JSON Validator
Check whether JSON syntax is valid before you use it in apps, APIs, or config files.
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 plain readable content. It is useful for debugging tokens, inspecting encoded payloads, reviewing copied values, and checking whether a Base64 string was generated correctly.
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.