What determines a website's leaderboard position?

Websites are ranked best to worst based on their Core Web Vitals performance. Each website receives a score that combines the performance of three key metrics: Largest Contentful Paint (LCP), Cumulative Layout Shift (CLS), and Interaction to Next Paint (INP).

What are Core Web Vitals?

Core Web Vitals (CWV) are a set of metrics used to measure user experience on the web. Each metric measures a different aspect of user experience, focusing on initial content display, visual stability, and responsiveness.

How often are leaderboards updated?

Leaderboards are updated once per month. Aggregated performance data is collected from the Chrome User Experience Report. Technology data is sourced from the HTTP Archive.

Which US Government websites are included?

This leaderboard tracks 228 of the world's top us government websites. Sites are curated based on global notoriety within the US Government sector.

Speed Tools

Top Sites: Website Speed Leaderboard

World’s top websites ranked by Core Web Vitals performance.

US Government

March 2026

CWV Pass Rate

69.3 % 0.6pp

Median LCP

1.40 sec

Median CLS

0.00

Median INP

50 ms

National Council on Disability climbed 200 spots to 23rd place, while Court Services and Offender Supervision Agency dropped 111 to 227th.
The industry median LCP is 1.40 sec. Inter-American Foundation has the slowest LCP at 10.50 sec.

Data source: Chrome User Experience Report (March 2026).
Rank	Website	LCP	CLS	INP
🏆 -	Advanced Research Projects Agency for Health Drupal arpa-h.gov	900 ms	0.00	25 ms
🥈 -	Federal Maritime Commission WordPress fmc.gov	900 ms	0.00	25 ms
🥉 ⇡	Bureau of Economic Analysis Drupal bea.gov	1.10 sec	0.00	25 ms
4 ⇡	Federal Transit Administration Drupal transit.dot.gov	1.00 sec	0.00	25 ms
5 ⇣	Federal Retirement Thrift Investment Board frtib.gov	1.00 sec	0.00	50 ms
6 ⇡	Supreme Court of the United States Microsoft ASP.NET supremecourt.gov	1.00 sec	0.00	50 ms
7 ⇡	Federal Judicial Center Drupal fjc.gov	1.40 sec	0.00	25 ms
8 ⇡	Amtrak Office of Inspector General Drupal amtrakoig.gov	1.00 sec	0.00	50 ms
9 -	House of Representatives Drupal house.gov	1.00 sec	0.00	75 ms
10 ⇡	Small Business Administration Drupal sba.gov	1.20 sec	0.00	75 ms
11 ⇡	Alcohol and Tobacco Tax and Trade Bureau Drupal ttb.gov	1.10 sec	0.00	50 ms
12 ⇣	Surface Transportation Board WordPress stb.gov	800 ms	0.00	25 ms
13 ⇡	Natural Resources Conservation Service Drupal nrcs.usda.gov	1.10 sec	0.00	75 ms
14 -	Pension Benefit Guaranty Corporation Drupal pbgc.gov	1.10 sec	0.05	75 ms
15 -	Administrative Office of the United States Courts Drupal uscourts.gov	1.10 sec	0.00	50 ms
16 ⇡	Federal Highway Administration Drupal highways.dot.gov	1.30 sec	0.00	25 ms
17 ⇡	Mine Safety and Health Administration Drupal msha.gov	1.00 sec	0.00	50 ms
18 ⇣	USAJobs usajobs.gov	600 ms	0.00	50 ms
19 ⇡	Nuclear Regulatory Commission Drupal nrc.gov	1.20 sec	0.00	25 ms
20 ⇣	Federal Bureau of Prisons bop.gov	1.00 sec	0.00	100 ms
21 ⇡	United States Tax Court Wagtail ustaxcourt.gov	1.00 sec	0.05	50 ms
22 ⇣	Federal Register Stimulus federalregister.gov	1.00 sec	0.00	75 ms
23 ⇡	National Council on Disability ncd.gov	1.20 sec	0.00	50 ms
24 ⇡	Agricultural Marketing Service Drupal ams.usda.gov	900 ms	0.00	50 ms
25 ⇣	Appalachian Regional Commission WordPress arc.gov	900 ms	0.00	50 ms
26 ⇣	Food and Drug Administration Drupal fda.gov	1.10 sec	0.00	50 ms
27 ⇣	Social Security Administration Drupal ssa.gov	1.20 sec	0.00	100 ms
28 ⇡	United States Interagency Council on Homelessness Drupal usich.gov	1.70 sec	0.00	50 ms
29 ⇡	AmeriCorps Drupal americorps.gov	1.10 sec	0.00	50 ms
30 ⇡	National Technical Information Service JavaServer Pages ntis.gov	1.00 sec	0.00	25 ms
31 ⇡	Vote.gov Drupal vote.gov	900 ms	0.05	75 ms
32 ⇡	Centers for Medicare and Medicaid Services Drupal cms.gov	1.10 sec	0.00	50 ms
33 ⇡	Consumer Financial Protection Bureau Wagtail consumerfinance.gov	900 ms	0.00	100 ms
34 ⇣	Board of Governors of the Federal Reserve federalreserve.gov	1.10 sec	0.00	50 ms
35 ⇡	Department of Education Drupal ed.gov	1.50 sec	0.00	75 ms
36 ⇡	National Institute of General Medical Sciences Drupal nigms.nih.gov	1.60 sec	0.00	25 ms
37 ⇡	Agricultural Research Service Microsoft ASP.NET ars.usda.gov	1.30 sec	0.00	50 ms
38 ⇣	Merit Systems Protection Board Microsoft ASP.NET mspb.gov	700 ms	0.00	50 ms
39 ⇡	Federal Energy Regulatory Commission ferc.gov	900 ms	0.00	25 ms
40 ⇡	United States International Development Finance Corporation Drupal dfc.gov	1.50 sec	0.00	50 ms
41 ⇣	National Endowment for the Arts Drupal arts.gov	1.20 sec	0.00	50 ms
42 ⇡	Internal Revenue Service Drupal irs.gov	900 ms	0.00	100 ms
43 ⇡	National Indian Gaming Commission WordPress nigc.gov	1.60 sec	0.00	50 ms
44 ⇣	Department of Justice Drupal justice.gov	300 ms	0.00	75 ms
45 ⇡	Congressional Office of Workplace Rights WordPress ocwr.gov	1.90 sec	0.00	50 ms
46 ⇣	National Capital Planning Commission ncpc.gov	1.10 sec	0.05	50 ms
47 ⇣	Pipeline and Hazardous Materials Safety Administration Drupal phmsa.dot.gov	1.00 sec	0.00	50 ms
48 ⇡	Financial Crimes Enforcement Network Drupal fincen.gov	1.10 sec	0.00	100 ms
49 ⇣	White House WordPress whitehouse.gov	900 ms	0.00	100 ms
50 ⇡	Federal Communications Commission Drupal fcc.gov	1.40 sec	0.00	75 ms
51 ⇣	Bureau of Labor Statistics bls.gov	1.00 sec	0.05	50 ms
52 ⇣	Ready.gov Drupal ready.gov	1.40 sec	0.00	50 ms
53 ⇣	National Renewable Energy Laboratory Progress Sitefinity nlr.gov	1.40 sec	0.00	25 ms
54 ⇡	Railroad Retirement Board Drupal rrb.gov	1.10 sec	0.00	50 ms
55 ⇣	Federal Aviation Administration Drupal faa.gov	1.00 sec	0.00	50 ms
56 ⇣	Bureau of Engraving and Printing Drupal bep.gov	1.10 sec	0.00	75 ms
57 ⇣	Department of Labor Drupal dol.gov	1.30 sec	0.00	75 ms
58 ⇡	Forest Service Drupal fs.usda.gov	1.80 sec	0.00	50 ms
59 ⇡	National Reconnaissance Office DNN nro.gov	1.20 sec	0.00	50 ms
60 ⇣	Department of the Treasury Drupal home.treasury.gov	1.30 sec	0.00	75 ms
61 ⇣	National Institute of Minority Health and Health Disparities Drupal nimhd.nih.gov	1.00 sec	0.05	50 ms
62 ⇡	National Transportation Safety Board Microsoft SharePoint ntsb.gov	1.60 sec	0.00	50 ms
63 ⇣	Environmental Protection Agency Drupal epa.gov	1.20 sec	0.00	50 ms
64 ⇡	Rural Development Drupal rd.usda.gov	1.00 sec	0.05	100 ms
65 ⇣	Grants.gov Nuxt.js grants.gov	1.40 sec	0.00	50 ms
66 ⇣	Bureau of the Fiscal Service fiscal.treasury.gov	1.80 sec	0.00	75 ms
67 ⇣	Bureau of Alcohol, Tobacco, Firearms, and Explosives Drupal atf.gov	900 ms	0.05	50 ms
68 ⇣	U.S. Patent and Trademark Office Drupal uspto.gov	900 ms	0.00	50 ms
69 ⇣	United States Mint Salesforce Commerce Cloud usmint.gov	1.00 sec	0.00	75 ms
70 -	Government Accountability Office Drupal gao.gov	1.80 sec	0.00	50 ms
71 ⇡	Department of Housing and Urban Development Drupal hud.gov	1.60 sec	0.00	75 ms
72 ⇡	PubMed Django pubmed.ncbi.nlm.nih.gov	1.20 sec	0.00	75 ms
73 ⇡	National Aeronautics and Space Administration WordPress nasa.gov	1.30 sec	0.00	75 ms
74 ⇣	National Archives and Records Administration Drupal archives.gov	1.30 sec	0.00	100 ms
75 ⇣	National Institute of Nursing Research Drupal ninr.nih.gov	1.60 sec	0.00	25 ms
76 ⇡	National Science Foundation Drupal nsf.gov	1.00 sec	0.00	50 ms
77 ⇣	Bureau of Transportation Statistics Drupal bts.gov	1.20 sec	0.00	25 ms
78 ⇣	USA.gov Drupal usa.gov	900 ms	0.00	150 ms
79 -	General Services Administration Drupal gsa.gov	1.20 sec	0.05	75 ms
80 ⇣	Energy Information Administration Microsoft ASP.NET eia.gov	1.30 sec	0.00	50 ms
81 ⇡	Federal Railroad Administration Drupal railroads.dot.gov	1.20 sec	0.00	50 ms
82 ⇡	Bureau of the Census Adobe Experience Manager census.gov	1.30 sec	0.00	50 ms
83 ⇡	Department of the Interior Drupal doi.gov	1.60 sec	0.00	75 ms
84 ⇡	Bureau of Reclamation usbr.gov	1.30 sec	0.00	25 ms
85 ⇣	Performance.gov performance.gov	2.00 sec	0.00	75 ms
86 ⇣	Consumer Product Safety Commission Drupal cpsc.gov	1.40 sec	0.00	75 ms
87 ⇣	Equal Employment Opportunity Commission Drupal eeoc.gov	1.70 sec	0.00	50 ms
88 ⇣	U.S. Marshals Service Drupal usmarshals.gov	900 ms	0.00	75 ms
89 ⇣	Federal Deposit Insurance Corporation Drupal fdic.gov	1.80 sec	0.00	100 ms
90 ⇣	Centers for Disease Control and Prevention Microsoft ASP.NET cdc.gov	1.40 sec	0.00	50 ms
91 ⇣	Export-Import Bank of the United States Drupal exim.gov	1.50 sec	0.00	50 ms
92 ⇣	Institute of Museum and Library Services Drupal imls.gov	1.20 sec	0.00	25 ms
93 ⇣	Commodity Futures Trading Commission Drupal cftc.gov	1.20 sec	0.00	50 ms
94 ⇡	Delta Regional Authority WordPress dra.gov	1.70 sec	0.00	50 ms
95 ⇣	Government National Mortgage Association Microsoft SharePoint ginniemae.gov	2.10 sec	0.00	50 ms
96 ⇡	Department of Defense DNN war.gov	1.70 sec	0.00	50 ms
97 ⇣	National Eye Institute Drupal nei.nih.gov	2.10 sec	0.00	75 ms
98 ⇡	National Center for Advancing Translational Sciences Drupal ncats.nih.gov	1.90 sec	0.00	50 ms
99 ⇣	Office of the United States Trade Representative Drupal ustr.gov	1.20 sec	0.05	25 ms
100 ⇡	U.S. Commission on International Religious Freedom Drupal uscirf.gov	2.10 sec	0.00	75 ms
101 ⇣	United States Agency for Global Media WordPress usagm.gov	1.60 sec	0.05	50 ms
102 ⇡	National Institute of Arthritis and Musculoskeletal and Skin Diseases niams.nih.gov	1.70 sec	0.00	75 ms
103 ⇣	National Do Not Call Registry donotcall.gov	900 ms	0.05	75 ms
104 ⇣	Federal Law Enforcement Training Center Drupal fletc.gov	1.10 sec	0.05	50 ms
105 ⇡	National Institute of Standards and Technology Drupal nist.gov	1.40 sec	0.05	50 ms
106 ⇣	Department of Agriculture Drupal usda.gov	1.50 sec	0.00	100 ms
107 ⇡	Department of Transportation Drupal transportation.gov	1.40 sec	0.00	50 ms
108 ⇡	Food and Nutrition Service Drupal fns.usda.gov	1.50 sec	0.00	75 ms
109 ⇣	National Institute of Diabetes and Digestive and Kidney Diseases Sitecore niddk.nih.gov	1.90 sec	0.00	100 ms
110 ⇡	United States Fish and Wildlife Service Drupal fws.gov	1.90 sec	0.00	75 ms
111 ⇣	Federal Election Commission Django fec.gov	1.10 sec	0.00	50 ms
112 ⇡	National Center for Complementary and Integrative Health Gatsby nccih.nih.gov	2.20 sec	0.00	50 ms
113 ⇡	U.S. Immigration and Customs Enforcement Drupal ice.gov	1.70 sec	0.00	75 ms
114 -	Election Assistance Commission Drupal eac.gov	1.10 sec	0.00	125 ms
115 ⇣	National Institutes of Health Drupal nih.gov	1.90 sec	0.00	50 ms
116 ⇡	Citizenship and Immigration Services Drupal uscis.gov	1.00 sec	0.05	75 ms
117 ⇡	Office of Special Counsel Microsoft SharePoint osc.gov	1.90 sec	0.00	75 ms
118 ⇣	National Credit Union Administration Drupal ncua.gov	1.20 sec	0.00	100 ms
119 ⇡	Marine Mammal Commission WordPress mmc.gov	2.50 sec	0.00	25 ms
120 ⇣	National Endowment for the Humanities Drupal neh.gov	1.60 sec	0.05	50 ms
121 ⇣	Office of Surface Mining Reclamation and Enforcement Drupal osmre.gov	2.10 sec	0.00	50 ms
122 ⇡	Library of Congress loc.gov	1.60 sec	0.05	50 ms
123 ⇡	Federal Emergency Management Agency Drupal fema.gov	1.70 sec	0.00	75 ms
124 ⇡	Office of the Director of National Intelligence Joomla dni.gov	1.70 sec	0.05	50 ms
125	Bonneville Power Administration bpa.gov	2.20 sec	0.00	50 ms
126 ⇡	National Institute on Drug Abuse Drupal nida.nih.gov	1.30 sec	0.00	100 ms
127 ⇡	Government Publishing Office Progress Sitefinity gpo.gov	2.50 sec	0.00	75 ms
128 ⇡	Office of Justice Programs Drupal ojp.gov	1.90 sec	0.00	100 ms
129 ⇣	Health Resources and Services Administration Drupal hrsa.gov	1.70 sec	0.05	50 ms
130 ⇣	Open World Leadership Center Drupal openworld.gov	2.00 sec	0.00	50 ms
131 ⇣	Securities and Exchange Commission Drupal sec.gov	900 ms	0.05	50 ms
132 ⇡	National Wildfire Coordinating Group Drupal nwcg.gov	1.70 sec	0.00	50 ms
133 ⇣	National Gallery of Art Drupal nga.gov	1.80 sec	0.00	100 ms
134 ⇣	Office of Personnel Management Microsoft ASP.NET opm.gov	1.00 sec	0.10	75 ms
135 ⇡	Federal Housing Finance Agency Drupal fhfa.gov	1.40 sec	0.05	50 ms
136 ⇣	African Development Foundation React usadf.gov	2.30 sec	0.00	75 ms
137 ⇡	Farm Credit Administration fca.gov	1.20 sec	0.15	25 ms
138 ⇣	Chemical Safety and Hazard Investigation Board Microsoft ASP.NET csb.gov	2.20 sec	0.00	50 ms
139 ⇡	Architect of the Capitol Drupal aoc.gov	1.30 sec	0.10	50 ms
140 ⇡	PACER Drupal pacer.uscourts.gov	1.00 sec	0.10	50 ms
141 ⇡	Office of the Comptroller of the Currency Percussion occ.gov	2.00 sec	0.00	75 ms
142 ⇡	National Security Agency DNN nsa.gov	2.50 sec	0.00	75 ms
143 ⇡	Selective Service System WordPress sss.gov	1.10 sec	0.10	75 ms
144 ⇣	Advisory Council on Historic Preservation Drupal achp.gov	1.50 sec	0.05	25 ms
145 ⇣	National Institute on Deafness and Other Communication Disorders Drupal nidcd.nih.gov	2.40 sec	0.00	100 ms
146 ⇣	National Institute of Allergy and Infectious Diseases Drupal niaid.nih.gov	1.80 sec	0.05	50 ms
147 ⇣	Minority Business Development Agency Drupal mbda.gov	1.40 sec	0.05	50 ms
148 -	Legal Services Corporation Drupal lsc.gov	1.90 sec	0.00	125 ms
149 ⇡	National Institute on Alcohol Abuse and Alcoholism Drupal niaaa.nih.gov	2.00 sec	0.00	50 ms
150 ⇣	Peace Corps Wagtail peacecorps.gov	1.50 sec	0.00	75 ms
151 ⇣	U.S. Agency for International Development usaid.gov	1.30 sec	0.00	200 ms
152 ⇣	Central Intelligence Agency Gatsby cia.gov	1.40 sec	0.00	125 ms
153 ⇡	National Park Service nps.gov	1.10 sec	0.10	50 ms
154 ⇣	National Institute on Aging nia.nih.gov	1.60 sec	0.00	100 ms
155 ⇡	United States Senate senate.gov	900 ms	0.15	50 ms
156 -	MedlinePlus medlineplus.gov	1.40 sec	0.05	150 ms
157 ⇣	Transportation Security Administration Drupal tsa.gov	900 ms	0.10	75 ms
158 ⇣	Administration for Community Living Drupal acl.gov	1.60 sec	0.05	50 ms
159 ⇡	Department of Energy Drupal energy.gov	2.10 sec	0.00	75 ms
160 ⇣	National Institute of Mental Health Drupal nimh.nih.gov	2.00 sec	0.05	50 ms
161 ⇣	Administrative Conference of the United States Drupal acus.gov	1.60 sec	0.00	50 ms
162 ⇣	Federal Labor Relations Authority Drupal flra.gov	1.50 sec	0.10	50 ms
163 ⇣	American Battle Monuments Commission WordPress abmc.gov	2.60 sec	0.00	100 ms
164 ⇣	Bureau of Indian Affairs Drupal bia.gov	1.20 sec	0.10	75 ms
165 ⇣	National Human Genome Research Institute Drupal genome.gov	2.60 sec	0.00	50 ms
166 ⇡	International Trade Commission Drupal usitc.gov	1.50 sec	0.15	50 ms
167 ⇣	Data.gov data.gov	2.60 sec	0.05	50 ms
168 ⇡	U.S. Customs and Border Protection Drupal cbp.gov	1.00 sec	0.10	50 ms
169 ⇣	Agency for Healthcare Research and Quality Drupal ahrq.gov	2.30 sec	0.05	25 ms
170 ⇡	National Institute of Environmental Health Sciences Drupal niehs.nih.gov	2.40 sec	0.00	75 ms
171 ⇣	Fogarty International Center Microsoft SharePoint fic.nih.gov	3.40 sec	0.00	50 ms
172 ⇣	Access Board access-board.gov	1.20 sec	0.15	50 ms
173 ⇣	Economic Development Administration eda.gov	1.60 sec	0.10	50 ms
174 ⇣	Denali Commission WordPress denali.gov	1.00 sec	0.15	25 ms
175 ⇣	Department of State WordPress state.gov	1.80 sec	0.15	100 ms
176 ⇣	National Flood Insurance Program Drupal floodsmart.gov	1.50 sec	0.25	125 ms
177 ⇡	Trade and Development Agency WordPress ustda.gov	2.10 sec	0.10	50 ms
178 ⇣	Animal and Plant Health Inspection Service Drupal aphis.usda.gov	1.70 sec	0.10	50 ms
179 -	Administration for Children and Families Drupal acf.gov	1.80 sec	0.10	100 ms
180 ⇣	Millennium Challenge Corporation Vue.js mcc.gov	2.80 sec	0.05	50 ms
181 ⇡	Bureau of Land Management Drupal blm.gov	2.20 sec	0.10	75 ms
182 ⇣	Office of Government Ethics oge.gov	1.40 sec	0.10	50 ms
183 ⇣	National Institute of Neurological Disorders and Stroke Drupal ninds.nih.gov	2.10 sec	0.15	75 ms
184 ⇣	National Oceanic and Atmospheric Administration Drupal noaa.gov	1.50 sec	0.10	100 ms
185 ⇣	United States Secret Service Drupal secretservice.gov	1.40 sec	0.10	100 ms
186 ⇡	Capitol Police Drupal uscp.gov	1.70 sec	0.20	75 ms
187 ⇣	Department of Health and Human Services Drupal hhs.gov	1.20 sec	0.10	75 ms
188 ⇡	Medicare.gov Drupal medicare.gov	1.60 sec	0.15	125 ms
189 ⇣	United States Sentencing Commission Drupal ussc.gov	4.10 sec	0.00	50 ms
190 ⇣	Substance Abuse and Mental Health Services Administration Drupal samhsa.gov	2.10 sec	0.00	175 ms
191 ⇣	Occupational Safety and Health Administration Drupal osha.gov	1.30 sec	0.10	50 ms
192 ⇡	Presidio Trust React presidio.gov	1.80 sec	0.15	100 ms
193 ⇣	Cybersecurity and Infrastructure Security Agency Drupal cisa.gov	1.30 sec	0.10	50 ms
194 ⇣	E-Verify Drupal e-verify.gov	900 ms	0.75	50 ms
195 ⇣	Drug Enforcement Administration dea.gov	1.90 sec	0.10	100 ms
196 ⇣	National Institute of Child Health and Human Development Drupal nichd.nih.gov	3.20 sec	0.00	100 ms
197 ⇣	Postal Regulatory Commission Drupal prc.gov	2.90 sec	0.10	50 ms
198 ⇡	National Cancer Institute Drupal cancer.gov	2.20 sec	0.30	100 ms
199 ⇣	National Weather Service weather.gov	900 ms	0.00	275 ms
200 ⇡	Federal Trade Commission Drupal ftc.gov	3.40 sec	0.00	100 ms
201 ⇣	Congressional Budget Office Drupal cbo.gov	1.70 sec	0.35	25 ms
202 ⇣	Identity Theft Angular identitytheft.gov	2.10 sec	0.30	125 ms
203 ⇣	Federal Mediation and Conciliation Service WordPress fmcs.gov	2.20 sec	0.10	50 ms
204 ⇣	National Library of Medicine nlm.nih.gov	1.70 sec	0.15	100 ms
205 ⇡	Department of Homeland Security Drupal dhs.gov	2.10 sec	0.20	125 ms
206 ⇣	Bureau of Industry and Security React bis.gov	2.20 sec	0.25	50 ms
207 ⇡	Regulations.gov Ember.js regulations.gov	3.30 sec	0.05	75 ms
208 ⇡	Recreation.gov React recreation.gov	1.60 sec	0.35	150 ms
209 ⇣	National Telecommunications and Information Administration Drupal ntia.gov	1.30 sec	0.15	50 ms
210 ⇡	Department of Commerce Drupal commerce.gov	2.20 sec	0.10	50 ms
211 ⇣	National Highway Traffic Safety Administration Drupal nhtsa.gov	1.40 sec	0.55	75 ms
212 -	United States Geological Survey Drupal usgs.gov	4.00 sec	0.00	50 ms
213 ⇡	National Heart, Lung, and Blood Institute Drupal nhlbi.nih.gov	1.70 sec	0.65	100 ms
214 ⇣	Recall.gov Microsoft ASP.NET recalls.gov	3.70 sec	0.00	250 ms
215 ⇣	National Institute of Dental and Craniofacial Research Drupal nidcr.nih.gov	2.90 sec	0.25	100 ms
216 ⇣	International Trade Administration Drupal trade.gov	2.10 sec	0.20	75 ms
217 ⇡	Healthcare.gov Gatsby healthcare.gov	2.80 sec	0.20	150 ms
218 ⇣	National Institute of Biomedical Imaging and Bioengineering Drupal nibib.nih.gov	2.20 sec	0.35	50 ms
219 ⇣	SAM.gov Drupal sam.gov	1.30 sec	0.65	50 ms
220 ⇣	GovInfo Drupal govinfo.gov	1.90 sec	0.50	175 ms
221 ⇣	Department of Veterans Affairs React va.gov	2.20 sec	0.60	100 ms
222 -	Defense Nuclear Facilities Safety Board Drupal dnfsb.gov	1.10 sec	0.00
223 ⇡	USASpending.gov React usaspending.gov	2.90 sec	0.35	100 ms
224 ⇣	Privacy and Civil Liberties Oversight Board Microsoft ASP.NET pclob.gov	1.30 sec	0.00
225 -	ClinicalTrials.gov Angular clinicaltrials.gov	2.40 sec	0.80	125 ms
226 -	StudentAid.gov Angular studentaid.gov	4.30 sec	0.30	125 ms
227 ⇣	Court Services and Offender Supervision Agency WordPress csosa.gov	2.60 sec	0.05
228 ⇣	Inter-American Foundation WordPress iaf.gov	10.50 sec	0.45	100 ms

About Website Speed Leaderboard Project

We ranked the world's top websites based on Core Web Vitals, the most recognised indicators of great user experience on the web today.

Using real-world data from the Chrome User Experience Report and technology data from the HTTP Archive, these monthly leaderboards showcase the fastest websites across industries, highlighting those that deliver exceptional performance.

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Your questions answered

What determines a website's leaderboard position?: Websites are ranked best to worst based on their Core Web Vitals performance. Each website receives a score that combines the performance of three key metrics: Largest Contentful Paint (LCP), Cumulative Layout Shift (CLS), and Interaction to Next Paint (INP).
What are Core Web Vitals?: Core Web Vitals (CWV) are a set of metrics used to measure user experience on the web. Each metric measures a different aspect of user experience, focusing on initial content display, visual stability, and responsiveness. For more on CWV, read our guide.
How often are leaderboards updated?: Leaderboards are updated once per month. Aggregated performance data is collected from the Chrome User Experience Report. Technology data is sourced from the HTTP Archive.
Which US Government websites are included?: This leaderboard tracks 228 of the world's top us government websites. Sites are curated based on global notoriety within the US Government sector.

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CrUX Dashboard showing the Core Web Vitals assessment status, Largest Contentful Paint and Cumulative Layout Shift charts and values