feat: auto-compress clipboard images to avoid API size limits #6455
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Screenshots pasted from clipboard can exceed Claude's 5MB limit. This adds automatic image compression using sharp: - New Image utility with compress/resize/optimize functions - Clipboard reads now auto-compress images >4MB - File pastes also get optimized before upload - Transparent images stay PNG/WebP, opaque convert to JPEG - Quality reduced iteratively until under 4MB threshold - Includes comprehensive test suite (23 tests)
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Summary
Screenshots pasted from clipboard can exceed Claude's 5MB API limit, causing upload failures. This PR adds automatic image compression using
sharp.Changes
New utility:
packages/opencode/src/util/image.tsoptimizeForUpload()- main function that compresses images to <4MBIntegration: Modified clipboard handling in
clipboard.tsandprompt/index.tsxto automatically compress pasted imagesTests: 23 unit tests covering compression, resizing, format detection, and edge cases
Testing
All 23 tests pass.