What “reduce file size” means here
You are lowering how many bytes the image uses—usually by lossy compression or by switching to a more efficient format like WebP. This tool keeps previews honest so you see the trade-off.
- Works entirely in your browser after the page loads
- Switch formats when your destination allows WebP
Related entry point
Prefer the broader guide and FAQ layout? Visit /image-compress for the same engine with the default long-form article.
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