FastImageToolsFastImageTools

Animated Image Checker

Check whether a supported GIF, WebP, PNG, AVIF, or HEIC file contains animation information. The inspection runs locally in your browser, and the original file is not uploaded by this tool.

Local processingJSON reportNo sign-up

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JPGPNGWebPAVIFGIFSVGHEICTIFFBMPRAW
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•Drag from Finder or Photos

Free users: up to 15 images at once • Premium: unlimited batch processing

Back to Inspect Image Format, Metadata, and Compatibility

What this inspection checks

Check whether a supported GIF, WebP, PNG, AVIF, or HEIC file contains animation information.

The report combines format detection with animation flags and, where the parser provides them, frame count, duration, loop information, transparency, and container details.

How to inspect the image

  1. 1

    Choose an image

    Select one or several supported image files from your device.

  2. 2

    Review the detected fields

    Open the format details and integrity tabs to review the values found in the file structure.

  3. 3

    Keep the result

    Copy the report or download it as JSON. The original image is not changed.

Frequently asked questions

What does this checker report?

The report combines format detection with animation flags and, where the parser provides them, frame count, duration, loop information, transparency, and container details.

Is my image uploaded?

No. This inspection runs in your browser and does not upload the original image.

Does the checker modify the image?

No. It reads technical fields and produces a report; it does not convert, repair, or rewrite the file.

Is the result a complete file validation?

GIF is read completely, while other formats use a limited inspection window. Complex AVIF or HEIC sequences may require deeper validation than this checker performs.

Related image tools

GIF Frame Counter

Count frames in a GIF and inspect its animation timing, loop setting, palette, and transparency.

PNG Transparency Checker

Check whether a PNG encodes transparency through an alpha channel or a tRNS chunk.

Image Extension Mismatch Checker

Compare a known filename extension with the image format detected from the file signature.

JPG Format Inspector

Inspect JPEG container and encoding details without decoding or changing the picture.

Progressive JPEG Checker

Check whether a JPEG uses progressive scans or baseline encoding.

PNG Format Inspector

Inspect PNG color type, bit depth, transparency, interlace, profile, text, and APNG information.

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