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Sync settings

Choose what your account keeps in step on every device where you are signed in.

  • My tools

    Always synced: the tools on your board, their order and size.

  • The windows open on your start page, including what you typed in them.

  • Every note in the notepad – on the notepad page, on your board and in windows.

  • Every list of website shortcuts – on the shortcuts page, on your board and in windows.

  • Every grid in the cover grid maker – on its page, on your board and in windows.

  • Every list of bookmarked organisations in the OIN lookup – on its page, on your board and in windows.

  • Keeps your pipeline and saved recipes on all your devices. Your files are never synced – only the steps and settings.

Turning something off removes it from your account straight away. Your devices keep their own copy.

Notifications

Tools that can tell you about something new while a Synsi tab is open, even when you are in another tab or app. Choose them for this browser.

This browser cannot show notifications from websites.
Notifications are blocked for this site. Allow them in your browser’s site settings (the icon left of the address), then switch them on here.

  • Says “New message” while a Synsi tab is open – never who wrote it or what.

Your choice is stored in this browser only. Notifications never show personal content such as a message or a number. They work while a Synsi tab is open; closed tabs get none.

Browse all tools →

Strong Password Generator

Create strong, truly random passwords in your browser. Choose the length and character sets and see how strong the result is.

My tools →

Entropy: —

Runs in your browser – your data never leaves your device Also available via our free API

How to use the Password Generator

  1. 1 Set the length with the slider – 16 characters or more is recommended.
  2. 2 Choose which character sets to include and whether to exclude look-alike characters.
  3. 3 Click Generate and copy the password into your password manager.

What makes a password strong?

Strength comes from length and randomness. A password chosen by a computer from a large set of characters is far harder to guess than one a human invents, because people follow predictable patterns such as capital letter first and digits and an exclamation mark at the end.

Entropy explained

Entropy measures how unpredictable a password is, in bits. It is calculated as length × log₂(number of possible characters). Each extra bit doubles the number of guesses an attacker needs.

Entropy Rating Example
< 50 bits Weak 8 lowercase letters
50–70 bits Fair 10 mixed characters
70–100 bits Strong 14 characters, all sets
≥ 100 bits Very strong 16+ characters, all sets

Generated safely

Passwords are created in your browser using the Web Crypto API, a cryptographically secure random number generator. Each selected character set is guaranteed to appear at least once, and characters are picked without bias. Nothing is sent to our servers or stored.

Best practices

  • Use a different password for every account.
  • Store passwords in a password manager instead of reusing or writing them down.
  • Turn on two-factor authentication wherever possible.
  • Exclude look-alike characters (I, l, 1, O, 0, o) if you need to type the password by hand.

Frequently asked questions

How long should my password be?

At least 12 characters, and 16 or more for important accounts such as email and banking. Longer is always better when a password manager remembers it for you.

Are the generated passwords stored?

No. They are generated on your device and disappear when you leave the page. We never see them.

Why exclude ambiguous characters?

Characters like l, 1 and I or O and 0 look alike in many fonts. Excluding them avoids typos when you have to read or type a password manually, at the cost of a little entropy.

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