Sightline - Catch visual accessibility risks before export

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A local-first visual preflight tool for design exports—preview small screens, simulate color-vision differences, flag risk areas, sample contrast, and export a lightweight review record. Images stay in your browser.

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Hi Product Hunt! Sightline helps designers catch visual accessibility risks before a design leaves the canvas. Drop in a poster, social graphic, or UI screenshot to preview small screens, grayscale, color-vision simulations, and contrast risks. Everything runs locally in the browser: your images are not uploaded. It is an early open-source alpha. I would love feedback from designers and developers using real exported images.