FaviconX

Beginner Guides

PNG vs ICO vs SVG: Which Favicon Format Should You Use?

By Alex Rivera, Web Developer Published: August 10, 2026 Updated: August 10, 2026 4 min read

TL;DR

To add a favicon, upload a 32×32 (or 16×16) PNG and an ICO file to your site root and add <link rel="icon" href="/favicon.ico"> inside your <head>. For best results on every platform, also add a 16×16 and 32×32 PNG, an Apple touch icon and a web manifest — the snippet below does all of it.

PNG vs ICO vs SVG: Which Favicon Format Should You Use?

When it comes to creating a favicon for your website, understanding the different file formats available is crucial. Favicons are the small icons that appear in browser tabs, bookmarks, and other places, making your brand easily recognizable. In this guide, we'll explore the three most common favicon formats: PNG, ICO, and SVG, and help you determine which one is best suited for your needs.

Understanding Favicon Formats

Each favicon format comes with its own set of advantages and disadvantages. Here, we’ll break down PNG, ICO, and SVG formats to help you make an informed decision.

1. PNG (Portable Network Graphics)

PNG is one of the most widely used image formats on the web. It supports transparent backgrounds and offers high-quality images without losing detail. Here are some pros and cons:

  • Pros:
    • High quality with lossless compression.
    • Supports transparency, allowing for versatile designs.
    • Compatible with all modern browsers.
  • Cons:
    • File size can be larger compared to ICO.
    • Limited to a single size and resolution.

PNG is an excellent choice for web developers and designers looking for quality and flexibility in their favicon design, especially if you want to maintain transparency.

2. ICO (Icon File Format)

ICO is a format specifically designed for icons. It can contain multiple resolutions and color depths, making it a versatile option for favicons. Let's look at its pros and cons:

  • Pros:
    • Can store multiple image sizes in one file, from 16x16 to 256x256 pixels.
    • Widely supported across all browsers, including older versions.
    • Optimized for use as a favicon.
  • Cons:
    • Does not support transparency as well as PNG.
    • File format is less flexible for modern web design needs.

ICO is ideal for website owners looking for compatibility and ease of use, especially for sites that may attract users on older browsers.

3. SVG (Scalable Vector Graphics)

SVG is a vector format that allows for scalable images without loss of quality. This format is becoming increasingly popular for favicons due to its unique benefits:

  • Pros:
    • Infinitely scalable, ensuring crisp images on all screen sizes and resolutions.
    • Smaller file sizes compared to raster images like PNG and ICO.
    • Can be animated and styled with CSS, offering creative flexibility.
  • Cons:
    • Not supported by all browsers, particularly older versions.
    • Requires a bit more technical know-how to create and implement.

If you are a designer looking to push the boundaries of favicon design and ensure compatibility with high-resolution displays, SVG is a fantastic option.

Choosing the Right Format for Your Favicon

When deciding between PNG, ICO, and SVG for your favicon, consider the following:

  1. Browser Compatibility: If your audience may use older browsers, ICO might be the safest choice.
  2. Design Flexibility: For intricate designs with transparency, PNG is a strong contender.
  3. Scalability and Modern Design: If you're looking for a contemporary approach, SVG is worth considering.

Ultimately, the best choice will depend on your specific needs, the design of your website, and your audience's preferences. By understanding the strengths and weaknesses of each format, you can create a favicon that enhances your brand's visibility and user experience.