# Helvety Image Upscaler

> Helvety Image Upscaler upscales PNG/JPEG/WebP in the browser. The Real-ESRGAN AI model runs inside a Web Worker via onnxruntime-web (WebGPU with WASM fallback); weights download lazily on first AI run and cache locally via the Cache API. A high-quality canvas-resample fallback is used automatically when WebAssembly is unavailable. Choose 2×/4× or target width/height, batch up to five files, per-image animated processing status, PNG export; no image upload to Helvety servers. Output dimensions are capped when needed to fit each browser’s canvas limits (especially relevant on mobile Safari). MIT-licensed, Swiss-built.

## Canonical URL
- [Helvety Image Upscaler](https://helvety.com/image-upscaler): Main application route

## Crawling And Indexing
- The public image upscaler route is intended to be crawlable and indexable.

## Related Helvety Apps
- [Helvety](https://helvety.com)
- [Helvety Store](https://helvety.com/store)
- [Helvety PDF](https://helvety.com/pdf)
- [Helvety Auth](https://helvety.com/auth)
- [Helvety Contacts](https://helvety.com/contacts)
- [Helvety Notes](https://helvety.com/notes)
- [Helvety Tasks](https://helvety.com/tasks)

## Source
- [GitHub Repository](https://github.com/CasparRubin/helvety): Open-source monorepo for helvety.com web applications and shared packages (MIT)