YouTube Data Exporter

This project is a SvelteKit frontend for exporting historical YouTube performance data as CSV. It fetches the history for a YouTube channel or video, visualizes the selected metrics, and lets you download or copy the transformed dataset.

The app currently supports the vidiq source and works with two resource types:

• channel exports channel history such as subscribers, views, and video counts
• video exports video history such as views, likes, and comments

What The App Does

• Requests export data from GET /api/:site/:type/:id
• Displays the returned time-series data in charts
• Builds CSV exports from the fetched snapshots
• Supports multiple export granularities: all, hourly, daily, weekly, and monthly
• Can transpose CSV output so metrics become rows instead of columns
• Can interpolate missing periods when generating aggregated exports

API Response Docs

The response contract for the upstream export API is documented in API_RESPONSE.md.

Local Development

Install dependencies:

pnpm install

Start the dev server:

PUBLIC_API_BASE_URL=https://your-api-host.example.com pnpm dev

Open the app and provide:

• a source, currently vidiq
• a resource type: channel or video
• the target YouTube channel ID or video ID

PUBLIC_API_BASE_URL must point to the upstream host that serves /api/:site/:type/:id.

Available Scripts

pnpm dev
pnpm build
pnpm preview
pnpm check
pnpm lint
pnpm format

Build

Create a production build with:

pnpm build

Preview the production output locally with:

pnpm preview