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Dev.to
7/21/2026
The original title is: "How to Crop PDF Pages in the Browser with Vue 3 and pdf-lib"

The original title is: "How to Crop PDF Pages in the Browser with Vue 3 and pdf-lib"

Original: How to Crop PDF Pages in the Browser with Vue 3 and pdf-lib

Short summary

A technical walkthrough for cropping PDF pages entirely in the browser using Vue 3, pdf-lib, and PDF.js — no server upload required. The article covers setCropBox for visible-area control, canvas-based interactive crop overlays, and practical UX lessons from production users. Code examples include file handling, margin clamping, and visual crop region rendering.

  • •Browser-only PDF cropping with Vue 3 + pdf-lib + PDF.js, no backend needed
  • •Covers setCropBox API, canvas overlays, and margin clamping logic
  • •Includes production UX tips: presets, page-specific settings, scan border removal

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