The checkbox was only shown for image/jpeg and image/png. Users
uploading WebP, GIF, AVIF, BMP, TIFF, HEIC (iPhone photos) or any
other raster format never saw the checkbox at all.
Fix: isCompressible now checks file.type.startsWith('image/') and
excludes only image/svg+xml (vector — would rasterise) and empty type
strings. compressImage signature widened to File | Blob so it matches
the TUploadContent type without unsafe casts.
The send-path guard in handleSendUpload was also widened from the
hardcoded jpeg/png check to use isCompressible(), keeping the two gates
in sync. The Blob-safe id attribute uses the .name fallback so it
doesn't break when originalFile is a Blob without a name.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
jared
58b19995b8