SMRTR ProgrammingSep 7, 2025Daily.dev

How to Build an Upload Service in Flutter Web with Firebase

SMRTR summary

A complete upload service in Flutter Web using Firebase Storage allows users to easily share photos, documents, and other files. This reusable service uploads single or multiple files, returns download URLs, and uses dependency injection for clean code organization. The implementation handles errors with a custom error class, uploads files in parallel for efficiency, and follows best practices like file validation and unique storage paths.

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