Question 1

Does changing the speed reduce quality?

Accepted Answer

No. Only the delay stored with each frame is rewritten. The pixels are copied byte for byte, so the GIF looks exactly the same and the file size doesn't change.

Question 2

Why won't my GIF go any faster?

Accepted Answer

Browsers play GIF frames at most every 20 ms (50 fps), and treat shorter delays as 100 ms. Once frames reach 20 ms, they can't speed up further. Removing frames is the only way past that.

Question 3

How do I slow down a GIF?

Accepted Answer

Pick a speed below 1×. At 0.5× every frame is shown twice as long, so the GIF takes twice as long to play.

Question 4

Do all frames change by the same amount?

Accepted Answer

Yes. Each frame's delay is divided by the speed, so a GIF with uneven timing keeps its rhythm.

Question 5

Is my GIF uploaded?

Accepted Answer

No. The GIF is edited on your device and never leaves your browser.

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