How to Open Lottie Animation Files on iOS/iPhone Using Fileso

Author: Neo Huang
LAST UPDATED: 2026-04-11 04:40:16

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Fileso

Fileso is the ultimate all-in-one app for efficient file management! It supports importing, viewing, compressing, editing, and converting various formats, including images, videos, audio, documents, and code.

If you're an iOS user and need to view or manage Lottie animation files, Fileso makes it easy! Lottie is a popular animation file format for web and mobile applications, often used for lightweight, high-quality animations. Fileso, a versatile file management app for iOS, provides robust support for Lottie files, letting you open, view, and convert these animations effortlessly.

What Is a Lottie File?

Lottie is a file format that enables scalable vector animations in a lightweight JSON-based format. It was created by the team behind Airbnb's mobile app, aiming to replace heavy video files and static image sequences with an efficient, interactive, and smooth alternative. The key advantage of Lottie files lies in their ability to support complex animations while keeping file sizes minimal.

Lottie animations are typically stored in .json format, which contains the animation data and can be rendered using libraries like Lottie.js for web applications or Lottie iOS/Android SDKs for mobile apps. These animations can include vector shapes, paths, colors, and keyframes, and are rendered natively by the app, meaning they do not require external video players or large file downloads.

History of Lottie Files

The Lottie format was introduced in 2017 by Airbnb’s design team to offer an easy-to-use solution for rendering animations on mobile and web platforms. Before Lottie, animation developers often resorted to using heavy video files (MP4, MOV) or GIFs to create animations, which were not always optimal in terms of performance and file size. Lottie solved these issues by offering high-quality animations with far smaller file sizes, thus enhancing app performance and reducing loading times.

Over time, Lottie gained widespread popularity within the design and development community. It is now used by major companies like Instagram, Uber, and Google for animations in apps and websites. Tools like Bodymovin, the plugin that exports animations from After Effects to JSON, further boosted the adoption of Lottie.

Advantages of Lottie Files Compared to Other Animation Formats

Lottie files offer several advantages when compared to traditional animation formats like GIF, MP4, and SVG:

  1. Small File Sizes
    One of the biggest advantages of Lottie files is their minimal file size. Because they are JSON-based and store only data about the animation, Lottie files are often much smaller than video files or GIFs. This allows for faster load times and better app performance, especially in mobile environments.

  2. Scalability
    Lottie animations are vector-based, meaning they are resolution-independent and can scale to any size without loss of quality. Unlike GIFs or videos, which can become pixelated when resized, Lottie animations maintain sharpness across all screen sizes and resolutions.

  3. Interactivity
    Lottie allows for the creation of interactive animations. Developers can easily integrate controls that allow animations to respond to user input, such as clicks or scrolls. This interactivity makes Lottie ideal for creating engaging user experiences.

  4. Smooth Playback
    Lottie files are rendered natively on devices, meaning animations are smoother and more responsive than GIFs or video files. GIFs, for example, have limited frame rates and can be choppy, while Lottie animations play seamlessly at a higher frame rate and with precise control.

  5. Cross-platform Compatibility
    Lottie files can be used across different platforms—web, iOS, and Android—making them an ideal choice for developers building cross-platform applications. You can create an animation once and use it anywhere without worrying about format compatibility issues.

  6. Rich Animation Capabilities
    Lottie supports complex animations, including vector shapes, masks, and gradients, which are difficult to achieve with traditional formats like GIFs. It also supports transparency and alpha channels, making it highly versatile for dynamic designs.

Steps to Open Lottie Animation Files Using Fileso:

  1. Install Fileso on Your iPhone
    If you haven't already, download and install Fileso from the App Store. The app supports various file formats, including Lottie animations.

  2. Import Your Lottie File
    You can import your Lottie animation file into Fileso in multiple ways:

    • From the Files app: Simply drag and drop your Lottie file into Fileso.
    • Through Wi-Fi browser: Upload your file from your computer directly to Fileso using its Wi-Fi transfer feature.
    • Using WebDAV: If your file is stored on a cloud service or remote server, connect to it through Fileso and import the file.
  3. View the Lottie Animation
    After importing your Lottie animation (with a .json extension), open the file within Fileso. The app will automatically detect and display the animation. Fileso provides smooth playback for Lottie files, allowing you to enjoy the animation seamlessly on your iPhone.

  4. Edit or Convert (Optional)
    If needed, you can use Fileso to edit the Lottie file or convert it into another format (such as GIF) for different uses. Fileso offers a simple and powerful editing interface for Lottie files, as well as conversion tools.

  5. Save or Share
    Once you’ve viewed or edited your Lottie animation, you can save it back to your device, upload it to the cloud, or share it via email, messaging apps, or social media platforms directly from Fileso.

Conclusion

With Fileso, managing and viewing Lottie animations on your iPhone becomes a breeze. Whether you're a developer working with animations or simply someone who enjoys using Lottie files, this app offers all the tools you need in one place. Thanks to its minimal file size, scalability, and smooth playback, Lottie remains a superior animation choice compared to traditional formats like GIF and video files, and now you can fully manage these animations on your iOS device with Fileso.

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