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OpenGPEX icon

OpenGPEX

OpenGPEX is a next-generation browser-based image editor built for professionals who care about privacy and performance.

OpenGPEX editor workspace with a multi-layer composition featuring AI-generated content. Left panel shows layer stack and real-time adjustments (Brightness, Contrast, Saturation, etc.). Right panel displays AI generation metadata, prompt, seed, and export options. Bottom dock enables quick multi-document navigation. Runs entirely in the browser — no install, no upload.

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  • Self-Hosted
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Photos & Graphics, System & Hardware

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OpenGPEX was added to AlternativeTo by only1onely on and this page was last updated .

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What is OpenGPEX?

OpenGPEX is a next-generation browser-based image editor built for professionals who care about privacy and performance.

Core features: • AI tools running entirely client-side (WebGPU/WASM) — background removal, 4x upscaling, semantic segmentation (SAM 2.1), and AI inpainting. Your images never leave your browser. • Display P3 wide gamut + linear-light compositing for physically correct color blending • RAW format support (CR2, NEF, ARW, DNG...) + 1TIFF export • TIFF format support • 60fps smooth UI with zero main-thread pixel computation • ComfyUI Bridge — connect to your ComfyUI service and run any AI workflow • Professional adjustment tools: Curves, Levels, Channel Mixer, Color Balance, Channel View • Layer system with 16+ blend modes (including HSL modes) • Fully open source (GPL-3.0), no signup required