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.

wpt / html / syntax / parsing

Spec: HTML ↗

Runs: Chrome 155.0.8039.0 (wpt@a4fcd77aa, 2026-09-03) | Firefox 157.0a1 (wpt@cc4d45aa0, 2026-09-03) | Safari 251 preview (wpt@5ce815a83, 2026-08-27) | Ladybird 1.0-a9df8 (wpt@47d833bbc, 2026-09-03) | Servo Servo 0.6 (wpt@09159dcb3, 2026-09-02) | Blitz 188486089 (wpt@a95401e4e, 2026-09-02)

Sort areas: alphabetical | by subtest count

Area	Chrome	Firefox	Safari	Ladybird	Servo	Blitz
Total	99.6%8038/8067	NO DATA	96.4%7778/8067	NO DATA	96.3%7772/8067	0.0%0/8067
crashtests	100.0%7/7	NO DATA	85.7%6/7	NO DATA	100.0%7/7	0.0%0/7
template	100.0%329/329	NO DATA	100.0%329/329	NO DATA	100.0%329/329	0.0%0/329

Test	Chrome	Firefox	Safari	Ladybird	Servo	Blitz
DOMContentLoaded-defer.html	FAIL	PASS	FAIL	FAIL	FAIL	NOT RUN
Document.getElementsByTagName-foreign-01.html	37/37	37/37	37/37	37/37	37/37	NOT RUN
Document.getElementsByTagName-foreign-02.html	2/2	2/2	2/2	2/2	2/2	NOT RUN
Element.getElementsByTagName-foreign-01.html	2/2	2/2	2/2	2/2	2/2	NOT RUN
Element.getElementsByTagName-foreign-02.html	2/2	2/2	2/2	2/2	2/2	NOT RUN
adoption-agency-reparenting-cycle.html	PASS	PASS	PASS	ERROR	PASS	NOT RUN
adoption-agency-reparenting-document-target.html	PASS	FAIL	FAIL	FAIL	PASS	NOT RUN
adoption-agency-reparenting-inner-loop-cycle.html	PASS	PASS	PASS	ERROR	PASS	NOT RUN
adoption-agency-reparenting-pagehide.tentative.html	PASS	PASS	PASS	FAIL	FAIL	NOT RUN
adoption-agency-reparenting-shadow-cycle.html	PASS	CRASH	ERROR	ERROR	PASS	NOT RUN
adoption-agency-reparenting-template-cycle.html	PASS	FAIL	FAIL	ERROR	PASS	NOT RUN
adoption-agency-reparenting.html	5/5	5/5	5/5	5/5	5/5	NOT RUN
adoption_agency_check_the_end_tag_name.html	PASS	PASS	PASS	PASS	PASS	NOT RUN
ambiguous-ampersand.html	3/3	3/3	3/3	3/3	3/3	NOT RUN
cdata-in-integration-point-fragment.html	2/10	10/10	10/10	10/10	10/10	NOT RUN
custom-element-reparenting-shadow-cycle.html	PASS	CRASH	ERROR	ERROR	PASS	NOT RUN
custom-element-reparenting-template-cycle.html	PASS	FAIL	FAIL	FAIL	PASS	NOT RUN
custom-element-reparenting.html	3/4	3/4	4/4	3/4	3/4	NOT RUN
doctype-system-identifier-distinction.html	6/6	4/6	6/6	4/6	4/6	NOT RUN
empty-doctype-ids.html	PASS	PASS	PASS	PASS	PASS	NOT RUN
foster-parenting-into-document-with-element-child.html	PASS	FAIL	FAIL	FAIL	PASS	NOT RUN
foster-parenting-into-template-element.html	PASS	FAIL	PASS	FAIL	FAIL	NOT RUN
foster-parenting-moved-table.window.html	6/6	3/6	NOT RUN	5/6	5/6	NOT RUN
html-integration-point.html	5/5	5/5	5/5	5/5	5/5	NOT RUN
html5lib_url.html?file=adoption01	18/18	18/18	18/18	18/18	18/18	NOT RUN
html5lib_url.html?file=adoption02	3/4	3/4	3/4	4/4	3/4	NOT RUN
html5lib_url.html?file=blocks	48/48	48/48	48/48	48/48	48/48	NOT RUN
html5lib_url.html?file=comments01	16/16	16/16	16/16	16/16	16/16	NOT RUN
html5lib_url.html?file=doctype01	37/37	37/37	37/37	37/37	37/37	NOT RUN
html5lib_url.html?file=domjs-unsafe	49/49	49/49	49/49	49/49	49/49	NOT RUN
html5lib_url.html?file=entities01	75/75	75/75	75/75	75/75	75/75	NOT RUN
html5lib_url.html?file=entities02	26/26	26/26	26/26	26/26	26/26	NOT RUN
html5lib_url.html?file=foreign-fragment	66/66	66/66	66/66	66/66	66/66	NOT RUN
html5lib_url.html?file=html5test-com	27/30	29/30	29/30	29/30	29/30	NOT RUN
html5lib_url.html?file=inbody01	4/4	4/4	4/4	4/4	4/4	NOT RUN
html5lib_url.html?file=isindex	4/4	4/4	4/4	4/4	4/4	NOT RUN
html5lib_url.html?file=main-element	3/3	3/3	3/3	3/3	3/3	NOT RUN
html5lib_url.html?file=math	8/8	8/8	8/8	8/8	8/8	NOT RUN
html5lib_url.html?file=menuitem-element	20/20	20/20	20/20	20/20	20/20	NOT RUN
html5lib_url.html?file=namespace-sensitivity	PASS	PASS	PASS	PASS	PASS	NOT RUN
html5lib_url.html?file=pending-spec-changes	3/3	3/3	3/3	3/3	3/3	NOT RUN
html5lib_url.html?file=pending-spec-changes-plain-text-unsafe	PASS	PASS	PASS	PASS	PASS	NOT RUN
html5lib_url.html?file=plain-text-unsafe	39/41	41/41	39/41	41/41	41/41	NOT RUN
html5lib_url.html?file=processing-instructions	123/123	40/123	40/123	32/123	40/123	NOT RUN
html5lib_url.html?file=quirks01	4/4	4/4	4/4	4/4	4/4	NOT RUN
html5lib_url.html?file=ruby	21/21	21/21	21/21	21/21	21/21	NOT RUN
html5lib_url.html?file=scriptdata01	26/26	26/26	26/26	26/26	26/26	NOT RUN
html5lib_url.html?file=scripted_adoption01	PASS	PASS	PASS	PASS	PASS	NOT RUN
html5lib_url.html?file=scripted_ark	PASS	PASS	PASS	PASS	PASS	NOT RUN
html5lib_url.html?file=scripted_foster01	2/2	2/2	0/2	0/2	0/2	NOT RUN
html5lib_url.html?file=scripted_webkit01	2/2	2/2	2/2	2/2	2/2	NOT RUN
html5lib_url.html?file=search-element	3/3	3/3	3/3	3/3	3/3	NOT RUN
html5lib_url.html?file=svg	8/8	8/8	8/8	8/8	8/8	NOT RUN
html5lib_url.html?file=tables01	19/19	19/19	19/19	19/19	19/19	NOT RUN
html5lib_url.html?file=template	113/113	113/113	113/113	113/113	113/113	NOT RUN
html5lib_url.html?file=tests1	112/112	109/112	109/112	109/112	109/112	NOT RUN
html5lib_url.html?file=tests10	54/54	54/54	54/54	54/54	54/54	NOT RUN
html5lib_url.html?file=tests11	13/13	13/13	13/13	13/13	13/13	NOT RUN
html5lib_url.html?file=tests12	2/2	2/2	2/2	2/2	2/2	NOT RUN
html5lib_url.html?file=tests14	7/7	7/7	7/7	7/7	7/7	NOT RUN
html5lib_url.html?file=tests15	14/14	14/14	14/14	14/14	14/14	NOT RUN
html5lib_url.html?file=tests16	191/191	191/191	191/191	191/191	191/191	NOT RUN
html5lib_url.html?file=tests17	13/13	13/13	13/13	13/13	13/13	NOT RUN
html5lib_url.html?file=tests18	35/35	35/35	35/35	35/35	35/35	NOT RUN
html5lib_url.html?file=tests19	103/103	103/103	103/103	103/103	103/103	NOT RUN
html5lib_url.html?file=tests2	63/63	63/63	63/63	63/63	63/63	NOT RUN
html5lib_url.html?file=tests20	64/64	64/64	64/64	64/64	64/64	NOT RUN
html5lib_url.html?file=tests21	23/23	23/23	23/23	23/23	23/23	NOT RUN
html5lib_url.html?file=tests22	5/5	5/5	5/5	5/5	5/5	NOT RUN
html5lib_url.html?file=tests23	5/5	5/5	5/5	5/5	5/5	NOT RUN
html5lib_url.html?file=tests24	8/8	8/8	8/8	8/8	8/8	NOT RUN
html5lib_url.html?file=tests25	26/26	26/26	26/26	26/26	26/26	NOT RUN
html5lib_url.html?file=tests26	20/20	20/20	20/20	20/20	20/20	NOT RUN
html5lib_url.html?file=tests3	24/24	24/24	24/24	24/24	24/24	NOT RUN
html5lib_url.html?file=tests4	9/9	9/9	9/9	9/9	9/9	NOT RUN
html5lib_url.html?file=tests5	16/16	16/16	16/16	16/16	16/16	NOT RUN
html5lib_url.html?file=tests6	52/52	52/52	52/52	52/52	52/52	NOT RUN
html5lib_url.html?file=tests7	33/34	34/34	34/34	34/34	34/34	NOT RUN
html5lib_url.html?file=tests8	10/10	10/10	10/10	10/10	10/10	NOT RUN
html5lib_url.html?file=tests9	27/27	27/27	27/27	27/27	27/27	NOT RUN
html5lib_url.html?file=tests_innerHTML_1	80/81	81/81	81/81	81/81	80/81	NOT RUN
html5lib_url.html?file=tricky01	9/9	9/9	9/9	9/9	9/9	NOT RUN
html5lib_url.html?file=void-in-phrasing	13/13	13/13	13/13	13/13	13/13	NOT RUN
html5lib_url.html?file=webkit01	52/52	52/52	52/52	52/52	52/52	NOT RUN
html5lib_url.html?file=webkit02	47/48	44/48	48/48	48/48	44/48	NOT RUN
html5lib_write.html?file=adoption01	17/17	17/17	17/17	17/17	17/17	NOT RUN
html5lib_write.html?file=adoption02	3/4	3/4	3/4	4/4	3/4	NOT RUN
html5lib_write.html?file=blocks	48/48	48/48	48/48	48/48	48/48	NOT RUN
html5lib_write.html?file=comments01	16/16	16/16	16/16	16/16	16/16	NOT RUN
html5lib_write.html?file=doctype01	37/37	37/37	37/37	37/37	37/37	NOT RUN
html5lib_write.html?file=domjs-unsafe	49/49	49/49	49/49	49/49	49/49	NOT RUN
html5lib_write.html?file=entities01	75/75	75/75	75/75	75/75	75/75	NOT RUN
html5lib_write.html?file=entities02	26/26	26/26	26/26	26/26	26/26	NOT RUN
html5lib_write.html?file=html5test-com	27/30	29/30	29/30	29/30	29/30	NOT RUN
html5lib_write.html?file=inbody01	4/4	4/4	4/4	4/4	4/4	NOT RUN
html5lib_write.html?file=isindex	4/4	4/4	4/4	4/4	4/4	NOT RUN
html5lib_write.html?file=main-element	3/3	3/3	3/3	3/3	3/3	NOT RUN
html5lib_write.html?file=menuitem-element	20/20	20/20	20/20	20/20	20/20	NOT RUN
html5lib_write.html?file=namespace-sensitivity	PASS	PASS	PASS	PASS	PASS	NOT RUN
html5lib_write.html?file=pending-spec-changes	3/3	3/3	3/3	3/3	3/3	NOT RUN
html5lib_write.html?file=pending-spec-changes-plain-text-unsafe	PASS	PASS	PASS	PASS	PASS	NOT RUN
html5lib_write.html?file=plain-text-unsafe	37/37	37/37	37/37	37/37	37/37	NOT RUN
html5lib_write.html?file=processing-instructions	123/123	40/123	40/123	40/123	40/123	NOT RUN
html5lib_write.html?file=quirks01	4/4	4/4	4/4	4/4	4/4	NOT RUN
html5lib_write.html?file=ruby	21/21	21/21	21/21	21/21	21/21	NOT RUN
html5lib_write.html?file=scriptdata01	26/26	26/26	26/26	26/26	26/26	NOT RUN
html5lib_write.html?file=scripted_adoption01	PASS	PASS	PASS	PASS	PASS	NOT RUN
html5lib_write.html?file=scripted_ark	PASS	PASS	PASS	PASS	PASS	NOT RUN
html5lib_write.html?file=scripted_foster01	2/2	2/2	0/2	0/2	0/2	NOT RUN
html5lib_write.html?file=scripted_webkit01	2/2	2/2	2/2	2/2	2/2	NOT RUN
html5lib_write.html?file=search-element	3/3	3/3	3/3	3/3	3/3	NOT RUN
html5lib_write.html?file=tables01	19/19	19/19	19/19	19/19	19/19	NOT RUN
html5lib_write.html?file=template	112/112	112/112	112/112	112/112	112/112	NOT RUN
html5lib_write.html?file=tests1	112/112	109/112	109/112	109/112	109/112	NOT RUN
html5lib_write.html?file=tests10	54/54	54/54	54/54	54/54	54/54	NOT RUN
html5lib_write.html?file=tests11	13/13	13/13	13/13	13/13	13/13	NOT RUN
html5lib_write.html?file=tests12	2/2	2/2	2/2	2/2	2/2	NOT RUN
html5lib_write.html?file=tests14	7/7	7/7	7/7	7/7	7/7	NOT RUN
html5lib_write.html?file=tests15	14/14	14/14	14/14	14/14	14/14	NOT RUN
html5lib_write.html?file=tests16	191/191	191/191	191/191	191/191	191/191	NOT RUN
html5lib_write.html?file=tests17	13/13	13/13	13/13	13/13	13/13	NOT RUN
html5lib_write.html?file=tests18	35/35	35/35	35/35	35/35	35/35	NOT RUN
html5lib_write.html?file=tests19	103/103	103/103	103/103	103/103	103/103	NOT RUN
html5lib_write.html?file=tests2	63/63	63/63	63/63	63/63	63/63	NOT RUN
html5lib_write.html?file=tests20	64/64	64/64	64/64	64/64	64/64	NOT RUN
html5lib_write.html?file=tests21	23/23	23/23	23/23	23/23	23/23	NOT RUN
html5lib_write.html?file=tests22	5/5	5/5	5/5	5/5	5/5	NOT RUN
html5lib_write.html?file=tests23	5/5	5/5	5/5	5/5	5/5	NOT RUN
html5lib_write.html?file=tests24	8/8	8/8	8/8	8/8	8/8	NOT RUN
html5lib_write.html?file=tests25	26/26	26/26	26/26	26/26	26/26	NOT RUN
html5lib_write.html?file=tests26	20/20	20/20	20/20	20/20	20/20	NOT RUN
html5lib_write.html?file=tests3	24/24	24/24	24/24	24/24	24/24	NOT RUN
html5lib_write.html?file=tests5	16/16	16/16	16/16	16/16	16/16	NOT RUN
html5lib_write.html?file=tests6	39/39	39/39	39/39	39/39	39/39	NOT RUN
html5lib_write.html?file=tests7	32/33	33/33	33/33	33/33	33/33	NOT RUN
html5lib_write.html?file=tests8	10/10	10/10	10/10	10/10	10/10	NOT RUN
html5lib_write.html?file=tests9	27/27	27/27	27/27	27/27	27/27	NOT RUN
html5lib_write.html?file=tricky01	9/9	9/9	9/9	9/9	9/9	NOT RUN
html5lib_write.html?file=void-in-phrasing	13/13	13/13	13/13	13/13	13/13	NOT RUN
html5lib_write.html?file=webkit01	52/52	52/52	52/52	52/52	52/52	NOT RUN
html5lib_write.html?file=webkit02	43/44	40/44	44/44	44/44	40/44	NOT RUN
html5lib_write_single.html?file=adoption01	17/17	17/17	17/17	17/17	17/17	NOT RUN
html5lib_write_single.html?file=adoption02	3/4	3/4	3/4	4/4	3/4	NOT RUN
html5lib_write_single.html?file=blocks	48/48	48/48	48/48	48/48	48/48	NOT RUN
html5lib_write_single.html?file=comments01	16/16	16/16	16/16	16/16	16/16	NOT RUN
html5lib_write_single.html?file=doctype01	37/37	37/37	37/37	37/37	37/37	NOT RUN
html5lib_write_single.html?file=domjs-unsafe	49/49	49/49	49/49	49/49	49/49	NOT RUN
html5lib_write_single.html?file=entities01	75/75	75/75	75/75	75/75	75/75	NOT RUN
html5lib_write_single.html?file=entities02	26/26	26/26	26/26	26/26	26/26	NOT RUN
html5lib_write_single.html?file=html5test-com	27/30	29/30	29/30	29/30	29/30	NOT RUN
html5lib_write_single.html?file=inbody01	4/4	4/4	4/4	4/4	4/4	NOT RUN
html5lib_write_single.html?file=isindex	4/4	4/4	4/4	4/4	4/4	NOT RUN
html5lib_write_single.html?file=main-element	3/3	3/3	3/3	3/3	3/3	NOT RUN
html5lib_write_single.html?file=menuitem-element	20/20	20/20	20/20	20/20	20/20	NOT RUN
html5lib_write_single.html?file=namespace-sensitivity	PASS	PASS	PASS	PASS	PASS	NOT RUN
html5lib_write_single.html?file=pending-spec-changes	3/3	3/3	3/3	3/3	3/3	NOT RUN
html5lib_write_single.html?file=pending-spec-changes-plain-text-unsafe	PASS	PASS	PASS	PASS	PASS	NOT RUN
html5lib_write_single.html?file=plain-text-unsafe	37/37	37/37	37/37	37/37	37/37	NOT RUN
html5lib_write_single.html?file=processing-instructions	123/123	40/123	40/123	40/123	40/123	NOT RUN
html5lib_write_single.html?file=quirks01	4/4	4/4	4/4	4/4	4/4	NOT RUN
html5lib_write_single.html?file=ruby	21/21	21/21	21/21	21/21	21/21	NOT RUN
html5lib_write_single.html?file=scriptdata01	26/26	26/26	26/26	26/26	26/26	NOT RUN
html5lib_write_single.html?file=scripted_adoption01	PASS	PASS	PASS	PASS	PASS	NOT RUN
html5lib_write_single.html?file=scripted_ark	PASS	PASS	PASS	PASS	PASS	NOT RUN
html5lib_write_single.html?file=scripted_foster01	2/2	2/2	0/2	0/2	0/2	NOT RUN
html5lib_write_single.html?file=scripted_webkit01	2/2	2/2	2/2	2/2	2/2	NOT RUN
html5lib_write_single.html?file=search-element	3/3	3/3	3/3	3/3	3/3	NOT RUN
html5lib_write_single.html?file=tables01	19/19	19/19	19/19	19/19	19/19	NOT RUN
html5lib_write_single.html?file=template	112/112	112/112	112/112	112/112	112/112	NOT RUN
html5lib_write_single.html?file=tests1	112/112	109/112	109/112	109/112	109/112	NOT RUN
html5lib_write_single.html?file=tests10	54/54	54/54	54/54	54/54	54/54	NOT RUN
html5lib_write_single.html?file=tests11	13/13	13/13	13/13	13/13	13/13	NOT RUN
html5lib_write_single.html?file=tests12	2/2	2/2	2/2	2/2	2/2	NOT RUN
html5lib_write_single.html?file=tests14	7/7	7/7	7/7	7/7	7/7	NOT RUN
html5lib_write_single.html?file=tests15	14/14	10/14	14/14	14/14	14/14	NOT RUN
html5lib_write_single.html?file=tests16	191/191	191/191	191/191	191/191	191/191	NOT RUN
html5lib_write_single.html?file=tests17	13/13	13/13	13/13	13/13	13/13	NOT RUN
html5lib_write_single.html?file=tests18	35/35	35/35	35/35	35/35	35/35	NOT RUN
html5lib_write_single.html?file=tests19	103/103	102/103	103/103	103/103	103/103	NOT RUN
html5lib_write_single.html?file=tests2	63/63	63/63	63/63	63/63	63/63	NOT RUN
html5lib_write_single.html?file=tests20	64/64	64/64	64/64	64/64	64/64	NOT RUN
html5lib_write_single.html?file=tests21	23/23	23/23	23/23	23/23	23/23	NOT RUN
html5lib_write_single.html?file=tests22	5/5	5/5	5/5	5/5	5/5	NOT RUN
html5lib_write_single.html?file=tests23	5/5	5/5	5/5	5/5	5/5	NOT RUN
html5lib_write_single.html?file=tests24	8/8	8/8	8/8	8/8	8/8	NOT RUN
html5lib_write_single.html?file=tests25	26/26	26/26	26/26	26/26	26/26	NOT RUN
html5lib_write_single.html?file=tests26	20/20	20/20	20/20	20/20	20/20	NOT RUN
html5lib_write_single.html?file=tests3	24/24	24/24	24/24	24/24	24/24	NOT RUN
html5lib_write_single.html?file=tests5	16/16	16/16	16/16	16/16	16/16	NOT RUN
html5lib_write_single.html?file=tests6	39/39	39/39	39/39	39/39	39/39	NOT RUN
html5lib_write_single.html?file=tests7	32/33	31/33	33/33	33/33	33/33	NOT RUN
html5lib_write_single.html?file=tests8	10/10	10/10	10/10	10/10	10/10	NOT RUN
html5lib_write_single.html?file=tests9	27/27	27/27	27/27	27/27	27/27	NOT RUN
html5lib_write_single.html?file=tricky01	9/9	9/9	9/9	9/9	9/9	NOT RUN
html5lib_write_single.html?file=void-in-phrasing	13/13	13/13	13/13	13/13	13/13	NOT RUN
html5lib_write_single.html?file=webkit01	52/52	52/52	52/52	52/52	52/52	NOT RUN
html5lib_write_single.html?file=webkit02	43/44	40/44	44/44	44/44	40/44	NOT RUN
html_content_in_foreign_context.html	PASS	PASS	PASS	PASS	PASS	NOT RUN
inhead-noscript-head.html	FAIL	PASS	PASS	PASS	PASS	NOT RUN
insert-into-nonempty-document.html	4/4	1/4	1/4	0/4	0/4	NOT RUN
math-parse01.html	9/9	9/9	9/9	9/9	9/9	NOT RUN
math-parse03.html	19/19	19/19	19/19	19/19	19/19	NOT RUN
meta-inhead-insertion-mode.html	PASS	PASS	PASS	PASS	PASS	NOT RUN
misnested-form-in-template.html	PASS	PASS	PASS	PASS	PASS	NOT RUN
named-character-references.html	2231/2231	2231/2231	2231/2231	2231/2231	2231/2231	NOT RUN
newline-normalization-cr-then-lf.html	6/6	6/6	6/6	6/6	6/6	NOT RUN
no-doctype-name.html	PASS	PASS	PASS	PASS	PASS	NOT RUN
quotes-in-meta.html	PASS	PASS	PASS	PASS	PASS	NOT RUN
the-end.html	4/4	4/4	4/4	4/4	3/4	NOT RUN
truncated-markup-declaration-at-eof.html	3/3	3/3	0/3	3/3	3/3	NOT RUN
unclosed-svg-script.html	5/5	5/5	5/5	5/5	2/5	NOT RUN
zero.html	14/14	14/14	14/14	14/14	14/14	NOT RUN