Developer
Base64 decoder
Decode Base64 or Base64URL back to readable text or a file.
Free to use · Runs in your browser · No signup
This tool works in your browser. Enable JavaScript to select files and create your download.
How to use Base64 decoder
- Paste the Base64 text.
- Read the decoded text, or download the bytes if they are not text.
- Copy the result.
What you need
Nothing to upload. Type or paste directly into the tool; results update as you go.
Your result
Decoded text or a downloadable file.
Before you start
Whitespace, missing padding, and URL-safe characters are accepted. Binary data such as images is offered as a download instead of shown as text.
Questions about Base64 decoder
How do I use Base64 decoder?
Paste the Base64 text. Read the decoded text, or download the bytes if they are not text. Copy the result.
What does Base64 decoder produce?
Decoded text or a downloadable file.
What should I check before using Base64 decoder?
Whitespace, missing padding, and URL-safe characters are accepted. Binary data such as images is offered as a download instead of shown as text.
Is what I type sent anywhere?
No. The calculation runs in your browser, and the text or numbers you enter are not uploaded or stored.