Upscale Any Animated GIF to 2x or 4x Without Losing a Frame

A GIF upscaler that keeps the animation intact

This GIF upscaler makes an animated GIF two or four times bigger and rebuilds the detail in every frame with an AI model. It also has a Pixel art mode that enlarges sprites into crisp square blocks instead of smearing them. Either way you get a GIF back, with the same frames, the same timing and the same loop.

I built it because a plain GIF resize stretches each frame with a smoothing filter, the same way your browser zooms a picture, so a small reaction GIF just turns into a bigger blurry one. I wanted a GIF enhancer that hands back a GIF, one that looks sharper and still plays exactly like the original.

Everything runs in your browser on your own device. You don't need an account, and the GIF you download carries no watermark.

How to upscale a GIF

The first time you use AI mode, your browser downloads the model and the code that runs it, then keeps them cached for later visits. Pixel art mode needs no download at all.

AI upscale or Pixel art: which mode to pick

The two modes solve opposite problems, and picking the wrong one is the most common reason an upscaled GIF looks off.

A quick test: zoom into your GIF. If you see hard square pixels that someone placed on purpose, use Pixel art. If you see soft, photo-like detail or video compression blocks, use AI upscale.

How the AI GIF upscaler works

The tool doesn't hand your GIF to the browser to play. It reads the file itself, block by block, and rebuilds every frame the way a browser shows it. That matters because most GIFs are optimized: frame 12 often stores only the few pixels that changed since frame 11, and the "disposal" setting of each frame decides what happens to the rest. Upscaling those partial patches on their own would leave seams and ghosting, so each frame gets rebuilt in full first.

Each full frame then goes through the same engine as my AI video upscaler. For GIFs up to 720 pixels tall, that's IMDN, a small super-resolution network trained on high-resolution photos. It runs at 2x, and for 4x the tool runs it twice. It works on your graphics card through WebGPU, and falls back to the CPU through WebAssembly when a browser doesn't offer WebGPU. GIFs taller than 720 pixels go through FSR, AMD's edge-aware upscaler, which is fast and does a good job on frames that already carry plenty of detail. The video upscaler page explains both engines in depth.

After that, the tool turns each upscaled frame back into GIF data:

• Each frame gets its own 256-color palette. Upscaling creates smooth in-between shades along every edge, and one shared palette for the whole animation would band visibly. If a frame still has 256 colors or fewer, they're kept exactly.
• The timing is copied frame by frame. A GIF stores a separate delay for every frame, in hundredths of a second. The new GIF gets the same delay on every frame, so a GIF that pauses on its last frame still pauses there.
• The loop setting stays. A GIF that loops forever still loops forever, and one set to play once still plays once.

Transparent GIFs and stickers

Transparency is where most upscalers go wrong with GIFs. A GIF pixel is either fully see-through or fully solid, and the see-through pixels usually hold black as their hidden color. An upscaler blends neighboring pixels to draw smooth edges, so it mixes that hidden black into the outline of your sticker. On a white page you then see a dirty dark fringe around everything.

So before a transparent frame reaches the AI model, the tool fills the see-through area with the colors of the pixels next to it, spreading outward from the edges. The model then blends edge pixels with matching colors instead of black. After upscaling, the tool rebuilds the transparency at the new size from the original mask, smoothing the outline so diagonal edges don't turn into 4-pixel staircases at 4x. The result still has the hard, all-or-nothing edges every GIF has, but without the fringe.

Pixel art mode doesn't need any of that. Every transparent pixel simply becomes a transparent block.

Upscaling pixel art without blur

Pixel art is the one kind of image where any smart upscaling makes things worse. The artist placed every pixel by hand, and the look depends on hard edges between them. A smoothing filter turns those edges into mush, and an AI model trained on photos tries to "fix" the steps into curves. A good pixel art upscaler doesn't guess at all.

The correct method is nearest-neighbor scaling at a whole number: at 4x, each pixel becomes a 4×4 block of the same color. That's what Pixel art mode does. It never creates a new color, so the palette of your sprite comes out exactly as it went in. I offer 3x and 6x as well as the usual 2x, 4x and 8x, because game sprites and emotes often need to hit a size that isn't a power of two. A 32×32 sprite at 6x, for example, becomes 192×192.

Pick a whole-number scale and you'll never see uneven pixels. They show up when a sprite gets stretched by an odd amount like 2.5x, where some pixels end up 2 wide and others 3. That's also why the tool doesn't offer in-between sizes.

How big will the upscaled GIF be?

Bigger than you might expect, and it's worth knowing why before you start. Doubling the width and height means four times as many pixels in every frame. GIF compression works line by line on palette colors, so it can't shrink that extra area away the way video does. My sample GIF above is 4.0 MB at 480×270 with 36 frames. Here's what came out:

A small sprite or a short meme with flat colors stays tiny. A long GIF cut from real footage gets heavy fast, and that's a property of the format, not of the upscaler. I explain the reasons in why GIFs get so big.

To keep things playable, the tool only offers a scale when each frame stays within about 4.2 million pixels (a little more than 2560×1440) and the whole animation stays within what a browser tab can handle. A scale it can't offer is listed under the scale picker, so you know why it's missing.

If the file comes out too big for where it's going, use the Compress it link under the result. It hands the GIF straight to my GIF compressor, which can cut it down while keeping the new resolution. If the destination plays video, the GIF to MP4 converter gets the same picture into a fraction of the size.

Tips for the best results

• Start from the best copy you have. GIFs get re-saved every time someone shares them, and each round adds noise and color banding. The AI model sharpens what's there, artifacts included.
• Try 2x first. It's four times faster than 4x, and for a GIF going into a chat or a post it's usually enough.
• Use the Anime setting for drawn content. It darkens and thins line art after the upscale, which suits anime, cartoons and comics. Leave it off for real footage, where it turns hair and shadows into drawn-looking strokes.
• Check the result at full size. Open the downloaded GIF at 100% zoom. Shrunk to fit a screen, any upscale looks sharp, so that's where the real difference shows.
• Keep the tab in front. Browsers slow down background tabs, and an AI upscale of a long GIF takes noticeably longer if you switch away.

GIF upscaler or video upscaler?

If you have the video the GIF was made from, upscale the video instead. A video has millions of colors, while a GIF keeps at most 256 per frame, so the video upscaler has far more to work with. You can then turn the sharper clip into a GIF with the MP4 to GIF converter.

When the GIF is all you have, which is the usual case with memes and reaction GIFs, this tool is the right one. It keeps the file a GIF, so it still autoplays and loops everywhere a GIF works.

Frequently asked questions