Before you merge
Trim first if the clips have dead space.
Cut unwanted starts and ends before joining so the final file does not inherit extra seconds you never wanted.
Video, GIF & Audio
Join the clips.Skip the timeline.
Put several video files together in the order you choose and download one merged copy.
1 Choose2 Order3 Merge4 Download
Status
Choose two or more clips.
Worth knowing
A clean join starts before the merge.
This tool is for simple end-to-end joining. If the clips need different edits first, do those jobs separately, then merge the finished pieces.
If the clips do not match
Make the frame sizes consistent.
Very different dimensions can create awkward scaling. Reframe or resize the odd clip first, then come back here.
After the merge
Compress only if you actually need to.
Keep the clean merged copy. If the destination rejects the file size, make a smaller version afterwards rather than throwing quality away too early.
What next?
Finish the next little job.
Use the result you just made as the starting point, not a reason to open a full editor.
Useful to know
Four things worth knowing.
The export is a bundle of choices.
Media exports combine dimensions, frame or sample rate, codec, bitrate and duration. File size is the result of those choices, not one magic quality switch.
Exporting is not mastering.
A browser utility is good for a focused conversion or edit, but it is not colour grading, audio mastering, motion tracking or a full timeline.
Play the whole thing.
Play the exported file from beginning to end and check picture, sound, crop, timing and orientation.
Match the destination.
Play the export all the way through once. Broken audio, a bad final frame or a mistimed subtitle often hides near the end.