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claude-code - 💡(How to fix) Fix [Bug] Image decode fails on GIF: "Failed to decode image: The image format Gif is not supported"

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Error Message

rendered a .gif file without error, so some GIF code paths succeed while clear "convert to PNG/JPEG" hint rather than a hard error). 2. Observe the decode error below. [{"error":"Failed to decode image: The image format Gif is not supported","timestamp":"2026-06-09T01:32:23.642Z"}]

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Description: Bug Description An image operation fails when the input is a GIF, with: Failed to decode image: The image format Gif is not supported

This appears intermittent / path-dependent: in a later session the Read tool rendered a .gif file without error, so some GIF code paths succeed while another rejects the format outright. Reporting so the failing path can be made consistent with the working one (decode GIF, or fail gracefully with a clear "convert to PNG/JPEG" hint rather than a hard error).

Environment Info

  • Platform: darwin
  • Terminal: Apple_Terminal
  • Version: 2.1.169
  • Feedback ID: fec98269-cb88-43d5-8acc-30ad114e4fc7

Steps to Reproduce

  1. Provide/attach a .gif image to an image-decoding operation.
  2. Observe the decode error below.

Expected GIF is decoded (or, if unsupported by design, a clear actionable message: "GIF not supported — convert to PNG/JPEG").

Actual

[{"error":"Failed to decode image: The image format Gif is not supported","timestamp":"2026-06-09T01:32:23.642Z"}]

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