Favicon Checker: Find and Download Website Favicons [2025]

1. URL Input and Processing

When you enter a URL, the tool first prepares it by:

• Trimming any leading/trailing whitespace
• Ensuring the URL starts with 'http://' or 'https://'
• Extracting the base URL (e.g., 'https://example.com')

2. Favicon Location Strategies

The tool employs a multi-step strategy to find the favicon:

Standard Paths

It first checks common locations:

• /favicon.ico
• /apple-touch-icon.png
• /apple-touch-icon-precomposed.png

3. Client-Side Image Checks

For each potential favicon URL (both standard paths and those found in link tags):

• An Image object is created in JavaScript.
• The src attribute is set to the favicon URL.
• onload and onerror events are used to determine if the image exists and is accessible.
• This is done entirely client-side, avoiding unnecessary server requests.

4. Download Functionality

The download feature works differently for ICO and other formats:

• ICO: Direct download by creating an a tag linking to the favicon.ico URL.
• PNG/JPG: If the favicon isn't already a PNG or JPG, a canvas element is used to convert the image, then download it. This ensures cross-origin compatibility and the correct format.