Base64 Codec
Encodes and decodes Base64 strings with Unicode support.
What Base64 Codec does
Base64 Codec on DevBolt is an online encoder and decoder that transforms text into Base64 strings and back again. It accepts standard characters as well as full Unicode, including emoji and non-Latin scripts, producing accurate results without sending data to a server. The output appears instantly in the opposite format, making it suitable for developers, designers, and students who need to convert binary data into a readable text format or vice versa for tasks like data transmission or creating data URIs.
How to use the DevBolt Base64 Codec
- 1
Paste the text you want to encode or decode into the input field
- 2
Click the Encode button to convert text to a Base64 string, or click Decode to retrieve the original text
- 3
View the result displayed instantly in the output area
- 4
Use the Copy button to copy the generated Base64 string or decoded text
Best for
Developers, designers, and students who need a quick, private way to encode or decode Base64 strings, especially when working with Unicode characters, emoji, or creating data URIs for web projects.
Limitations
- Base64 is encoding, not encryption, so encoded content is readable by anyone
- Standard Base64 characters (+ and /) can break URLs and filenames, requiring Base64url variant for those use cases
- Encoded output increases size by approximately 33 percent
Base64 Codec FAQ
- Is Base64 encoding secure for protecting sensitive data?
- No, Base64 provides zero security. It is simply encoding that makes binary data text-safe, and anyone can decode a Base64 string instantly. Never use it to hide passwords, API keys, or tokens.
- Does this tool support Unicode characters like emoji or non-Latin scripts?
- Yes, the tool supports full Unicode, including emoji and non-Latin characters, ensuring accurate encoding even with complex symbols or international scripts.
- Will encoded Base64 strings work in URLs and filenames?
- Standard Base64 uses + and / characters that have special meaning in URLs and filenames. For JWT tokens, URL parameters, and file names, use Base64url encoding which replaces + with - and / with _.
- How much larger does Base64 make the original data?
- Base64 increases size by approximately 33 percent. Every 3 bytes of input become 4 Base64 characters, so a 1 MB image embedded as a Base64 data URI becomes about 1.37 MB in HTML or CSS.
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