# What changed in @signpdf/placeholder-pdf-lib

> 2 changes in @signpdf/placeholder-pdf-lib 3 to 4 from its official release notes, upgrade guides and advisories: 1 breaking. Each one cited. Sources checked 2026-10-27. HTML: https://unstale.sh/npm/@signpdf/placeholder-pdf-lib/

To see which of these apply to a repository, run `npx @unstale/cli init` in it.

## @signpdf/placeholder-pdf-lib 4

### Breaking changes

- The minimum supported Node.js version is now 22 across all seven public @signpdf packages; applications needing older versions can continue using 3.4.0. (4.0.0) — [release notes](https://github.com/vbuch/node-signpdf/releases/tag/v4.0.0)

## @signpdf/placeholder-pdf-lib 3

### Fixes and other changes

- PDF-LIB now preserves Unicode signature metadata. (3.4.0) — [release notes](https://github.com/vbuch/node-signpdf/releases/tag/v3.4.0)