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Data Engineering
JPEG at quality 92: the boring data engineering choice that made Photoroom's 7B model work
Photoroom releases the fourth part of its PRX model development series, detailing a data pipeline that prioritizes breadth and consistency over per-image perfection. The post reveals that JPEG compression at quality 92 is indistinguishable from PNG for training, and that the fastest captioner won over the most accurate one when scaling to hundreds of millions of images.
2026-07-06