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Sites built with PDF.js

JavaScript library for rendering PDF documents in the browser.

#48 of 1310 in Javascript Library First seen: Apr 14, 2026 Last seen: Sep 23, 2026 Website: mozilla.github.io
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6,628 sites

6,185 found by StackScope, 443 via launch platforms

StackScope Wider Web 3,968 StackScope Discovery (Indie) 2,217 Product Hunt 368 Other 42 Hacker News 27 PeerPush 6
  • StackScope Wider Web 3,968
  • StackScope Discovery (Indie) 2,217
  • Product Hunt 368
  • Other 42
  • Hacker News 27
  • PeerPush 6
View: All sites All launches Launch platforms StackScope Discovery StackScope Wider Web
Last 7 days 0.1% -0.1pp
Most used with Vite, Google Fonts, HSTS
Top product types Productivity, Education, Finance
Green hosting 46% vs 46% avg

PDF.js has been detected on 6,628 launches we've crawled, with 2215 of those in September 2026 (0.2% of the month's launches so far). The 7-day rolling share is 0.1%, roughly steady week on week. Most recent detection: ExactSizeTool, today.

It's most commonly paired with Vite, Google Fonts, and HSTS. By product type, the launches using it are most often Productivity (38%), Education (15%), and Finance (10%). By estimated origin, the United States leads (42%), ahead of India (21%). By domain ending, launches using it are 1.9 times as likely as the average launch to live on a .online domain.

What kind of products ship with PDF.js

2,813 launches

Productivity
38.14%
Education
15.32%
Finance
10.13%
Hiring & HR
8.64%
Developer Tools
4.94%
Health
4.73%
AI
4.51%
Content
3.45%
Marketing
2.84%
E-commerce
2.42%
Design
2.28%
Games
1.21%
Social
1.17%
Crypto
0.14%
Directory
0.07%

Domain endings using PDF.js

6,631 sites

  • .com 49.03%
  • .app 10.90%
  • .online 5.37%
  • .in 5.05%
  • .nl 3.06%
  • .ai 2.84%
  • .org 2.76%
  • .site 2.13%
  • .xyz 1.92%
  • .net 1.85%
  • .io 1.82%
  • .dev 1.63%
  • .tech 1.39%
  • .me 1.30%
  • .co 1.15%

Country

33 of 6,628 sites, where we are confident of the country.

  • United States United States 42.42%
  • India India 21.21%
  • United Kingdom United Kingdom 6.06%
  • Australia Australia 3.03%
  • Bangladesh Bangladesh 3.03%
  • Canada Canada 3.03%
  • Estonia Estonia 3.03%
  • France France 3.03%
  • Gibraltar Gibraltar 3.03%
  • Hong Kong SAR China Hong Kong SAR China 3.03%
  • Nigeria Nigeria 3.03%
  • Pakistan Pakistan 3.03%
  • Vietnam Vietnam 3.03%

Share of new sites using PDF.js

Each dot is one launch day. Line is the 7-day rolling average; weekly averages before June 2026.

0.1%
last 7 days
-0.1pp vs prior week
0.2%
September so far
2,215 of 1,470,115 sites
6,628
sites all time
since Apr 2026
PDF.js daily detection trend Before 8 July 2026: launch platforms only. We began crawling the wider web on this date, so the cohort this share is measured against changes here. 5% 2% 0% Apr May Jun Jul Aug Sep Jul 1, 2026: Adoption figures now count launches from launch platforms. Use the source view to include StackScope Discovery. Weekly averages before this point, daily after. Jun 25 · 3 / 618 = 0.5% Jun 26 · 2 / 534 = 0.4% Jun 27 · 3 / 431 = 0.7% Jun 28 · 7 / 382 = 1.8% Jun 29 · 6 / 502 = 1.2% Jun 30 · 4 / 801 = 0.5% Jul 1 · 7 / 795 = 0.9% Jul 2 · 4 / 603 = 0.7% Jul 3 · 5 / 499 = 1.0% Jul 4 · 6 / 411 = 1.5% Jul 5 · 6 / 367 = 1.6% Jul 6 · 13 / 551 = 2.4% Jul 7 · 17 / 1186 = 1.4% Jul 8 · 39 / 12595 = 0.3% Jul 9 · 72 / 23778 = 0.3% Jul 10 · 62 / 22594 = 0.3% Jul 11 · 46 / 16067 = 0.3% Jul 12 · 48 / 20361 = 0.2% Jul 13 · 51 / 20999 = 0.2% Jul 14 · 61 / 20496 = 0.3% Jul 15 · 48 / 17331 = 0.3% Jul 16 · 45 / 14340 = 0.3% Jul 17 · 53 / 19814 = 0.3% Jul 18 · 50 / 22796 = 0.2% Jul 19 · 59 / 26362 = 0.2% Jul 20 · 72 / 22795 = 0.3% Jul 21 · 56 / 21757 = 0.3% Jul 22 · 53 / 23335 = 0.2% Jul 23 · 50 / 16956 = 0.3% Jul 24 · 37 / 12944 = 0.3% Jul 25 · 34 / 8986 = 0.4% Jul 26 · 61 / 20047 = 0.3% Jul 27 · 100 / 33969 = 0.3% Jul 28 · 82 / 38372 = 0.2% Jul 29 · 112 / 50261 = 0.2% Jul 30 · 86 / 44091 = 0.2% Jul 31 · 93 / 51300 = 0.2% Aug 1 · 102 / 50701 = 0.2% Aug 2 · 67 / 49899 = 0.1% Aug 3 · 70 / 48412 = 0.1% Aug 4 · 64 / 37486 = 0.2% Aug 5 · 63 / 32809 = 0.2% Aug 6 · 62 / 36714 = 0.2% Aug 7 · 57 / 37955 = 0.2% Aug 8 · 48 / 39824 = 0.1% Aug 9 · 75 / 34408 = 0.2% Aug 10 · 50 / 29081 = 0.2% Aug 11 · 75 / 32232 = 0.2% Aug 12 · 54 / 33750 = 0.2% Aug 13 · 80 / 50317 = 0.2% Aug 14 · 75 / 51683 = 0.1% Aug 15 · 76 / 51758 = 0.1% Aug 16 · 88 / 52091 = 0.2% Aug 17 · 78 / 41724 = 0.2% Aug 18 · 71 / 54222 = 0.1% Aug 19 · 85 / 49707 = 0.2% Aug 20 · 104 / 67215 = 0.2% Aug 21 · 137 / 90842 = 0.2% Aug 22 · 136 / 91941 = 0.1% Aug 23 · 125 / 91067 = 0.1% Aug 24 · 128 / 79541 = 0.2% Aug 25 · 96 / 69649 = 0.1% Aug 26 · 100 / 65607 = 0.2% Aug 27 · 125 / 84082 = 0.1% Aug 28 · 118 / 83993 = 0.1% Aug 29 · 124 / 84819 = 0.1% Aug 30 · 123 / 93342 = 0.1% Aug 31 · 143 / 91074 = 0.2% Sep 1 · 131 / 92711 = 0.1% Sep 2 · 146 / 98911 = 0.1% Sep 3 · 111 / 94025 = 0.1% Sep 4 · 144 / 89871 = 0.2% Sep 5 · 149 / 93822 = 0.2% Sep 6 · 112 / 82477 = 0.1% Sep 7 · 121 / 79414 = 0.2% Sep 8 · 86 / 72640 = 0.1% Sep 9 · 84 / 68826 = 0.1% Sep 10 · 365 / 72907 = 0.5% Sep 11 · 86 / 78263 = 0.1% Sep 12 · 51 / 51615 = 0.1% Sep 13 · 64 / 53857 = 0.1% Sep 14 · 80 / 54058 = 0.1% Sep 15 · 63 / 53552 = 0.1% Sep 16 · 59 / 54189 = 0.1% Sep 17 · 59 / 51997 = 0.1% Sep 18 · 68 / 48384 = 0.1% Sep 19 · 57 / 41257 = 0.1% Sep 20 · 48 / 40789 = 0.1% Sep 21 · 57 / 46524 = 0.1% Sep 22 · 74 / 50026 = 0.1%
Mar 30, 2026 90 days Sep 22, 2026

The shaded part of the chart is measured against a different set of sites. Until 8 July 2026 we only tracked launches from launch platforms; from that date we crawl the wider web as well. The share is a proportion of whatever we were tracking at the time, so it can step at that line without the technology itself changing. For a single continuous measure, switch to launch platforms.

How StackScope detects technologies

⋮ Jul 1, 2026: Adoption figures now count launches from launch platforms. Use the source view to include StackScope Discovery.

Javascript Library leaders

Tool % of launches % of category
#1 – jQuery 14.61% 35.60%
#2 – React Router 6.35% 15.47%
#3 – Motion 5.97% 14.54%
#4 – TanStack Router 4.12% 10.04%
#5 – Swiper 3.74% 9.12%
…
#48 ▼14 PDF.js Current page 0.17% 0.41%

Percentages show adoption among indie launches: the share of all analysed launches, and of launches using any Javascript Library tool.Among August launches it ranked #49 in Javascript Library, down from #35 in July. All 1310 in Javascript Library →

Often used with

Tool Sites
Vite 3,481
Google Fonts 3,394
HSTS 3,256
Tailwind CSS 3,211
Cloudflare 2,912

Tools most often detected on the same sites as PDF.js.

Recent launches we can show

2,660 of the 6,628 sites using PDF.js are product launches we list individually. The other 3,968 are sites we found crawling the wider web: they count towards the figures above, but we do not publish them one by one. How StackScope Discovery works

ExactSizeTool Sep 23, 2026 Productivity Správa o nehode Sep 23, 2026 Afghan Job — Find work across Afghanistan Sep 23, 2026 Hiring & HR Barcode Generator v.1.1.0 Sep 23, 2026 Developer Tools Marvel Pricing System · Keirton Sep 23, 2026 Screenshot of Kasa, a launch using PDF.js Kasa Sep 23, 2026 · score 9.7 India Productivity WazoPDF — PDF tools, beautifully simple Sep 23, 2026 Productivity WallAI — Portfolio Tracker Sep 23, 2026 Finance GammaPro — #1 Tuition Class, Student NFC Attendance & Fee Management System Sri Lanka Sep 22, 2026 Education ForumLoop | Public Engagement From Meeting to Outcome Sep 22, 2026 Social tell your PDF what to do Sep 22, 2026 SnapaPdf: honest PDF tools. No upload, no signup, no limits. Sep 22, 2026 Productivity

Showing the most recent 12 of 2,660.

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