How do I make a GIF from a set of images?

Drop your images onto the tool, drag them into the order you want, set a frame delay such as 200 ms, and press Build GIF. The encoder runs in your browser and hands you a single looping GIF file to download — no account or upload needed.

What image formats can I use as frames?

Any still image your browser can decode works as a frame: PNG, JPG, WebP, BMP and single-frame GIFs are all accepted. Each file becomes one frame, and frames can be different sizes because the tool scales them to a common canvas.

How do I control the speed of the animation?

Set the global frame delay in milliseconds — 100 ms is roughly 10 frames per second, 200 ms is about 5. The fps read-out updates live. You can also type a custom delay on any single frame to pause longer on a title card or hold a key moment.

Why does my GIF look grainy or banded?

GIF supports at most 256 colours per frame, so photos with smooth gradients get quantised. Keep the colour count at 256 and leave dithering on for the smoothest result; lower colour counts make a smaller file but more visible banding.

How do I make the GIF smaller in file size?

Reduce the output width, lower the colour count to 64 or 32, or use fewer frames. Each of those shrinks the file. Flat graphics and screenshots compress far better than photographs because they have fewer unique colours.

Are my images uploaded anywhere?

No. Decoding, scaling, colour reduction and GIF encoding all happen locally in your browser using the canvas and a built-in encoder. Your pictures never leave your device, so it is safe for private screenshots and personal photos.

Animated GIF Maker — Gera Tools

The Animated GIF Maker turns an ordered stack of still images into a single looping animated GIF — entirely inside your browser. Drop in a handful of frames (a sketch sequence, a set of screenshots, a few photos of the same scene, exported animation cels) and the tool stitches them into one shareable GIF with the timing, size and colour budget you choose. It is built for makers who want a quick, private way to produce a GIF without installing software, signing up, or watching a watermark appear on their work. Because everything runs on your own machine, it is equally suited to confidential UI mockups, internal demos, and personal snapshots you would rather not hand to a web service.

How it works

Each image you add becomes one frame. The tool keeps the original decoded bitmap for every frame, so when you change the output width it always rescales from full quality rather than from a shrunken copy. Frames are drawn onto a shared canvas at your chosen size using one of three scaling modes — contain (letterbox to fit), cover (fill and crop), or stretch — with a padding colour you control for any letterbox bars.

When you press build, the canvas pixels of each frame are read back and passed through a median-cut colour quantiser that reduces the image to a palette of up to 256 colours, the hard limit of the GIF format. Optional Floyd-Steinberg dithering scatters the quantisation error across neighbouring pixels so gradients stay smooth instead of banding. Each quantised frame is then LZW-compressed and written into a standards-compliant GIF89a stream, complete with a per-frame delay and a Netscape looping block so the animation repeats forever (or plays once, if you prefer). The finished bytes are wrapped in a Blob and offered as a direct download. A live preview plays the sequence at your real timing before you ever commit to encoding, so you can fine-tune order and speed first.

Example

Say you exported eight frames of a button hover animation as PNGs. Drop all eight in, press Reverse order if they came out backwards, and set the frame delay to 80 ms for a brisk ~12 fps loop. Bump the longest pause — the resting state — to 400 ms on its single frame so the loop holds before replaying. Choose an output width of 480 px, keep colours at 256 with dithering on, and build. You get a crisp, infinitely looping GIF a few hundred kilobytes in size, ready to paste into a chat, a README, or a slide.

Goal	Setting that matters most
Faster animation	Lower the frame delay (ms)
Smaller file	Fewer colours or smaller width
Smooth gradients	256 colours with dither on
Hold on a key frame	Per-frame delay override

Every frame is processed locally — no image ever leaves your browser.