Base64 Encoder / Decoder
Encode or decode Base64 text and files instantly online. Free Base64 converter for JWTs, data URLs, and auth headers — everything runs in your browser.
More
Related tools
String Escape / Unescape
Escape or unescape special characters in strings instantly online. Free tool for embedding strings in JSON, debugging APIs, and copying code.
Image to Base64
Convert any image to a Base64 data URL instantly online, for free. Supports PNG, JPG, GIF, WebP, and SVG — great for embedding images in CSS.
JSON Formatter
Format, validate, and minify JSON online for free. Instantly catch syntax errors, apply clean indentation, and minify with one click — no sign-up needed.
UUID Generator
Generate one or hundreds of random v4 UUIDs instantly online, for free. Perfect for database primary keys, session tokens, and API request IDs.
Frequently asked questions
What is Base64 Encoder / Decoder?+
Encode or decode Base64 in one click — entirely in your browser.
How do I use Base64 Encoder / Decoder?+
Encode plain text to Base64 for use in JWTs, data URLs, or auth headers. Decode a Base64 string back to its original form instantly. Switch between encode and decode mode with one click. Nothing is sent to a server — all processing stays local
Is Base64 Encoder / Decoder free?+
Yes, Base64 Encoder / Decoder is completely free. No account or sign-up required, and all processing happens in your browser — nothing is sent to a server.
Is my data safe when I use Base64 Encoder / Decoder?+
Yes. Base64 Encoder / Decoder runs entirely in your browser using JavaScript and Web APIs — your input is never uploaded, transmitted, or stored on any server.