Generate a descriptive alt text caption for any image using on-device AI. Free, private — great for SEO and accessibility.
About the AI Alt Text Generator Tool
Runs an image-captioning AI model directly in your browser to describe what's in a photo, giving you a starting point for accessible, SEO-friendly alt text without sending the image anywhere.
100% Private — Processed in Your Browser
Every file stays on your device. DCPIXEL processes images entirely using the browser's built-in Canvas API and WebAssembly — zero server uploads, zero data collection.
Premium Features & Batch Processing
Get started with our free tier for single-file operations. Upgrade to DCPixel PRO to unlock high-speed batch processing, local AI background removal, and advanced PDF controls.
Frequently Asked Questions
Is the generated caption always accurate?+
No — like any AI model, it can miss specific details, names, or brands. Always review and edit the suggested text before publishing.
Does the image get uploaded anywhere?+
No. The captioning model runs entirely in your browser — your image never leaves your device.
User Reviews
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