Is there a PNG viewer that can display text chunk metadata? Ideally, I'd like a way to view arbitrary chunks.
Found a partial solution, the pngcheck tool can print text chunks although it wont display the image.
pngcheck -c -v -t foobar.png
These are the relevant options for showing PNG chunks:
-7 print contents of tEXt chunks, escape chars >=128 (for 7-bit terminals) -c colorize output (for ANSI terminals) -p print contents of PLTE, tRNS, hIST, sPLT and PPLT (can be used with -q) -t print contents of tEXt chunks (can be used with -q) -v test verbosely (print most chunk data)