README.md

fork from: https://github.com/mozilla/arewefastyet/tree/master/benchmarks/v8-v7

update

npm run build

npm run update

npm run update:doc

webui: https://ahaoboy.github.io/js-engine-benchmark/

Engine & Runtime (36/41)

name	lang	repo	score	platform	description
v8		v8.dev v8-build	48299 62.4M 773/M	✅unix ✅macArm ✅windows	V8 is Google’s open source high-performance JavaScript and WebAssembly engine
JavaScriptCore		JavaScriptCore jsc-build	45135 34.4M 1313/M	✅unix ✅macArm ✅windows	JavaScriptCore is the built-in JavaScript engine for WebKit, which implements ECMAScript as in ECMA-262 specification
bun		bun setup-bun	43767 73.2M 597/M	✅unix ✅macArm ✅windows	Incredibly fast JavaScript runtime, bundler, test runner, and package manager – all in one
deno		deno setup-deno	42130 101.3M 415/M	✅unix ✅macArm ✅windows	A modern runtime for JavaScript and TypeScript
bare		bare bare-build	40352 43M 938/M	✅unix ✅macArm ❌windows	Small and modular JavaScript runtime for desktop and mobile
dune		dune	39624 52.2M 758/M	✅unix ✅macArm ✅windows	JavascriptA hobby runtime for JavaScript and TypeScript
lo		lo lo-build	38825 40.7M 955/M	✅unix ❌macArm ❌windows	it's JavaScript Jim, but not as we know it
node		node setup-node	35488 109.5M 324/M	✅unix ✅macArm ✅windows	Node.js JavaScript runtime
spidermonkey		spidermonkey.dev spidermonkey-build	19550 40.8M 478/M	✅unix ✅macArm ✅windows	SpiderMonkey is Mozilla’s JavaScript and WebAssembly Engine, used in Firefox
ChakraCore		ChakraCore ChakraCore-build	19537 19.3M 1011/M	✅unix ❌macArm ✅windows	ChakraCore is an open source Javascript engine with a C API
mozjs		mozjs mozjs-cli	17672 33.2M 532/M	✅unix ✅macArm ❌windows	Rust bindings to SpiderMonkey
spiderfire		spiderfire spiderfire-build	16937 44.7M 379/M	✅unix ✅macArm ✅windows	JavaScript Runtime built with Mozilla's SpiderMonkey Engine
graaljs		graaljs	7984 180.2M 44/M	✅unix ✅macArm ✅windows	A ECMAScript 2023 compliant JavaScript implementation built on GraalVM. With polyglot language interoperability support. Running Node.js applications!
jjs		nashorn	2455 0 0/M	✅unix ✅macArm ❌windows	Nashorn engine is an open source implementation of the ECMAScript Edition 5.1 Language Specification
hermes		hermes	1494 36M 41/M	✅unix ✅macArm ✅windows	A JavaScript engine optimized for running React Native
quickjs		quickjs quickjs-build	1189 1M 1163/M	✅unix ✅macArm ✅windows	QuickJS is a small and embeddable Javascript engine. It supports the ES2023 specification including modules, asynchronous generators, proxies and BigInt.
llrt		llrt	911 14.2M 64/M	✅unix ✅macArm ✅windows	LLRT (Low Latency Runtime) is a lightweight JavaScript runtime
txiki.js		txiki.js txiki.js-build	810 4.1M 199/M	✅unix ✅macArm ✅windows	A tiny JavaScript runtime
rquickjs		rquickjs rquickjs-cli	803 1.5M 535/M	✅unix ✅macArm ✅windows	High level bindings to the quickjs javascript engine
primjs		primjs primjs-build	760 831.3K 936/M	✅unix ✅macArm ❌windows	JavaScript Engine Optimized for Lynx
rquickjs-pgo		rquickjs rqjs-pgo-build	740 1.4M 525/M	✅unix ❌macArm ✅windows	High level bindings to the quickjs javascript engine
njs		njs njs-build	728 1.9M 390/M	✅unix ✅macArm ❌windows	A subset of JavaScript language to use in nginx
quickjs-ng		quickjs	693 1.4M 486/M	✅unix ✅macArm ✅windows	QuickJS, the Next Generation: a mighty JavaScript engine
ladybird		ladybird ladybird-js-build	688 43.8M 15/M	✅unix ✅macArm ❌windows	Truly independent web browser
quickjs-emscripten		quickjs-emscripten quickjs-emscripten-cli	522 0 0/M	✅unix ✅macArm ✅windows	Safely execute untrusted Javascript in your Javascript, and execute synchronous code that uses async functions
duktape		duktape duktape-build	493 370.4K 1363/M	✅unix ✅macArm ✅windows	embeddable Javascript engine with a focus on portability and compact footprint
mujs-pgo		mujs mujs-pgo-build	392 422.8K 949/M	✅unix ❌macArm ✅windows	An embeddable Javascript interpreter in C
mujs-one		mujs-one	370 685K 553/M	✅unix ❌macArm ❌windows	mujs by c2rust
mujs		mujs mujs-build	350 378.8K 946/M	✅unix ✅macArm ✅windows	An embeddable Javascript interpreter in C
paserati		paserati	306 13.7M 22/M	✅unix ✅macArm ✅windows	TypeScript runtime implementation written in Go. cough
ringo		ringojs	305 0 0/M	✅unix ✅macArm ❌windows	RingoJS is a JavaScript platform built on the JVM and optimized for server-side applications
goja		goja goja-build	268 13.2M 20/M	✅unix ✅macArm ✅windows	ECMAScript/JavaScript engine in pure Go
xst		moddable	267 2M 132/M	✅unix ✅macArm ❌windows	Tools for developers to create truly open IoT products using standard JavaScript on low cost microcontrollers
jint		jint jint-cli	181 69M 2/M	✅unix ✅macArm ✅windows	Javascript Interpreter for .NET
boa		boa	167 25.3M 6/M	✅unix ✅macArm ✅windows	Boa is an embeddable and experimental Javascript engine written in Rust. Currently, it has support for some of the language.
kiesel		kiesel kiesel-build	154 13.4M 11/M	✅unix ✅macArm ✅windows	A JavaScript engine written in Zig https://kiesel.dev
JerryScript		jerryscript jerryscript-build	0 454.2K 0/M	❌unix ❌macArm ❌windows	Ultra-lightweight JavaScript engine for the Internet of Things
nova		nova	0 0 0/M	❌unix ❌macArm ❌windows	Nova is a JavaScript and WebAssembly engine written in Rust
engine262		engine262	0 0 0/M	❌unix ❌macArm ❌windows	An implementation of ECMA-262 in JavaScript
rhino		rhino rhino-cli	0 0 0/M	❌unix ❌macArm ❌windows	Rhino is an open-source implementation of JavaScript written entirely in Java
hako		hako hako-cli	0 0 0/M	❌unix ❌macArm ❌windows	An embeddable, lightweight, secure, high-performance JavaScript engine

bench

7/1/2026, 3:25:33 AM

ubuntu

Engine	v8	JavaScriptCore	bun	deno	bare	dune	lo	node	spidermonkey	ChakraCore	mozjs	spiderfire	graaljs	jjs	hermes	quickjs	llrt	txiki.js	rquickjs	primjs	rquickjs-pgo	njs	quickjs-ng	ladybird	quickjs-emscripten	duktape	mujs-pgo	mujs-one	mujs	paserati	goja	xst	JerryScript	ringo	jint	boa	kiesel
Version	15.1.0		1.4.0	2.9.0		0.11.2		26.4.0	147.0	1.13.0.0.beta			25.1.3		0.12.0	2026.06.04	0.8.0.beta	24.12.0				0.9.2	0.15.1			2.99.99			1.3.8	0.9.10		17.9.1	3.0.0	4.0.0		0.21.1	0.1.0.dev
Total size	62.4M	34.4M	73.2M	101.3M	43M	52.2M	40.7M	109.5M	40.8M	19.3M	33.2M	44.7M	180.2M	0	36M	1M	14.2M	4.1M	1.5M	831.3K	1.4M	1.9M	1.4M	43.8M	0	370.4K	422.8K	685K	378.8K	13.7M	13.2M	2M	454.2K	0	69M	25.3M	13.4M
Exe size	897.5K	34.4M	73.2M	101.3M	43M	52.2M	40.7M	109.5M	40.8M	472.2K	33.2M	44.7M	764.2K	0	36M	1M	14.2M	4.1M	1.5M	831.3K	1.4M	1.9M	1.4M	43.8M	0	370.4K	422.8K	685K	378.8K	13.7M	13.2M	2M	454.2K	0	69M	25.3M	13.4M
Dll size	61.6M	0	0	0	0	0	0	0	0	18.8M	0	0	179.4M	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
Richards	38080	40174	40488	34892	31920	33826	33526	33968	14488	22823	12917	13905	39514	9253	1091	858	707	693	618	619	572	511	632	629	412	289	272	246	210	156	192	90	271	150	98	114	81
DeltaBlue	104321	59129	57172	80373	74773	79275	76618	76346	13779	25226	12986	12814	20768	238	993	761	669	663	608	617	576	538	614	561	401	323	355	350	296	213	250	163	280	197	108	121	76
Crypto	42837	50821	48166	41951	41501	38246	41175	37788	19801	31876	19973	17823	12855	8119	1361	852	683	592	608	549	533	881	380	980	428	760	188	190	177	128	123	330	302	153	97	101	94
RayTrace	117880	115216	114994	75775	70225	71557	64601	70003	28535	31228	27232	26439	759	1498	1548	1596	1175	1067	1126	956	902	677	919	816	479	574	459	518	432	342	266	505	345	484	245	259	196
EarleyBoyer	83876	71114	68458	72604	68594	71931	68419	71931	41391	7089	38521	35890	36210	1173	3357	2051	1825	1640	1369	1386	1332	1653	1273	1227	917	546	461	516	420	557	488	323		554	270	318	189
RegExp	10867	12480	12949	10313	10152	10445	8837	10233	8828	7713	8637	8464	1119	881	541	380	259	224	218	227	215	115	190	66	183	135	232	215	194	380	207	94		456	235	49	156
Splay	41862	34951	29899	38537	37649	28343	32613	12841	23624	18800	14228	12102	1974	5476	3211	3245	2437	1767	2228	1789	2123	2070	1671	1305	1292	1250	1350	791	1269	1142	859	389		847	429	459	515
NavierStokes	38694	39920	39623	38584	38545	38881	38321	38803	21919	36025	22024	21941	25796	8721	1861	1783	1089	987	1008	985	938	1216	970	1676	747	937	461	473	463	220	199	886		159	165	230	182
Score	48299	45135	43767	42130	40352	39624	38825	35488	19550	19537	17672	16937	7984	2455	1494	1189	911	810	803	760	740	728	693	688	522	493	392	370	350	306	268	267		305	181	167	154
Score/MB	773	1313	597	415	938	758	955	324	478	1011	532	379	44		41	1163	64	199	535	936	525	390	486	15		1363	949	553	946	22	20	132			2	6	11
Time(s)	20	20	20	20	20	20	20	20	20	21	20	20	25	41	34	38	44	50	51	52	54	62	57	78	63	69	82	83	89	100	116	132	31	102	146	179	163

macos-arm64

Engine	JavaScriptCore	v8	dune	bare	deno	bun	node	spidermonkey	mozjs	spiderfire	graaljs	jjs	primjs	quickjs	txiki.js	quickjs-ng	rquickjs	ladybird	hermes	njs	llrt	duktape	quickjs-emscripten	mujs	xst	JerryScript	paserati	goja	ringo	kiesel	boa	jint
Version		15.1.207	0.11.2		2.9.0	1.4.0	26.4.0	147.0			25.1.3			2026.06.04	24.12.0	0.15.1			0.12.0	0.9.2	0.8.0.beta	2.99.99		1.3.8	17.9.1	3.0.0	0.9.10		4.0.0	0.1.0.dev	0.21.1
Total size	79.2M	27.6M	44.2M	32.8M	78.8M	56.5M	100.5M	134.9M	29.8M	40M	175.6M	0	1.5M	934.2K	3.4M	4.2M	1.3M	40.2M	13.9M	2M	11.8M	431.4K	0	395.5K	1.5M	482.8K	12.9M	12.7M	0	12.5M	22.4M	75.4M
Exe size	737.1K	27.6M	44.2M	32.8M	78.8M	56.5M	100.5M	67.5M	29.8M	40M	92.2K	0	1.5M	934.2K	3.4M	2.1M	1.3M	40.2M	7M	1.5M	11.8M	431.4K	0	395.5K	1.5M	482.8K	12.9M	12.7M	0	12.5M	22.4M	75.4M
Dll size	78.5M	0	0	0	0	0	0	67.5M	0	0	175.5M	0	0	0	0	2.1M	0	0	7M	574.4K	0	0	0	0	0	0	0	0	0	0	0	0
Richards	51763	43076	61510	45137	46525	38705	37794	15822	15762	15692	27493	20299	1176	1039	1093	1111	1007	1033	668	739	739	537	592	361	115	218	265	331	194	154	171	153
DeltaBlue	77940	132983	112334	111290	74971	48808	78819	18387	17812	17369	14480	2400	1308	1242	1146	1147	1098	922	522	823	845	602	672	556	212	235	362	381	278	150	190	169
Crypto	75156	65684	56258	57480	47306	54007	43825	26718	26505	22020	13864	14345	1799	894	1109	840	758	1349	840	1212	605	1383	586	286	432	268	207	198	101	167	159	140
RayTrace	190843	165980	100121	102636	101008	144076	77625	52317	49431	42433	4050	2413	1943	2697	2128	1780	1696	1641	1334	1102	1601	1151	886	963	706	334	611	478	735	377	421	350
EarleyBoyer	102322	122165	105609	98665	92043	76025	72638	55367	51902	48656	22570	1220	3857	3298	3069	2479	2277	2528	3443	2732	1769	1222	1508	1081	420		1055	858	765	351	534	394
RegExp	32457	15804	15622	14197	9951	15985	12056	12678	13170	12872	803	1052	312	530	299	298	302	115	573	230	315	255	281	327	338		585	302	581	260	84	215
Splay	57370	69153	49644	59366	39311	26540	15036	29386	19498	16164	805	2187	5126	6177	3040	3170	3351	3014	3583	2410	3577	2437	2125	1162	586		1919	1426	1206	936	707	632
NavierStokes	37694	39544	39474	39771	29591	24611	34156	21623	21200	21390	11267	2935	4058	1806	1905	1249	1190	2022	1315	1827	1080	1572	989	679	1087		357	331	243	326	373	196
Score	67194	65278	57873	56093	45308	42991	38225	25546	23828	22013	6617	3295	1846	1671	1411	1239	1185	1179	1175	1107	1034	941	810	594	401		517	442	389	282	267	246
Score/MB	848	2363	1310	1710	575	761	380	189	800	550	37		1226	1831	420	297	918	29	84	544	87	2233		1538	260		40	34		22	11	3
Time(s)	20	20	20	20	20	20	20	20	20	20	26	35	37	33	37	40	41	53	34	46	43	43	48	56	88	33	66	76	92	99	115	118

windows

Engine	v8	JavaScriptCore	deno	bun	dune	node	ChakraCore	spidermonkey	spiderfire	graaljs	quickjs	hermes	rquickjs	quickjs-ng	txiki.js	llrt	rquickjs-pgo	mujs-pgo	mujs	xst	quickjs-emscripten	duktape	paserati	goja	jint	boa	kiesel
Version	15.1.207		2.9.0	1.4.0	0.11.2	26.4.0	1.11.24.0	147.0		25.1.3	2026.06.04	0.12.0		0.15.1	24.12.0	0.8.0.beta			1.3.8			2.7.0	0.9.10			0.21.1	0.1.0.dev
Total size	63.6M	125.6M	125.4M	103.6M	82M	133.7M	15.6M	53.7M	77.3M	189.6M	9M	89.6M	9.2M	6.4M	42.7M	45.6M	10.3M	8.2M	8.2M	6.5M	0	8.1M	21M	20.5M	99.1M	51.1M	33.2M
Exe size	31.2M	344.5K	94.6M	76.1M	48.9M	98.4M	334K	34.8M	42.6M	378.5K	1.1M	3M	1.4M	1.3M	4.1M	14.6M	1M	428K	400.5K	1.3M	0	329.5K	13.9M	13.3M	68.8M	26.4M	19.6M
Dll size	32.4M	125.2M	30.8M	27.5M	33.1M	35.3M	15.3M	18.8M	34.6M	189.2M	7.9M	86.6M	7.8M	5.2M	38.7M	31M	9.3M	7.8M	7.8M	5.2M	0	7.8M	7.1M	7.1M	30.3M	24.6M	13.6M
Richards	37208	35309	34762	34434	34416	34317	22745	12977	13065	30247	767	662	530	571	439	380	411	253	239		388	167	154	171	104	106	75
DeltaBlue	106595	47202	77265	45807	78654	73940	23981	13442	12787	12847	655	555	497	530	396	361	439	349	334		408	212	204	206	115	110	69
Crypto	42571	42435	41662	43055	38184	36167	31563	19411	17823	8169	871	728	457	585	413	411	320	185	174		428	250	125	98	89	102	87
RayTrace	110554	87171	69929	99159	68449	68893	39515	27030	25086	3310	1421	885	760	640	724	613	580	487	443		474	366	334	179	256	124	174
EarleyBoyer	84382	60491	70358	58991	70532	72511	37875	38819	36722	19052	1714	2110	1034	1075	1102	990	952	616	546		919	452	563	436	284	287	172
RegExp	9951	19437	10052	11353	9656	9489	8784	8646	8745	666	339	370	178	158	192	188	157	246	193		182	106	386	194	271	46	140
Splay	43573	36076	30903	29598	27365	13224	24488	20161	14522	1633	2906	2249	1346	1154	1328	1377	1293	1169	1132		1349	1006	1065	800	429	448	502
NavierStokes	38321	32879	37990	38732	38694	37766	31102	21031	21559	14218	1955	1069	658	598	732	704	740	476	451		744	1054	216	189	151	232	172
Score	47559	41381	39957	38832	38768	34844	25384	18380	17158	6476	1094	904	591	582	567	530	513	401	367		521	337	300	230	185	146	142
Score/MB	747	329	318	374	472	260	1626	342	222	34	122	10	64	90	13	11	49	48	44			41	14	11	1	2	4
Time(s)	20	20	20	20	20	20	20	20	20	25	39	42	62	63	61	62	66	78	88	135	63	89	103	131	150	199	178