JSON Validator
Validate JSON instantly and catch syntax errors before they break your app, API, or config.
Both tools belong to developer tools and usually solve closely related tasks.
Developer Tools
Explore related tools you may want to use together with Base64 Decoder or instead of it, depending on your task.
Use this free Base64 Decoder to convert Base64-encoded text back into readable plain text instantly. It is useful when inspecting API payloads, debugging encoded headers, checking copied tokens, reading encoded JSON strings, and verifying transmitted text during development or testing. Paste a Base64 value to decode it quickly and confirm what the encoded data actually contains.
Related pages are useful when Base64 Decoder is only one step in a bigger workflow. Sometimes you need a reverse action, a cleanup step, a validator, a supporting converter, or a nearby tool in the same category.
Return to the main Base64 Decoder page to run the tool directly.