Decode Base64 encoded strings back to readable plain text. Essential for debugging and data inspection.
Paste the Base64 encoded string into the text area.
Press decode to convert the Base64 string to plain text.
View the decoded plain text and copy it for use in your project.
Base64 decoding is the reverse process of Base64 encoding — it converts a Base64 encoded string back to its original text form. This is a common task in web development, debugging, and data analysis. You might need to decode Base64 when inspecting HTTP Authorization headers, reading data URIs, analyzing JWT (JSON Web Token) payloads, debugging API responses, or examining encoded email content.
Our Base64 decoder instantly converts encoded strings to readable text, making it easy to inspect and verify encoded data without writing code or using command-line tools. It is especially useful for quickly checking what data is being sent in API requests or stored in configuration files.
Decode API authentication headers and encoded response payloads.
Decode JWT token headers and payloads for debugging auth flows.
Decode MIME-encoded email content and attachments.
No installation needed — decode Base64 right in your browser.