--- title: "Introducing PDF Diff: Compare PDFs Privately in Your Browser" url: https://daily.dev/posts/introducing-pdf-diff-compare-pdfs-privately-in-your-browser-373btkoev source_url: https://montemagno.com/introducing-pdf-diff-compare-pdfs-privately-in-your-browser/ type: article source: "James Montemagno" published: 2025-12-31T15:37:47.777Z updated: 2025-12-31T15:38:09.182Z tags: ["webdev", "javascript", "react", "github", "typescript"] reading_time: 7 upvotes: 18 comments: 0 language: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # Introducing PDF Diff: Compare PDFs Privately in Your Browser **[James Montemagno](https://daily.dev/sources/montemagno)** · 7 min read · 18 upvotes · 0 comments ## Summary PDF Diff is a privacy-first, client-side tool for comparing PDF documents entirely in the browser. It offers five view modes (side-by-side, unified, additions only, removals only, changes only), real-time statistics, multi-page support, PDF export, and dark mode. Built with React 19, TypeScript, Vite, PDF.js, and jsPDF, the tool processes everything locally without server uploads. The open-source project demonstrates modern web capabilities and was developed using VS Code with GitHub Copilot assistance. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Similar posts on daily.dev - [merge-pdf.app - A free, privacy-first PDF Merging tool](https://daily.dev/posts/merge-pdf-app---a-free-privacy-first-pdf-merging-tool-mxqgapwxl) · We Are .NET · 1 upvotes · 0 comments --- Tags: [#webdev](https://daily.dev/tags/webdev), [#javascript](https://daily.dev/tags/javascript), [#react](https://daily.dev/tags/react), [#github](https://daily.dev/tags/github), [#typescript](https://daily.dev/tags/typescript) [View this post on daily.dev](https://daily.dev/posts/introducing-pdf-diff-compare-pdfs-privately-in-your-browser-373btkoev)