Generate MD5, SHA-1, SHA-256, and SHA-512 hash digests of your text, all at once.
SHA-256 is recommended for most security purposes — MD5 and SHA-1 are still shown here for compatibility but are not considered collision-resistant anymore.
Not every barcode is interchangeable — a retail scanner expects a specific format, and picking the wrong one means a code that simply won't scan at checkout.
Base64 output looks scrambled, which is exactly why people mistake it for security. It isn't — it's encoding, not encryption, and the difference matters.
A UUID looks like random noise, but the format is precise, and the odds of ever generating a duplicate are so small the math is almost more interesting than the ID itself.