SMRTR ProgrammingMay 19, 2026Daily.dev

How to Build a Browser-Based PDF Watermark Tool Using JavaScript

SMRTR summary

Build a fully client-side PDF watermarking tool using JavaScript and the PDF-lib library — no backend required. The tutorial covers uploading PDFs, applying text or image watermarks, controlling opacity and rotation, selecting specific pages, and generating downloadable output entirely in the browser, keeping documents private and processing fast.

SMRTR provides this summary for quick context. The original article belongs to Daily.dev.

Read the original article
SMRTR Programming

Get the next batch of curated summaries in your inbox.

This archive is built from SMRTR newsletter summaries. Subscribe for hand-picked stories without the extra noise.