Troubleshooting
Why JavaScript fails after capture
Client scripts in the project can run from disk. They still fail when they call a live API, expect routes that were never saved, or need cookies from a login you did not complete.
This article covers JavaScript, React, and Next.js offline failures together — the cause is usually the same.
WebCopier behavior
The engine can execute JS during capture and write bundles to the project. It does not clone the application server.
Related: React / Next.js guide.
Download WebCopier for Windows
Paste a URL, copy the site you can open in a browser, and keep a local project on your PC. The free plan saves one complete page.
