🔐 Base64 Encoder & Decoder

Turn text or a small file into Base64, or turn Base64 back into normal text. Works with umlauts, Hindi, Urdu and emojis.

What this tool does

Base64 is a way to write any data using only 64 safe characters (A–Z, a–z, 0–9, + and /). It is used to put images inside HTML or CSS, to send attachments in emails, and in many APIs. This tool converts in both directions. It uses UTF-8, so text like “Grüße”, “ਸਤ ਸ੍ਰੀ ਅਕਾਲ” or “👍” comes back exactly the same.

How to use it

1. To encode: type your text and tap Encode → Base64.
2. To decode: paste the Base64 code and tap Decode → Text.
3. For an image or small file: use the File → Base64 box and copy the data URI.
4. Copy the result.

How to read the result

Base64 is always about 33% bigger than the original — the file box shows this. A data URI starts with data:image/png;base64, and can go straight into an <img src="…"> or CSS. URL-safe Base64 swaps + and / for - and _ so it can be used in links and tokens.

When it is useful

• Putting a small logo or icon directly inside an HTML email or web page.
• Reading what is inside a token, cookie or API field.
• Sending small binary data through a system that only accepts text.
• Learning and testing while you build a website.

What it cannot do

• Base64 is NOT encryption. Anyone can decode it in one second. Never use it to hide passwords or private data.
• Decoding a file (image, PDF) gives strange text — this tool decodes to text only.
• Big files make huge Base64 strings that slow pages down; keep data URIs for small images (a few KB).
• It does not check what the decoded data means.

Privacy: everything runs inside your browser. Your text is not sent to our server and is not saved.

Questions people ask

Is Base64 safe for passwords?

No. Base64 only changes how data is written. It does not protect anything. Use real encryption or a password manager.

Why is the Base64 text longer than my original?

Every 3 bytes become 4 characters, so Base64 is about 33% larger. That is normal.

What is URL-safe Base64?

It replaces + with - and / with _ and drops the = at the end, so the code can be used in web links and tokens without breaking.

Does it work with emojis and Hindi or Punjabi text?

Yes. The tool encodes text as UTF-8 first, so every language and emoji comes back correctly.

How do I put an image into HTML with Base64?

Choose the image in the File box, tap “Copy data URI”, and paste it into <img src="…">. Use this only for small images.

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