How to Change Your Logo in Blogger Like a Pro

Changing your blog's logo and favicon in Blogger is more than just a simple update—it’s a smart branding decision that separates amateurs from professionals. In this comprehensive guide, you will learn everything you need: from designing optimized visuals to advanced customization techniques, compatibility across devices, and troubleshooting common issues. Follow along, and your blog will soon reflect the polish and authority of a seasoned pro.

1. Why It’s Important to Customize Your Logo and Favicon

At first glance, changing a logo might look like a minor tweak—but its impact on branding is massive:

Professionalism: custom logo instantly signals credibility. Default Blogger visuals look generic and unmemorable.
Brand recognition: Consistent visuals increase recall and bring visitors back.
SEO benefit: A favicon enhances visual identity in browser tabs, bookmarks, and search results (some browsers display favicons there).

Whether you’re aiming for a polished personal blog or a sleek professional portfolio, these assets set the first impression.

2. Gathering Your Assets: Design and Format

2.1 Header Logo Requirements

A header logo needs to fit nicely within your blog's layout while looking crisp on all screens. Here's what to consider:

Dimensions: Standard ~320×100 px, but up to 1000 px wide if your template supports it.
File type: PNG with transparency or SVG for small file size and sharp scaling.
Size limit: Keep under 50 KB to avoid slow load times.
Retina-ready: Design at double resolution (e.g. 640×200 px) then scale down in CSS or via Blogger's options.

2.2 Favicon Essentials

Favicons are tiny icons (16×16 to 32×32 px) displayed in browser tabs and bookmarks:

Dimensions: Choose 16×16, 32×32, or even 48×48 for high-res browsers.
File type: ICO is classic, PNG is widely supported, and SVG is possible for modern browsers.
File size: Keep it under 100 KB, ideally 20–50 KB.
Design tip: Use a clear, simple symbol or monogram—too much detail will blur.

3. How to Upload the Header Logo

Log in to Blogger and go to Theme → Layout.
Locate the Header gadget (along the top) and click the ✎ edit icon.
Choose From your computer or enter a URL if you host the image elsewhere.
Choose placement:
- Instead of title and description – hides text and displays logo.
- Behind title and description – good for decorative backgrounds.
- Description after image – keeps text visible under logo.
Use Shrink to fit or manually set width/height. Retina users may disable shrink and use CSS.
Save and review on desktop and mobile.

If it looks blurry or uneven, adjust CSS in Theme → Edit HTML or via the Customize → Advanced → Add CSS panel.

4. How to Change Favicon in Blogger

4.1 Using the New Blogger Interface (2025+)

Go to Settings → Basic / Favicon.
Upload your .ico or .png file (< 100 KB).
Save settings.
Clear your browser’s tab and favicon cache or use incognito to see changes.

4.2 Using the Layout Editor (Older Version)

Go to Layout.
Find the Favicon gadget (usually at top left) and click 📝 Edit.
Upload the file and save.

Note: Favicons can be cached heavily—expect some delay. Check on different browser/device.

5. Advanced Users: Manual Customization via HTML/CSS

Manual insertion allows hosting on a CDN or customizing across devices.

Edit your template via Theme → Edit HTML, just before the closing </head> tag.

5.1 Responsive Logo CSS

<style>

.header img, .Header .Image {

  max-width: 100%;

  height: auto;

  display: block;

}

img.header-logo {

  height: auto;

  max-height: 80px;

}

@media (max-width: 600px) {

  img.header-logo {

    max-height: 60px;

  }

}

</style>

This ensures your logo looks crisp everywhere without manual resizing.

6. Optimizing Your Assets for Performance & Clarity

Asset	Format	Dimensions	Max Size	Best Practices
Header logo	PNG/SVG	320×100–1000×300 px	≤ 50 KB	Use transparency and retina resolution
Favicon	ICO/PNG	16×16–48×48 px	≤ 100 KB (ideal 20 KB)	High contrast symbol, simple design

Use tools like TinyPNG, ImageOptim, or realfavicongenerator.net to compress and export multiple icon sizes.

7. Testing & Troubleshooting Checklist

Logo blurry?
- Use PNG or SVG, not JPEG.
- Ensure actual pixel dimensions meet display size.
- Disable Blogger's shrink or adjust CSS.
Favicon not updating?
- Clear cache, use incognito or a different browser.
- Check you uploaded via the correct interface.
- Use manual <link> method as fallback.
Layout breaks?
- Check CSS adjustments for header area (e.g. max-width).
- Ensure units in CSS match layout containers.

8. Full Step-By-Step Summary

Design/resize header logo (PNG/SVG ≤ 50 KB, retina‑ready).
Generate favicon (16×16–48×48 px, PNG/ICO, ≤ 100 KB).
Upload header logo via Layout → Header gadget.
Upload favicon via Settings → Favicon or Layout gadget.
(Optional) Insert manual HTML <link rel="icon"> tags in template.
Add responsive CSS in Edit HTML or Customize → Advanced.
Compress images and test load‑times on desktop/mobile.
Clear cache and verify display on multiple devices and browsers.

9. Common Questions From Bloggers

Q: Should I use SVG for my favicon?

A: SVG favicons work in modern browsers but may not be displayed in older ones. Best practice is to offer favicon.ico and PNG versions along with SVG.

Q: My logo compresses badly, any solutions?

A: Use SVG if possible. Otherwise, export at twice the display resolution and resize only via CSS.

Q: I don’t see a Layout edit option, what now?

A: Custom or downloaded templates might remove gadgets. In that case, manually insert code via Edit HTML and backup your theme first.

10. Final Thoughts

By following this step‑by‑step handbook, you’ll master not only how to replace default visuals, but how to elevate your blog’s appearance and brand identity. From polished header logos to professional favicons each piece helps you stand out online.

If you'd like help designing an SVG logo, writing CSS snippets, or hosting icons on a CDN you know who to ask: I’m happy to help you level up your Blogger branding!