1. Add at least two GIFs and set playback order
Open Stitch sequence and select the animations to join. Move them into viewing order in the source list. For example, an opening-the-box GIF followed by a showing-the-contents GIF produces those actions in sequence. Check that each source plays correctly before merging.
2. Merge GIFs with different dimensions
Choose a single output width and height. Each source is scaled proportionally and centered in the output frame, with the selected background filling unused space. Check subject size and borders when mixing portrait and landscape GIFs. Crop individual sources first if you want to avoid borders; enlarging a small image cannot create new detail.
3. Choose a background and inspect each join
Select a background color, or choose transparency when retaining transparent regions already present in the sources. Play the generated animation from the beginning to check order, transitions, and background changes. Sequence stitching joins existing frames; it does not invent missing motion between clips.
4. Example: combine two tutorial steps
Trim unnecessary pauses from each source first, then add the GIFs to Stitch sequence in task order. Choose dimensions that keep buttons and instructions readable. After export, check that the transition from step one to step two makes sense. Use a side-by-side collage if the actions need to be compared simultaneously.
5. Compress the merged GIF or convert it to video
Joining animations adds duration and frames, but the resulting file size is not simply the sum of the source sizes. Check the actual export. Shorten unnecessary sections and use GIF compression if it exceeds a sharing limit, or convert to MP4 when the destination accepts video. Keep the original sources for revisions.