The latest articles on DEV Community by bruce huang (@bruce_huang_576f71890f95e). https://dev.to/bruce_huang_576f71890f95e https://media2.dev.to/dynamic/image/width=90,height=90,fit=cover,gravity=auto,format=auto/https:%2F%2Fdev-to-uploads.s3.amazonaws.com%2Fuploads%2Fuser%2Fprofile_image%2F3927315%2F698cd979-50c1-43c6-9140-839ca90496bc.png https://dev.to/bruce_huang_576f71890f95e en bruce huang Tue, 12 May 2026 13:50:24 +0000 https://dev.to/bruce_huang_576f71890f95e/building-a-browser-side-document-comparison-tool-privacy-first-docx-diffing-with-javascript-253e https://dev.to/bruce_huang_576f71890f95e/building-a-browser-side-document-comparison-tool-privacy-first-docx-diffing-with-javascript-253e <p>1、The Problem — Why lawyers overpay for document comparison<br> 2、Architecture — JSZip + LCS paragraph alignment + word-level diff<br> 3、Implementation Details<br> Extracting text from .docx (ZIP → XML → structured paragraphs)<br> Fuzzy paragraph alignment (why LCS isn't enough)<br> Word-level diff rendering (redline format)<br> 4、Performance — 140ms for 20 pages, all client-side<br> 5、Limitations &amp; Next Steps — Formatting changes, tables, PDF<br> <a href="https://media2.dev.to/dynamic/image/width=800%2Cheight=%2Cfit=scale-down%2Cgravity=auto%2Cformat=auto/https%3A%2F%2Fdev-to-uploads.s3.amazonaws.com%2Fuploads%2Farticles%2Fo9423bvxecpfpp7ncdei.png" class="article-body-image-wrapper"><img src="https://media2.dev.to/dynamic/image/width=800%2Cheight=%2Cfit=scale-down%2Cgravity=auto%2Cformat=auto/https%3A%2F%2Fdev-to-uploads.s3.amazonaws.com%2Fuploads%2Farticles%2Fo9423bvxecpfpp7ncdei.png" alt=" " width="800" height="350"></a><br> <a href="https://media2.dev.to/dynamic/image/width=800%2Cheight=%2Cfit=scale-down%2Cgravity=auto%2Cformat=auto/https%3A%2F%2Fdev-to-uploads.s3.amazonaws.com%2Fuploads%2Farticles%2F5662asbh12kahh0i048k.png" class="article-body-image-wrapper"><img src="https://media2.dev.to/dynamic/image/width=800%2Cheight=%2Cfit=scale-down%2Cgravity=auto%2Cformat=auto/https%3A%2F%2Fdev-to-uploads.s3.amazonaws.com%2Fuploads%2Farticles%2F5662asbh12kahh0i048k.png" alt=" " width="800" height="350"></a></p> algorithms javascript privacy showdev