The latest articles on DEV Community by aiportrait (@aiportrait_58b6147a9ba20f). https://dev.to/aiportrait_58b6147a9ba20f 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%2F2588891%2F2d0733d4-96c7-4d00-8f03-3582e2c73a35.png https://dev.to/aiportrait_58b6147a9ba20f en aiportrait Sat, 30 May 2026 15:30:51 +0000 https://dev.to/aiportrait_58b6147a9ba20f/show-hn-ai-upscaler-free-no-signup-image-enhancer-up-to-4x-with-strict-privacy-1326 https://dev.to/aiportrait_58b6147a9ba20f/show-hn-ai-upscaler-free-no-signup-image-enhancer-up-to-4x-with-strict-privacy-1326 <p>Hi HN,</p> <p>I built <a href="https://aiupscaler.org" rel="noopener noreferrer">AI Upscaler</a> , a free online tool to enhance and upscale images up to 4x without losing quality.</p> <p>There are plenty of upscalers out there, but many are locked behind heavy paywalls, require annoying sign-ups, or have questionable privacy policies. I wanted to build something fast, accessible, and respectful of user data.</p> <p>Key Features:</p> <p>No Sign-up / Free: You can use it instantly without creating an account.</p> <p>Privacy-First: All uploaded images are processed via HTTPS and automatically deleted from our servers after 60 minutes. We have a strict zero-training policy (your images will never be used to train models).</p> <p>Multiple AI Models: Optimized for different use cases including Balanced, Pro, Graphics, and text enhancement.</p> <p>Face &amp; Old Photo Restoration: Built-in face enhancement to fix blurry portraits or vintage photos.</p> <p>It supports PNG, JPG, and WebP up to 10MB.</p> <p>I would love to get your feedback on the upscaling quality, processing speed, and UI/UX. What other specific models or features (e.g., batch processing) would you like to see next?</p> <p>Thanks!</p> ai machinelearning privacy showdev