# Reverse GIF

- Human page: https://happytails.ai/en/image-tools/reverse-gif/
- Markdown: https://happytails.ai/en/image-tools/reverse-gif.md
- Structured JSON: https://happytails.ai/agents/en/image-tools/reverse-gif/index.json
- Visibility: public

## Tool capabilities

| Property | Value |
| --- | --- |
| Tool ID | `reverse-gif` |
| Category | image-tools |
| Implementation | Registered implementation. Registration alone is not a production-quality guarantee. |
| Browser execution | Use the visible action or interactive controls. |
| Browser processing | Browser; see tool notes for network behavior. |
| HTTP API | Not callable through HTTP. |
| Browser-agent interface | run_current_tool |

### Implementation notes

Runs entirely in your browser. Up to 20 MiB, 120 frames and 16 million decoded pixels in total. GIF colors may change slightly when re-encoded; transparency is binary. Original timing and loop count are preserved except when you change speed. Very short delays may play differently across browsers.

### Inputs and settings

No free-text input is required. Use the file inputs and/or settings below.

Accepted browser files: `.gif,image/gif`. Choose one file.

Browser file-input limit: 20971520 bytes in total. HTTP limits can differ.

No additional settings are declared for this tool.

### Browser-agent workflow

1. Open the human page in a browser that supports WebMCP.
2. Discover the interface exposed by that page; use its actual schema.
3. Select files on the page first when the tool requires files.
4. Call `run_current_tool` with valid input and settings.
5. Inspect the returned result or error and the displayed output. Retrieve files from the displayed download links.

Calls do not automatically copy or download results. Browser permissions still apply. Interface availability alone is not proof of successful execution.

### Planning specification

Processing stays in your browser. Use one GIF up to 20 MiB, 120 frames, 1,920 pixels per side and 16 million decoded pixels across all frames. Re-encoding can slightly change colors. Very short delays may play differently across browsers. The original is unchanged.

This describes intended requirements. Use the implementation notes, interface schema and observed output to determine current support.

### Complete machine-readable capability record

```json
{
  "id": "reverse-gif",
  "category": "image-tools",
  "built": true,
  "requirements": "Processing stays in your browser. Use one GIF up to 20 MiB, 120 frames, 1,920 pixels per side and 16 million decoded pixels across all frames. Re-encoding can slightly change colors. Very short delays may play differently across browsers. The original is unchanged.",
  "implementation": {
    "fields": [],
    "files": true,
    "multiple": false,
    "input": false,
    "accept": ".gif,image/gif",
    "maxFileBytes": 20971520,
    "note": "Runs entirely in your browser. Up to 20 MiB, 120 frames and 16 million decoded pixels in total. GIF colors may change slightly when re-encoded; transparency is binary. Original timing and loop count are preserved except when you change speed. Very short delays may play differently across browsers.",
    "experience": {
      "automatic": false,
      "single": false,
      "inputMaxLength": 1000000,
      "inputMode": "text",
      "label": "Your text",
      "placeholder": "Type or paste your input…",
      "help": "Up to 1,000,000 characters. Review the settings before running.",
      "action": null
    },
    "mode": "explicit",
    "interactive": false
  },
  "execution": "Browser interface",
  "api": null,
  "browser_agent": {
    "supported": true,
    "name": "run_current_tool",
    "discovery": "WebMCP on the human page in a supporting browser",
    "verification": "See audit/API-AUDIT.md; availability is not verification"
  }
}
```

## Page guide

Play an animated GIF backwards. Each frame keeps its original display time.

How can we improve this tool?

Report a problem or share an idea.

Please leave out private information. Your message and the tool name go to our team via PostHog.

### How to use Reverse GIF

1. Choose a GIF and select Reverse GIF. The last frame becomes the first. Preview the animation and download the new file.
2. Every frame keeps its original delay when the order changes. The original loop count is preserved. Transparency and frame disposal are decoded before the frames are reversed.

## Useful next steps

- [GIF maker](https://happytails.ai/en/image-tools/gif-maker/) ([Markdown](https://happytails.ai/en/image-tools/gif-maker.md))

- [Ping-pong GIF](https://happytails.ai/en/image-tools/ping-pong-gif/) ([Markdown](https://happytails.ai/en/image-tools/ping-pong-gif.md))

- [Change GIF speed](https://happytails.ai/en/image-tools/change-gif-speed/) ([Markdown](https://happytails.ai/en/image-tools/change-gif-speed.md))

## Reverse an animation

Choose a GIF and select Reverse GIF. The last frame becomes the first. Preview the animation and download the new file.

### Timing stays with each picture

Every frame keeps its original delay when the order changes. The original loop count is preserved. Transparency and frame disposal are decoded before the frames are reversed.

### Limits and privacy

Processing stays in your browser. Use one GIF up to 20 MiB, 120 frames, 1,920 pixels per side and 16 million decoded pixels across all frames. Re-encoding can slightly change colors. Very short delays may play differently across browsers. The original is unchanged.