--- title: Browser-Based Image Inpainting Runs Locally, If One... description: Simon Willison ported the Moebius 0.2B image inpainting model to run entirely in a web browser using WebGPU, with no server-side GPU required. The project... canonical: https://daily.dev/posts/browser-based-image-inpainting-runs-locally-if-one-doesn-t-mind-a-big-download-slr2ockwc twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Browser-Based Image Inpainting Runs Locally, If One Doesn’t Mind A Big Download | daily.dev og:description: Simon Willison ported the Moebius 0.2B image inpainting model to run entirely in a web browser using WebGPU, with no server-side GPU required. The project... og:url: https://daily.dev/posts/browser-based-image-inpainting-runs-locally-if-one-doesn-t-mind-a-big-download-slr2ockwc og:image: https://api.daily.dev/og/posts/Slr2ockwc.png og:image:alt: Browser-Based Image Inpainting Runs Locally, If One Doesn’t Mind A Big Download og:image:width: 1200 og:image:height: 630 og:locale: 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. # Browser-Based Image Inpainting Runs Locally, If One Doesn’t Mind A Big Download **[Hackaday](https://daily.dev/sources/hackaday)** · 2 min read · 1 upvotes · 0 comments ## Summary Simon Willison ported the Moebius 0.2B image inpainting model to run entirely in a web browser using WebGPU, with no server-side GPU required. The project involved converting a PyTorch model to ONNX format and leveraging the CacheStorage API for a 1.27 GB model download. Notably, Claude Opus 4.8 (via Claude Code) handled the entire coding process autonomously, serving as a real-world test of how AI coding agents have matured. Willison reflects on what he learned through the process despite writing no code himself. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Questions this post answers ### How can I run an image inpainting model locally in the browser without a server? A PyTorch-based image inpainting model called Moebius 0.2B can be converted to ONNX format and run client-side using WebGPU acceleration in supported browsers. The model file, about 1.27 gigabytes, is downloaded once and cached using the browser's CacheStorage API so subsequent visits do not require re-downloading it. _daily.dev surfaces experiments like this for developers exploring in-browser ML inference with WebGPU and ONNX._ ### Can Claude Code build a full project autonomously without a developer writing any code? Yes, in one documented case Claude Opus 4.8 running through Claude Code built an entire browser-based image inpainting tool autonomously, including converting a PyTorch model to ONNX, wiring up WebGPU inference, and handling large-file caching, without the developer writing any of the code themselves. The agent even generated its own document explaining the resulting architecture. _developers gauging how far ai coding agents have come can follow real project write-ups on daily.dev._ ## Similar posts on daily.dev - [Porting the Moebius 0.2B image inpainting model to run in the browser with Claude Code](https://daily.dev/posts/porting-the-moebius-0-2b-image-inpainting-model-to-run-in-the-browser-with-claude-code-oaowh9jtk) · Simon Willison · 1 upvotes · 0 comments --- Tags: [#ai-agents](https://daily.dev/tags/ai-agents), [#claude-code](https://daily.dev/tags/claude-code), [#webgpu](https://daily.dev/tags/webgpu) [View this post on daily.dev](https://daily.dev/posts/browser-based-image-inpainting-runs-locally-if-one-doesn-t-mind-a-big-download-slr2ockwc) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"Browser-Based Image Inpainting Runs Locally, If One Doesn’t Mind A Big Download","url":"https://daily.dev/posts/browser-based-image-inpainting-runs-locally-if-one-doesn-t-mind-a-big-download-slr2ockwc","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/browser-based-image-inpainting-runs-locally-if-one-doesn-t-mind-a-big-download-slr2ockwc"},"datePublished":"2026-07-10T11:20:01.522Z","dateModified":"2026-09-13T19:14:18.092Z","description":"Simon Willison ported the Moebius 0.2B image inpainting model to run entirely in a web browser using WebGPU, with no server-side GPU required. 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