- my ($fname, $mime_type) = Sesse::pr0n::Common::ensure_cached($r, $filename, $id, $dbwidth, $dbheight, $infobox, $dpr, $xres, $yres);
+ my ($fname, $mime_type);
+ my $accept = $r->header('Accept');
+ my $avif_ok = (defined($accept) && $accept =~ /(^|,)image\/avif($|,|;)/);
+ my $jxl_ok = (defined($accept) && $accept =~ /(^|,)image\/jxl($|,|;)/);
+ ($fname, $mime_type) = Sesse::pr0n::Common::ensure_cached($r, $avif_ok, $jxl_ok, $filename, $id, $dbwidth, $dbheight, $xres, $yres);
+ $res->header('Vary' => 'Accept');