Encryption & Security Tools
This category holds the local-only security utilities: a hash generator, a JWT decoder, and an AES encrypt/decrypt tool. Each one processes what you type in the browser tab and keeps it off any server.
TOOLS IN THIS CATEGORY
01 / LISTWHAT YOU CAN DO HERE
02 / OVERVIEWThe hash generator and the AES tool both use the Web Crypto API, and the JWT decoder reads a token locally, so nothing typed here leaves the page. AES adds a password and returns ciphertext you can decrypt later with the same password and settings.
Hashing is one-way and is not encryption: you cannot recover the input. AES is reversible with the right password and settings, so it protects confidentiality rather than proving identity. For encoding that can be reversed without a key, use Base64; for protecting data in transit, use HTTPS rather than any browser tool.
- Comparing two files by their digests instead of their contents.
- Verifying that a downloaded file matches the published checksum.
- Storing a non-reversible fingerprint instead of a raw value.
- Encrypting a note or a config snippet with a password before you save or share it.
FREQUENTLY ASKED QUESTIONS
03 / FAQIs a hash the same as encryption?
No. Encryption is reversible with the right key, while a hash is meant to be one-way. A hash proves that two inputs are identical; it cannot give the input back.
Which hash algorithms are supported?
SHA-1, SHA-256 and SHA-512. MD5 is not offered, because the browser hashing API the tool relies on does not provide it.
Should I use MD5 or SHA-256?
SHA-256 for anything security-related. MD5 and SHA-1 are still fine for quick non-security checksums, but they are considered broken for collision resistance.