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DEVELOPER TOOL
Convert text and files to Base64 and back. UTF-8 safe, standard and URL-safe variants, drag-drop file upload.
Base64 is a binary-to-text encoding scheme that represents binary data in an ASCII string format. It uses a set of 64 printable ASCII characters.
The standard variant uses + and / characters, while the URL-safe variant uses - and _ instead to avoid conflicts with URL syntax and special characters.
This tool guarantees UTF-8 safety, so you can safely encode emoji, Korean text, newlines, and all other characters without data loss.
Base64 is encoding, not encryption. It provides no security. Use proper encryption for sensitive data.
No. Base64 is encoding, not encryption. Anyone can decode Base64, so it provides no security. Do NOT use Base64 to protect sensitive information. Use proper encryption instead.
Standard Base64 uses + and / characters. URL-safe variant replaces these with - and _ to make it safe for URLs and filenames.
This tool can handle files up to 5MB. For larger files, you may need to process them in multiple parts.
No. All processing happens in your browser only. Nothing is sent to or stored on any server. Only your last used mode preference is stored locally.