Online Encode & Decode Tools
Base64 encoder, URL encoder, HTML entity encoder, Unicode converter, ASCII converter, ROT13 cipher โ all encoding and decoding tools run locally in your browser for privacy.
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How to use Encode
Encoding tools help you move data safely between URLs, HTML, APIs, tokens, and text systems. Use these utilities when reserved characters, binary-safe fields, or escaped text would otherwise break a request, markup block, or debugging workflow.
Common use cases
- Prepare query string values before sharing callback URLs.
- Inspect Base64, Unicode, ASCII, ROT13, and HTML-escaped text.
- Convert copied snippets without sending sensitive data to a server.
Recommended workflow
Start by choosing the format required by the destination system, paste a small sample, verify the decoded or encoded result, and keep private keys or production tokens out of public examples.
Base64 Encoder/Decoder
Encode and decode text and images to Base64
URL Encoder/Decoder
Encode and decode URLs
HTML Encoder/Decoder
HTML entity encoding and decoding
Unicode Converter
Convert text to/from Unicode encoding
ASCII Converter
NATIVE/ASCII Online Conversion Tool (Unicode Escape)
ROT13 Encoder
ROT13 encryption/decryption tool (symmetric encryption)