{
  "title": "Crop GIF",
  "human_url": "https://happytails.ai/en/image-tools/crop-gif/",
  "agent_url": "https://happytails.ai/agents/en/image-tools/crop-gif/",
  "language": "en",
  "markdown_url": "https://happytails.ai/en/image-tools/crop-gif.md",
  "content": "Crop GIF\nKeep one rectangle from an animated GIF. Crop every frame without losing its timing.\nHow can we improve this tool?\nReport a problem or share an idea.\nPlease leave out private information. Your message and the tool name go to our team via PostHog.\nHow to use Crop GIF\nUpload a GIF. Enter the left and top offsets, then the width and height of the crop in pixels. The rectangle must fit inside the original image. Run the tool, preview the result and download it.\nThe same rectangle is applied to every composited frame. The animation keeps its frame order, timing and loop count. Cropping removes content outside the rectangle from the output.\nUseful next steps\nRotate GIF\nGIF maker\nChange GIF speed\nChoose the area to keep\nUpload a GIF. Enter the left and top offsets, then the width and height of the crop in pixels. The rectangle must fit inside the original image. Run the tool, preview the result and download it.\nThe whole animation is cropped\nThe same rectangle is applied to every composited frame. The animation keeps its frame order, timing and loop count. Cropping removes content outside the rectangle from the output.\nLimits and privacy\nFiles stay 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. GIF transparency is binary; re-encoding can slightly change colors. Your original file is unchanged.",
  "content_format": "text/plain",
  "visibility": "public",
  "links": [
    {
      "name": "Rotate GIF",
      "url": "https://happytails.ai/en/image-tools/rotate-gif/"
    },
    {
      "name": "GIF maker",
      "url": "https://happytails.ai/en/image-tools/gif-maker/"
    },
    {
      "name": "Change GIF speed",
      "url": "https://happytails.ai/en/image-tools/change-gif-speed/"
    }
  ],
  "tool": {
    "id": "crop-gif",
    "category": "image-tools",
    "built": true,
    "requirements": "Files stay 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. GIF transparency is binary; re-encoding can slightly change colors. Your original file is unchanged.",
    "implementation": {
      "fields": [
        {
          "key": "x",
          "label": "Left (pixels)",
          "value": 0,
          "type": "number",
          "min": 0,
          "max": 1919,
          "step": 1
        },
        {
          "key": "y",
          "label": "Top (pixels)",
          "value": 0,
          "type": "number",
          "min": 0,
          "max": 1919,
          "step": 1
        },
        {
          "key": "width",
          "label": "Crop width (pixels)",
          "value": 100,
          "type": "number",
          "min": 1,
          "max": 1920,
          "step": 1
        },
        {
          "key": "height",
          "label": "Crop height (pixels)",
          "value": 100,
          "type": "number",
          "min": 1,
          "max": 1920,
          "step": 1
        }
      ],
      "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"
    }
  },
  "markdown": "# Crop GIF\n\n- Human page: https://happytails.ai/en/image-tools/crop-gif/\n- Markdown: https://happytails.ai/en/image-tools/crop-gif.md\n- Structured JSON: https://happytails.ai/agents/en/image-tools/crop-gif/index.json\n- Visibility: public\n\n## Tool capabilities\n\n| Property | Value |\n| --- | --- |\n| Tool ID | `crop-gif` |\n| Category | image-tools |\n| Implementation | Registered implementation. Registration alone is not a production-quality guarantee. |\n| Browser execution | Use the visible action or interactive controls. |\n| Browser processing | Browser; see tool notes for network behavior. |\n| HTTP API | Not callable through HTTP. |\n| Browser-agent interface | run_current_tool |\n\n### Implementation notes\n\nRuns 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.\n\n### Inputs and settings\n\nNo free-text input is required. Use the file inputs and/or settings below.\n\nAccepted browser files: `.gif,image/gif`. Choose one file.\n\nBrowser file-input limit: 20971520 bytes in total. HTTP limits can differ.\n\n| Setting | Meaning | Control type | Default | Constraints |\n| --- | --- | --- | --- | --- |\n| `x` | Left (pixels) | number | 0 | min=0 max=1919 step=1 |\n| `y` | Top (pixels) | number | 0 | min=0 max=1919 step=1 |\n| `width` | Crop width (pixels) | number | 100 | min=1 max=1920 step=1 |\n| `height` | Crop height (pixels) | number | 100 | min=1 max=1920 step=1 |\n\n### Browser-agent workflow\n\n1. Open the human page in a browser that supports WebMCP.\n2. Discover the interface exposed by that page; use its actual schema.\n3. Select files on the page first when the tool requires files.\n4. Call `run_current_tool` with valid input and settings.\n5. Inspect the returned result or error and the displayed output. Retrieve files from the displayed download links.\n\nCalls do not automatically copy or download results. Browser permissions still apply. Interface availability alone is not proof of successful execution.\n\n### Planning specification\n\nFiles stay 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. GIF transparency is binary; re-encoding can slightly change colors. Your original file is unchanged.\n\nThis describes intended requirements. Use the implementation notes, interface schema and observed output to determine current support.\n\n### Complete machine-readable capability record\n\n```json\n{\n  \"id\": \"crop-gif\",\n  \"category\": \"image-tools\",\n  \"built\": true,\n  \"requirements\": \"Files stay 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. GIF transparency is binary; re-encoding can slightly change colors. Your original file is unchanged.\",\n  \"implementation\": {\n    \"fields\": [\n      {\n        \"key\": \"x\",\n        \"label\": \"Left (pixels)\",\n        \"value\": 0,\n        \"type\": \"number\",\n        \"min\": 0,\n        \"max\": 1919,\n        \"step\": 1\n      },\n      {\n        \"key\": \"y\",\n        \"label\": \"Top (pixels)\",\n        \"value\": 0,\n        \"type\": \"number\",\n        \"min\": 0,\n        \"max\": 1919,\n        \"step\": 1\n      },\n      {\n        \"key\": \"width\",\n        \"label\": \"Crop width (pixels)\",\n        \"value\": 100,\n        \"type\": \"number\",\n        \"min\": 1,\n        \"max\": 1920,\n        \"step\": 1\n      },\n      {\n        \"key\": \"height\",\n        \"label\": \"Crop height (pixels)\",\n        \"value\": 100,\n        \"type\": \"number\",\n        \"min\": 1,\n        \"max\": 1920,\n        \"step\": 1\n      }\n    ],\n    \"files\": true,\n    \"multiple\": false,\n    \"input\": false,\n    \"accept\": \".gif,image/gif\",\n    \"maxFileBytes\": 20971520,\n    \"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.\",\n    \"experience\": {\n      \"automatic\": false,\n      \"single\": false,\n      \"inputMaxLength\": 1000000,\n      \"inputMode\": \"text\",\n      \"label\": \"Your text\",\n      \"placeholder\": \"Type or paste your input…\",\n      \"help\": \"Up to 1,000,000 characters. Review the settings before running.\",\n      \"action\": null\n    },\n    \"mode\": \"explicit\",\n    \"interactive\": false\n  },\n  \"execution\": \"Browser interface\",\n  \"api\": null,\n  \"browser_agent\": {\n    \"supported\": true,\n    \"name\": \"run_current_tool\",\n    \"discovery\": \"WebMCP on the human page in a supporting browser\",\n    \"verification\": \"See audit/API-AUDIT.md; availability is not verification\"\n  }\n}\n```\n\n## Page guide\n\nKeep one rectangle from an animated GIF. Crop every frame without losing its timing.\n\nHow can we improve this tool?\n\nReport a problem or share an idea.\n\nPlease leave out private information. Your message and the tool name go to our team via PostHog.\n\n### How to use Crop GIF\n\n1. Upload a GIF. Enter the left and top offsets, then the width and height of the crop in pixels. The rectangle must fit inside the original image. Run the tool, preview the result and download it.\n2. The same rectangle is applied to every composited frame. The animation keeps its frame order, timing and loop count. Cropping removes content outside the rectangle from the output.\n\n## Useful next steps\n\n- [Rotate GIF](https://happytails.ai/en/image-tools/rotate-gif/) ([Markdown](https://happytails.ai/en/image-tools/rotate-gif.md))\n\n- [GIF maker](https://happytails.ai/en/image-tools/gif-maker/) ([Markdown](https://happytails.ai/en/image-tools/gif-maker.md))\n\n- [Change GIF speed](https://happytails.ai/en/image-tools/change-gif-speed/) ([Markdown](https://happytails.ai/en/image-tools/change-gif-speed.md))\n\n## Choose the area to keep\n\nUpload a GIF. Enter the left and top offsets, then the width and height of the crop in pixels. The rectangle must fit inside the original image. Run the tool, preview the result and download it.\n\n### The whole animation is cropped\n\nThe same rectangle is applied to every composited frame. The animation keeps its frame order, timing and loop count. Cropping removes content outside the rectangle from the output.\n\n### Limits and privacy\n\nFiles stay 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. GIF transparency is binary; re-encoding can slightly change colors. Your original file is unchanged.\n"
}