Chrome extension that turns browsing history into a conversational, AI-powered memory layer. Ask natural-language questions about pages you already visited, recover research trails by fuzzy memory instead of exact keywords, and revisit prior work through a privacy-aware stack that combines on-device Rust/WebAssembly processing with a serverless Go backend.
Chromium History Chat is a Manifest V3 Chrome extension that lets you ask natural-language questions about pages you have already visited. History is processed client-side with Rust compiled to WebAssembly, then paired with a Google Cloud Function written in Go that handles OpenAI requests, rate limiting, and credential management so users can query their browsing history without having to manage backend infrastructure themselves.
Chrome Extension (Manifest V3), Rust to WebAssembly, Dart compiled to JavaScript for UI and service worker, Go (Google Cloud Functions Gen 2), Google Secret Manager, OpenAI GPT-4o-mini, HTTPS-only transport.
Published on the Chrome Web Store with a public GitHub repository, a dedicated privacy policy route, and a portfolio post that documents both the product story and the architecture behind it.
The sections below cover Product, Client architecture, and Backend + AI.
Chromium History Chat lets you have a real conversation with your browsing history. Instead of trying to remember the right keyword, digging through hundreds of old tabs, or scrolling endlessly through the default history page, you can ask a question in plain English and get a helpful answer backed by the pages you actually visited. You do not have to remember exact URLs, page titles, or search queries. If you can describe what you were doing or what you remember from the page, Chromium History Chat can help you find it again.
The default History view treats your prior browsing as a simple timestamped list. Chromium History Chat upgrades that into something closer to a searchable, conversational memory, so instead of thinking "I know I saw this somewhere..." you can think "past me already researched this; let me ask what I found."
This extension is specifically designed to work with your browsing history, so it needs permission to read history entries. Without that access, there is nothing to chat with. The permission exists so the product can understand which pages you visited, organize them into a reusable index, and answer questions grounded in your own browsing rather than generic web search.
This project demonstrates a full vertical slice: browser-native UX, semantic recall over real user history, WASM performance on-device, and a production-shaped serverless backend with rate limits and secret management. It is a practical answer to "I know I saw this somewhere" without asking users to change how they browse.
Shipping a Chrome Web Store extension with Rust/WASM, a Go Cloud Function, and a clear privacy story shows end-to-end ownership across client performance, cloud operations, and AI product design. It is not a single-stack toy demo; it is a product-shaped implementation with an actual distribution channel, explicit permissions narrative, and a real user workflow.
