Base64 Decode
Decode Base64 strings back to text, images, or files. All processing runs locally in your browser — no data is uploaded.
Base64 Length: 0
You can also paste Base64 with data URI prefix (e.g. data:image/png;base64,...)
Text Mode Output Mode
Decoded text will appear here...
Base64 Length: 0
Text Mode
Decoded text will appear here...
Recent Decodes
How to Decode Base64
Decode any Base64 string back to its original format in a few simple steps:
1
Enter Base64
Paste a Base64 string directly or upload a .txt file containing Base64 data.
2
Choose Output Mode
Select Text, Image, or File mode based on what the Base64 represents. The tool will auto-detect and recommend the best mode.
3
Copy or Download
View the decoded text, preview the image, or download the file. Results are processed entirely in your browser.