perf: Optimize large image handling with blob URLs#23
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CodeWithBehnam merged 1 commit intomainfrom Dec 25, 2025
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- Add image-utils.ts with base64 to blob URL conversion - Update ImageModal to use blob URLs instead of data URLs - Update BaseNode loadImage to use cached blob URLs - Add LRU cache for blob URLs with automatic cleanup This significantly improves performance when viewing 4K images by: - Converting base64 strings to blob URLs which are more memory-efficient - Caching blob URLs to avoid repeated conversions - Reducing browser memory pressure that caused page reloads Co-Authored-By: Behnam & Claude Code
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Summary
Fixes performance issues when viewing large (4K) generated images that caused:
Root Cause
Large images stored as base64 strings (10-20MB+) were being passed directly to
<img>tags as data URLs. This caused:Solution
Convert base64 strings to Blob URLs which are much more memory-efficient:
Changes
src/lib/image-utils.ts: Utility functions for base64 to blob URL conversion with LRU cachingImageModal.tsx: Uses cached blob URLs instead of data URLsBaseNode.ts: Uses blob URLs for image preview loadingTest plan
Behnam Ebrahimi