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Gravatar Checker

Check if an email address has a Gravatar profile image. See the avatar, get the MD5 hash, and copy the image URL for use in your applications.

About this tool

Gravatar (Globally Recognized Avatar) is a service that lets people set a profile image tied to their email address. When someone uses that email to sign up for a site that supports Gravatar, their profile image automatically appears. This tool checks if a given email address has a Gravatar and shows you the avatar along with the image URL and MD5 hash you need to use it in your own applications.

How Gravatar works

Gravatar uses an MD5 hash of the email address to look up the avatar. The email is lowercased and trimmed before hashing, then the hash is used to construct a URL like gravatar.com/avatar/{hash}. This means you never need to store or transfer the actual email address to display someone's avatar. Just compute the hash and fetch the image.

Use cases for email marketers

Gravatar data can tell you a lot about your subscribers. Email addresses with Gravatars are more likely to be real people versus disposable or temporary addresses. You can use Gravatar presence as a signal in your email validation workflow. It does not guarantee validity on its own, but combined with MX record checks and disposable email detection, it helps build a clearer picture of subscriber quality.

If you are building subscriber profiles or dashboards, Gravatar provides a free way to show profile images without asking users to upload photos. Many CRMs, comment systems, and email clients already use Gravatar to display subscriber avatars.

For developer-focused use, the Gravatar URL supports size parameters (s=80 for 80x80 pixels), default image fallbacks (d=identicon for generated patterns, d=robohash for robot avatars), and rating filters. Check the Gravatar documentation for the full API reference.

Frequently Asked Questions

What is a Gravatar?

Gravatar stands for Globally Recognized Avatar. It is a free service from Automattic (the company behind WordPress) that lets you set a profile image linked to your email address. Websites and services that support Gravatar automatically display your avatar when you use that email address to comment, sign up, or interact.

How does Gravatar identify email addresses?

Gravatar uses the MD5 hash of the lowercase, trimmed email address. This means the actual email address is never exposed in the image URL. Only the one-way hash is used, so you cannot reverse it to get the email address. This provides a degree of privacy while still linking the avatar to the email.

Does having a Gravatar mean the email is valid?

Not necessarily. Having a Gravatar means someone created a Gravatar account with that email at some point, but the email could have been abandoned or deactivated since then. However, the presence of a Gravatar is a positive signal that the email address belongs to a real person. Combine it with MX record validation and other checks for more reliable verification.

Can I use Gravatar images in my emails?

Yes. You can include Gravatar images in your HTML emails using a standard img tag pointing to the Gravatar URL. This works well for personalized emails or subscriber profiles. Keep in mind that some email clients block images by default, so always include alt text. The image loads from Gravatar's CDN, so it does not add to your email file size.

What happens if an email has no Gravatar?

If an email does not have a Gravatar, the API returns a default image based on the d parameter you specify. Options include 'identicon' (geometric pattern), 'monsterid' (generated monster), 'wavatar' (generated face), 'retro' (8-bit style), 'robohash' (robot), or 'blank' (transparent). You can also specify your own default image URL.

Is checking Gravatar free?

Yes. The Gravatar API is completely free with no rate limits for typical use. You can check as many email addresses as you need. The images are served from Gravatar's CDN, which is fast and reliable. There is no API key required, just construct the URL with the MD5 hash.

What sizes are available for Gravatar images?

Gravatar images can be requested at any size from 1 to 2048 pixels by adding the s parameter to the URL (e.g., ?s=200 for a 200x200 image). The default size is 80x80 pixels. For email use, 40-80 pixels is typical. For profile pages, 200-400 pixels works well. The images are always square.

Is there a privacy concern with Gravatar?

The MD5 hash in the Gravatar URL cannot be easily reversed to reveal the email address. However, if someone has a list of email addresses, they could hash each one and check for matches against known Gravatar URLs. For most use cases, this is not a significant concern. Gravatar also supports HTTPS for secure image delivery.

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