Websites Powered by PDF.js
79,099 websites tracked using PDF.js (Miscellaneous) · mozilla.github.io
PDF.js is a web technology detected on the site. Its official site is mozilla.github.io. PoweredBy tracks the websites that use PDF.js across the public web; the tracked counts, adoption trend, and site list on this page are updated from our ongoing crawl of the miscellaneous ecosystem.
Usage trend
10K
20K
30K
40K
Jun 2018
May 2020
Aug 2022
Jul 2024
Jun 2026
Domains observed using PDF.js in each month's HTTP Archive crawl,
Jun 2018 to Jun 2026 · peak 35,367 in Jun 2026. The tracked total above also
counts sites not re-crawled recently.
Core Web Vitals
LCP 2.2 s
INP 100 ms
CLS 0
TTFB 700 ms
Median site among 43,836 PDF.js sites with Chrome UX data, p75 values, Jun 2026.
Top countries
United States
16,571
India
10,607
Germany
7,093
United Kingdom
7,075
France
6,519
Brazil
6,144
Canada
5,755
Spain
5,251
Sites using PDF.js by audience country, Chrome UX Report.
Top sites by authority
9+
10% · 39 of 372 sites
8+
8% · 593 of 7,677 sites
7+
4% · 1,722 of 45,712 sites
6+
3% · 2,763 of 110,136 sites
5+
2% · 4,001 of 246,751 sites
The share of the web's most authoritative domains, by Open Page Rank tier, seen running PDF.js in recent crawls. Only 372 domains worldwide score 9 or higher.
Websites using PDF.js
| # | Domain | Open Page RankOPR | Est. monthly visits (US)Visits (US) | Keywords | First seen |
|---|---|---|---|---|---|
| 201 | ucf.edu | 8.58/10 | 343,100 | 84,810 | Jul 2019 |
| 202 | hamburg.de | 8.58/10 | 2,000 | 2,955 | Sep 2023 |
| 203 | fu-berlin.de | 8.58/10 | 11,500 | 7,748 | Mar 2025 |
| 204 | univie.ac.at | 8.58/10 | 10,000 | 1,103 | Aug 2022 |
| 205 | nd.gov | 8.58/10 | 111,300 | 16,742 | Jun 2026 |
| 206 | alberta.ca | 8.58/10 | 115,900 | 65,281 | Oct 2024 |
| 207 | uni-heidelberg.de | 8.58/10 | 8,000 | 4,696 | Mar 2024 |
| 208 | unam.mx | 8.58/10 | 1,900 | 1,196 | Aug 2018 |
| 209 | neocities.org | 8.57/10 | 23,000 | 6,887 | Oct 2023 |
| 210 | imperial.ac.uk | 8.57/10 | 65,500 | 49,885 | Jul 2021 |
| 211 | byu.edu | 8.57/10 | 71,300 | 7,371 | Feb 2023 |
| 212 | helsinki.fi | 8.57/10 | 10,800 | 5,290 | Nov 2021 |
| 213 | gov.on.ca | 8.57/10 | - | - | Mar 2020 |
| 214 | northeastern.edu | 8.57/10 | 104,200 | 14,005 | Oct 2020 |
| 215 | lacounty.gov | 8.57/10 | 308,300 | 23,022 | Jan 2021 |
| 216 | ualberta.ca | 8.57/10 | 69,300 | 47,780 | Aug 2025 |
| 217 | wisconsin.gov | 8.57/10 | 127,800 | 2,079 | Oct 2025 |
| 218 | dhl.com | 8.56/10 | 1,187,200 | 132,595 | Apr 2020 |
| 219 | rice.edu | 8.56/10 | 256,200 | 13,279 | Jul 2021 |
| 220 | la.gov | 8.56/10 | - | - | Sep 2022 |
| 221 | cuni.cz | 8.56/10 | 4,400 | 1,637 | Dec 2020 |
| 222 | doctolib.fr | 8.55/10 | 5,200 | 6,246 | Dec 2018 |
| 223 | elevenlabs.io | 8.55/10 | 161,600 | 71,869 | Apr 2026 |
| 224 | pmi.org | 8.55/10 | 437,200 | 66,783 | Feb 2022 |
| 225 | belgium.be | 8.55/10 | 20,400 | 1,736 | Jan 2025 |
| 226 | kcl.ac.uk | 8.55/10 | 76,400 | 39,188 | Nov 2021 |
| 227 | camara.leg.br | 8.55/10 | 7,600 | 6,802 | Nov 2024 |
| 228 | arkansas.gov | 8.55/10 | 1,000 | 768 | Jan 2021 |
| 229 | rwth-aachen.de | 8.55/10 | 640 | 1,476 | Sep 2022 |
| 230 | jal.co.jp | 8.55/10 | 484,400 | 83,278 | Dec 2024 |
| 231 | duolingo.com | 8.54/10 | 213,200 | 57,263 | Jun 2021 |
| 232 | uvic.ca | 8.54/10 | 44,200 | 19,833 | May 2019 |
| 233 | kb.se | 8.54/10 | 6,800 | 235 | Aug 2022 |
| 234 | sd.gov | 8.54/10 | 67,700 | 11,284 | Sep 2023 |
| 235 | uconn.edu | 8.54/10 | 120,000 | 8,114 | Nov 2023 |
| 236 | iste.org | 8.53/10 | 19,100 | 14,815 | Feb 2026 |
| 237 | spb.ru | 8.53/10 | - | - | May 2024 |
| 238 | lg.com | 8.53/10 | 1,642,800 | 589,990 | Oct 2020 |
| 239 | uni-stuttgart.de | 8.53/10 | 1,600 | 2,181 | Jan 2023 |
| 240 | bl.uk | 8.53/10 | 28,200 | 14,429 | Aug 2020 |
| 241 | ucr.edu | 8.53/10 | 112,800 | 12,297 | Nov 2021 |
| 242 | alabama.gov | 8.53/10 | 53,800 | 10,348 | Jan 2026 |
| 243 | fincen.gov | 8.53/10 | 357,200 | 82,623 | Feb 2024 |
| 244 | ucar.edu | 8.52/10 | 1,500 | 961 | Jun 2026 |
| 245 | saude.gov.br | 8.52/10 | - | - | Jun 2020 |
| 246 | manchester.ac.uk | 8.52/10 | 64,000 | 18,257 | Jul 2019 |
| 247 | europepmc.org | 8.52/10 | 39,200 | 77,989 | Oct 2020 |
| 248 | upm.es | 8.52/10 | 2,100 | 1,692 | Sep 2019 |
| 249 | keio.ac.jp | 8.52/10 | 9,400 | 1,068 | Jul 2021 |
| 250 | gov.ro | 8.51/10 | 640 | 166 | Aug 2018 |
| 251 | drexel.edu | 8.51/10 | 301,000 | 78,571 | Feb 2025 |
| 252 | monash.edu | 8.51/10 | 257,300 | 68,187 | Sep 2025 |
| 253 | copernicus.eu | 8.51/10 | 17,100 | 6,413 | Mar 2023 |
| 254 | ibge.gov.br | 8.51/10 | 4,400 | 4,506 | Mar 2026 |
| 255 | muni.cz | 8.51/10 | 1,300 | 919 | Oct 2025 |
| 256 | paddle.com | 8.50/10 | 59,200 | 12,994 | Jan 2024 |
| 257 | replit.com | 8.50/10 | 91,100 | 17,073 | Jun 2026 |
| 258 | hpe.com | 8.50/10 | 245,000 | 37,402 | Dec 2024 |
| 259 | kinsta.com | 8.50/10 | 378,200 | 65,287 | Jul 2024 |
| 260 | asus.com | 8.50/10 | 1,078,400 | 375,127 | Oct 2025 |
| 261 | iom.int | 8.50/10 | 59,900 | 29,608 | Jul 2021 |
| 262 | syr.edu | 8.50/10 | - | - | Aug 2024 |
| 263 | britishcouncil.org | 8.50/10 | 20,900 | 11,121 | Nov 2020 |
| 264 | asm.org | 8.50/10 | 129,500 | 27,778 | Jul 2022 |
| 265 | umontreal.ca | 8.50/10 | 3,700 | 761 | Jun 2026 |
| 266 | miami.edu | 8.50/10 | 5 | 13 | Jun 2020 |
| 267 | papyrus-uk.org | 8.49/10 | 5,500 | 1,676 | Feb 2026 |
| 268 | hostingersite.com | 8.49/10 | - | - | May 2025 |
| 269 | datadoghq.com | 8.49/10 | 40,500 | 17,617 | Dec 2024 |
| 270 | vlaanderen.be | 8.49/10 | 7,000 | 3,242 | Apr 2020 |
| 271 | uni-goettingen.de | 8.49/10 | 6,400 | 3,874 | Jul 2021 |
| 272 | uni-tuebingen.de | 8.49/10 | 2,900 | 2,712 | Jul 2024 |
| 273 | sapo.pt | 8.49/10 | 10,100 | 29,601 | Apr 2022 |
| 274 | uc.edu | 8.49/10 | 425,800 | 91,985 | Mar 2025 |
| 275 | digital.go.jp | 8.49/10 | 740 | 969 | Nov 2022 |
| 276 | fsc.org | 8.48/10 | 80,600 | 9,873 | Jan 2022 |
| 277 | ozon.ru | 8.47/10 | 17,300 | 67,642 | Oct 2022 |
| 278 | godaddysites.com | 8.47/10 | - | - | Dec 2020 |
| 279 | ford.com | 8.47/10 | 4,999,200 | 722,499 | Mar 2020 |
| 280 | gva.es | 8.47/10 | 490 | 1,924 | Nov 2019 |
| 281 | unil.ch | 8.47/10 | 2,600 | 1,615 | Dec 2020 |
| 282 | de.com | 8.46/10 | - | 2 | Aug 2022 |
| 283 | uni-bonn.de | 8.46/10 | 4,100 | 2,235 | Sep 2023 |
| 284 | razorpay.com | 8.45/10 | 19,600 | 23,099 | May 2024 |
| 285 | inews.co.uk | 8.45/10 | 82,500 | 98,450 | Aug 2022 |
| 286 | rozhlas.cz | 8.45/10 | 86 | 9 | Jun 2023 |
| 287 | adelaide.edu.au | 8.45/10 | 47,400 | 19,273 | Jun 2020 |
| 288 | quantcast.com | 8.44/10 | 1,400 | 420 | Dec 2023 |
| 289 | michelin.com | 8.44/10 | 13,600 | 2,981 | Jan 2023 |
| 290 | laposte.fr | 8.44/10 | 16,300 | 4,767 | Sep 2025 |
| 291 | ulaval.ca | 8.44/10 | 2,800 | 1,607 | Jun 2026 |
| 292 | caf.fr | 8.44/10 | 1,900 | 2,371 | Jan 2022 |
| 293 | uh.edu | 8.44/10 | 390,700 | 110,894 | Apr 2024 |
| 294 | x.ai | 8.43/10 | 115,100 | 10,935 | Mar 2025 |
| 295 | synthesia.io | 8.43/10 | 23,600 | 20,717 | Jan 2025 |
| 296 | uni-muenster.de | 8.43/10 | 9,000 | 4,657 | Aug 2022 |
| 297 | us.es | 8.43/10 | 1,400 | 3,306 | Jul 2019 |
| 298 | splunk.com | 8.42/10 | 133,200 | 36,907 | Mar 2024 |
| 299 | gamma.app | 8.42/10 | 80,100 | 17,470 | Nov 2025 |
| 300 | ugent.be | 8.42/10 | 3,800 | 3,554 | Jun 2020 |
Open Page Rank is the domain's authority score (0 to 10, from the open web link graph); the list is ordered by it and covers sites seen in recent crawls. Visits and keywords are estimated US organic search figures.
Download top 10,000 as CSV (zip) →