Convert any text to Base64 and decode Base64 strings back to plain text. All processing happens locally in your browser.
Base64 is everywhere in modern web and software development.
Email protocols only support text, so binary files are encoded to Base64 for transmission.
Images and fonts can be embedded directly in HTML/CSS using Base64 data URIs, reducing HTTP requests.
JWT payloads are Base64‑encoded to safely carry user data within a URL or header.
Kubernetes secrets, .env files, and other configs often store values as Base64 for portability.
Some services encode IDs in Base64 to create short, unique alphanumeric strings.
While not secure, Base64 obscures data from casual inspection (e.g., hiding email addresses from bots).
Quick answers about Base64 and our tool.
Base64 converts binary data into safe ASCII text, making it suitable for transmission over text‑based protocols like email, JSON, or XML. It’s also used in data URIs to embed resources directly in web pages.
No, Base64 is an encoding, not encryption. It can be reversed by anyone without a key, so never use it to protect sensitive data.
This tool is optimized for text. If your Base64 represents an image or file, you’ll need a file converter. However, you can still paste the string here to see its text representation if it contains readable characters.
Absolutely not. All encoding and decoding happens inside your browser using JavaScript. No data leaves your device.