Convert GIF to WebP

Said plainly and first, because it is the one thing that would otherwise be discovered after the download. This conversion produces a still picture from the first frame. Everything after it is dropped.

For a moving GIF the right target is video. Converting GIF to MP4 keeps every frame, plays on every device, and usually comes out at a fraction of the size — a video codec describes what changed between frames, where GIF stores each one almost from scratch. A three-megabyte GIF routinely becomes a two-hundred-kilobyte MP4 that looks better. If you came here with an animation, go there instead.

Nobody chooses GIF for a static image today, and yet sites are full of them: spacers and bullets from a decade-old theme, diagrams exported by software that offered nothing else, screenshots from an era when GIF was the safe choice, logos that have been copied from one redesign to the next since 2009.

They are the images a performance audit finds and nobody has ever looked at. Converting them is uncontroversial precisely because nothing about them is deliberate — the format was an accident of when the file was made.

GIF compresses with LZW, a general-purpose scheme from the 1980s that knows nothing about pictures. WebP was designed for images specifically, twenty-three years later, and applies techniques borrowed from video compression to a single frame.

On a detailed still GIF the result is dramatic — half the size or less is normal, and a photograph that was mistakenly saved as a GIF can lose far more than that. The exception is the very small flat graphic: a two-colour bullet is already close to the floor, and there is nothing left for a better codec to take away.

This is the quality improvement that people notice. GIF transparency is a single bit: each pixel is either completely transparent or completely opaque, with nothing in between. That is why a cut-out GIF logo has stair-stepped edges and a faint fringe of whatever colour it was designed against.

WebP carries a real alpha channel with 256 levels, so edges can fade properly and a mark can sit on any background. The conversion cannot invent smoothness the GIF never had, but it removes the ceiling — and if you re-export the artwork from the original at some point, the WebP will be ready to hold it.

A GIF holds at most 256 colours, chosen when it was created. WebP holds millions, so every one of them fits with room to spare and the conversion has nothing to discard.

What it cannot do is undo the original reduction. If a photograph was flattened to 256 colours in 2011, the banding across the sky is part of the picture now and the WebP will reproduce it faithfully. Converting changes the container and the compression, not the history of the file.

For anything served on a web page, WebP: smaller, better transparency, and supported by every current browser including Safari.

PNG when the file leaves the browser. Email attachments, files handed to a client, images going into other software or an archive — PNG is the one everything opens. Both are lossless enough for this kind of image that the choice is about the audience rather than the quality.

Old GIFs come in bulk or not at all. Drop the entire folder: each converts in turn on your own machine with its own progress, keeps its name with the extension swapped, and everything returns as a single ZIP.

Keep the originals somewhere until the site has been through a round of testing. Sites of this vintage occasionally reference a GIF from somewhere nobody remembers — an email template, a stylesheet, a cached theme file — and the missing image will not be obvious until somebody looks at the right page.

The conversion runs inside the browser tab on your own processor. Nothing is uploaded, so there is no queue and no daily count, and the ceiling is the free tier’s 100 MB per file — which is what makes dropping a hundred legacy images at once practical rather than an afternoon of waiting.

Watching the network tab while a batch runs is the honest way to confirm it: no request carrying a file leaves the machine.