Free Developer Utility
Base64 Encoder & Decoder
Encode text, decode Base64 strings, create URL-safe Base64, and convert images or files to Base64 directly in your browser. Everything runs locally with instant validation, copy actions, and downloadable output.
Live Converter
Encode, decode, and validate Base64
Developer Notes
Private Base64 conversion for everyday engineering work
Base64 converts binary or text data into ASCII characters that can travel through JSON, HTML, CSS, URLs, and configuration files. This browser-based utility helps developers inspect payloads, prepare embeds, decode tokens, and generate data URLs without sending content to a server.
Encode text safely
Convert Unicode text into standard Base64 or URL-safe Base64 for query strings, payloads, and test fixtures.
Decode with validation
Detect malformed Base64, missing padding, and invalid characters before using decoded data in an application.
Create data URLs
Turn images and small files into Base64 strings for CSS backgrounds, HTML prototypes, and offline demos.
FAQs
Base64 encoder and decoder questions
Is Base64 encryption?
No. Base64 is an encoding format, not encryption. Anyone can decode it without a secret key.
What is URL-safe Base64?
URL-safe Base64 replaces characters that can be awkward in URLs, using - and _ instead of + and /.
Can I convert images to Base64?
Yes. Upload or drag an image into the drop area to generate a Base64 string or a complete data URL.
Does this tool upload my data?
No. The conversion runs in your browser with Vanilla JavaScript and does not call an API.