No. A VITE_ value used by browser code is not a secret. Vite replaces these values during the build, and they can become part of the JavaScript sent to visitors. An .env file is a configuration mechanism, not encryption for client-side code. 1
Distinguish public identifiers from secrets
Some services intentionally issue publishable keys. That is different from a server secret allowing paid requests or access to restricted data. Judge the key by its permissions and provider guidance, not its variable name.
When a request requires a secret, perform it on a backend or suitable serverless function. The browser can ask your controlled application API for the result. That endpoint still needs appropriate authorization, input checks and abuse controls.
If a secret was already shipped
Treat it as exposed: revoke or rotate it with the provider and inspect usage. Removing the value from the next build does not erase earlier copies. 2
Do not paste your real credential into public “key-checking” websites. Use a fictional marker when inspecting a local build.
Minification, TypeScript types and .gitignore cannot protect a value the application deliberately delivers to a visitor’s browser. The relevant question is where the value runs, not whether the source file happened to be named .env.
