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Free tool
Base64 Encoder / Decoder
Encode text to Base64 or decode Base64 back to text, with full UTF-8 support. Runs entirely in your browser — nothing is uploaded anywhere.
Input is capped at 20,000 characters. Output is never inserted as HTML — it's always treated as plain text.
Building something that needs real encoding/data pipelines?
We build the systems behind tools like this — not just the tools themselves.