Free Base64 Encoder & Decoder
Turn text into Base64 and Base64 back into text, with a URL-safe option and full UTF-8 support, so emoji and every script survive the trip. Convert files to Base64 and data URIs too. It runs entirely in your browser, so nothing is uploaded.
33 characters in
64 characters out
Upload any file to get its raw Base64 and a data URI with the detected MIME type. The file is read on your device and goes nowhere.
Remember that Base64 is an encoding, not encryption. Anything you encode can be read by anyone who decodes it.
Encode or decode in four steps.
Pick a direction, paste your text, set the options, then copy or download the result. Everything updates as you type.
Pick a direction
Choose Encode to turn text into Base64, or Decode to turn a Base64 string back into text. The swap button flips the direction and carries your result across.
Paste your text
Type or paste into the box. The result appears instantly and updates as you type. Everything stays on your device.
Set the options
Turn on URL-safe output for strings that need to live in a link or a token, and strip the = padding if the system you are feeding does not want it.
Copy or download
Copy the result in one tap or download it as a .txt file. Need a file instead? Upload one below to get its Base64 and a ready-made data URI.
A Base64 tool that gets the details right.
Base64 looks trivial until an emoji comes back garbled or a + breaks a URL. This tool goes through real UTF-8 bytes both ways and knows both alphabets.
Encode and decode, live
Both directions in one tool, converting as you type. The swap button flips the direction and carries the output across, so you can round-trip a string in a click.
UTF-8 safe
Your text is turned into UTF-8 bytes before it is encoded, and decoded the same way. Emoji, Devanagari and every other script round-trip correctly instead of coming back garbled.
URL-safe and forgiving
Encode with the - and _ alphabet for URLs, filenames and tokens. When decoding, both alphabets, stray whitespace and missing padding are all accepted.
Files and data URIs
Upload any file to get its raw Base64 and a ready-to-paste data URI with the detected MIME type. The file is read locally and never leaves your device.
Payloads that move on their own.
Encoding a string by hand is fine once. But if your systems are exchanging files, tokens and payloads every day, embedding attachments in API calls, signing requests and moving documents between services, that plumbing belongs inside your own software. That is the kind of integration and custom development work we build at Techliphant, shaped around how your business actually runs.
Cleaning up URLs too? Try the URL encoder and decoder.
Common questions.
Base64 is a way of writing any data using only 64 text-safe characters: letters, digits, plus and slash. It exists so binary data can travel through systems built for plain text, like email, JSON, HTML or a URL. Every 3 bytes of data become 4 Base64 characters, which is why the output looks longer than the input.
No. Base64 is an encoding, not encryption, and it hides nothing. Anyone can decode a Base64 string in a second, with this tool or a single line of code. If you need to keep data secret, use real encryption, and treat Base64 only as a way to move the data around.
That is padding. Base64 works in groups of 3 bytes, and when your data does not divide evenly into threes, one or two = signs are added so the output length comes out as a multiple of four. Many systems also accept strings with the padding removed, and this tool decodes both forms without complaint.
Standard Base64 uses + and /, which have special meanings inside a URL. The URL-safe variant swaps them for - and _ so the string can sit in a link, a filename or a JWT without escaping. Turn on the URL-safe option to encode that way. When decoding, the tool accepts both alphabets automatically.
Yes. Use the file section to upload any file and you get the raw Base64 plus a ready-made data URI with the detected MIME type. A data URI is handy for embedding a small image or icon directly in HTML, CSS or JSON, saving a separate request. For anything large, a normally hosted file is usually the better choice, since Base64 makes the data about a third bigger.
Yes. The tool encodes your text as UTF-8 bytes before converting to Base64, and reverses the same steps when decoding. Emoji, Devanagari, Arabic, Chinese and any other script round-trip correctly. Simpler tools that skip the UTF-8 step garble anything outside basic Latin characters.
Base64 writes every 3 bytes of data as 4 characters, so the output is about 33 percent larger, plus a little padding at the end. That is the price of using only text-safe characters. It is why Base64 suits small payloads and embedding, not large file storage.
No. Encoding, decoding and the file conversion all run in JavaScript in your browser. Nothing you type, paste or upload leaves your device, so it is safe to use with tokens, keys and private files.
Yes. A quick encode is handy, but if your systems are passing files and payloads between each other every day, embedding attachments in API calls, signing requests and moving documents between services, that logic belongs inside your own software. That is the kind of integration and custom development work we do at Techliphant.
Private by design: this encoder and decoder runs entirely in your browser, so nothing you type, paste or upload is sent anywhere or stored. Your text, tokens and files stay on your own device. It is provided free for quick conversions and everyday use.
Ready when you are
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