Developer / Encoding
Base64 Converter
Encode and decode Base64 strings without sending anything to a server. Convert text to Base64 or decode Base64 back to readable text directly in the browser.
encode
Mode
Off
URL-safe
51
Input bytes
68
Output bytes
Loaded sample text
Input
Plain text or Unicode content
Output
Ready to copy or download
VG9vbHBvcnQgbWFrZXMgcXVpY2sgYnJvd3NlciB0b29scyBlYXNpZXIgdG8gcmV1c2Uu
Why this one is useful
It handles both normal Base64 and URL-safe variants, which makes it useful for JWT-like payloads, encoded parameters, and copied test data.
Unicode text support matters in practice because plain `btoa`/`atob` handling often breaks once real-world text enters the picture.
Data URL stripping and Base64 normalization cut down the tiny cleanup steps that usually get in the way during debugging.
Common uses
Checking encoded query parameters and test payloads.
Preparing text for transport through systems that expect Base64.
Decoding API responses or copied logs during debugging.
Switching output back into input to chain quick transformations.
Why this page has value
Base64 pages are only useful if they handle the messy real-world cases. This one covers normal Base64, URL-safe variants, Unicode text, and common cleanup cases such as data URL prefixes.
Workflow notes
A lot of Base64 work happens in the middle of debugging or content transport. Fast encode, decode, normalize, and copy actions matter more here than decorative output.
Privacy and trust
Input stays in the browser during encoding and decoding, which matters when the text contains tokens, copied payloads, customer values, or internal logs.
Does this support URL-safe Base64?
Yes. The converter handles URL-safe variants and includes normalization helpers so copied payloads are easier to decode cleanly.
Can it decode Unicode text correctly?
Yes. The page is built to handle Unicode content instead of only basic ASCII-style inputs.
Can I use it with data URLs or copied blobs?
Yes. If the input includes a data URL prefix, the strip-prefix helper removes the wrapper so you can focus on the encoded part directly.
Related tools
People who use this tool often end up needing one of these next.