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⚡ NothingLeaves

Text Encoder & Decoder

Encode and decode with Base64, URL, HTML entities, plus generate MD5, SHA-1, SHA-256, and SHA-512 hashes. Browser-based, no upload needed.

Processed entirely in your browser
0 words / 0 characters

Encode (transforms text in-place)

Decode

Hash Generation

Generate checksums of the text above. Does not modify the text.

Tip: Type or paste text above, then click an encode/decode button to transform it in place. You can chain multiple transformations (e.g., Base64 encode then URL encode). Hash generation computes checksums without modifying your text.

Frequently Asked Questions

What encoding formats are supported?
We support Base64, URL encoding (percent-encoding), HTML entities, and Unicode escape sequences. Both encoding and decoding are available for all formats.
Can I chain multiple encoding transforms?
Yes. Each transform modifies the text in-place, so you can Base64 encode first and then URL encode the result by clicking both buttons in sequence.
What is Base64 encoding used for?
Base64 converts binary data to ASCII text, commonly used for embedding images in HTML/CSS, sending data in JSON or XML, and encoding email attachments.
Is my text sent to a server for encoding?
No. All encoding and decoding happens locally in your browser using built-in JavaScript functions. Your text never leaves your device.

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