GIF Merger

Combine multiple animated GIFs into a single file. Merge GIFs side by side, stack them vertically, overlay with per-layer opacity control, or sequence them one after another. Perfect for creating custom animations, blending effects, or combining reaction GIFs into longer sequences.

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GIF Animated Static
Max 10MB per file • 2-10 GIF files
Related GIF Tools:
GIF Maker GIF Resizer Speed Changer Video to GIF Compress GIF

How to Merge GIF Files

  1. Upload your GIF files by dragging and dropping or clicking the upload area. You can add 2-10 animated or static GIFs.
  2. Arrange the order by dragging the thumbnails. The sequence determines how GIFs appear in the final result.
  3. Set opacity per layer using the slider on each file card - especially useful for Overlay mode blending effects.
  4. Choose a merge mode: Sequence, Overlay (blend with opacity), Side by Side, Stacked, or Grid layout.
  5. Adjust settings: Set frame delay, size handling, and loop options to customize your output.
  6. Merge and download your combined GIF file.
Pro tip: For smoother animations, use GIFs with similar frame rates. You can adjust the speed of individual GIFs using our GIF Speed Changer before merging.

Merge Modes Explained

Sequence

Plays GIFs one after another to create a longer animation. Ideal for combining multiple reaction GIFs, creating storytelling sequences, or extending animation loops. Each GIF plays completely before the next one starts.

Overlay

Composites GIFs on top of each other with full opacity control per layer. Set any layer to semi-transparent to create blending, ghost effects, or double-exposure animations. The first GIF is the base layer - all others are blended over it.

Side by Side

Places GIFs horizontally next to each other, playing simultaneously. Perfect for before/after comparisons, reaction compilations, or displaying multiple perspectives of the same moment.

Stacked

Stacks GIFs vertically on top of each other, playing at the same time. Great for vertical comparison shots, timeline-style presentations, or social media content designed for mobile viewing.

Grid

Arranges GIFs in a grid pattern based on the number of files. All GIFs play simultaneously. Best for collages, multi-angle views, or showcasing several related animations together.

Popular Use Cases

Overlay Blending Effects

Composite two animations together with opacity control to create ghost effects, double exposures, or layered motion graphics.

Before/After Comparisons

Show transformations, edits, or changes side by side in a single animated image.

Animation Sequences

Chain together multiple short animations to tell a story or create longer continuous loops.

Tutorial Steps

Combine step-by-step demonstration GIFs into comprehensive visual guides.

Frequently Asked Questions

In Overlay mode, GIFs are composited on top of each other frame by frame, all playing simultaneously. Each GIF has its own opacity slider (0-100%) on its file card. The first GIF is the base layer at full opacity. Set subsequent layers to lower opacity values to blend them into the base - for example, 50% opacity creates a classic double-exposure effect. This is the best mode for creating translucent overlays or blending two animations.

Yes! The tool automatically handles GIFs of different sizes. You can choose to match the largest, smallest, or first GIF's dimensions, or set a custom size. For best results, consider using our GIF Resizer to normalize sizes beforehand.

When merging GIFs with different speeds, you can either keep original timing or set a uniform frame delay. The "Original" preset preserves each GIF's native timing, while custom values apply the same delay to all frames. For synchronized playback in side-by-side and overlay modes, a uniform delay often looks better.

You can merge between 2 and 10 GIF files at once. Each file can be up to 10MB in size. If you need to combine more GIFs, you can merge them in batches and then merge the resulting files together.

The tool preserves the original quality of your GIFs as much as possible. However, if resizing is required some quality adjustment may occur. For the best results, start with source GIFs at your desired final resolution. You can also use our GIF Compressor afterward to optimize the file size.

If the output file is too large, you have several options: reduce the dimensions using our GIF Resizer, compress it with our GIF Compressor, or convert to a more efficient format like MP4.