Differences Between Desktop App and Browser Extension - Requestly

Requestly API Client is available as both a Desktop App and a Browser Extension.
While both versions let you create, test, and debug APIs efficiently, they differ in capabilities due to platform constraints. This document highlights key differences to help you choose the right version for your workflow.

Platform Availability

Feature	Browser Extension	Desktop App
Platform Support	Chrome, Firefox, Edge	Windows, macOS

API & Request Capabilities

Feature	Browser Extension	Desktop App
Supported Request Types	REST, GraphQL	REST, GraphQL
Multipart / Form Data	❌ Not supported	✅ Supported
Send Files in Multipart / Form data	❌ Not supported	✅ Supported
Access APIs on Localhost	✅ Supported	✅ Supported
Replay Requests from Interceptor	❌ Not supported	✅ (Replay recorded requests from interceptor)
Collection Runner	✅ Supported	✅ Supported

Workspace & Collaboration

Feature	Browser Extension	Desktop App
Local Workspaces	❌ Not supported	✅ Supported
Team Workspaces	✅ Supported	✅ Supported
File Import / Export	✅ Supported	✅ Supported

Summary

Use the Browser Extension for a lightweight, in-browser API client ideal for quick testing and debugging.
Use the Desktop App if you need advanced capabilities like file uploads, multipart requests, local workspaces, or replaying intercepted requests.