WPT
This page compares scores on the Web Platform Tests across web engines, using the latest master runs from wpt.fyi and Blitz's own test runner.
Spec: https://w3c.github.io/editing/execCommand.html ↗
Runs: Chrome 155.0.8038.0 (wpt@b1a7025f8, 2026-09-02) | Firefox 157.0a1 (wpt@b1a7025f8, 2026-09-02) | Safari 251 preview (wpt@5ce815a83, 2026-08-27) | Ladybird 1.0-a7884 (wpt@b1a7025f8, 2026-09-02) | Servo Servo 0.5 (wpt@2ccd2cbf8, 2026-09-01) | Blitz 7727414ca (wpt@a95401e4e, 2026-09-02)
Sort areas: alphabetical | by subtest count
| Area | Chrome | Firefox | Safari | Ladybird | Servo | Blitz |
|---|---|---|---|---|---|---|
| Total | NO DATA | NO DATA | 90.5%87539/96745 | NO DATA | 89.0%86098/96745 | 0.0%0/96745 |
| Test | Chrome | Firefox | Safari | Ladybird | Servo | Blitz |
|---|---|---|---|---|---|---|
| backcolor.html | 991/1026 | 1002/1026 | 984/1026 | 1026/1026 | 1003/1026 | NOT RUN |
| bold.html?1-1000 | 839/1000 | 978/1000 | 838/1000 | 992/1000 | 987/1000 | NOT RUN |
| bold.html?1001-2000 | 848/1000 | 983/1000 | 843/1000 | 994/1000 | 993/1000 | NOT RUN |
| bold.html?2001-3000 | 834/1000 | 958/1000 | 821/1000 | 993/1000 | 977/1000 | NOT RUN |
| bold.html?3001-last | 40/48 | 45/48 | 42/48 | 42/48 | 41/48 | NOT RUN |
| caret-navigation-after-removing-line-break.html | 2/2 | 2/2 | 2/2 | 2/2 | 0/2 | NOT RUN |
| caret-navigation-around-line-break.html | 20/20 | 18/20 | 11/20 | 20/20 | 0/20 | NOT RUN |
| caretnavigation.html | 2/2 | 2/2 | 0/2 | 0/2 | 0/2 | NOT RUN |
| createlink-with-selecting-img.html | 2/3 | 3/3 | 2/3 | 3/3 | 3/3 | NOT RUN |
| createlink.html | 426/441 | 433/441 | 426/441 | 436/441 | 433/441 | NOT RUN |
| delete-list-items-in-table-cell.html | 36/36 | 34/36 | 36/36 | 34/36 | 32/36 | NOT RUN |
| delete-to-make-editing-host-empty.html | 12/12 | 12/12 | 11/12 | 9/12 | 3/12 | NOT RUN |
| delete.html?1-1000 | 989/1000 | 984/1000 | 979/1000 | 989/1000 | 980/1000 | NOT RUN |
| delete.html?1001-2000 | 968/1000 | 972/1000 | 955/1000 | 993/1000 | 966/1000 | NOT RUN |
| delete.html?2001-3000 | 976/1000 | 955/1000 | 976/1000 | 995/1000 | 986/1000 | NOT RUN |
| delete.html?3001-4000 | 973/1000 | 984/1000 | 973/1000 | 991/1000 | 995/1000 | NOT RUN |
| delete.html?4001-5000 | 982/1000 | 977/1000 | 980/1000 | 991/1000 | 994/1000 | NOT RUN |
| delete.html?5001-6000 | 987/1000 | 986/1000 | 981/1000 | 994/1000 | 992/1000 | NOT RUN |
| delete.html?6001-7000 | 971/1000 | 970/1000 | 969/1000 | 968/1000 | 938/1000 | NOT RUN |
| delete.html?7001-last | 816/842 | 809/842 | 808/842 | 806/842 | 753/842 | NOT RUN |
| fontname.html?1-1000 | 977/1000 | 989/1000 | 977/1000 | 999/1000 | 992/1000 | NOT RUN |
| fontname.html?1001-2000 | 936/1000 | 980/1000 | 936/1000 | 987/1000 | 976/1000 | NOT RUN |
| fontname.html?2001-last | 217/225 | 223/225 | 217/225 | 218/225 | 217/225 | NOT RUN |
| fontsize.html?1-1000 | 980/1000 | 892/1000 | 980/1000 | 961/1000 | 980/1000 | NOT RUN |
| fontsize.html?1001-2000 | 958/1000 | 907/1000 | 963/1000 | 941/1000 | 945/1000 | NOT RUN |
| fontsize.html?2001-last | 413/422 | 396/422 | 413/422 | 381/422 | 392/422 | NOT RUN |
| forecolor.html?1-1000 | 985/1000 | 980/1000 | 992/1000 | 990/1000 | 909/1000 | NOT RUN |
| forecolor.html?1001-2000 | 978/1000 | 993/1000 | 978/1000 | 992/1000 | 965/1000 | NOT RUN |
| forecolor.html?2001-last | 319/327 | 322/327 | 321/327 | 314/327 | 292/327 | NOT RUN |
| formatblock.html?1-1000 | 980/1000 | 998/1000 | 980/1000 | 988/1000 | 782/1000 | NOT RUN |
| formatblock.html?1001-2000 | 976/1000 | 991/1000 | 976/1000 | 990/1000 | 780/1000 | NOT RUN |
| formatblock.html?2001-3000 | 983/1000 | 986/1000 | 982/1000 | 946/1000 | 740/1000 | NOT RUN |
| formatblock.html?3001-4000 | 913/1000 | 994/1000 | 913/1000 | 961/1000 | 738/1000 | NOT RUN |
| formatblock.html?4001-5000 | 935/1000 | 960/1000 | 935/1000 | 953/1000 | 718/1000 | NOT RUN |
| formatblock.html?5001-last | 42/46 | 46/46 | 42/46 | 42/46 | 35/46 | NOT RUN |
| forwarddelete.html?1-1000 | 996/1000 | 979/1000 | 993/1000 | 990/1000 | 987/1000 | NOT RUN |
| forwarddelete.html?1001-2000 | 992/1000 | 976/1000 | 988/1000 | 996/1000 | 994/1000 | NOT RUN |
| forwarddelete.html?2001-3000 | 986/1000 | 972/1000 | 986/1000 | 994/1000 | 997/1000 | NOT RUN |
| forwarddelete.html?3001-4000 | 972/1000 | 982/1000 | 972/1000 | 991/1000 | 995/1000 | NOT RUN |
| forwarddelete.html?4001-5000 | 986/1000 | 981/1000 | 984/1000 | 995/1000 | 998/1000 | NOT RUN |
| forwarddelete.html?5001-6000 | 982/1000 | 984/1000 | 979/1000 | 994/1000 | 992/1000 | NOT RUN |
| forwarddelete.html?6001-7000 | 976/1000 | 971/1000 | 971/1000 | 957/1000 | 928/1000 | NOT RUN |
| forwarddelete.html?7001-last | 470/491 | 468/491 | 461/491 | 469/491 | 428/491 | NOT RUN |
| hilitecolor.html | 1022/1218 | 1194/1218 | 1015/1218 | 1213/1218 | 1186/1218 | NOT RUN |
| indent.html | 1258/1329 | 1276/1329 | 1255/1329 | 1321/1329 | 1301/1329 | NOT RUN |
| insert-list-items-in-table-cell.html | 110/112 | 85/112 | 102/112 | 78/112 | 58/112 | NOT RUN |
| inserthorizontalrule.html | 1302/1348 | 1337/1348 | 1302/1348 | 1347/1348 | 1347/1348 | NOT RUN |
| inserthtml.html | 1504/1565 | 1526/1565 | 1498/1565 | 1513/1565 | 1306/1565 | NOT RUN |
| insertimage.html | 945/962 | 952/962 | 943/962 | 959/962 | 942/962 | NOT RUN |
| insertlinebreak.html?1-1000 | 988/1000 | 995/1000 | 976/1000 | 971/1000 | 978/1000 | NOT RUN |
| insertlinebreak.html?1001-last | 677/691 | 674/691 | 676/691 | 687/691 | 650/691 | NOT RUN |
| insertorderedlist.html?1-1000 | 767/1000 | 897/1000 | 746/1000 | 1000/1000 | 746/1000 | NOT RUN |
| insertorderedlist.html?1001-last | 598/761 | 697/761 | 570/761 | 719/761 | 542/761 | NOT RUN |
| insertparagraph.html?1-1000 | 962/1000 | 985/1000 | 953/1000 | 995/1000 | 967/1000 | NOT RUN |
| insertparagraph.html?1001-2000 | 961/1000 | 979/1000 | 961/1000 | 988/1000 | 979/1000 | NOT RUN |
| insertparagraph.html?2001-3000 | 971/1000 | 988/1000 | 971/1000 | 985/1000 | 959/1000 | NOT RUN |
| insertparagraph.html?3001-4000 | 977/1000 | 994/1000 | 971/1000 | 977/1000 | 969/1000 | NOT RUN |
| insertparagraph.html?4001-5000 | 985/1000 | 987/1000 | 978/1000 | 986/1000 | 995/1000 | NOT RUN |
| insertparagraph.html?5001-6000 | 985/1000 | 993/1000 | 953/1000 | 997/1000 | 981/1000 | NOT RUN |
| insertparagraph.html?6001-7000 | 986/1000 | 987/1000 | 982/1000 | 951/1000 | 931/1000 | NOT RUN |
| insertparagraph.html?7001-last | 194/195 | 158/195 | 193/195 | 153/195 | 154/195 | NOT RUN |
| inserttext.html?1-1000 | 991/1000 | 991/1000 | 992/1000 | 998/1000 | 979/1000 | NOT RUN |
| inserttext.html?1001-2000 | 985/1000 | 996/1000 | 984/1000 | 993/1000 | 933/1000 | NOT RUN |
| inserttext.html?2001-last | 989/1009 | 1001/1009 | 982/1009 | 978/1009 | 913/1009 | NOT RUN |
| insertunorderedlist.html?1-1000 | 766/1000 | 909/1000 | 726/1000 | 987/1000 | 738/1000 | NOT RUN |
| insertunorderedlist.html?1001-2000 | 800/1000 | 930/1000 | 797/1000 | 989/1000 | 791/1000 | NOT RUN |
| insertunorderedlist.html?2001-last | 53/65 | 58/65 | 48/65 | 51/65 | 26/65 | NOT RUN |
| italic.html?1-1000 | 840/1000 | 939/1000 | 843/1000 | 997/1000 | 976/1000 | NOT RUN |
| italic.html?1001-2000 | 835/1000 | 980/1000 | 774/1000 | 999/1000 | 958/1000 | NOT RUN |
| italic.html?2001-last | 59/73 | 58/73 | 54/73 | 71/73 | 68/73 | NOT RUN |
| justifycenter.html?1-1000 | 954/1000 | 964/1000 | 874/1000 | 990/1000 | 776/1000 | NOT RUN |
| justifycenter.html?1001-2000 | 933/1000 | 926/1000 | 865/1000 | 986/1000 | 777/1000 | NOT RUN |
| justifycenter.html?2001-3000 | 849/1000 | 865/1000 | 840/1000 | 833/1000 | 722/1000 | NOT RUN |
| justifycenter.html?3001-4000 | 937/1000 | 952/1000 | 844/1000 | 959/1000 | 733/1000 | NOT RUN |
| justifycenter.html?4001-5000 | 912/1000 | 915/1000 | 821/1000 | 926/1000 | 740/1000 | NOT RUN |
| justifycenter.html?5001-6000 | 898/1000 | 882/1000 | 832/1000 | 867/1000 | 733/1000 | NOT RUN |
| justifycenter.html?6001-last | 183/203 | 193/203 | 161/203 | 183/203 | 143/203 | NOT RUN |
| justifyfull.html?1-1000 | 958/1000 | 968/1000 | 875/1000 | 996/1000 | 782/1000 | NOT RUN |
| justifyfull.html?1001-2000 | 932/1000 | 926/1000 | 865/1000 | 986/1000 | 779/1000 | NOT RUN |
| justifyfull.html?2001-3000 | 876/1000 | 861/1000 | 846/1000 | 953/1000 | 737/1000 | NOT RUN |
| justifyfull.html?3001-4000 | 932/1000 | 943/1000 | 835/1000 | 972/1000 | 721/1000 | NOT RUN |
| justifyfull.html?4001-last | 708/762 | 702/762 | 613/762 | 731/762 | 531/762 | NOT RUN |
| justifyleft.html?1-1000 | 931/1000 | 928/1000 | 826/1000 | 945/1000 | 660/1000 | NOT RUN |
| justifyleft.html?1001-2000 | 938/1000 | 940/1000 | 844/1000 | 950/1000 | 687/1000 | NOT RUN |
| justifyleft.html?2001-last | 472/503 | 462/503 | 406/503 | 480/503 | 336/503 | NOT RUN |
| justifyright.html?1-1000 | 958/1000 | 968/1000 | 875/1000 | 996/1000 | 782/1000 | NOT RUN |
| justifyright.html?1001-2000 | 932/1000 | 926/1000 | 865/1000 | 986/1000 | 779/1000 | NOT RUN |
| justifyright.html?2001-3000 | 848/1000 | 861/1000 | 846/1000 | 839/1000 | 737/1000 | NOT RUN |
| justifyright.html?3001-4000 | 932/1000 | 943/1000 | 835/1000 | 951/1000 | 721/1000 | NOT RUN |
| justifyright.html?4001-last | 743/814 | 751/814 | 646/814 | 743/814 | 560/814 | NOT RUN |
| misc.html | 415/423 | 423/423 | 415/423 | 422/423 | 404/423 | NOT RUN |
| multitest.html?1-1000 | 811/1000 | 984/1000 | 792/1000 | 966/1000 | 902/1000 | NOT RUN |
| multitest.html?1001-2000 | 814/1000 | 965/1000 | 779/1000 | 967/1000 | 867/1000 | NOT RUN |
| multitest.html?2001-3000 | 807/1000 | 977/1000 | 787/1000 | 981/1000 | 911/1000 | NOT RUN |
| multitest.html?3001-4000 | 834/1000 | 975/1000 | 800/1000 | 978/1000 | 865/1000 | NOT RUN |
| multitest.html?4001-5000 | 936/1000 | 959/1000 | 908/1000 | 977/1000 | 873/1000 | NOT RUN |
| multitest.html?5001-6000 | 923/1000 | 966/1000 | 897/1000 | 968/1000 | 881/1000 | NOT RUN |
| multitest.html?6001-7000 | 913/1000 | 957/1000 | 877/1000 | 964/1000 | 858/1000 | NOT RUN |
| multitest.html?7001-8000 | 883/1000 | 958/1000 | 865/1000 | 988/1000 | 910/1000 | NOT RUN |
| multitest.html?8001-9000 | 959/1000 | 979/1000 | 953/1000 | 964/1000 | 928/1000 | NOT RUN |
| multitest.html?9001-last | 1042/1092 | 1060/1092 | 1022/1092 | 987/1092 | 943/1092 | NOT RUN |
| outdent.html?1-1000 | 948/1000 | 959/1000 | 948/1000 | 983/1000 | 872/1000 | NOT RUN |
| outdent.html?1001-2000 | 939/1000 | 946/1000 | 927/1000 | 998/1000 | 856/1000 | NOT RUN |
| outdent.html?2001-last | 515/550 | 515/550 | 513/550 | 548/550 | 471/550 | NOT RUN |
| removeformat.html | 1788/1832 | 1825/1832 | 1788/1832 | 1827/1832 | 1831/1832 | NOT RUN |
| strikethrough.html?1-1000 | 833/1000 | 980/1000 | 848/1000 | 961/1000 | 982/1000 | NOT RUN |
| strikethrough.html?1001-2000 | 834/1000 | 971/1000 | 824/1000 | 951/1000 | 974/1000 | NOT RUN |
| strikethrough.html?2001-last | 126/147 | 143/147 | 123/147 | 134/147 | 133/147 | NOT RUN |
| subscript.html | 997/1241 | 1188/1241 | 978/1241 | 1223/1241 | 1205/1241 | NOT RUN |
| superscript.html | 1025/1273 | 1218/1273 | 1006/1273 | 1255/1273 | 1237/1273 | NOT RUN |
| typing-text-in-direct-child-of-editing-host.html?white-space=normal | 4/4 | 4/4 | 4/4 | 4/4 | 0/4 | NOT RUN |
| typing-text-in-direct-child-of-editing-host.html?white-space=pre | 4/4 | 4/4 | 4/4 | 4/4 | 0/4 | NOT RUN |
| typing-text-in-direct-child-of-editing-host.html?white-space=pre-line | 4/4 | 4/4 | 4/4 | 4/4 | 0/4 | NOT RUN |
| typing-text-in-direct-child-of-editing-host.html?white-space=pre-wrap | 4/4 | 4/4 | 4/4 | 4/4 | 0/4 | NOT RUN |
| underline.html?1-1000 | 831/1000 | 976/1000 | 850/1000 | 984/1000 | 990/1000 | NOT RUN |
| underline.html?1001-2000 | 825/1000 | 988/1000 | 825/1000 | 983/1000 | 988/1000 | NOT RUN |
| underline.html?2001-last | 124/147 | 142/147 | 117/147 | 136/147 | 136/147 | NOT RUN |
| undo-redo-after-mutation.html | 5/7 | 7/7 | 5/7 | 2/7 | 0/7 | NOT RUN |
| undo-redo.html | 69/69 | 69/69 | 69/69 | 69/69 | 35/69 | NOT RUN |
| unlink.html | 372/395 | 379/395 | 372/395 | 387/395 | 381/395 | NOT RUN |