pdf-lib on new websites

1. pdf-lib appeared on about 450 new sites in the last 30 days.^[1]
2. Six in ten new pdf-lib sites also use PDF.js.
3. It is unusually common among productivity launches: 80%, against 13% across new sites.

The line is the 7-day average share of new sites that use pdf-lib, since 10 September.

#	Movement	Tool	Share of all sites	Share of category[4]	Bar
1	–	jQuery	14.1%	34.5%
2	–	React Router	6.6%	16.2%
3	–	Motion	6.0%	14.6%
4	–	TanStack Router	4.4%	10.8%
5	–	Swiper	3.4%	8.3%
…
148	▲14	pdf-lib	<0.1%	<0.1%

All-time shares across the new sites we track: of all of them, and of the sites using any Javascript Library tool. Among September launches it ranked #153 in Javascript Library, up from #167 in August. All 1551 in Javascript Library

Tool	Sites with both	vs all new sites	Bar
JSZip	368	690x
PDF.js	625	310x
cdnjs	568	11x
jsDelivr	387	7.7x

Tools that turn up far more often on pdf-lib sites than on new sites in general, and how many times as common each one is there.

659 of the 1,141 sites using pdf-lib are product launches we list individually. The other 482 are new business and personal sites: they count towards the figures above but are not listed here. A watch sends them to you.

Site	Found	Also detected
GOODPIPE | Field tools for inspection teams goodpipe.app	Oct 19
DocMask powered by 10X Tax Pro docmask.online · Finance	Oct 19
Footprint Trace footprinttrace.com	Oct 19
Wrap Riot — Put their face on the wrapping paper wrap-riot.co.uk · United Kingdom	Oct 19
Logbook66 logbook66.com · Spain	Oct 19
PaperScorer: Submit a Paper paperscorer-ai.com · Productivity	Oct 19
Quick File: convert files privately quick-file.co · Productivity	Oct 19
PrintSheet — Resize Images & Print Multiple Images on One Page printsheet.app	Oct 19
DocuShrink • Free Online PDF & Image Converter, Compressor & OCR docushrink.org · Productivity	Oct 19
وَرَق PDF — تعديل وتحويل ودمج PDF مجاناً waraq.live · Productivity	Oct 19
ConvertMango — Everyday files, freshly converted convertmango.com · Productivity	Oct 19
QuickPDF – Free Online PDF Converter qvickpdf.com · Productivity	Oct 19

Showing the most recent 12 of 659.

Watches, exports and the API give you all 1,141 sites using pdf-lib, from £15 a month.

1. These figures cover websites that went live since April 2026, not the web as a whole.
2. Country comes from what each site says about itself, such as a company registration, legal terms or a phone number, not just its domain ending. Too few sites state their country plainly for the usual count, so this one also counts single signals: a country domain ending, a phone number (for North America, its area code), a location the site declares in its own page metadata, or a country-specific vendor stack and the page language where they agree and nothing contradicts them. Read these as likely rather than certain.
3. Green hosting is the share whose web host The Green Web Foundation lists as running on green energy, among sites checked since 1 April 2026, against the same share for every new site we checked over that time. Data from The Green Web Foundation.
4. Some products people expect to see here are filed under a related category: UI Library.