Converting PNG to GIF reduces the image to a 256-color palette. For icons, simple illustrations, or flat-color graphics the result can be nearly identical to the PNG at a smaller file size. For photos or gradient-heavy images it looks noticeably worse.
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The 256-color limit is the key constraint. Flat-color content (logos, pixel art, UI) handles the palette reduction gracefully; photos develop visible banding and blotchiness. Alpha is reduced to a single binary transparent color, so soft edges become hard-edged.
GIF plays on every browser, email client, image viewer, and platform ever made. Compatibility is a non-issue.
PNG is a lossless image format designed to replace GIF. It uses DEFLATE compression, supports an 8-bit alpha channel for full transparency, and preserves every pixel exactly. PNG excels at images with sharp edges, large flat-color regions, text, UI screenshots, and anything you'll re-edit.
GIF is a 1987 format limited to a 256-color palette. Its lasting relevance is support for simple animation, which kept it in the meme ecosystem after PNG replaced it for static images. GIF compression is lossless within its palette constraints but usually worse than PNG for the same image.
No. GIF has only binary transparency: a pixel is either fully opaque or fully transparent. Soft edges become jagged, and anti-aliased edges may show color fringing.
Possibly. GIF reduces the image to 256 colors. If your PNG has more than that (most photographs and gradients do), the encoder must pick which colors to keep and optionally dither the rest.
PNG is a lossless image format designed to replace GIF. It uses DEFLATE compression, supports an 8-bit alpha channel for full transparency, and preserves every pixel exactly. PNG excels at images with sharp edges, large flat-color regions, text, UI screenshots, and anything you'll re-edit.
GIF is a 1987 format limited to a 256-color palette. Its lasting relevance is support for simple animation, which kept it in the meme ecosystem after PNG replaced it for static images. GIF compression is lossless within its palette constraints but usually worse than PNG for the same image.
Yes. The converter runs entirely in your browser using WebAssembly. Your images are never uploaded, never sent to a server, and never leave your device.
There's no hard limit, but because everything runs in your browser you're bounded by available memory. Very large images (over a few hundred megapixels) can hit browser memory limits. Process in smaller batches if you run into issues.