Contact

Bug reports, corrections, tool requests and advertising enquiries are all welcome. We read everything and usually reply within two working days.

Email hello@hashtoolbox.online Please never include real passwords, API keys or hashes from production systems in an email.

Compose a message

This form has no server behind it — by design, nothing is submitted anywhere. It simply opens your own email client with the message pre-filled, so you keep control of what you send.

Open in email client

Before you write

  • "Can you recover my password / crack this hash?" No — and no one can, if it was salted or random. The MD5 page explains why "decrypt" services only recognise inputs someone already hashed.
  • Hash values disagree with another tool? Check for a trailing newline and character encoding first; both change a digest completely.
  • Reporting a bug? Include your browser and version, the tool, the exact input shape (never the real secret), and what you expected.