Kaleido is a Python library for static image export of Plotly figures (PNG, SVG, PDF, etc.) by rendering them in a headless Chrome browser via the DevTools protocol. The library provides both async and sync APIs, with an optional singleton server mode for reuse across calls. It manages a pool of browser tabs for parallel rendering, supports chunked JSON transfer for large figures (>10MB), and includes profiling capabilities. The architecture is centered around the `Kaleido` class, which orchestrates browser lifecycle, tab allocation, and rendering through `_KaleidoTab` instances. The library is consumed by Plotly.py and can be used standalone or via CLI tools (`kaleido_mocker`, `kaleido_get_chrome`). Dependencies include `choreographer` (Python-DevTools bridge), `orjson`, and `logistro`. The test suite includes extensive integration tests with hundreds of Plotly figure mocks covering a vast range of trace types and layout features.