header_png="\x89PNG\x0d\x0a\x1a\x0a"

section_idat="IDAT"
section_iend="IEND"
section_ihdr="IHDR"
section_plte="PLTE"
section_trns="tRNS"
section_chrm="cHRM"
section_gama="gAMA"
section_iccp="iCCP"
section_sbit="sBIT"
section_srgb="sRGB"
section_text="tEXt"
section_ztxt="zTXt"
section_itxt="iTXt"
section_bkgd="bKGD"
section_hist="hIST"
section_phys="pHYs"
section_splt="sPLT"
section_time="tIME"
section_offs="oFFs"
section_exif="eXIf"

# not parsed by libspng

#section_frac="fRAc"
#section_pcal="pCAL"
#section_scal="sCAL"
#section_ster="sTER"
#section_gifg="gIFg"
#section_gift="gIFt"
#section_gifx="gIFx"