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About JSON Animation Viewer

What is JSON Animation Viewer?

JSON Animation Viewer is a free, browser-based tool designed to help developers, designers, and animators preview Lottie JSON animation files quickly and securely. Whether you're working on a mobile app, a website, or a design project, our tool lets you instantly visualize your animations without installing any software.

Why We Built This

Lottie animations have become the standard for adding lightweight, scalable animations to digital products. However, previewing these JSON files typically requires dedicated software or complex development setups. We created JSON Animation Viewer to solve this problem — a simple drag-and-drop tool that works right in your browser.

Our goal is to provide the fastest, easiest way to preview Lottie animations with zero friction. No sign-ups, no downloads, no configurations.

Key Features

  • Instant Preview: Drop your JSON file and see the animation play immediately. No loading screens, no waiting.
  • 100% Privacy: Your animation files never leave your device. Everything is processed locally in your browser using JavaScript. We have no servers, no databases, and no file storage.
  • Size Detection: Automatically detects and displays the original dimensions (width × height) of your animation, helping you plan your layout.
  • Drag & Drop: Simply drag your JSON file onto the viewer area, or click the button to select a file from your device.
  • Mobile Friendly: Works on all devices — desktop, tablet, and mobile. Preview animations on the go.
  • Free Forever: JSON Animation Viewer is completely free to use with no hidden costs or premium tiers.

What Are Lottie Animations?

Lottie is an open-source animation format created by Airbnb. It renders animations in real time using JSON data exported from tools like Adobe After Effects (via the Bodymovin plugin). Lottie animations are:

  • Lightweight: Much smaller than GIFs or video files
  • Scalable: Vector-based, so they look sharp at any resolution
  • Interactive: Can be controlled programmatically (play, pause, reverse, etc.)
  • Cross-Platform: Supported on iOS, Android, web, and desktop applications

Technology

JSON Animation Viewer is built with modern web technologies:

  • Next.js 15 — React framework for production-grade web apps
  • React 19 — Latest version of the popular UI library
  • Lottie-web — Official Lottie rendering library by Airbnb
  • Tailwind CSS — Utility-first CSS framework
  • TypeScript — Static type checking for reliability

Open Source

JSON Animation Viewer is open source. You can view the source code, report issues, or contribute on our GitHub repository. Contributions, bug reports, and feature requests are always welcome.

Contact

Have questions, feedback, or suggestions? Feel free to open an issue on our GitHub Issues page or reach out through the repository.

Explore More

  • How to Use JSON Animation Viewer — Step-by-step guide to previewing your animations.
  • Blog — Tutorials on Lottie animations, workflows, and best practices.
  • FAQ — Answers to frequently asked questions.