A ceramic tile mosaic with four expressive cat faces

How to Combine GIFs into One Animated Collage

Combine reaction GIFs into a grid, choose a background, and export a GIF or WebM. Compare actual files, loop timing, and layout choices.

Published October 4, 20267 min read

To combine GIFs into one animated collage, add the source files to the Animation Gallery Creator, check the moving preview, and select Export GIF. The tool puts up to four images in each row. You can also export a WebM video from the same layout.

This guide uses four cat reactions to make one horizontal strip. We exported both files through the browser tool. The downloads below are the actual results. Use them to compare motion, image quality, and file size before you make a collage with your own GIFs.

Download the four source GIFs

These files come from our free Cat Reactions pack. Each source is 112 × 112 pixels, has 13 frames, and runs for 1.04 seconds. Each frame lasts 80 milliseconds. The equal timing makes this a useful first example: all four cats return to the start at the same time.

Make the collage in six steps

  1. Open the Animation Gallery Creator. Under Source Images, select “Click to upload or drag images here.”
  2. Add Wave hello, Cheer, Nod, and Panic in that order. Add them one at a time if your file picker sorts a group differently. The tool uses the upload order from left to right.
  3. Check the four source cards. Each should show 112×112, 13 frames, and 1.04 s. Above the preview, check for “13 synced frames.”
  4. Leave Background and Overlay empty for this example. The preview shows a checkerboard behind transparent areas. That checkerboard is not part of the exported GIF.
  5. Select Export GIF and wait for the download. Open the file and check that all four cats move. Keep this file before you export the other format.
  6. Select Export WebM. Wait for the recording and download to finish. Use the Latest Export player to inspect the video. This panel shows only the most recent export.

To change the order, remove and add the sources again in the order you want. The current tool does not have a drag-to-reorder control. It also does not let you choose two columns for four images. Four sources make one row; a fifth source starts a centered second row.

Inspect the finished files

Four animated cats in a row: waving, cheering, nodding, and panicking
Actual GIF export: 776 × 224 pixels, 13 frames, and a 1.04-second repeating cycle.

Download the GIF collage or download the WebM collage. The measurement file records exact byte counts, source files, and browser settings.

The tool displays each cat in a 160 × 160 pixel square. This makes the 112-pixel sources larger, but it does not add image detail. Three 24-pixel gaps and 32 pixels of padding on each edge produce the 776-pixel width. The same top and bottom padding produce the 224-pixel height.

Understand the 100-frame limit

The tool builds a shared timeline from the times when any source changes its frame. It stops when all animated sources reach their loop start together, or when that timeline reaches 100 frames. The limit applies to the combined timeline. It is not a limit of 100 frames per uploaded GIF.

Our four sources change together every 80 milliseconds. Their combined timeline therefore has 13 frames, not 52. With different frame delays, a change in one GIF can add a timeline frame while the other images stay still. The combined count can grow quickly.

If the tool reaches 100 timeline frames before all sources restart, the export ends there and returns to the beginning. One or more GIFs can jump at that boundary. Check the last-to-first transition. Use sources with the same duration and matching frame delays when a clean shared loop matters.

Add a background or an overlay

Select Upload Background to put a still image behind the collage. Select Upload Overlay to put a still image above it. Both layers fill the canvas and can crop at the edges. For this example, a 776 × 224 pixel image has the same shape as the output.

Use a transparent PNG for an overlay with a logo or border. An opaque overlay can hide the cats. Keep important text away from the edges, then inspect the preview. PNG and JPEG files can also be source tiles; they stay still while the GIFs move. Use square source images to avoid stretching in the square tiles.

Choose GIF or WebM

Use GIF where you need a repeating image. GIF has a limited color palette, so inspect fine edges and gradients. Use WebM where the page or app accepts video. WebM export depends on browser recording support, and its measured timing can differ slightly from the GIF. The video player on this page repeats because its loop setting is on.

This wide collage is useful as a pack preview or a reaction strip. For a single chat emoji, use one of the original square GIFs instead. Keep those originals so you can make a new layout without starting from a previously compressed collage.

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