> ## Documentation Index
> Fetch the complete documentation index at: https://rive-unity-feature-experimental-render-texture-support.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# Caching a Rive File

export const Demos = ({examples, runtime, columns = 2, children, childrenIndex = 0}) => {
  const examplesData = {
    cachingARiveFile: {
      title: 'Caching a Rive File',
      description: 'Load the .riv into memory once, use it multiple times.',
      riv: 'https://static.rive.app/rivs/rives_animated_emojis.riv',
      stateMachines: "State Machine 1",
      artboard: "Emoji_package",
      links: {
        web: "https://codesandbox.io/p/sandbox/rive-js-caching-a-rive-file-g675my?file=%2Fsrc%2Findex.ts%3A9%2C1",
        react: "https://codesandbox.io/p/sandbox/rive-react-caching-a-rive-file-53gmdf?file=%2Fsrc%2FApp.tsx"
      },
      source: ["https://rive.app/marketplace/24644-46045-caching-a-rive-file-at-runtime/"]
    },
    dataBindingArtboards: {
      title: 'Data Binding Artboards',
      description: 'Swap an artboard with another artboard from the same .riv or one loaded at runtime.',
      image: '/images/runtimes/rive-data-bind-components.webp',
      links: {
        web: 'https://codesandbox.io/p/sandbox/rive-js-data-binding-artboards-jx3pf9?file=%2Fsrc%2Findex.mjs%3A5%2C19',
        react: 'https://codesandbox.io/p/sandbox/rive-react-data-binding-artboards-kmvzh8?file=%2Fsrc%2FApp.tsx',
        flutter: 'https://github.com/rive-app/rive-flutter/blob/master/example/lib/examples/databinding_artboards.dart',
        reactNative: 'https://github.com/rive-app/rive-nitro-react-native/blob/main/example/src/demos/DataBindingArtboardsExample.tsx',
        android: "https://github.com/rive-app/rive-android/blob/master/app/src/main/java/app/rive/runtime/example/ComposeArtboardBindingActivity.kt"
      },
      source: ["https://rive.app/marketplace/24641-46042-data-binding-artboards/", "https://rive.app/marketplace/24642-47536-data-binding-artboards/"]
    },
    dataBindingImages: {
      title: 'Data Binding Images',
      description: 'Replace images at runtime using data binding images with javascript.',
      image: '/images/runtimes/rive-db-images.webp',
      links: {
        web: 'https://codesandbox.io/p/sandbox/objective-cohen-sqwh9q?file=%2Fsrc%2Findex.ts',
        flutter: 'https://github.com/rive-app/rive-flutter/blob/master/example/lib/examples/databinding_images.dart',
        android: "https://github.com/rive-app/rive-android/blob/master/app/src/main/java/app/rive/runtime/example/ComposeImageBindingActivity.kt"
      },
      source: ["https://rive.app/marketplace/25472-47537-data-binding-images/"]
    },
    dataBindingLists: {
      title: 'Data Binding Lists',
      description: 'Add, remove, edit, and swap items in your data binding list.',
      image: '/images/runtimes/rive-db-lists.webp',
      links: {
        web: 'https://codesandbox.io/p/sandbox/suspicious-hertz-2lg4m8?file=%2Fsrc%2Findex.ts',
        react: 'https://codesandbox.io/p/sandbox/rive-react-data-binding-lists-4msh9z?file=%2Fsrc%2FApp.tsx',
        flutter: 'https://github.com/rive-app/rive-flutter/blob/master/example/lib/examples/databinding_lists.dart',
        android: "https://github.com/rive-app/rive-android/blob/master/app/src/main/java/app/rive/runtime/example/ComposeListActivity.kt"
      },
      source: ["https://rive.app/marketplace/25474-47539-data-binding-lists/"]
    },
    dataBindingQuickStart: {
      title: "Data Binding",
      description: "Get started with Data Binding at runtime.",
      image: "/images/runtimes/rewards.gif",
      links: {
        flutter: "https://github.com/rive-app/rive-flutter/blob/master/example/lib/examples/databinding.dart",
        reactNative: "https://github.com/rive-app/rive-react-native/blob/main/example/app/(examples)/DataBinding.tsx",
        unity: "https://github.com/rive-app/rive-unity-examples/blob/main/getting-started/Assets/RewardsController.cs",
        apple: "https://github.com/rive-app/rive-ios/blob/main/Example-iOS/Source/Examples/SwiftUI/RewardsView.swift",
        android: "https://github.com/rive-app/rive-android/blob/master/app/src/main/java/app/rive/runtime/example/ComposeDataBindingActivity.kt"
      },
      source: ["https://rive.app/marketplace/25475-47540-data-binding-demo/"]
    },
    dataBindingSolos: {
      title: "Data Binding Solos",
      description: "Control solos at runtime using strings, numbers, or enums.",
      image: '/images/runtimes/data-binding-solos.gif',
      links: {
        react: "https://codesandbox.io/p/sandbox/rive-react-controlling-solos-at-runtime-ctcnlx?file=%2Fsrc%2FApp.tsx"
      },
      source: ["https://rive.app/marketplace/24643-46044-data-binding-solos/"]
    },
    googleAppAds: {
      title: "Google App Ads",
      description: "How to make an interactive Google App with Rive.",
      image: "/images/runtimes/google-app-ads.png",
      links: {
        mobile: "https://github.com/rive-app/rive-use-cases/tree/main/rive-google-ads"
      }
    },
    layouts: {
      title: "Responsive Layouts",
      description: "Create responsive layouts that adapt to different screen sizes.",
      riv: "https://static.rive.app/rivs/layouts_demo.riv",
      stateMachines: "State Machine 1",
      artboard: "Demo",
      links: {
        web: "https://codesandbox.io/p/devbox/rive-responsive-layout-js-forked-m77nlw",
        react: "https://codesandbox.io/p/devbox/rive-responsive-layouts-react-forked-nmpv39?file=%2Fsrc%2FApp.tsx",
        flutter: "https://github.com/rive-app/rive-flutter/blob/master/example/lib/examples/responsive_layouts.dart",
        reactNative: "https://github.com/rive-app/rive-react-native/blob/main/example/app/(examples)/ResponsiveLayout.tsx",
        android: "https://github.com/rive-app/rive-android/blob/master/app/src/main/java/app/rive/runtime/example/ComposeLayoutActivity.kt"
      },
      source: ["https://rive.app/marketplace/24638-46038-layouts-demo/"]
    },
    fontsHostedCompressed: {
      title: 'Load a Compressed Font for Web',
      description: 'Dynamically load a font asset from a hosted location with compression.',
      image: '/images/runtimes/brotli-compressed-fonts.webp',
      links: {
        react: 'https://codesandbox.io/p/sandbox/prod-sound-6yc5xl?file=%2Fsrc%2FApp.tsx%3A19%2C1'
      },
      source: ["https://rive.app/marketplace/25473-47538-loading-compressed-fonts-web/"]
    },
    quickStart: {
      title: "Data Binding Quick Start",
      image: '/images/runtimes/quick-start.gif',
      description: 'Load and control your Rive (.riv) file.',
      links: {
        web: 'https://codesandbox.io/p/sandbox/rive-quick-start-js-xmwcm6?file=%2Fsrc%2Findex.ts',
        react: 'https://codesandbox.io/p/sandbox/rive-react-quick-start-4xy76h?file=%2Fsrc%2FApp.tsx%3A77%2C14',
        reactJs: 'https://codesandbox.io/p/devbox/rive-react-vanilla-js-quick-start-kz66t4?file=%2Fsrc%2FApp.tsx%3A53%2C7',
        reactNative: 'https://github.com/rive-app/rive-nitro-react-native/blob/main/example/src/demos/QuickStart.tsx',
        unity: '/game-runtimes/unity/tutorials/health-bar'
      },
      source: ["https://rive.app/marketplace/24637-46037-health-bar-data-binding-quick-start/"]
    },
    quickStartReact: {
      title: "Data Binding Quick Start",
      image: '/images/runtimes/quick-start.gif',
      description: 'Load and control your Rive (.riv) file.',
      links: {
        react: 'https://codesandbox.io/p/sandbox/rive-react-quick-start-4xy76h?file=%2Fsrc%2FApp.tsx%3A77%2C14',
        reactJs: 'https://codesandbox.io/p/devbox/rive-react-vanilla-js-quick-start-kz66t4?file=%2Fsrc%2FApp.tsx%3A53%2C7'
      },
      source: ["https://rive.app/marketplace/24637-46037-health-bar-data-binding-quick-start/"]
    },
    scriptingDrawingShapes: {
      title: "Drawing with Scripting",
      image: "https://static.rive.app/docs/drawing-demo.png",
      description: "Draw a squirkle, a star, and an animated wave with scripting.",
      links: {
        editor: "https://rive.app/community/files/25751-48087-drawing-shapes-with-scripting"
      }
    },
    scriptingMasonry: {
      title: "Masonry Layout",
      image: "https://static.rive.app/docs/masonry.png",
      description: "Create a masonry layout using a Layout script.",
      links: {
        editor: "https://rive.app/community/files/25826-masonry-layout/"
      }
    },
    scriptingTippingConverter: {
      title: "Custom Converter",
      image: "https://static.rive.app/docs/tipping-scripting-converter.gif",
      description: "Calculate the bill total using the converter's input value added to data binding values.",
      links: {
        editor: "https://uat.rive.app/community/files/610-1126-custom-converter-with-scripting"
      }
    },
    scriptingUnitTesting: {
      title: "Unit Testing",
      image: "https://static.rive.app/docs/scripting-default-thumb.png",
      description: "This hands-on example demonstrates unit testing rgbToHex and hexToRgb color utilities.",
      links: {
        editor: "https://rive.app/community/files/25752-48088-test-script"
      }
    },
    scriptingSnakeGame: {
      title: "Snake - Complete Game",
      image: "https://static.rive.app/docs/snake-game.png",
      description: "Check out this complete game built entirely with Rive using scripting.",
      links: {
        editor: "https://rive.app/community/files/25748-48110-snake-game/"
      }
    },
    scriptingMultiTouch: {
      title: "Tracking Multi-touch",
      image: "https://static.rive.app/docs/scripting-default-thumb.png",
      description: "Keep track of every finger.",
      links: {
        editor: "https://rive.app/community/files/25754-48090-multi-touch-with-scripting"
      }
    },
    scriptingNestedPointers: {
      title: "Nested Pointer Events",
      image: "https://static.rive.app/docs/scripting-default-thumb.png",
      description: "Pass pointer events from the parent component to the instantiated children.",
      links: {
        editor: "https://rive.app/community/files/25750-48086-scripting-nested-pointer-events/"
      }
    },
    scriptingBoilPathEffect: {
      title: "Boiling Path Effect",
      image: "https://static.rive.app/docs/boiling-effect.gif",
      description: "Apply a boiling effect to any path using scripting.",
      links: {
        editor: "https://rive.app/community/files/25767-48113-scripting-path-effect-boil"
      }
    },
    scriptingTextPathEffect: {
      title: "Text Path Effect",
      image: "https://static.rive.app/docs/text-path-effect.gif",
      description: "Control a text path using scripting.",
      links: {
        editor: "https://rive.app/community/files/25823-text-path-effects/"
      }
    },
    scriptingDrawImages: {
      title: "Render an Image with Scripting",
      image: "https://static.rive.app/docs/render-image-with-scripting.jpg",
      description: "Draw an image, give it transforms, control its mesh, and add clipping all through scripting.",
      links: {
        editor: "https://rive.app/community/files/26406-draw-an-image-with-scripting"
      }
    },
    scriptingSlotMachine: {
      title: "Slot Machine - Complete Game",
      image: "https://static.rive.app/docs/slot-machine.png",
      description: "Build a complete casino game using scripting.",
      links: {
        editor: "https://rive.app/community/files/25759-slot-machine-game-with-scripting/"
      }
    },
    scriptingLists: {
      title: "Scripting Lists",
      image: "/images/runtimes/rive-db-lists.webp",
      description: "Add, remove, edit, and swap items in your data binding list using Rive scripting.",
      links: {
        editor: "https://rive.app/community/files/27098-51051-scripting-lists"
      }
    },
    scriptingPlinko: {
      title: "Plinko - Complete Game",
      image: "https://static.rive.app/docs/scripting-plinko-game.png",
      description: "Build a complete Plinko game using Layout, Node, and Path Effect scripts.",
      links: {
        editor: "https://rive.app/marketplace/25772-blinko-scripted-game/"
      }
    }
  };
  const runtimesInOrder = ['web', 'react', 'reactJs', 'reactNative', 'flutter', 'apple', 'android', 'unity', 'unreal', 'mobile', 'editor'];
  const runtimeTitles = {
    web: 'Web',
    reactJs: 'React (Imperative)',
    react: 'React',
    reactNative: "React Native",
    flutter: 'Flutter',
    apple: 'Apple',
    android: 'Android',
    unity: 'Unity',
    unreal: 'Unreal',
    mobile: 'Mobile',
    editor: 'Try in Rive'
  };
  const riveInstances = useRef([]);
  const initRives = () => {
    const rive = window.rive;
    examples.forEach(example => {
      const {riv, stateMachines = "State Machine 1", artboard} = examplesData[example];
      if (riv) {
        const canvasId = `rive-canvas-${example}`;
        const canvas = document.getElementById(canvasId);
        if (canvas) {
          const r = new rive.Rive({
            src: riv,
            stateMachines,
            canvas,
            artboard,
            autoplay: true,
            Layout: new rive.Layout({
              fit: rive.Fit.Layout
            }),
            onLoad: () => {
              r.resizeDrawingSurfaceToCanvas();
              riveInstances.current.push(r);
            }
          });
        }
      }
    });
  };
  useEffect(() => {
    if (window.rive) {
      initRives();
      return;
    }
    const checkRive = () => {
      if (window.rive) {
        initRives();
        window.removeEventListener("rive-loaded", checkRive);
      }
    };
    const handleResize = () => {
      riveInstances.current.forEach(instance => {
        instance.resizeDrawingSurfaceToCanvas();
      });
    };
    window.addEventListener("rive-loaded", checkRive);
    window.addEventListener("resize", handleResize);
    return () => {
      window.removeEventListener("rive-loaded", checkRive);
      window.removeEventListener("resize", handleResize);
      riveInstances.current.forEach(instance => {
        instance.cleanup();
      });
    };
  }, []);
  const RuntimeLink = ({link, runtime}) => {
    if (!link) return null;
    if (runtime === 'editor') {
      link = `${link}?utm_source=docs&utm_medium=docs_demo_card`;
    }
    return <a href={link} target="_blank" className="cursor-pointer border border-neutral-600 hover:border-white rounded-[4px] text-14 py-1 px-5 mr-[10px] mb-[10px]">
        {runtimeTitles[runtime]}
      </a>;
  };
  const CardContainer = ({children: content}) => {
    return <div className="flex flex-col card block font-normal group relative my-2 ring-2 ring-transparent rounded-2xl bg-white dark:bg-background-dark border border-gray-950/10 dark:border-white/10 overflow-hidden w-full">
        {content}
      </div>;
  };
  const getSrc = imageSrc => {
    if (location.hostname === "localhost" && imageSrc.startsWith("/images/")) {
      return imageSrc;
    } else if (imageSrc.startsWith('https:')) {
      return imageSrc;
    }
    return `https://rive.app/docs${imageSrc}`;
  };
  return <div className={`
        card-group not-prose grid gap-x-4
        grid-cols-1
        ${columns >= 2 && "md:grid-cols-2"}
        ${columns >= 3 && "xl:grid-cols-3 xl:w-[67rem] xl:max-w-[calc(100vw-25rem)]"}
      `}>
      {examples.map((example, index) => {
    const {title, image, links, description, source, riv} = examplesData[example];
    const canvasId = `rive-canvas-${example}`;
    return <>
            {index === childrenIndex && children}
            <CardContainer key={canvasId}>
              <div className="w-full h-0 relative pb-[75%]">
                <div className="absolute inset-0">
                  {image && <img alt={title} className="w-full object-cover object-center" src={getSrc(image)} />}

                  {riv && !image && <canvas id={canvasId} style={{
      width: "100%",
      height: "100%"
    }} />}
                </div>
              </div>
              <div className="flex flex-grow flex-col px-6 py-5 relative" data-component-part="card-content-container">
                <div className="flex flex-col grow">
                  <h2 className="not-prose font-semibold text-base text-gray-800 dark:text-white" data-component-part="card-title">{title}</h2>

                  <div className="flex flex-col grow prose mt-1 font-normal text-sm leading-6 text-gray-600 dark:text-gray-400" data-component-part="card-content">
                    <div className="grow flex flex-col">
                        <p>{description}</p>
                        {source && source.length > 0 && <p className="mt-3">
                              {source.map((item, index) => {
      if (source.length == 1) {
        return <>Open the <a href={item}>Rive file</a>.</>;
      }
      if (index == 0) {
        return <>Open <a href={item}>Rive file 1</a></>;
      }
      return <>, <a href={item}>file {index + 1}</a></>;
    })}
                            </p>}
                    </div>
                    {<div className="mt-6 flex flex-wrap">
                        {runtimesInOrder.map(currentRuntime => {
      if (runtime && currentRuntime !== runtime) return;
      return <RuntimeLink key={currentRuntime} runtime={currentRuntime} link={links[currentRuntime]} />;
    })}
                      </div>}
                  </div>
                </div>
              </div>
            </CardContainer>
          </>;
  })}
    </div>;
};

export const Runtimes = ({runtimes = {}, cols = 3}) => {
  const RUNTIME_DEFS = [{
    key: 'web',
    title: 'Web (JS)',
    icon: 'js'
  }, {
    key: 'react',
    title: 'React',
    icon: 'react'
  }, {
    key: 'reactNative',
    title: 'React Native',
    icon: 'react'
  }, {
    key: 'flutter',
    title: 'Flutter',
    icon: 'flutter'
  }, {
    key: 'apple',
    title: 'Apple (iOS/macOS)',
    icon: 'apple'
  }, {
    key: 'android',
    title: 'Android',
    icon: 'android'
  }, {
    key: 'unity',
    title: 'Unity',
    icon: 'unity'
  }, {
    key: 'unreal',
    title: 'Unreal Engine',
    icon: <svg xmlns="http://www.w3.org/2000/svg" className="text-primary dark:text-primary-light" viewBox="0 0 512 512" aria-hidden="true">
				<path fill="currentColor" d="M256 512a256 256 0 1 0 0-512 256 256 0 1 0 0 512zm65.5-113.7l-25.1-28.3-42.4 42.6c-24.1-.3-47.9-6.2-69.3-17.2s-40.1-26.9-54.5-46.3c4.5 1.4 9.2 2.3 13.9 2.6 6.9 .1 14.5-2.4 14.5-14.1l0-115.1c.1-3-.5-5.9-1.7-8.6s-3.1-5-5.4-6.9-5-3.1-7.9-3.7-5.9-.5-8.8 .2c-19.6 4.5-35.3 53.5-35.3 53.5-.2-22.6 4.5-45 13.8-65.6s23-39 40.1-53.8c22.5-19.5 50.1-32.2 79.6-36.7-21.4 12.2-33.5 32.1-33.5 48.9 0 26.9 16.2 23.6 21 19.7l0 155.3c.8 1.9 1.9 3.8 3.2 5.5 2.1 3 5 5.4 8.2 7s6.9 2.5 10.5 2.5c16.2 0 37.3-18.5 37.3-18.5l0-125.7c0-12.8-9.6-28.2-19.3-33.5 0 0 17.9-3.2 31.7 7.4 2.6-3.2 5.3-6.2 8.2-9.1 32.2-31.6 62.5-40.6 87.7-45.1 0 0-45.9 36.1-45.9 84.5 0 36 .9 123.8 .9 123.8 17 16.4 42.4-7.3 65.2-30.8-4.4 21.3-24 75.9-86.6 105.4z" />
			</svg>
  }];
  const cards = RUNTIME_DEFS.filter(runtime => Boolean(runtimes[runtime.key]));
  if (cards.length === 0) {
    return null;
  }
  return <CardGroup cols={cols}>
			{cards.map(runtime => <Card key={runtime.key} title={runtime.title} href={runtimes[runtime.key]} icon={runtime.icon} />)}
		</CardGroup>;
};

Caching a Rive file lets your app reuse a loaded .riv file instead of loading and parsing it again. This can improve performance when the same file is rendered multiple times.

Each runtime provides its own APIs and patterns for loading, reusing, and caching Rive files.

<Runtimes
  runtimes={{
web: '/runtimes/web/caching-a-rive-file',
react: '/runtimes/react/caching-a-rive-file',
reactNative: '/runtimes/react-native/caching-a-rive-file',
flutter: '/runtimes/flutter/caching-a-rive-file',
apple: '/runtimes/apple/caching-a-rive-file',
android: '/runtimes/android/caching-a-rive-file'
}}
/>

## Explore demos

<Demos examples={["cachingARiveFile"]} />
