The latest articles on DEV Community by Perry (@browseralchemist). https://dev.to/browseralchemist 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%2F3894995%2F1382205c-c727-4fb3-96b8-38695203d612.jpg https://dev.to/browseralchemist en Perry Thu, 23 Apr 2026 23:42:45 +0000 https://dev.to/browseralchemist/what-i-learned-building-a-browser-based-file-converter-1oce https://dev.to/browseralchemist/what-i-learned-building-a-browser-based-file-converter-1oce <p>When I started building a file conversion tool, I thought it would be simple:</p> <p>Upload file → convert file → download file.</p> <p>Done.</p> <p>Turns out file formats are full of surprises.</p> <p>A few things I learned:</p> <p>• “Converting” often means transforming structure, not just changing an extension.</p> <p>• Compression can be lossy or lossless, and that tradeoff matters more than I realized.</p> <p>• Browser-side processing can solve privacy concerns for users who don’t want files stored on servers.</p> <p>• Tiny usability choices (drag/drop, batch processing, speed) matter as much as the conversion itself.</p> <p>Building this made me appreciate how much invisible engineering hides behind “simple” tools.</p> <p>I’m still learning, but it has been fun building something useful.</p> <p>I put what I’ve learned into a free tool I’ve been working on here:<br> <a href="https://qualityconverter.com/" rel="noopener noreferrer">https://qualityconverter.com/</a></p> <p>Curious? If you’ve built utility tools, what surprised you most?</p> webdev programming productivity buildinpublic