Item logo image for ZumiFiles CORS Helper

ZumiFiles CORS Helper

zumilabs.com
ExtensionDeveloper Tools3 users
Item media 2 (screenshot) for ZumiFiles CORS Helper
Item media 1 (screenshot) for ZumiFiles CORS Helper
Item media 2 (screenshot) for ZumiFiles CORS Helper
Item media 1 (screenshot) for ZumiFiles CORS Helper
Item media 1 (screenshot) for ZumiFiles CORS Helper
Item media 2 (screenshot) for ZumiFiles CORS Helper

Overview

Transparently proxies local /api/download?url=... requests for ZumiFiles to enable cross-origin remote file previewing.

ZumiFiles CORS Helper is a single-purpose developer utility companion for ZumiFiles (https://zumilabs.com/tools/zumifiles/). When loading remote files (such as 3D models, PDF documents, or CSV spreadsheets) via public URLs, strict browser Cross-Origin Resource Sharing (CORS) rules often prevent web applications from reading file streams directly. ZumiFiles CORS Helper uses Chrome's native Declarative Net Request engine to add permissive CORS headers (`Access-Control-Allow-Origin: *`) exclusively to HTTP requests initiated by ZumiFiles (`zumilabs.com`, `localhost`, and `127.0.0.1`). Key Features: - Seamless Remote File Previewing: Load remote 3D models (.glb, .obj), PDFs, images, and spreadsheets directly into ZumiFiles. - Scoped Initiator Rules: Header modifications and download redirects only apply to requests initiated by ZumiFiles domains (`zumilabs.com`, `localhost`, `127.0.0.1`). - Zero Data Storage & Tracking: Does not store, track, log, or transmit any user browsing activity or file data. - High Performance: Operates purely via Chrome's native declarative net rules without background service worker overhead. How to Use: 1. Install ZumiFiles CORS Helper. 2. Open ZumiFiles (https://zumilabs.com/tools/zumifiles/). 3. Click "Load Remote URL" and paste any public file link. ZumiFiles will fetch and render the remote file instantly! Privacy Guarantee: ZumiFiles CORS Helper operates completely locally inside your browser. It does not collect, store, or transmit personal data or browsing activity to any external server. Support & Feedback: For technical support or bug reports, contact ZumiLabs at help@zumilabs.com or visit https://zumilabs.com/tools/zumifiles/.

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Details

  • Version
    1.0.0
  • Updated
    August 3, 2026
  • Size
    31.12KiB
  • Languages
    English (United Kingdom)
  • Developer
    Website
    Email
    support@zumilabs.com
  • Non-trader
    This developer has not identified itself as a trader. For consumers in the European Union, please note that consumer rights do not apply to contracts between you and this developer.

Privacy

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The developer has disclosed that it will not collect or use your data. To learn more, see the developer’s privacy policy.

This developer declares that your data is

  • Not being sold to third parties, outside of the approved use cases
  • Not being used or transferred for purposes that are unrelated to the item's core functionality
  • Not being used or transferred to determine creditworthiness or for lending purposes

Support

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