Base64 Encoder / Decoder
encode and decode Base64 strings and files in your browser
The Base64 Encoder / Decoder on DevLab lets you encode and decode Base64 strings and files in your browser directly in your browser — no installation, no signup, no limits. Encode images to Base64 for CSS backgrounds. Works on all devices and supports keyboard shortcuts for power users.
Try it now — free, instant, no signup
What is Base64 Encoder / Decoder?
Encode and decode Base64 strings and files directly in your browser. Supports standard Base64, URL-safe Base64, and can handle binary file encoding with no size limits.
Developers use Base64 Encoder / Decoderdaily to save time and avoid errors. Instead of writing custom code or searching through documentation, you can get immediate results with a simple paste-and-process workflow. DevLab's Base64 Encoder / Decoder is optimized for speed — results appear as you type with no button clicks required.
All processing happens entirely in your browser using modern JavaScript APIs. This means your data never leaves your machine, making it safe to use with sensitive content like tokens, API keys, or private documents.