Original PickImageColors PNG size-limit experiment, October 10, 2026. Three synthetic RGB PNGs with a coral strip and teal background. Run check-files.py with Python and Pillow to verify dimensions, file sizes and hashes. Actual public-tool upload outcomes and two center clicks are recorded separately. The rejected file retains the previous image in the interface; its visible previous HEX is not a reading of the failed file. These are this tool's limits, not universal browser limits.
