這個工具會保存我的密碼嗎？

不會。密碼只在你的瀏覽器本機產生，不會上傳或保存。

特殊符號一定要開啟嗎？

特殊符號可增加字元池。若特定網站有限制，可關閉特殊符號並增加長度。

16 個字元夠安全嗎？

對大多數一般帳號而言，隨機的 16 字元密碼已相當強；重要帳號建議 20～32 字元。

多久需要更換一次密碼？

疑似外洩、收到異常登入通知或曾與他人共用時應立即更換。

我需要為每個帳戶都設定專屬密碼嗎？

需要。任何一個服務外洩後，重複使用的密碼會被拿去嘗試登入你的其他帳號（帳號填充攻擊）。每個帳戶使用獨一無二的隨機密碼，才能把損害控制在單一服務。

如何取得一組隨機密碼？

拖動長度滑桿選擇 16 個字元以上，勾選大小寫、數字與符號，工具會立即產生密碼；點擊複製按鈕即可使用，點擊重新產生可再換一組。

有什麼安全的方式能儲存密碼嗎？

使用可靠的密碼管理器加密保存，並為管理器本身設定高強度主密碼與雙重驗證。避免存在記事本、聊天室或未加密的檔案中。

密碼安全與否，取決於哪些因素？

四個關鍵：長度（越長越好，建議 16 字元以上）、隨機性（避免單字與個資）、唯一性（每個帳戶不同），以及保存方式（密碼管理器加雙重驗證）。

life tools

Life Tools · Native Secure Computing

🔐 Free online random password generator

快速建立獨一無二、隨機且難破解的密碼。透過 ToolBoy 八段安全進化，即時看懂目前密碼強度。

🛡️ No password uploaded 🎲 Crypto Random ⚡ Instantly generated 🌍 Multilingual and friendly

1Password length and security difficulty

It is recommended that general accounts should be at least 16 characters, and important accounts should be 20 to 32 characters.

Password strength very strong

2Character options

ABuppercase English lettersA–Z ablowercase english lettersa–z 123numbers0–9 #&Commonly used special symbols! @ # $ % ^ & * - _ + = ?

3Advanced settings

Exclude easily confusing I, l, 1, O, 0 Avoid adjacent duplicate characters Each enabled character type appears at least once

Custom negative characters

4Generated security password

intensityvery strong

Password entropy0 bits

Estimated cracking timeover 1,000 years

Safety tips for tool makers

Use different passwords for each website Save with a password manager Turn on two-step verification for important accounts Replace immediately if leakage is discovered

Safety knowledge

Why are random passwords safer?

Attackers will prioritize birthdays, phone numbers, common words, and reused passwords. There is no pattern to a truly random password, and the longer it is and the larger the character pool is, the higher the number of attempts required to brute force it.

Reduce dictionary attack success rate Prevent the spread of account stuffing attacks Increase the cost of brute force cracking Most convenient with a password manager

Password Security Tips

Want to create a secure password? These tips are for your reference

Whether you use a password generator or create your own password, "length, complexity, and uniqueness" are the three keys to creating a password that is difficult to crack.

📏

Use a long string of characters to form a password

Good passwords are difficult to copy or guess. When generating a random password, make sure it is at least 16 characters long to prevent brute force attacks - the longer the string, the longer it takes to crack it exponentially.

🔀

Increase password complexity

Randomly generated strings of words are not only unpredictable, but also do not resemble any single word or name. Please mix uppercase and lowercase letters, numbers, and special symbols to make dictionary attacks completely useless.

🔑

Pick a unique password for each account

Never reuse passwords. Each set of passwords is exclusive to a single account. Even if a certain service is compromised, other accounts will not be compromised. It is most convenient to use a password manager to store it safely.

Why should I use a password generator?

Here are five great reasons to use a strong random password generator:

Hackers can crack weak passwords in secondsCyber criminals can use brute force attacks to test millions of passwords per second, and passwords that are short or related to commonly used words can be compromised almost instantly.
Most people create passwords that are easy to guessPeople tend to use predictable patterns such as birthdays, names, or keyboard sequences, making such passwords vulnerable to dictionary attacks.
Randomly generated passwords are strongerPasswords that are truly randomly assigned uppercase and lowercase letters, numbers, and symbols are far more difficult to crack than passwords conjured up by the human mind.
Malware steals the passwords you enterKeyboard loggers record everything you type. Use a generator with a password manager to autofill to reduce exposure to manual input.
Strong passwords are the first step to online securityComplete account protection can be established with two-factor authentication (2FA) and regular checks for breach notifications.

Free Online Random Password Generator: Create Passwords That Are Really Hard to Crack

Thinking of a new password every time you register a new account is cumbersome and easy to repeat. Toolman Online Password Generator (Online Password Generator) requires no downloading or registration. It can quickly create highly random passwords and instantly displays the password length, entropy value and strength.

What makes a password strong?

Strong passwords should be of sufficient length, random and unique. It is recommended to use at least 16 characters, with a mix of uppercase and lowercase letters, numbers, and common special symbols allowed by the site.

Why do passwords need to be unique?

If multiple websites use the same password, if one of the services is compromised, attackers may use the same information to try to log in to other platforms.

What is password entropy?

熵值以 bits 表示密碼組合的理論隨機程度。熵值越高，代表可能組合越多，但仍應配合安全儲存與雙重驗證。

Password Generator FAQ

Will this tool save my passwords?

No. Passwords are only generated locally in your browser and will not be uploaded or saved.

Do special symbols have to be turned on?

Special symbols can be added to the character pool. If there are restrictions on a specific website, you can turn off special symbols and increase the length.

Is 16 characters safe enough?

For most general accounts, a random 16-character password is quite strong; for important accounts, 20 to 32 characters are recommended.

How often do I need to change my password?

You should replace it immediately if it is suspected of being leaked, if you receive an abnormal login notification, or if it has been shared with others.

Do I need a unique password for each account?

Needed. After any service is compromised, the reused password will be used to try to log in to your other accounts (account stuffing attack). Use unique, random passwords for each account to limit damage to a single service.

What do the most common bad passwords look like?

123456、123456789、12345678、password、qwerty、abc123、111111、iloveyou、admin、000000 長年霸榜，這類密碼駭客幾秒內就能破解，請立即避免使用。

What are the requirements for a good password generator?

使用密碼學等級的安全亂數（CSPRNG）、在本機產生不上傳、可自訂長度與字元類型、不儲存任何結果，並能即時顯示強度讓你判斷是否足夠安全。

How to get a random password?

Drag the length slider to select more than 16 characters, check uppercase and lowercase, numbers, and symbols, and the tool will immediately generate a password; click the copy button to use it, and click Regenerate to change another group.

Is it possible for password generators to be hacked?

風險在於「把密碼傳到伺服器」的產生器。本工具使用瀏覽器內建的 Crypto 安全亂數在你的裝置上產生密碼，全程不連網傳輸，駭客沒有可以攔截的環節。

Is there any secure way to store passwords?

Use a reliable password manager to encrypt and save, and set a strong master password and two-factor authentication for the manager itself. Avoid saving in Notepad, chat rooms, or unencrypted files.

What factors determine whether a password is secure or not?

Four keys: length (the longer the better, 16 characters or more is recommended), randomness (avoid single words and personal information), uniqueness (different for each account), and storage method (password manager plus two-factor authentication).

關於工具人 ToolBoy

工具人 ToolBoy 是一個永遠免費的多合一線上工具平台。我們相信好用的工具不該有門檻：不用註冊、不用下載、打開就能用。從密碼產生器出發，我們正逐步打造涵蓋文件轉換、圖片處理、開發者工具的完整工具箱。

Privacy is our bottom line - all operations involving sensitive data (including password generation) are only completed locally in your browser and will never be uploaded to the server. Let the tool person take care of the trivial matters for you, and you can just concentrate on the important things.