Stack Lookup
Get a free key

Technology answer

PDF.js

49,700

companies run it, 0.09% of 54,527,857 in the index. Landing 12 Sept 2026.

Hosts: 117,713 live hosts run it, of 191,809,695 hosts in the index, 0.06%. A host is a website, not a company.

Companies by month

Companies, monthly, on the fixed panel of sites crawled since 2020of 54,527,857 in the indexlanding 12 Sept 2026

49,700 at Sept 26; 48,488 twelve months earlier, +1,212, +2.5% on the fixed panel; the series starts January 2021 because the panel is anchored at 31 Dec 2020

The 69 numbers in this chart
MonthCompaniesObserved on the panel
2021-019,0881,831
2021-029,0891,832
2021-039,0891,832
2021-049,0891,832
2021-059,0891,832
2021-069,0891,832
2021-079,0901,832
2021-089,0951,833
2021-099,0981,834
2021-109,1011,834
2021-119,1041,835
2021-129,1101,836
2022-019,1131,837
2022-029,1171,837
2022-039,1221,838
2022-049,1261,839
2022-059,1311,840
2022-069,1361,841
2022-079,1411,842
2022-089,1451,843
2022-099,1461,843
2022-109,1491,844
2022-119,1521,844
2022-129,1531,845
2023-019,1531,845
2023-029,1551,845
2023-039,1571,845
2023-049,8631,988
2023-0510,1472,045
2023-0610,4302,102
2023-0710,7132,159
2023-0810,9972,216
2023-0911,2802,273
2023-1011,5632,330
2023-1111,8462,387
2023-1212,1282,444
2024-0112,4112,501
2024-0212,6962,559
2024-0313,1622,653
2024-0413,5732,735
2024-0513,2782,676
2024-0613,4102,703
2024-0713,5412,729
2024-0813,6852,758
2024-0914,1232,846
2024-1017,0723,441
2024-1119,9294,016
2024-1222,5964,554
2025-0125,6155,162
2025-0228,4735,738
2025-0331,3286,314
2025-0434,1846,889
2025-0536,9187,440
2025-0640,0118,063
2025-0742,9878,663
2025-0845,9989,270
2025-0948,4889,772
2025-1050,67610,213
2025-1150,35310,148
2025-1250,12210,101
2026-0150,11110,099
2026-0250,35410,148
2026-0350,91610,261
2026-0450,99310,277
2026-0550,87010,252
2026-0650,95310,269
2026-0750,53510,184
2026-0850,19710,116
2026-0949,70010,016

Both denominators, and a third

Shares of the same 49,700each row a different wholelanding 12 Sept 2026

Denominator
Companies
Share
companies in the index
54,527,857
0.09%
companies running anything in JavaScript Libraries
40,118,208
0.12%
companies running anything in UI components and widgets
20,523,207
0.24%

Three wholes, three shares of one count: a share travels with its whole, never alone. Against the last of them, PDF.js is rank 45 of 116 technologies in UI components and widgets.

Open as a segment

49,700 companies; add a country, a sector or a band on the segment page. Counting is free.

/companies/tech-pdf-js

Open the segment

Catalogue record

As recorded in the cataloguetaxonomy release tax-2026.10last discovered 10 Sept 2026

PDF.js is a Mozilla-led open-source project that renders PDFs in the browser with JavaScript.

It parses and displays PDF files using HTML5 and JavaScript without requiring external plugins. Developers embed it to add PDF viewing to web apps.

Kindlibrary
VendorMozilla, mozilla.org
Slugpdf-js
Deploymentself-hosted
Pricingfree
Open sourceyes
First discovered2019-10-04
Last discovered2026-09-10
Taxonomy releasetax-2026.10