The EVEDAYS Encoder/Decoder is a free text conversion tool for both developers and general users. It processes instantly in your browser without server transmission, so sensitive information like API keys, tokens, and personal data can be safely converted.
Supported conversion modes:
• Base64: An encoding scheme that safely represents binary data as text. Widely used for email attachments, API auth tokens, and image data URIs.
• URL: Converts special characters (spaces, non-ASCII chars) into %XX format for safe URL inclusion. Essential when constructing query parameters.
• HTML Entity: Replaces characters with special HTML meaning (<, >, &, ", ') with entity codes. Used for XSS prevention and safe HTML output.
• Unicode: Converts each character to \uXXXX unicode escape sequences. Useful for representing non-ASCII characters in JSON files or source code.
🔒 Security & Privacy
This tool operates 100% on client-side JavaScript. Your input text is never transmitted to any external server and is processed only in browser memory. This is especially useful when you need to safely convert sensitive data such as:
• Base64 encoding/decoding of API keys and secret tokens
• URL encoding of OAuth callback URLs
• HTML entity conversion for safely displaying user input
• Unicode escaping of multilingual strings
Unlike typical online encoding tools, EVEDAYS makes no network requests, eliminating any risk of confidential information leakage.
💡 FAQ
Q. Is Base64 encoding the same as encryption?
A. No. Base64 is a simple encoding scheme, not encryption. Anyone can decode it, so storing passwords in Base64 is not secure.
Q. Can I encode Korean/CJK characters with Base64?
A. Yes. This tool internally applies UTF-8 encoding before Base64 conversion, supporting all Unicode characters including Korean, Japanese, Chinese, and emoji.
Q. Does URL encoding convert spaces to %20 or +?
A. This tool uses encodeURIComponent, which converts spaces to %20. The + notation is only used in the application/x-www-form-urlencoded format.
