WPT
wpt / html / semantics / embedded-content / the-img-element / srcset / parse-a-srcset-attribute.html
Spec: HTML ↗
Runs: Chrome 155.0.8043.0 (wpt@b89af32bc, 2026-09-05) | Firefox 157.0a1 (wpt@b89af32bc, 2026-09-05) | Safari 251 preview (wpt@b89af32bc, 2026-09-05) | Ladybird 1.0-f437c (wpt@b89af32bc, 2026-09-06) | Servo Servo 0.6 (wpt@2c385f65e, 2026-09-04) | Blitz a50cb8971 (wpt@a95401e4e, 2026-09-03)
View on the Blitz WPT dashboard | Open test on wpt.live | wpt.fyi
| Chrome | Firefox | Safari | Ladybird | Servo | Blitz | |
|---|---|---|---|---|---|---|
| Total | 236/236 | 236/236 | 236/236 | 227/236 | 236/236 | NOT RUN |
| Subtest | Chrome | Firefox | Safari | Ladybird | Servo | Blitz |
|---|---|---|---|---|---|---|
| "" | PASS | PASS | PASS | PASS | PASS | — |
| "," | PASS | PASS | PASS | PASS | PASS | — |
| ",,," | PASS | PASS | PASS | PASS | PASS | — |
| " data:,a 1x " | PASS | PASS | PASS | PASS | PASS | — |
| "\t\tdata:,a\t\t1x\t\t" | PASS | PASS | PASS | PASS | PASS | — |
| "\n\ndata:,a\n\n1x\n\n" | PASS | PASS | PASS | PASS | PASS | — |
| "\v\vdata:,a\v\v1x\v\v" | PASS | PASS | PASS | PASS | PASS | — |
| "\f\fdata:,a\f\f1x\f\f" | PASS | PASS | PASS | PASS | PASS | — |
| "\r\rdata:,a\r\r1x\r\r" | PASS | PASS | PASS | PASS | PASS | — |
| "\x0e\x0edata:,a\x0e\x0e1x\x0e\x0e" | PASS | PASS | PASS | PASS | PASS | — |
| "\x0f\x0fdata:,a\x0f\x0f1x\x0f\x0f" | PASS | PASS | PASS | PASS | PASS | — |
| "\x10\x10data:,a\x10\x101x\x10\x10" | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a" | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a " | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a ," | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a," | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a, " | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a,,," | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a,, , " | PASS | PASS | PASS | PASS | PASS | — |
| " data:,a" | PASS | PASS | PASS | PASS | PASS | — |
| ",,,data:,a" | PASS | PASS | PASS | PASS | PASS | — |
| " , ,,data:,a" | PASS | PASS | PASS | PASS | PASS | — |
| " data:,a" | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a " | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 1x" | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 1x " | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 1x," | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a ( , data:,b 1x, ), data:,c" | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a ((( , data:,b 1x, ), data:,c" | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a [ , data:,b 1x, ], data:,c" | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a { , data:,b 1x, }, data:,c" | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a \" , data:,b 1x, \", data:,c" | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a \\,data:;\\,b, data:,c" | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a, data:,b (" | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a, data:,b ( " | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a, data:,b (," | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a, data:,b (x" | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a, data:,b ()" | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a (, data:,b" | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a /*, data:,b, data:,c */" | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a //, data:,b" | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a foo" | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a foo foo" | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a foo 1x" | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a foo 1x foo" | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a foo 1w" | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a foo 1w foo" | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 1x 1x" | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 1w 1w" | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 1w 1x" | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 1x 1w" | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 1w 1h" | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 1h 1w" | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 1h 1h" | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 1h 1x" | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 1h 1w 1x" | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 1x 1w 1h" | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 1w" | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 1h" | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 1h foo" | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a foo 1h" | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 0w" | PASS | PASS | PASS | FAIL | PASS | — |
| "data:,a -1w" | PASS | PASS | PASS | FAIL | PASS | — |
| "data:,a 1w -1w" | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 1.0w" | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 1w 1.0w" | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 1e0w" | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 1w 1e0w" | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 1www" | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 1w 1www" | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a +1w" | PASS | PASS | PASS | FAIL | PASS | — |
| "data:,a 1w +1w" | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 1W" | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 1w 1W" | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a Infinityw" | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 1w Infinityw" | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a NaNw" | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 1w NaNw" | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 0x1w" | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 0X1w" | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 1\x01w" (trailing U+0001) | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 1 w" (trailing U+00A0) | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 1 w" (trailing U+1680) | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 1 w" (trailing U+2000) | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 1 w" (trailing U+2001) | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 1 w" (trailing U+2002) | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 1 w" (trailing U+2003) | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 1 w" (trailing U+2004) | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 1 w" (trailing U+2005) | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 1 w" (trailing U+2006) | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 1 w" (trailing U+2007) | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 1 w" (trailing U+2008) | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 1 w" (trailing U+2009) | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 1 w" (trailing U+200A) | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 1w" (trailing U+200C) | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 1w" (trailing U+200D) | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 1 w" (trailing U+202F) | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 1 w" (trailing U+205F) | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 1 w" (trailing U+3000) | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 1w" (trailing U+FEFF) | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a \x011w" (leading U+0001) | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 1w" (leading U+00A0) | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 1w" (leading U+1680) | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 1w" (leading U+2000) | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 1w" (leading U+2001) | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 1w" (leading U+2002) | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 1w" (leading U+2003) | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 1w" (leading U+2004) | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 1w" (leading U+2005) | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 1w" (leading U+2006) | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 1w" (leading U+2007) | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 1w" (leading U+2008) | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 1w" (leading U+2009) | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 1w" (leading U+200A) | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 1w" (leading U+200C) | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 1w" (leading U+200D) | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 1w" (leading U+202F) | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 1w" (leading U+205F) | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 1w" (leading U+3000) | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 1w" (leading U+FEFF) | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 0x" | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a -0x" | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 1x -0x" | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a -1x" | PASS | PASS | PASS | FAIL | PASS | — |
| "data:,a 1x -1x" | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 1e0x" | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 1E0x" | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 1e-1x" | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 1.5e1x" | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a -x" | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a .x" | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a -.x" | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 1.x" | PASS | PASS | PASS | FAIL | PASS | — |
| "data:,a .5x" | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a .5e1x" | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 1x 1.5e1x" | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 1x 1e1.5x" | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 1.0x" | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 1x 1.0x" | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a +1x" | PASS | PASS | PASS | FAIL | PASS | — |
| "data:,a 1X" | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a Infinityx" | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a NaNx" | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 0x1x" | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 0X1x" | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 1\x01x" (trailing U+0001) | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 1 x" (trailing U+00A0) | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 1 x" (trailing U+1680) | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 1 x" (trailing U+2000) | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 1 x" (trailing U+2001) | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 1 x" (trailing U+2002) | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 1 x" (trailing U+2003) | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 1 x" (trailing U+2004) | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 1 x" (trailing U+2005) | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 1 x" (trailing U+2006) | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 1 x" (trailing U+2007) | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 1 x" (trailing U+2008) | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 1 x" (trailing U+2009) | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 1 x" (trailing U+200A) | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 1x" (trailing U+200C) | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 1x" (trailing U+200D) | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 1 x" (trailing U+202F) | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 1 x" (trailing U+205F) | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 1 x" (trailing U+3000) | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 1x" (trailing U+FEFF) | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a \x011x" (leading U+0001) | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 1x" (leading U+00A0) | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 1x" (leading U+1680) | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 1x" (leading U+2000) | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 1x" (leading U+2001) | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 1x" (leading U+2002) | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 1x" (leading U+2003) | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 1x" (leading U+2004) | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 1x" (leading U+2005) | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 1x" (leading U+2006) | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 1x" (leading U+2007) | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 1x" (leading U+2008) | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 1x" (leading U+2009) | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 1x" (leading U+200A) | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 1x" (leading U+200C) | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 1x" (leading U+200D) | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 1x" (leading U+202F) | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 1x" (leading U+205F) | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 1x" (leading U+3000) | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 1x" (leading U+FEFF) | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 1w 0h" | PASS | PASS | PASS | FAIL | PASS | — |
| "data:,a 1w -1h" | PASS | PASS | PASS | FAIL | PASS | — |
| "data:,a 1w 1.0h" | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 1w 1e0h" | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 1w 1hhh" | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 1w +1h" | PASS | PASS | PASS | FAIL | PASS | — |
| "data:,a 1w 1H" | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 1w Infinityh" | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 1w NaNh" | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 0x1h" | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 0X1h" | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 1w 1\x01h" (trailing U+0001) | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 1w 1 h" (trailing U+00A0) | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 1w 1 h" (trailing U+1680) | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 1w 1 h" (trailing U+2000) | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 1w 1 h" (trailing U+2001) | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 1w 1 h" (trailing U+2002) | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 1w 1 h" (trailing U+2003) | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 1w 1 h" (trailing U+2004) | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 1w 1 h" (trailing U+2005) | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 1w 1 h" (trailing U+2006) | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 1w 1 h" (trailing U+2007) | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 1w 1 h" (trailing U+2008) | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 1w 1 h" (trailing U+2009) | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 1w 1 h" (trailing U+200A) | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 1w 1h" (trailing U+200C) | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 1w 1h" (trailing U+200D) | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 1w 1 h" (trailing U+202F) | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 1w 1 h" (trailing U+205F) | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 1w 1 h" (trailing U+3000) | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 1w 1h" (trailing U+FEFF) | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 1w \x011h" (leading U+0001) | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 1w 1h" (leading U+00A0) | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 1w 1h" (leading U+1680) | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 1w 1h" (leading U+2000) | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 1w 1h" (leading U+2001) | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 1w 1h" (leading U+2002) | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 1w 1h" (leading U+2003) | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 1w 1h" (leading U+2004) | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 1w 1h" (leading U+2005) | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 1w 1h" (leading U+2006) | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 1w 1h" (leading U+2007) | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 1w 1h" (leading U+2008) | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 1w 1h" (leading U+2009) | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 1w 1h" (leading U+200A) | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 1w 1h" (leading U+200C) | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 1w 1h" (leading U+200D) | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 1w 1h" (leading U+202F) | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 1w 1h" (leading U+205F) | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 1w 1h" (leading U+3000) | PASS | PASS | PASS | PASS | PASS | — |
| "data:,a 1w 1h" (leading U+FEFF) | PASS | PASS | PASS | PASS | PASS | — |