Dataset 20261011-0550-f160c57 · measured 2026-10-11 05:50 UTC

Flexbox

1,004 tests judged in this suite · 36 not judged.

97.4%4,692 of 4,816 subtests

Coverage — 83.2%: of the 5,787 subtests wpt.fyi runs in this directory we judge 4,816. The rest we do not run at all, so no figure above speaks for them.

By tests — the unit Interop counts — 98.8%: 992 of 1,004. A file is one test and passes only when every subtest in it passes, so this figure is the stricter of the two.

992Passingrendered pixel-identical to the reference, within the test's own fuzz allowance

12Failingevery one of them listed below, with the evidence

36Not judgedneeds JavaScript, interaction or a draft feature — a PDF engine has none

Every test in this suite

All 1,040 of them, grouped by the directory the corpus keeps them in — passes included. Open a directory to see what each test checks; open a test to see our render, the reference, the pixels that differ, and the source of both files.

1,040 tests in 9 directories

These are web-platform-tests files, unchanged. How the browsers score on the same suite · the suite upstream

Judged by assertions

216 files in this suite state what they expect in the markup or as a parser assertion rather than as a second rendering. Each one counts as its subtests in the figures above.

File	Subtests	Verdict
flex-container-max-content-002.tentative.html	82/96	14 fail
flex-container-min-content-002.tentative.html	82/96	14 fail
alignment/flex-align-baseline-line-clamp-002.tentative.html	12/24	12 fail
height-percentage-with-dynamic-container-size.html	0/9	9 fail
alignment/flex-align-baseline-line-clamp-001.tentative.html	21/26	5 fail
balance/flex-wrap-computed.html	3/8	5 fail
balance/flex-wrap-valid.html	3/8	5 fail
alignment/flex-align-baseline-line-clamp-003.tentative.html	20/24	4 fail
flex-one-sets-flex-basis-to-zero-px.html	14/18	4 fail
balance/flex-line-count-computed.html	0/4	4 fail
balance/balance-negative-margin-002.html	0/3	3 fail
parsing/flex-computed.html	12/14	2 fail
flex-basis-intrinsics-001.html	10/12	2 fail
intrinsic-size/row-005.html	7/9	2 fail
percentage-heights-003.html	7/9	2 fail
alignment/flex-align-baseline-table-001.html	6/8	2 fail
flexbox-justify-content-wmvert-002.html	2/4	2 fail
flexbox-justify-content-wmvert-003.html	2/4	2 fail
align-items-baseline-column-vert-rl-table-item.html	0/2	2 fail
balance/flex-line-count-valid.html	0/2	2 fail
shrinking-column-flexbox.html	0/2	2 fail
image-as-flexitem-size-002.html	35/36	1 fail
image-as-flexitem-size-002v.html	35/36	1 fail
percentage-size-quirks.html	19/20	1 fail
percentage-size.html	19/20	1 fail
alignment/flex-align-baseline-grid-001.html	11/12	1 fail
alignment/flex-align-baseline-grid-002.html	11/12	1 fail
alignment/flex-align-baseline-grid-003.html	11/12	1 fail
parsing/flex-basis-computed.html	11/12	1 fail
flex-basis-014.html	9/10	1 fail
intrinsic-size/row-compat-001.html	5/6	1 fail
flex-minimum-size-002.html	2/3	1 fail
align-items-baseline-column-vert-lr-table-item.html	1/2	1 fail
fieldset-as-container-justify-center.tentative.html	0/1	1 fail
alignment/multiline-align-self.html	2784/2784	all pass
align-content-wrap-003.html	404/404	all pass
align-content-horiz-001a.html	288/288	all pass
align-content-horiz-001b.html	288/288	all pass
align-content-horiz-002.html	288/288	all pass
align-content-vert-001a.html	288/288	all pass
align-content-vert-001b.html	288/288	all pass
align-content-vert-002.html	288/288	all pass
align-content-wmvert-001.html	288/288	all pass
multiline-min-max.html	168/168	all pass
inline-flexbox-wrap-vertically-width-calculation.html	160/160	all pass
flex-flow-013.html	88/88	all pass
abspos/flex-abspos-staticpos-align-self-vertWM-001.html	56/56	all pass
abspos/flex-abspos-staticpos-align-self-vertWM-002.html	56/56	all pass
percentage-heights-000.html	54/54	all pass
abspos/flex-abspos-staticpos-align-content-001.html	48/48	all pass
abspos/flex-abspos-staticpos-align-self-001.html	48/48	all pass
abspos/flex-abspos-staticpos-align-self-002.html	48/48	all pass
abspos/flex-abspos-staticpos-align-self-003.html	48/48	all pass
abspos/flex-abspos-staticpos-align-self-004.html	48/48	all pass
abspos/flex-abspos-staticpos-align-self-005.html	48/48	all pass
abspos/flex-abspos-staticpos-align-self-006.html	48/48	all pass
abspos/flex-abspos-staticpos-align-self-007.html	48/48	all pass
abspos/flex-abspos-staticpos-align-self-008.html	48/48	all pass
abspos/flex-abspos-staticpos-align-self-rtl-001.html	48/48	all pass
abspos/flex-abspos-staticpos-align-self-rtl-002.html	48/48	all pass
abspos/flex-abspos-staticpos-align-self-rtl-003.html	48/48	all pass
abspos/flex-abspos-staticpos-align-self-rtl-004.html	48/48	all pass
abspos/flex-abspos-staticpos-align-self-vertWM-003.html	48/48	all pass
abspos/flex-abspos-staticpos-align-self-vertWM-004.html	48/48	all pass
abspos/flex-abspos-staticpos-justify-content-001.html	48/48	all pass
abspos/flex-abspos-staticpos-justify-content-002.html	48/48	all pass
abspos/flex-abspos-staticpos-justify-content-003.html	48/48	all pass
abspos/flex-abspos-staticpos-justify-content-004.html	48/48	all pass
abspos/flex-abspos-staticpos-justify-content-005.html	48/48	all pass
abspos/flex-abspos-staticpos-justify-content-006.html	48/48	all pass
abspos/flex-abspos-staticpos-justify-content-007.html	48/48	all pass
abspos/flex-abspos-staticpos-justify-content-008.html	48/48	all pass
abspos/flex-abspos-staticpos-justify-content-rtl-001.html	48/48	all pass
abspos/flex-abspos-staticpos-justify-content-rtl-002.html	48/48	all pass
abspos/flex-abspos-staticpos-justify-content-vertWM-001.html	48/48	all pass
abspos/flex-abspos-staticpos-justify-content-vertWM-002.html	48/48	all pass
alignment/flex-align-baseline-flex-001.html	48/48	all pass
alignment/flex-align-baseline-flex-002.html	48/48	all pass
percentage-heights-001.html	48/48	all pass
flex-factor-less-than-one.html	42/42	all pass
image-as-flexitem-size-001.html	36/36	all pass
image-as-flexitem-size-001v.html	36/36	all pass
image-as-flexitem-size-003.html	36/36	all pass
image-as-flexitem-size-003v.html	36/36	all pass
image-as-flexitem-size-004.html	36/36	all pass
image-as-flexitem-size-004v.html	36/36	all pass
image-as-flexitem-size-005.html	36/36	all pass
image-as-flexitem-size-005v.html	36/36	all pass
image-as-flexitem-size-006.html	36/36	all pass
image-as-flexitem-size-006v.html	36/36	all pass
image-as-flexitem-size-007.html	36/36	all pass
image-as-flexitem-size-007v.html	36/36	all pass
text-as-flexitem-size-001.html	36/36	all pass
abspos/position-absolute-003.html	32/32	all pass
align-self-baseline-with-flex-wrap.html	32/32	all pass
flex-item-contains-strict.html	32/32	all pass
flexbox-ignores-first-letter.html	26/26	all pass
flex-aspect-ratio-img-column-011.html	25/25	all pass
flexbox_justifycontent-rtl-001.html	24/24	all pass
flexbox_justifycontent-rtl-002.html	24/24	all pass
align-content-wrap-002.html	22/22	all pass
flex-minimum-size-001.html	18/18	all pass
align-content-wrap-005.html	16/16	all pass
alignment/flex-align-baseline-flex-003.html	16/16	all pass
alignment/flex-align-baseline-flex-004.html	16/16	all pass
parsing/flex-valid.html	16/16	all pass
flex-item-compressible-001.html	15/15	all pass
flex-item-compressible-002.html	15/15	all pass
inline-flex.html	14/14	all pass
align-content-wrap-001.html	13/13	all pass
balance/flex-wrap-invalid.html	13/13	all pass
alignment/flex-align-baseline-multicol-001.html	12/12	all pass
alignment/flex-align-baseline-multicol-002.html	12/12	all pass
alignment/flex-align-baseline-multicol-003.html	12/12	all pass
alignment/flex-align-baseline-overflow-001.html	12/12	all pass
alignment/flex-align-baseline-overflow-002.html	12/12	all pass
alignment/flex-align-baseline-overflow-003.html	12/12	all pass
percentage-margins-001.html	12/12	all pass
table-with-percent-intrinsic-width.html	12/12	all pass
flex-aspect-ratio-img-row-013.html	10/10	all pass
orthogonal-writing-modes-and-intrinsic-sizing.html	10/10	all pass
columns-height-set-via-top-bottom.html	9/9	all pass
column-flex-child-with-overflow-scroll.html	8/8	all pass
flex-aspect-ratio-img-row-005.html	8/8	all pass
flex-item-percentage-height-img-001.html	8/8	all pass
flex-minimum-height-flex-items-025.html	8/8	all pass
flex-minimum-size-single-axis-scroll-container.html	8/8	all pass
flexitem-no-margin-collapsing.html	8/8	all pass
parsing/flex-basis-valid.html	8/8	all pass
parsing/flex-basis-invalid.html	7/7	all pass
parsing/flex-flow-valid.html	7/7	all pass
alignment/flex-align-baseline-001.html	6/6	all pass
alignment/flex-align-baseline-002.html	6/6	all pass
alignment/flex-align-baseline-003.html	6/6	all pass
alignment/flex-align-baseline-004.html	6/6	all pass
flex-shorthand-flex-basis-middle.html	6/6	all pass
flexbox_justifycontent-center-overflow.html	6/6	all pass
flexitem-stretch-image.html	6/6	all pass
parsing/flex-invalid.html	6/6	all pass
align-items-baseline-column-horz.html	5/5	all pass
align-items-baseline-row-vert.html	5/5	all pass
balance/flex-line-count-invalid.html	5/5	all pass
flex-minimum-width-flex-items-014.html	5/5	all pass
intrinsic-size/col-wrap-019.html	5/5	all pass
intrinsic-size/row-wrap-001.html	5/5	all pass
multiline-min-preferred-width.html	5/5	all pass
alignment/flex-align-baseline-fieldset-001.html	4/4	all pass
alignment/flex-align-baseline-fieldset-002.html	4/4	all pass
alignment/flex-align-baseline-fieldset-003.html	4/4	all pass
alignment/flex-align-baseline-table-002.html	4/4	all pass
alignment/flex-align-baseline-table-003.html	4/4	all pass
box-sizing-min-max-sizes-001.html	4/4	all pass
column-reverse-gap.html	4/4	all pass
intrinsic-width-orthogonal-writing-mode.html	4/4	all pass
max-width-violation.html	4/4	all pass
parsing/flex-direction-computed.html	4/4	all pass
parsing/flex-direction-valid.html	4/4	all pass
parsing/flex-grow-computed.html	4/4	all pass
parsing/flex-grow-invalid.html	4/4	all pass
parsing/flex-grow-valid.html	4/4	all pass
parsing/flex-shrink-computed.html	4/4	all pass
parsing/flex-shrink-invalid.html	4/4	all pass
parsing/flex-shrink-valid.html	4/4	all pass
percentage-heights-013.html	4/4	all pass
align-items-baseline-column-vert.html	3/3	all pass
align-items-baseline-row-horz.html	3/3	all pass
alignment/flex-align-baseline-005.html	3/3	all pass
alignment/flex-align-baseline-006.html	3/3	all pass
alignment/flex-align-baseline-007.html	3/3	all pass
intrinsic-size/col-wrap-004.html	3/3	all pass
intrinsic-size/col-wrap-005.html	3/3	all pass
intrinsic-size/col-wrap-018.html	3/3	all pass
overflow-auto-004.html	3/3	all pass
parsing/flex-wrap-computed.html	3/3	all pass
parsing/flex-wrap-valid.html	3/3	all pass
parsing/order-computed.html	3/3	all pass
parsing/order-invalid.html	3/3	all pass
parsing/order-valid.html	3/3	all pass
quirks-auto-block-size-with-percentage-item.html	3/3	all pass
align-items-baseline-column-vert-lr-flexbox-item.html	2/2	all pass
align-items-baseline-column-vert-lr-grid-item.html	2/2	all pass
align-items-baseline-column-vert-lr-items.html	2/2	all pass
align-items-baseline-column-vert-rl-flexbox-item.html	2/2	all pass
align-items-baseline-column-vert-rl-grid-item.html	2/2	all pass
align-items-baseline-column-vert-rl-items.html	2/2	all pass
align-items-baseline-vert-lr-column-horz-flexbox-item.html	2/2	all pass
align-items-baseline-vert-lr-column-horz-grid-item.html	2/2	all pass
align-items-baseline-vert-lr-column-horz-items.html	2/2	all pass
align-items-baseline-vert-rl-column-horz-flexbox-item.html	2/2	all pass
align-items-baseline-vert-rl-column-horz-grid-item.html	2/2	all pass
align-items-baseline-vert-rl-column-horz-items.html	2/2	all pass
align-self-014.html	2/2	all pass
flex-minimum-height-flex-items-012.html	2/2	all pass
flex-minimum-size-003.html	2/2	all pass
flexbox-lines-must-be-stretched-by-default.html	2/2	all pass
intrinsic-size/col-wrap-010.html	2/2	all pass
parsing/flex-direction-invalid.html	2/2	all pass
parsing/flex-flow-invalid.html	2/2	all pass
parsing/flex-wrap-invalid.html	2/2	all pass
percentage-max-width-cross-axis.html	2/2	all pass
percentage-size-quirks-002.html	2/2	all pass
total-min-max-violation-zero.html	2/2	all pass
abspos/position-absolute-015.html	1/1	all pass
align-items-baseline-vert-lr-column-horz-table-item.html	1/1	all pass
align-items-baseline-vert-rl-column-horz-table-item.html	1/1	all pass
flex-aspect-ratio-img-column-017.html	1/1	all pass
flex-basis-009.html	1/1	all pass
gap-017.html	1/1	all pass
gap-018.html	1/1	all pass
justify-content_space-between-002.html	1/1	all pass
justify-content-006.html	1/1	all pass
justify-content-007.html	1/1	all pass
overflow-auto-002.html	1/1	all pass
percentage-padding-001.html	1/1	all pass
position-relative-percentage-top-001.html	1/1	all pass
table-as-item-cross-size.html	1/1	all pass

Dataset 20261011-0550-f160c57 · measured 2026-10-11 05:50 UTC

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