Free browser tool
Lottie Inspector
Inspect a Lottie file locally to see its size, dimensions, frame range, frame rate, layers, and asset references.
Choose a file to begin.
How to use this Animation report converter
Choose a Lottie JSON or .lottie file, let the browser process it, then preview and download the Animation report result. There is no account step and no server upload in this workflow.
Lottie files describe animated layers and timing in JSON. For specification-level validation, compare the result with the Lottie Animation Format documentation.
Practical notes
- • The report is generated locally.
- • A report cannot guarantee every renderer will support every feature.
- • Check image asset paths before shipping.
Frequently asked questions
Can I use this Lottie JSON or .lottie to Animation report converter without uploading a file?
Yes. The selected file is processed in your browser and is not sent to a Mascofast upload endpoint.
What does this lottie inspector change?
It reads the Lottie JSON or .lottie input and creates a Animation report result. The original remains unchanged, so you can retry with different source settings if needed.
How do I check the converted Animation report file?
Preview the result here, then open it in the browser, editor, app, or game where it will be used. Codec support, transparency, timing, and embedded assets can vary by runtime.
Need a mascot animation after conversion? Explore the Mascofast tools collection.