How to Update Your Pinterest Profile Picture and Bio
Changing your Pinterest profile picture
To change your profile picture, log in to Pinterest, mouse over your name in the top-right corner of the Pinterest home page, and choose Settings from the drop-down menu. When the Settings page appears, scroll down a bit to see your Image options.
You have three choices:
Upload an Image: To upload an image from your computer, click this button. The button changes instantly to a text field and a Browse button. Click the Browse button to open the Choose File to Upload dialog box. Then navigate through your files to seek out your image, select it, and click the Open button to upload it to Pinterest.
Refresh from Facebook: If you've updated your profile image on Facebook and want to use it here, click this button. This option appears only if you have Facebook integrated with your Pinterest account.
Refresh from Twitter: Like the Facebook button, this button changes your profile image to the one you’re currently using on Twitter. This option appears only if you have Twitter integrated with your Pinterest account.
An ideal profile image is square. Also, it must at least be 200 x 200 pixels in size, or it will appear pixelated and distorted on your profile page.
Updating your Pinterest bio
A bio helps tell others on Pinterest about you. When someone visits your profile page, your bio is displayed just below your profile picture in the left column.
To update your bio, log in to Pinterest, mouse over your name in the top-right corner, and choose Settings from the drop-down menu. (You can also find it by clicking your name or visiting your main profile page and clicking the Edit Profile link right under your picture in the left column.)
To update your bio, adjust the About section of the resulting form accordingly. On this form, you can also update various other personal details, such as your name, location, and website.