Base64 Encoder/Decoder: Convert Data Instantly
Base64 encoding is essential for embedding data in URLs, emails, and code. This tool lets you encode or decode Base64 strings with a single click.
What It Does
The Base64 Encoder/Decoder converts plain text into Base64-encoded strings and decodes Base64 back into readable text. It handles UTF-8 characters correctly and processes the conversion entirely in your browser. This is invaluable for developers working with APIs, data URIs, or email encoding.
How to Use It
Paste your text into the input area and click Encode to get the Base64 output. To decode, paste a Base64 string and click Decode to see the original text. Copy the result to your clipboard with one click.
Tips & Tricks
Use it to encode image data for inline CSS data URIs. Decode suspicious Base64 strings from emails to see their actual content safely. Remember that Base64 increases data size by about 33 percent, so it is not a compression method.
Use Cases
Developers embed small images as Base64 data URIs in HTML and CSS to reduce HTTP requests. QA engineers decode Base64 payloads in API responses during testing. Email administrators decode MIME-encoded headers to troubleshoot delivery issues.
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