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About this tool
Compare two images interactively with a draggable before/after slider. Perfect for showcasing edits, restorations, and transformations.
Before/After Slider is a free design tool that runs entirely in your browser — nothing to install, no account to create, and your data never leaves your device. Open the page, add your input, and get a clean, copy-ready result in seconds.
Open Before/After Slider on AltFTool — it loads instantly in your browser.
Upload or drag in the file you want to work with.
Adjust the settings and preview the result.
Download the finished file to your device.
Process images, audio, video, and documents directly in your browser — files never leave your device.
See the result before you export, so the final file is exactly what you expect.
Download output that's ready for your website, presentation, or client hand-off.
Yes — Before/After Slider is completely free on AltFTool, with no signup, no trial limits, and no hidden costs.
Yes. Before/After Slider runs in your browser, so what you enter or upload stays on your device instead of being sent to a server.
Compare two images interactively with a draggable before/after slider. Perfect for showcasing edits, restorations, and transformations. It's built for quick, everyday design tasks with results you can copy or download straight away.
Yes — Before/After Slider works in any modern browser, on desktop, tablet, and mobile, with the same features everywhere.