● live2026CASE STUDY 03 / 07

Pixlyzer

Professional media suite — image tools, PDF manipulation, and AI upscaling.

FastAPIPythonReactReact NativeReplicate AISQLite

18

Tools

2

Processing modes

4x

AI upscale

3

HEIC decode fallbacks

pixlyzer.com
Pixlyzer screenshot

01 / The problem

Most "free" online image and PDF tools upload every file to a server, even for a plain crop or compress — unnecessary exposure for anything even slightly private.

02 / The approach

Built a dual-mode engine: WASM-powered processing (mupdf, jSquash, libheif) runs entirely in the browser by default, escalating to the FastAPI backend only for the handful of operations — LibreOffice conversions, GPU-based AI models — that have no viable browser equivalent.

03 / The catch

Some formats need real fallback chains, not just a toggle: HEIC decoding alone runs three stages — native createImageBitmap, then libheif-js WASM for 10-bit/HDR, then heic2any — before giving up.

Professional-grade media processing suite with a React frontend and FastAPI backend. Handles image manipulation, PDF tools, AI-powered upscaling via Real-ESRGAN, and background removal via Rembg — all processed with cloud GPU via the Replicate API. Includes a companion React Native mobile app. Features an AMOLED dark theme with custom Tailwind tokens.

Highlights

18 tools across image, PDF, and AI processing

Nothing uploads unless the operation genuinely requires a server (LibreOffice, GPU models)

4x AI upscaling and background removal via Replicate; Claude-generated alt text with 5 tone presets

Companion React Native mobile app

Gallery

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