Free online tools
Base64 Encode and Decode
Encode plain text to Base64 and decode it back safely.
Use the tool
Runs instantly in your browser. No upload needed.
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Frequently asked questions
Does this tool send my input to AsKrs?
Most tool pages run directly in the browser and are designed for quick local work.
What should I check before copying or downloading the result?
Review the preview, file name, format, size, and any warning message first.
What should I verify before I paste the Base64 Encode and Decode output into another system?
Readable output is not the same as correct output.
Does readable output from Base64 Encode and Decode mean the data is correct?
A visible before-and-after state reduces silent mistakes such as dropped fields, broken quoting, escaped twice values, or row misalignment.