Base64 Decode
Decode Base64 strings back to text or binary
How It Works
Select Your File
Upload, drag & drop, or paste directly from clipboard.
Configure Options
Set quality level and output format.
Download Result
Processed entirely in your browser. Download instantly.
About Base64 Decode
Decode Base64-encoded strings back to plain text or download as a binary file. Paste a Base64 string (standard or URL-safe) and the tool instantly decodes it. If the decoded content is valid UTF-8 text it is displayed in the text panel; otherwise a binary download is offered. Useful for debugging JWT tokens, inspecting embedded images in data URLs, decoding API payloads, or reading Base64-encoded configuration values. Runs entirely in your browser –sensitive data never touches a server. Supports both padded and unpadded Base64 input.
Frequently Asked Questions
Can I decode URL-safe Base64?
Yes. The tool auto-detects and handles both standard and URL-safe Base64 variants.
What if the decoded content is binary?
If the output is not valid text, a binary file download is offered with the detected MIME type.
Can I decode JWT tokens?
Yes. Each part of a JWT (header, payload) is Base64url encoded and can be decoded here.