Is obfuscation the same as encryption?

No. The masked characters are replaced, not encrypted, so the original cannot be recovered from the output. The visible characters at each end are still revealed, so keep that number small for short secrets.

How many characters is it safe to show?

Showing only a handful, such as the last 4, is a common convention for card numbers and keys. For short secrets, every visible character meaningfully reduces the remaining search space.

String Obfuscator: Mask Secrets, Tokens & IBANs

Obfuscate a string (like a secret, an IBAN, or a token) to make it shareable and identifiable without revealing its content.

About String Obfuscator

Mask the middle of a secret, API key, IBAN or token while keeping the first and last few characters visible so it stays recognizable. You choose how many characters to keep at each end, the replacement character, and whether whitespace is left in place to preserve grouping. It runs locally, so the original value is not sent anywhere.

Common uses

Share which API key or token you mean in a ticket or chat without exposing it.
Mask an IBAN or card-like number in a screenshot or document.
Redact credentials before pasting logs or config into an issue.
Produce masked example values for documentation.

FAQ

Is obfuscation the same as encryption?: No. The masked characters are replaced, not encrypted, so the original cannot be recovered from the output. The visible characters at each end are still revealed, so keep that number small for short secrets.
How many characters is it safe to show?: Showing only a handful, such as the last 4, is a common convention for card numbers and keys. For short secrets, every visible character meaningfully reduces the remaining search space.