Click to choose a file or drag & drop here
Supports images, PDF, text, and more
Plain Text to Encode
Base64 Output
Input: 0 chars
Output: 0 chars
Ratio: โ
Encode text or files to Base64 โ or decode Base64 strings back to text. Supports file upload with image preview.
Click to choose a file or drag & drop here
Supports images, PDF, text, and more
Text, images and files โ encode or decode anything in seconds.
Encode an image file and instantly see the Base64 data URI render as a preview.
Generate URL-safe Base64 with + and / replaced by - and _ for use in URLs.
Drag and drop any file โ text, image, PDF โ to encode it as Base64.
All encoding and decoding happens locally. Your files never leave your device.
Type or paste the text to encode, or a Base64 string to decode.
Select whether you want to encode to Base64 or decode from Base64.
Click the copy button to grab your encoded or decoded output instantly.
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This free online base64 encoder decoder tool is designed to work entirely in your browser — no uploads, no waiting, no software installation needed. It's fast, private, and completely free to use without any account or subscription.
Enable URL-safe mode when using Base64 in URLs โ it replaces + and / with - and _.
Base64 strings must have a length divisible by 4. Check for missing=padding if decoding fails.
Base64 is commonly used to embed binary data inside JSON API payloads.
The MIME standard uses Base64 to encode email attachments.
Base64 encoding is a fundamental tool for developers working with APIs, emails, data URIs, and authentication tokens.