them! They highlight an improvement (extension) opportunity for pdfsizeopt. Please note that it's impossible for pdfsizeopt (without Multivalent) to...

Oddly enough, Multivalent is very slow (slower than 10 minutes) for me on *numerical-analysis.pdf*, possibly it's running in an infinite loop. Could you please attach the console output of `time...

I managed to run Multivalent on *numerical-analysis.pdf*, and I can reproduce your results. No need to send any files.

Thank you for trying Zopfli compression, and thank you for publishing your measurements. Could you please upload `testpdf.pdf` to make your measurements repeatable? Zopfli will not be enabled by default...

Thank you for the data points! It's nice to learn about pngwolf-zopfli. Please note that PNG compression is offtopic in this issue (because it's about Flate compression for non-images). To...

Thank you for proposing this! I keep the issue open to track the development in this area. (Don't expect fast progress though.)