How to Speed Up or Slow Down a GIF
Change GIF playback speed instantly in your browser. Speed up, slow down, or set exact timing. Free, private, no signup.
The problem
You found the perfect reaction GIF but it plays too fast to read the text. Or you made a screen recording GIF and it's painfully slow. Or you want a dramatic slow-motion effect on an animation.
GIF speed is controlled by frame delays — each frame has a delay value (in hundredths of a second) that tells the viewer how long to show it before advancing. To change the speed, you need to modify those delay values across every frame, then re-encode the entire GIF. No browser or OS has a built-in tool for this.
Most online GIF editors either require an account, add a watermark, or upload your GIF to their server for processing. For a simple speed change, that's unnecessary.
How it works
- Upload your GIF — drag and drop or click to browse.
- The tool parses every frame of the GIF and displays an animated preview at the current speed.
- Pick a speed — use preset buttons (0.25x, 0.5x, 1x, 1.5x, 2x, 4x) or fine-tune with a slider.
- Preview in real time — the animation plays at your selected speed before you commit.
- Download — the re-encoded GIF saves with modified frame delays. No quality loss since pixel data is untouched.
Everything runs locally. Your GIF is never uploaded anywhere.
How GIF frame delays work
A GIF isn't a video — it's a sequence of images (frames) with a delay value after each one. The delay is measured in centiseconds (hundredths of a second):
- 10cs = 100ms — standard speed, about 10 frames per second
- 5cs = 50ms — fast, about 20 fps
- 2cs = 20ms — the minimum most browsers will honor (some clamp to 20ms even if the delay says less)
- 50cs = 500ms — slow, two frames per second
When you set the speed to 2x, every frame's delay is halved. At 0.5x, every delay is doubled. The tool preserves the relative timing between frames — if some frames were originally faster than others, that relationship is maintained.
Speed limits
There's a floor: most browsers won't display a frame faster than every 20 milliseconds (2 centiseconds), regardless of what the GIF says. If you speed up a GIF that's already near this limit, the tool will warn you that some frames are at minimum delay and can't go faster.
There's no practical ceiling for slow-motion. You can set delays to several seconds per frame if you want a slideshow-style effect.
GIF speed vs file size
Changing speed doesn't significantly change file size. The pixel data for each frame stays identical — only the delay metadata changes. You might see a tiny difference from re-encoding overhead, but it's negligible.
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