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DisclaimerUnofficial, and not affiliated with Anthropic. Nearly all of this is read straight out of what ships: npm bundles, captured prompts, published docs. Anthropic's own notes go in verbatim, marked as theirs. The rest is my reading, and every entry carries the strings behind it. If one looks wrong, vote it down and say why.

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Claude Code v2.0.46 19 Nov 2025

Enhanced Image Compression Format Handling

What: Image compression now explicitly passes the original file's media type to prevent format detection failures

Details:

Caller (Fw5() at line 315499) now extracts file extension and constructs media type string before compression
Function kiQ() at line 156042 (renamed from TiQ) accepts new media type parameter and forwards to compression handler
Prevents incorrect format handling when Sharp's automatic detection fails (e.g., PNG images incorrectly treated as JPEG)
No user-facing API changes - internal reliability improvement
Evidence: Function signature changed from TiQ(A, Q) at line 156040 in v2.0.45 to kiQ(A, Q, B) at line 156042 in v2.0.46

See this entry in the whole of v2.0.46 →