Anonymise a text before sharing it

Share the text, not the personal data

There are many times you need to show a text without revealing who is in it: pasting a conversation into an AI assistant, sending a support ticket to a supplier, asking a colleague for advice on a contract, publishing an example in a forum or a report, or filing a bug with real data in the logs. Removing the personal details by hand is slow, and it is easy to miss the second mention of an email or a number buried in a paragraph. This tool finds the kinds of data that have a recognisable shape and replaces them for you.

What it recognises on its own

• Email addresses and, optionally, web links.
• Phone numbers in national and international formats.
• IBAN bank account numbers, validated with the standard check, so a random string of letters and digits is not mistaken for an account.
• Card numbers, checked with the Luhn algorithm, so an ordinary long number is left alone.
• Identity numbers: Spanish DNI and NIE with their check letter, Spanish CIF, and US Social Security number format.
• IP addresses.

Names and other words: you tell it

People's names, company names, street addresses and job titles have no fixed shape, and no simple tool can find them reliably. Instead of pretending, this one lets you list them, one per line, and it replaces every occurrence, whatever the capitalisation. Add the names of the people involved, the company and any address before you press copy.

Three ways to replace

A plain label such as [EMAIL] is the simplest. Numbered labels, such as [EMAIL_1] and [EMAIL_2], keep the identity of each value: the same value always gets the same number, so a reader or an AI assistant can still follow who said what. In that mode a key is shown, listing which label stands for which original value, so that you can put the real values back into an answer. Keep that key private. Black blocks replace values with a solid bar of similar length.

What it does not do

Anonymising is a risk-reduction step, not a guarantee. The tool cannot see personal details that have no recognisable format: names you did not list, indirect clues such as a job title, a rare place or a date that together identify someone, or data inside images. Read the result in full before sharing it, especially if the text is sensitive or covered by data protection law. Text is processed in your browser; nothing is stored or sent.