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Sites built with pdf-lib

Name: pdf-lib adoption among indie product launches
Creator: StackScope

JavaScript library for creating and modifying PDF documents in any browser or runtime.

#153 of 1310 in Javascript Library First seen: May 6, 2026 Last seen: Sep 23, 2026 Website: pdf-lib.js.org

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658 sites

596 found by StackScope, 62 via launch platforms

StackScope Discovery (Indie) 326
StackScope Wider Web 270
Product Hunt 52
Other 9
Hacker News 1

View: All sites All launches Launch platforms StackScope Discovery StackScope Wider Web

Last 7 days 0.0% -0.0pp

Most used with PDF.js, cdnjs, Google Fonts

Top product types Productivity, Developer Tools, Finance

Green hosting 44% vs 46% avg

pdf-lib has been detected on 658 launches we've crawled, with 249 of those in September 2026 (0.0% of the month's launches so far). The 7-day rolling share is 0.0%, roughly steady week on week. Most recent detection: ExactSizeTool, today.

It's most commonly paired with PDF.js, cdnjs, and Google Fonts. By product type, the launches using it are most often Productivity (82%), Developer Tools (5%), and Finance (2%). By domain ending, launches using it are 3.9 times as likely as the average launch to live on a .online domain.

What kind of products ship with pdf-lib

412 launches

Productivity

82.28%

Developer Tools

4.61%

Finance

2.43%

Education

1.94%

E-commerce

1.46%

Health

1.46%

Design

1.21%

Hiring & HR

1.21%

0.73%

Games

0.73%

Content

0.49%

Domain endings using pdf-lib

660 sites

.com 53.33%
.online 10.91%
.app 8.33%
.in 7.88%
.org 2.42%
.net 1.97%
.xyz 1.97%
.io 1.67%
.site 1.67%
.uk 1.36%
.store 1.06%
.space 0.91%
.ca 0.76%
.cloud 0.76%

Country

61 of 658 sites, where we are semi-confident of the country.

India 57.38%
United Kingdom 9.84%
Canada 6.56%
United States 4.92%
Brazil 3.28%
Switzerland 3.28%
Germany 3.28%
Spain 1.64%
France 1.64%
Hong Kong SAR China 1.64%
Japan 1.64%
South Korea 1.64%
Russia 1.64%
South Africa 1.64%

Share of new sites using pdf-lib

Each dot is one launch day. Line is the 7-day rolling average; weekly averages before June 2026. Chart starts at first detection.

0.0%

last 7 days

-0.0pp vs prior week

0.0%

September so far

249 of 1,470,115 sites

658

sites all time

since May 2026

Apr 13, 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%
…
#153	▼37	pdf-lib Current page	0.02%	0.04%

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 #167 in Javascript Library, down from #130 in July. All 1310 in Javascript Library →

Often used with

Tool	Sites
PDF.js	377
cdnjs	374
Google Fonts	335
HTTP/3	314
Cloudflare	302

Tools most often detected on the same sites as pdf-lib.

Recent launches we can show

388 of the 658 sites using pdf-lib are product launches we list individually. The other 270 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