Building Localable: A GitHub Pages AI App Builder

Adapted from my LinkedIn article: Building Localable - A GitHub Pages AI App Builder.

I wanted to build an AI app builder that does not require backend infrastructure.

That became Localable: a browser-only app builder that you can host for free on GitHub Pages.

• Live app: devidasjadhav.github.io/bootstrap-lovable
• Source: devidasjadhav/bootstrap-lovable

Problem with most app builders #

Most tools in this space depend on:

• paid backend servers
• vendor lock-in
• complex deployment setup
• user data flowing through third-party infra

I wanted the opposite: local-first behavior and simple deployment.

What Localable does #

• runs entirely in browser
• works with OpenAI, Gemini, and DeepSeek
• stores keys in-session (cleared on refresh)
• generates Bootstrap + Vanilla JS apps
• requires no backend service

Build journey highlights #

Week 1: Foundation #

I wired streaming API calls and quickly hit callback integration bugs. Early testing saved me from building on broken flow.

Week 2: Security #

I moved from localStorage to short-lived session handling and added clearer user warnings. Privacy had to be a first-class feature.

Week 3: Incremental updates #

Initial behavior regenerated the full app for tiny changes (for example, changing a button color). I switched to context-aware diffs so updates became targeted and cheaper.

Week 4: UX polish #

Dark-theme inconsistencies and panel usability were rough. I added resize handles, collapsible areas, and better loading feedback.

Current capabilities #

• multi-provider model access
• streaming responses
• sandboxed live preview
• project persistence with IndexedDB
• ZIP export

Key takeaway #

For this class of tool, static architecture is a feature, not a limitation. Browser-only + GitHub Pages can be enough for powerful developer workflows.