Great tool! A feature suggestion: a common complaint about PDFs compiled from e.g. LaTeX is that text elements like "fi" in words such as "profile" cannot be correctly copied due to ligature encoding (e.g. try copying from the title in [1]: "profile" becomes "prole" and "identifiers" becomes "identiers"; also see discussion at [2]). An option to automatically fix this within the viewer could be a desirable feature — though admittedly I haven't thought this through and I'm not sure how feasible it is to implement such a feature at the viewer level.

[1] https://www.unicode.org/L2/L2022/22230-math-profile.pdf

[2] https://tex.stackexchange.com/questions/33476/why-cant-fi-be...