GIF Merger
Combine two or more GIFs into a single file — played one after another, side by side, or stacked vertically.
Combine GIFs one after another
Sequence mode glues the frame lists together in the order shown in the list: the first GIF plays out fully, then the second starts, and the whole thing loops. Each GIF keeps its own frame timing. If the GIFs are different sizes, every frame is centered on a shared canvas the size of the largest one — nothing gets cropped or stretched.
Put GIFs side by side or stacked
Side-by-side and stacked modes play every GIF at once on one canvas, which is the standard way to build before/after comparisons and reaction pairings. The GIFs play in lockstep: shorter ones loop until the longest one finishes, so nobody freezes mid-comparison.
Combine GIFs into one file, not one video
The output is a real GIF, so it plays anywhere a GIF plays — chat apps, forums, email — with no player and no sound track to worry about. If a platform insists on MP4, that's a different job; for everything else, one merged GIF is the lighter file and the simpler share.