TranslateBase64 Encoder/Decoder
Encode and decode Base64 strings and files instantly in your browser.
100% Private — All encoding/decoding happens in your browser. Nothing sent to any server.
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How to Use the Base64 Encoder/Decoder
Base64 is an encoding scheme used to represent binary data in an ASCII string format. It is commonly used to embed images directly into HTML/CSS, or to transmit data over media that are designed to deal with text.
Text Tab
Convert standard text into Base64 format, or decode a Base64 string back into readable text. Useful for creating basic authentication tokens or hiding simple text strings.
Image Tab
Upload an image to instantly generate its Base64 string. You can then copy this string and paste it directly into your HTML (<img src="...">) or CSS (url(...)) to eliminate extra HTTP requests on your website.
File Tab
Encode any file (PDFs, ZIPs, audio) into a Base64 string. This is useful for transmitting files via JSON APIs where binary data isn't natively supported. You can also decode Base64 strings back into downloadable files.
Data URL Tab
Create complete Data URIs (e.g., data:image/png;base64,...). This is specifically formatted for direct embedding into web browsers without needing a separate file.
About This Tool
The Base64 Encoder/Decoder is a free online tool that instantly converts text, images, and files into Base64 format, and vice versa.
If you are a developer trying to embed an image directly into an HTML file to speed up your website, or trying to send a small file through a JSON API, Base64 turns binary data into safe, readable text.
This tool goes beyond basic text encoding—it can generate ready-to-paste HTML/CSS code for images, decode Base64 strings back into downloadable files, and analyze Data URLs. Everything runs locally in your browser, meaning your files and code never leave your device.
How to Use
- 1Select the tab for the type of conversion you need (Text, Image, File, or Data URL).
- 2To encode, paste your text or drag your file/image into the input box.
- 3The tool will instantly generate the Base64 string output.
- 4To decode, paste a Base64 string into the input box to turn it back into readable text or a downloadable file.
- 5Click the "Copy" button to grab the result, or click "Download" to save a decoded file to your computer.
Frequently Asked Questions
Base64 is used to convert binary data (like an image or a PDF) into plain text. This allows you to send files through systems that only understand text, like email attachments, JSON APIs, or XML documents, without corrupting the data.
Go to the "Image" tab and upload your picture. The tool will instantly generate an HTML <img> tag with the Base64 code inside the src attribute. You can copy that entire tag and paste it straight into your website's code, eliminating the need for a separate image file.
No. In fact, Base64 encoding makes a file about 33% larger. It is designed for data compatibility (making files travel safely through text-only systems), not for compression or saving space.
No. Base64 is an encoding method, not encryption. It simply scrambles the data into a different format, and anyone can easily decode it back. You should never use Base64 to hide sensitive information like passwords.
Yes. All encoding and decoding happen directly inside your web browser using JavaScript. Your files, images, and code snippets are never uploaded to our servers, ensuring your data remains completely private.
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