Base64url decode

Client

Decode URL-safe Base64 to UTF-8 text.

hello

Nearby workflows on Toolcore

  • Base64url encodeURL-safe Base64 encode without padding. when the payload needs a different encoding or escape format.
  • Base64url (URL-safe) encode & decodeUTF-8 ↔ Base64url (RFC 4648: -, _, padding optional on decode)—same bits as Base64, JWT-segment style; client-side. when the payload needs a different encoding or escape format.
  • Base64 & URL encoderUTF-8 Base64 encode/decode and URL component encode/decode in one workspace—paste, transform, copy. when the payload needs a different encoding or escape format.
  • Encoding toolsHub index: Base64 & URL, Base64url, Base32, Crockford, LEB128, ASCII85, Z85, Base58, base-36, bencode, Morse, quoted-printable, URI, Puny… when the payload needs a different encoding or escape format.

About this tool

Accepts unpadded Base64url strings.

Common use cases

  • Base64url decode for quick local checks without uploading data.
  • Copy results into tickets, docs, or classroom notes.

Common mistakes to avoid

  • Unexpected input shape

    See the intro and how-to notes for accepted formats.

FAQ

Is processing local?

Yes—this runs entirely in your browser.

Agent prefill?

Use q or qb for the main text field when supported.

Related utilities you can open in another tab—mostly client-side.