UUID Studio

UUID Studio

Base64 Converter

Encode and decode UTF-8 text with standard Base64.

  • đź”’ No data stored or uploaded
  • ⚡ 100% client-side
  • 🆓 Free, no account
Click Convert when ready

Override only when Auto cannot parse your paste. Changing this loads a matching sample into Input — click Convert to run. Use Load sample to cycle every format example.

All conversions

Read-only representations of the same 16 bytes. Every textual form is listed here, not in “Prefer format”.

Paste two values: if both sides are valid JSON, a structural diff appears; otherwise UUID / bytes are compared when both decode to the same format.

A
B

Create or edit JSON here (syntax colors), then format, validate, or convert - same as MongoDB $binary UUID blobs on the Convert tab once detected.

New document

Hash, HMAC, AES-GCM/CBC + RSA-OAEP, codecs, JWT decoding, UUID v4, and secure random - all client-side. JWTs use Base64URL (three segments), not a single MIME Base64 block - use Decode JWT below, not raw Base64 decode.

Examples

  • Text to encode 
    Hello, developers!
  • Base64 to decode 
    SGVsbG8sIGRldmVsb3BlcnMh

About Base64 Converter

Base64 shows up everywhere - Basic Auth headers, embedded images, config values, API payloads - and eyeballing whether a string is encoded correctly is nearly impossible without a proper decoder.

Encode UTF-8 text to standard Base64, or decode a Base64 blob back to readable text, entirely in the browser. Note this is standard MIME Base64, not the URL-safe variant JWTs use - for that, reach for the JWT Decoder instead.

FAQ

URL-safe Base64?
Use the UUID converter tab for URL-safe variants, or JWT decoder for token segments.