What exact factor does this slow the GIF down by?

A fixed 2x: every frame's delay is doubled, so the whole animation plays at exactly half its original speed.

Can I choose a different slow-down amount, like 3x or 1.5x?

Not with this tool - it's a deliberately simple, one-click preset with a fixed 2x factor. Use GIF Playback Speed Changer instead if you need a custom multiplier anywhere from 0.25x to 8x.

How is this different from GIF Framerate Changer or GIF Duration Changer?

This tool multiplies each frame's EXISTING delay by a fixed factor, preserving relative timing between frames, with no numeric input required at all. Framerate Changer and Duration Changer both require you to enter a target value (an fps or a duration) and can flatten or rescale timing quite differently.

Is there a matching tool to speed a GIF back up?

Yes, GIF Animation Speeder is the inverse one-click preset (a fixed 2x speed-up) for undoing this or matching it going the other direction.

GIF Animation Slower - One-Click 2x Slow Down

Overview

Introduction

Not every slow-down needs a dial - sometimes you just want a GIF at half speed, right now, with nothing to configure. This tool is exactly that: one upload, one click, done.

It trades the flexibility of a custom multiplier for the simplicity of a single opinionated preset.

What Is GIF Animation Slower?

GIF Animation Slower is a one-click preset that multiplies every frame's delay by a fixed factor of 2x, playing the animation at exactly half its original speed. There's no number to type - upload a GIF, click the button, get a slowed-down result.

It's a deliberately simpler, more opinionated version of GIF Playback Speed Changer, which does the same kind of proportional delay-scaling but lets you choose any multiplier from 0.25x to 8x. Reach for this tool when 2x slower is exactly what you want and typing a custom value would just be extra friction; reach for Playback Speed Changer when you need a different amount.

How GIF Animation Slower Works

The tool decodes the GIF into its frames and their original delays, then multiplies each frame's own delay by the fixed factor of 2, clamped to GIF's valid delay range.

The scaled frames are re-encoded with the same images, order, and loop setting as the source GIF - only the fixed 2x delay multiplication is applied, uniformly, to every frame.

When To Use GIF Animation Slower

Use it whenever a straightforward half-speed slow-down is all you need and you'd rather not think about multipliers at all.

Use GIF Playback Speed Changer instead if 2x isn't the exact amount you want - it supports any custom multiplier in the same proportional-scaling style.

Often used alongside GIF Playback Speed Changer and GIF Animation Speeder.

Features

Advantages

Zero configuration - a single click produces a predictable, fixed result.
Preserves each frame's timing relative to the others, just like the more flexible Playback Speed Changer.
Runs entirely client-side; uploaded GIFs never leave your browser.

Limitations

The slow-down factor is fixed at 2x and can't be adjusted - for any other amount, use GIF Playback Speed Changer.
Frames whose delay is already near GIF's 10000-centisecond maximum can get clamped rather than fully doubled.

Examples

Slowing down a fast animation

Input

Original delays: 5cs, 5cs, 5cs

Output

New delays: 10cs, 10cs, 10cs

Every delay is doubled by the fixed 2x factor, halving the playback speed while keeping all three frames equally timed relative to each other.

Best Practices & Notes

Best Practices

If 2x isn't quite the slow-down you're after, switch to GIF Playback Speed Changer for a custom multiplier instead of applying this preset twice.
Check for clamped frames if your source GIF already has very long delays close to GIF's maximum.
Use GIF Speed Normalizer first if the source GIF's timing is already inconsistent, so the 2x slow-down applies evenly.

Developer Notes

This tool is intentionally a thin wrapper: `newDelay = round(originalDelay * 2)`, clamped to GIF's valid range, applied uniformly - functionally a fixed-argument call into the same proportional-scaling logic GIF Playback Speed Changer exposes with a configurable multiplier.

GIF Animation Slower Use Cases

Quickly halving the speed of a fast, hard-to-follow animation
A fast, no-typing alternative to Playback Speed Changer when 2x is the target
Producing a consistent, predictable slow-motion effect across a batch of GIFs

Common Mistakes

Expecting a configurable slow-down amount - this tool is fixed at 2x by design; use GIF Playback Speed Changer for anything else.
Applying this preset repeatedly to reach a larger slow-down instead of just using Playback Speed Changer with a bigger multiplier directly (which avoids compounding rounding).

Tips

Applying this twice roughly quadruples the original delays (with some rounding drift) - for precise large multipliers, use Playback Speed Changer once instead.
Pair with GIF Animation Speeder to quickly compare a GIF at both half and double its original speed.

GIF Animation Slower