},
max_dimensions => {
name => 'maximum image dimensions',
+ score => {
+ jpeg => 3,
+ png => 4,
+ jp2k => 5,
+ webp => 1,
+ heic => 2,
+ avif => 3,
+ jxl => 4,
+ },
data => {
jpeg => '65k²', # 2**16
png => '2G²', # 2**31
jp2k => '4G²', # 2**32
webp => '16k²', # 2**14
- heic => '8k×4k+', # 2**13
- avif => '8k×4k+',
+ heic => '8k×4k+', # 8193x4320
+ avif => '65k²+', # 2**16, 8193x4320 with profile
jxl => '1G²', # 2**30
},
},
max_bitdepth => {
name => 'precision (max. bit depth)',
+ score => {
+ jpeg => 2,
+ png => 4,
+ jp2k => 5,
+ webp => 2,
+ heic => 3,
+ avif => 3,
+ jxl => 5,
+ },
data => {
jpeg => 8,
png => 16,
},
max_channels => {
name => 'maximum number of channels',
+ score => {
+ jpeg => 2,
+ png => 2,
+ jp2k => 5,
+ webp => 2,
+ heic => 3,
+ avif => 3,
+ jxl => 4,
+ },
data => {
jpeg => 4, # cmyk
png => 4, # cmyk
animation => {
name => 'supports animation',
score => {
- jpeg => 'n',
- png => 'y',
- jp2k => 'n',
+ jpeg => 2,
+ png => 4,
+ jp2k => 2,
webp => 'y',
heic => 'y',
avif => 'y',
royalties => {
name => 'royalty-free',
score => {
- jpeg => 'y',
- png => 'y',
- jp2k => 'y',
- webp => 'y',
- heic => 'n',
- avif => 'y',
- jxl => 'y',
+ jpeg => 5,
+ png => 5,
+ gif => 5, # patents expired
+ jp2k => 3, # specs not freely available
+ webp => 4, # submarine risk
+ heic => 'n', # patents enforced
+ avif => 4,
+ jxl => 4,
},
},
},