formdata-polyfill fills the gaps in browser and Node.js environments regarding the FormData API, providing robust cross-platform compatibility. It ensures consistent behavior for constructing and sending form data, crucial for file uploads and complex web requests. This package eliminates inconsistencies when working with FormData, preventing unexpected errors related to content types and encoding, and simplifying the handling of form submissions within both client-side and server-side JavaScript code.
The formdata-polyfill npm package saw frequent releases from late 2016 to 2019, with versions 1.x, 2.x, and 3.x. Release activity significantly slowed after 2019. A burst of releases occurred in mid-2021 with the 4.x versions. Since September 2021, there have been no new releases until August 2025.
Formdata-polyfill downloads show a strong upward trend from March 2024 (10.9M) to August 2025 (49.3M). There is a significant jump in downloads from June 2025. September 2025 downloads are incomplete but show a decrease compared to August.
