Websites Powered by PDF.js
85,091 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
Jun 2020
Oct 2022
Sep 2024
Sep 2026
Domains observed using PDF.js in each month's HTTP Archive crawl,
Jun 2018 to Sep 2026 · peak 35,520 in Aug 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 47,176 PDF.js sites with Chrome UX data, p75 values, Sep 2026.
Top countries
United States
15,609
India
10,085
United Kingdom
6,618
Germany
6,445
Brazil
6,038
France
5,813
Canada
5,369
Spain
4,970
Sites using PDF.js by audience country, Chrome UX Report.
Usage by industry
| Industry | Share | Websites |
|---|---|---|
| Education | 3.79% | 1,891 |
| Government | 1.89% | 152 |
| Finance and insurance | 1.20% | 199 |
| Software and apps | 0.97% | 1,130 |
| Pets and animals | 0.69% | 19 |
| Arts and entertainment | 0.49% | 202 |
| Non-profit and religious | 0.31% | 24 |
| Sports and fitness | 0.28% | 47 |
| News and media | 0.26% | 111 |
| Professional services | 0.24% | 100 |
| Healthcare | 0.23% | 247 |
| Restaurants and food | 0.21% | 288 |
Share of each industry's websites with a detected stack that use PDF.js; industries come from what sites declare in their own structured data.
Top sites by authority
9+
12% · 44 of 372 sites
8+
8% · 601 of 7,677 sites
7+
4% · 1,734 of 45,712 sites
6+
3% · 2,781 of 110,136 sites
5+
2% · 4,058 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 |
|---|---|---|---|---|---|
| 1 | europa.eu | 9.57/10 | 42,200 | 31,835 | Jun 2022 |
| 2 | cloudfront.net | 9.47/10 | - | - | Dec 2020 |
| 3 | amazon.com | 9.47/10 | 343,823,400 | 25,932,389 | Aug 2022 |
| 4 | nih.gov | 9.44/10 | 298,300 | 34,546 | Sep 2021 |
| 5 | github.io | 9.43/10 | 1,800 | 1 | Dec 2022 |
| 6 | blogspot.com | 9.39/10 | - | - | Sep 2020 |
| 7 | baidu.com | 9.33/10 | 27,100 | 321 | Nov 2021 |
| 8 | harvard.edu | 9.24/10 | 472,700 | 11,444 | Sep 2019 |
| 9 | line.me | 9.23/10 | 57,900 | 397 | Sep 2021 |
| 10 | ca.gov | 9.23/10 | 1,455,600 | 26,086 | Aug 2018 |
| 11 | hubspot.com | 9.22/10 | 227,700 | 38,631 | May 2025 |
| 12 | un.org | 9.21/10 | 2,209,200 | 439,253 | Aug 2018 |
| 13 | mit.edu | 9.18/10 | 163,800 | 31,239 | Aug 2022 |
| 14 | admin.ch | 9.18/10 | 4,200 | 753 | Aug 2022 |
| 15 | cnn.com | 9.16/10 | 15,758,100 | 2,569,749 | Dec 2025 |
| 16 | nasa.gov | 9.15/10 | 2,697,400 | 289,920 | Jan 2026 |
| 17 | pages.dev | 9.14/10 | - | - | Dec 2023 |
| 18 | usda.gov | 9.14/10 | 474,600 | 136,928 | Dec 2022 |
| 19 | jotform.com | 9.13/10 | 344,700 | 111,623 | Sep 2026 |
| 20 | myshopify.com | 9.12/10 | - | - | Sep 2020 |
| 21 | bloomberg.com | 9.12/10 | 5,922,000 | 1,245,801 | Aug 2018 |
| 22 | rakuten.co.jp | 9.11/10 | 9,200 | 1,689 | Mar 2020 |
| 23 | berkeley.edu | 9.10/10 | 166,700 | 4,721 | Apr 2020 |
| 24 | cornell.edu | 9.10/10 | 140,600 | 19,190 | Jul 2021 |
| 25 | weforum.org | 9.08/10 | 863,600 | 203,316 | Mar 2020 |
| 26 | wired.com | 9.07/10 | 2,529,800 | 1,048,674 | Mar 2023 |
| 27 | noaa.gov | 9.07/10 | 1,233,000 | 125,205 | May 2023 |
| 28 | acm.org | 9.05/10 | 24,100 | 17,765 | Jan 2025 |
| 29 | vercel.app | 9.05/10 | - | - | Sep 2021 |
| 30 | windows.net | 9.04/10 | - | - | Dec 2022 |
| 31 | deloitte.com | 9.04/10 | 390,500 | 132,462 | Jun 2026 |
| 32 | mayoclinic.org | 9.04/10 | 60,718,700 | 3,415,662 | Feb 2026 |
| 33 | ny.gov | 9.04/10 | 675,900 | 50,004 | Feb 2023 |
| 34 | dhs.gov | 9.02/10 | 1,491,300 | 252,017 | Aug 2023 |
| 35 | ieee.org | 9.02/10 | 37,200 | 20,161 | Jul 2021 |
| 36 | independent.co.uk | 9.02/10 | 269,400 | 181,138 | Aug 2022 |
| 37 | leadconnectorhq.com | 9.01/10 | 220 | 108 | Jan 2026 |
| 38 | netlify.app | 9.01/10 | 2 | 2 | Jun 2020 |
| 39 | ted.com | 9.01/10 | 387,900 | 80,293 | May 2024 |
| 40 | psu.edu | 9.01/10 | 580,400 | 80,390 | Aug 2022 |
| 41 | umich.edu | 9.01/10 | 36,500 | 1,974 | Jan 2023 |
| 42 | uk.com | 9.00/10 | 2 | 12 | Jul 2021 |
| 43 | upenn.edu | 9.00/10 | 178,900 | 4,794 | Oct 2025 |
| 44 | dol.gov | 9.00/10 | 2,714,100 | 521,202 | Aug 2024 |
| 45 | naver.com | 8.99/10 | 47,500 | 134 | Sep 2021 |
| 46 | archives.gov | 8.99/10 | 3,291,200 | 372,952 | Nov 2022 |
| 47 | mail.ru | 8.98/10 | 1,700 | 37 | Jul 2022 |
| 48 | ohchr.org | 8.98/10 | 379,200 | 109,533 | Apr 2020 |
| 49 | ox.ac.uk | 8.98/10 | 214,200 | 93,016 | Aug 2022 |
| 50 | texas.gov | 8.98/10 | 917,200 | 38,560 | Jul 2021 |
| 51 | samsung.com | 8.96/10 | 5,663,200 | 685,042 | Oct 2024 |
| 52 | umn.edu | 8.96/10 | 78 | 51 | Aug 2018 |
| 53 | nsw.gov.au | 8.95/10 | 75,300 | 73,181 | Aug 2018 |
| 54 | mynavi.jp | 8.95/10 | 81 | 14 | Feb 2025 |
| 55 | usgs.gov | 8.95/10 | 3,088,500 | 314,649 | May 2023 |
| 56 | ethz.ch | 8.95/10 | 12,900 | 11,869 | Dec 2019 |
| 57 | sakura.ne.jp | 8.95/10 | - | - | Mar 2022 |
| 58 | cms.gov | 8.94/10 | 1,852,900 | 454,675 | Aug 2025 |
| 59 | ucla.edu | 8.93/10 | 410,700 | 13,782 | Oct 2021 |
| 60 | jhu.edu | 8.93/10 | 177,300 | 5,821 | Jul 2023 |
| 61 | wa.gov | 8.93/10 | 719,700 | 7,869 | Mar 2020 |
| 62 | bayern.de | 8.92/10 | 12,500 | 512 | Aug 2022 |
| 63 | sciencemag.org | 8.92/10 | 520 | 79 | Feb 2026 |
| 64 | utexas.edu | 8.92/10 | 502,800 | 11,092 | Feb 2020 |
| 65 | gov.ru | 8.91/10 | 2,700 | 216 | Jan 2022 |
| 66 | withgoogle.com | 8.91/10 | - | - | Aug 2026 |
| 67 | aepd.es | 8.91/10 | 810 | 2,021 | Apr 2026 |
| 68 | nyu.edu | 8.90/10 | 674,000 | 142,032 | Apr 2020 |
| 69 | nyc.gov | 8.90/10 | 3,946,700 | 716,970 | Mar 2025 |
| 70 | dot.gov | 8.90/10 | - | - | Jun 2026 |
| 71 | nvidia.com | 8.89/10 | 1,840,400 | 290,399 | Mar 2026 |
| 72 | usc.edu | 8.89/10 | 362,800 | 14,354 | Oct 2023 |
| 73 | azurewebsites.net | 8.87/10 | - | - | Jan 2019 |
| 74 | appspot.com | 8.87/10 | - | - | Jun 2019 |
| 75 | accenture.com | 8.87/10 | 138,800 | 76,754 | Aug 2022 |
| 76 | barnesandnoble.com | 8.87/10 | 5,321,100 | 1,057,739 | Nov 2022 |
| 77 | cam.ac.uk | 8.87/10 | 208,200 | 35,354 | Jan 2019 |
| 78 | intel.com | 8.86/10 | 1,114,400 | 162,353 | Oct 2018 |
| 79 | uspto.gov | 8.86/10 | 753,600 | 77,105 | Aug 2024 |
| 80 | cancer.gov | 8.86/10 | 4,680,800 | 325,886 | May 2022 |
| 81 | parliament.uk | 8.85/10 | 264,200 | 39,936 | Jan 2026 |
| 82 | ilo.org | 8.85/10 | 55,900 | 30,140 | Oct 2020 |
| 83 | acs.org | 8.85/10 | 797,000 | 91,768 | Sep 2022 |
| 84 | intuit.com | 8.84/10 | 806,400 | 28,834 | Jun 2024 |
| 85 | ucsd.edu | 8.84/10 | 48,100 | 2,261 | Oct 2021 |
| 86 | redhat.com | 8.83/10 | 288,100 | 74,088 | Aug 2023 |
| 87 | sap.com | 8.83/10 | 526,000 | 58,757 | Jun 2018 |
| 88 | anthropic.com | 8.83/10 | 159,800 | 72,375 | Jun 2023 |
| 89 | hootsuite.com | 8.83/10 | 90,200 | 24,229 | Oct 2023 |
| 90 | ct.gov | 8.83/10 | 4,800 | 38 | Sep 2025 |
| 91 | ucdavis.edu | 8.83/10 | 381,100 | 81,485 | Sep 2021 |
| 92 | gotowebinar.com | 8.82/10 | - | - | Aug 2018 |
| 93 | ey.com | 8.82/10 | 242,800 | 77,398 | Aug 2022 |
| 94 | aarp.org | 8.82/10 | 1,965,700 | 572,392 | Mar 2023 |
| 95 | asu.edu | 8.82/10 | 144,500 | 3,666 | Jul 2020 |
| 96 | cnrs.fr | 8.82/10 | 4,300 | 2,992 | Apr 2026 |
| 97 | virginia.gov | 8.82/10 | 338,000 | 19,778 | Feb 2023 |
| 98 | it.com | 8.81/10 | - | - | Jun 2025 |
| 99 | perplexity.ai | 8.81/10 | 748,100 | 62,935 | Oct 2025 |
| 100 | rollingstone.com | 8.81/10 | 3,836,000 | 1,103,175 | Jul 2021 |
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) →
Columns: domain, Open Page Rank, first seen, last seen, industry (from the site's own structured data, blank when none).