#gif stack

not side by side, stacked vertically, top and bottom, both moving at once. there's a free tool called GIF Stack that arranges multiple GIFs vertically into one tall animation, all playing together simultaneously.

what it actually does

upload a bunch of GIFs and they get arranged vertically into one animation, all playing at once.

plays simultaneously — every GIF plays in its own row at the same time, opposite of merging one after another

auto width matching — GIFs of different sizes get scaled to match a common width, aspect ratio stays intact

shorter GIFs loop to keep up — playback syncs to the longest one, shorter clips repeat so nothing looks frozen

top to bottom in the order you upload, remove and re-add to change position

free, all in-browser, original files never touched

how to use it

drop your GIFs in — drag them or click to select 2 or more

check the order — they arrange top to bottom in the order shown, remove any you don't want

hit stack — click "Stack Vertically" and it syncs everything into one animation

download the stacked GIF

why you'd actually want this

fitting several scenes into vertical content — stacking animations on top of each other works perfectly for reels and shorts-style vertical screens.

making top/bottom comparisons — two GIFs stacked and playing at the same time makes any difference obvious in a vertical layout.

don't mix this up with GIF Side by Side — side by side arranges GIFs horizontally, this arranges them vertically. pick whichever fits your content's aspect ratio.

quick faq

how's this different from GIF Merge? merge is sequential, one GIF then the next. this plays everything simultaneously, stacked on top of each other.

what if the GIFs are different lengths? shorter ones loop to match the longest one, so everything's still moving the whole time.

do they need to be the same width? nope, each one gets scaled to a common width automatically, aspect ratio stays correct.

does upload order matter? yeah, top to bottom based on when you uploaded them. remove and re-add one to change its spot.

does this mess with my original files? nope, brand new stacked GIF gets made, originals stay exactly as they were.

want GIFs stacked vertically playing at the same time? try GIF Stack now. want them side by side instead? GIF Side by Side does that.

need more free GIF tools? there's a whole GIF tool collection worth checking out.

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