Base64 Converter
Encode and decode Base64 strings and files. Free, fast, and runs 100% in your browser.
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Base64 Encoder/Decoder
Encode text to Base64 or decode from Base64
About Base64 Converter
The ZamDev Base64 Converter encodes text and files to Base64 format and decodes Base64 strings back to their original content. Base64 encoding is essential for embedding images in CSS/HTML, encoding email attachments, transmitting binary data in JSON APIs, and working with data URIs. The tool handles both text and file input, supports encoding and decoding, and processes everything client-side for privacy.
How It Works
- 1Enter text or upload a file you want to encode to Base64.
- 2Click Encode to convert the input to a Base64 string.
- 3Or paste a Base64 string and click Decode to reveal the original content.
- 4Copy the encoded or decoded output with one click.
- 5Use the Base64 output for data URIs, API payloads, or email encoding.
Key Features
Lightning Fast
Processes instantly with zero server delays
100% Private
Your data never leaves your device
No Sign-up Required
Use this tool instantly — completely free
Works Everywhere
Compatible with all modern browsers and devices
Common Use Cases
Embedding small images as Base64 data URIs in HTML/CSS
Encoding API authentication credentials for HTTP headers
Decoding Base64-encoded email attachments
Converting binary data for transmission in JSON payloads
Encoding configuration values for environment variables
Decoding Base64-encoded JWT token parts for debugging
Frequently Asked Questions
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