: A known issue exists where K9s becomes unresponsive when attempting to "describe" a ConfigMap containing approximately 390 KB of JSON data. While kubectl handles this size nearly immediately, K9s may hang for up to a minute before displaying the content.

: The U.S. General Services Administration (GSA) provides a 390 KB FAQ document regarding the transition to Unique Entity IDs (SAM) .

Several notable technical guides and reports are specifically cataloged at this file size:

: A summary report on Stormwater BMP (Best Management Practices) performance and maintenance evaluation for coastal habitats is published as a 390 KB PDF. Media & Creative

: Within the McNeel (Rhino/Grasshopper) community, specific design exports or "mech" renders are often shared as images around the 390 KB mark for forum compatibility.