Base64 Encode
Encode any text, including emoji and Hindi or Marathi, to standard padded Base64 using UTF-8. Paste or open a text file, then copy or download base64.txt.
What is the Base64 Encode?
Base64 turns text into a safe set of letters, digits, plus signs and slashes that can travel through email headers, JSON fields, data URLs and HTTP headers without being mangled. This Base64 Encode tool converts your text to UTF-8 bytes and then to standard Base64, complete with the = padding most decoders expect.
Because it encodes UTF-8, it handles far more than plain English. Emoji, accented letters and Indian scripts such as Devanagari are encoded correctly, so they decode back to exactly the same text. Every character you enter counts, including spaces and line breaks, and a live character count shows how much you have entered. Paste your text, or load a text file, and the encoding happens instantly in your browser; copy the result or download it as base64.txt.
How to use the Base64 Encode
- Type or paste the text you want to encode into the Unicode text box.
- Or press Open a text file to load the contents of a local .txt, .csv, .json, .md, .html, .xml or .log file of up to 5 MB.
- Press Process to encode the text.
- Copy the Base64 string with Copy result, or press Download to save it as base64.txt.
- Press Reset to clear the box before encoding something else.
Features
- Encodes text as UTF-8 before converting it, so any Unicode character is supported.
- Outputs the standard Base64 alphabet (A–Z, a–z, 0–9, + and /) with = padding.
- Produces a single continuous line with no line wrapping.
- Encodes spaces, tabs and line breaks exactly as entered.
- Rejects broken text containing unpaired surrogate characters instead of silently changing it.
Why use this base64 encode
- Prepares values for HTTP Basic authentication headers, JSON payloads and config files.
- Moves multilingual text through systems that only accept plain ASCII.
- Gives you output that standard Base64 decoders in any language can read.
- Keeps sensitive strings on your device during encoding.
How it works
Unicode text → UTF-8 bytes → standard Base64 alphabet with = padding.
Examples
Plain English word
Input: Hello
Result: SGVsbG8= Standard padded Base64 of UTF-8 bytes; not encryption.
Text with an emoji
Input: Hello 🌍
Result: SGVsbG8g8J+MjQ== Standard padded Base64 of UTF-8 bytes; not encryption.
Devanagari greeting
Input: नमस्ते
Result: 4KSo4KSu4KS44KWN4KSk4KWH Standard padded Base64 of UTF-8 bytes; not encryption.
Results are estimates for general information, not financial, medical, legal, tax, or property advice. Confirm important figures with the relevant institution or a qualified professional.
Base64 Encode: frequently asked questions
Is Base64 a form of encryption?
No. Base64 is an encoding, not encryption. Anyone can turn a Base64 string back into the original text in seconds, without a key or password. Use it to transport data safely through text-only systems, not to hide it. To protect secrets, use proper encryption, and never assume a Base64 value is safe to share publicly.
Why does my output end with = or ==?
Base64 works on groups of three bytes. When the input length is not a multiple of three, the final group is padded and = signs mark the padding. One = means one byte of padding and == means two. For example, Hello encodes to SGVsbG8=. This tool always includes the padding, which standard decoders expect.
Can I encode emoji or Hindi and Marathi text?
Yes. The text is converted to UTF-8 bytes first, so emoji, accented letters and scripts like Devanagari are fully supported. नमस्ते encodes to 4KSo4KSu4KS44KWN4KSk4KWH, and decoding that with any UTF-8 Base64 decoder returns the original word. Some older online encoders fail on these characters, but this one does not.
Can I encode an image or other binary file?
No. This tool encodes text. The Open a text file button reads a file as text, so it suits .txt, .csv, .json, .md, .html, .xml and .log files, but images, PDFs and other binary files will not encode correctly. Use a file-to-Base64 tool for those. The output here is also not wrapped into lines, which suits most modern uses.
Does it produce URL-safe Base64?
No. The output uses the standard alphabet with + and / and keeps the = padding. URL-safe Base64, used in JWTs and some web APIs, swaps + for - and / for _ and often drops the padding. If you need that variant, replace those characters in the copied result yourself and remove the trailing = signs if your system requires it.