The feature changes the behavior of FileReader API so that the result attribute is only set right before the Load event is fired. Motivation: This brings the chromium FileReader implementation in line with the FileAPI spec. The existing implementation was identified to possibly cause memory leaks but that scenario was very rarely seen, as evidenced by this experiment.



Specification link

Unknown standards status - check spec link for status

Status in Chromium


In development (tracking bug)

Consensus & Standardization

After a feature ships in Chrome, the values listed here are not guaranteed to be up to date.

  • Shipped/Shipping
  • No signal
  • No signals


Intent to Prototype url

Intent to Prototype thread

Last updated on 2022-01-21