Cookies vs Local Storage: Which is Best?

Cookies vs Local Storage – Both are used for the same purpose, but they differ in how they are stored and accessed.

What is a Cookie?

A cookie is a small text file that is stored on your computer or mobile device when you visit a website. Cookies are used to store information about you, such as your preferences, or to track your activity on a website. The information stored in a cookie can be used to customize your experience on the website.

What is Local Storage?

Local storage is a way to store data on the client side, usually in the browser. It is similar to a cookie, but it can store more data and is not sent back and forth between the server and the client. Local storage is stored in the browser, so it is not shared across different devices or browsers.

Differences Between Cookies and Local Storage

• Storage Size: Cookies can only store a limited amount of data, usually up to 4KB, while local storage can store up to 5MB.
• Expiration Date: Cookies have an expiration date, so they are automatically deleted after a certain period of time. Local storage does not have an expiration date, so it will stay on the client’s computer until it is manually deleted.
• Security: Cookies can be used to track a user’s activity and can be used for malicious purposes. Local storage is more secure, as it is not sent back and forth between the server and the client.

When to Use Cookies and Local Storage

Cookies

Cookies are best used for storing small amounts of data, such as user preferences, or tracking user activity. Cookies can also be used to store session information, such as a user’s login credentials.

Local Storage

Local storage is best used for storing large amounts of data, such as user profiles, or complex data structures. Local storage is also a good choice for storing data that needs to be accessed quickly, as it is stored locally and can be accessed without making a request to the server.

Conclusion

Cookies and local storage are both useful tools for storing data on the client side. Cookies are best used for storing small amounts of data, while local storage is better for storing large amounts of data. Both have their advantages and disadvantages, so it is important to choose the right one for your needs.