What is a GIF?

A GIF file stores up to 8 bits per pixel, so each image can reference a palette of up to 256 colors chosen from the 24-bit RGB color space. That small palette is why the format suits simple images, such as graphics or logos, better than photographs.

A GIF can also hold multiple images and play them in sequence, like a flipbook, to create a short animation.

File size and image quality

A simple static GIF is a small file because of its limited palette, so it loads fast. Animated GIFs are the opposite: storing every frame as an image makes them huge, and Google recommends converting them to MP4 or WebM video instead. In web.dev’s example, a 3.7 MB GIF became a 551 KB MP4.

GIFs use lossless LZW compression: the encoded pixel data decodes back exactly as it was stored, so copying, serving, or re-compressing a GIF never degrades it. That guarantee stops at the file itself. Opening a GIF in an editor and re-exporting it can rebuild the color palette, which may shift colors or introduce banding.

Converting a full-color photo to GIF loses quality too, because mapping every pixel to a 256-color palette discards color detail permanently, and gradients come out with visible banding or dithering. The limitation is color range, not resolution. GIF dimensions can reach 64K × 64K pixels, far beyond any screen.

Whatever format you choose, resize and compress images before they go live. Our guide to optimizing images for the modern web walks through the tools and the file-size budgets.

GIF vs. PNG, JPEG, SVG, and WebP

Match the format to the job:

• PNG for static graphics, logos, and screenshots, and whenever you need smooth partial transparency.
• JPEG for photographs, where a wide color range matters more than sharp edges.
• SVG for logos and icons that must stay sharp at every size.
• GIF only for short, simple animations where universal compatibility matters more than file size.
• Animated WebP or MP4 for anything longer or full-color; both are dramatically smaller than a GIF.

One caution for anything that moves: an animated GIF starts playing on its own, and browsers generally give readers no built-in way to pause it. The Web Content Accessibility Guidelines require a mechanism to pause, stop, or hide moving content that starts automatically, lasts more than 5 seconds, and appears alongside other content (success criterion 2.2.2, "Pause, Stop, Hide"). When visitors need that control, use a video player with controls instead of a GIF.

Why modern sites convert GIFs to video

Animated WebP, AVIF, and MP4 or WebM video deliver the same short-loop effect at a fraction of a GIF’s size, which is why platforms like Imgur serve real video where you’d expect a GIF. The format survives because it works everywhere, with no player and no extra markup. If you run your own site, convert animations before you publish: our guide to modern image formats shows how WebP and AVIF handle animations with smaller, faster files.

How to make a GIF

In Photoshop, import your frames as layers, create a frame animation, and export the result for the web as a .gif. No Photoshop? Free online converters such as Ezgif turn short video clips into GIFs right in the browser.