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Favicon Generator

Creates common favicon sizes online from a source image. It is for turning a logo or mark into browser-ready icons.

Processing

Runs in your browser. The file and result are not sent to Utilio servers.

How Utilio handles dataWhy files stay on your devicePrivacy Policy

Favicon Generator

Source image

Live preview. Files stay on this device.

Settings

What to open next

Related tools and guides for the same job.

Compress ImagePrepare product photos, blog images, and profile pictures for a website.Resize ImageFit images into CMS, marketplace, avatar, or banner size requirements.Crop ImageCrop product photos, screenshots, thumbnails, and profile images.Convert ImageConvert photos to WebP for web performance.Image UpscalerCreate a larger preview image when the source is slightly too small.JPG to PDFTurn phone photos of documents into one PDF attachment.

What Favicon Generator does

Use Favicon Generator when you need to generate favicon files online from a square logo or app mark.

When to use it

  • Generate favicon files online from a square logo or app mark.
  • Prepare icons for browser tabs, bookmarks, and home screen usage.
  • Check whether a logo still reads at small sizes.

How to use it

  1. Add a clean source image, preferably square and high contrast.
  2. Generate the favicon set.
  3. Preview the smallest sizes and replace overly detailed artwork if needed.

What to check

  • Thin text and complex illustrations usually fail at 16x16.
  • Use transparent PNG source when the icon should not sit on a solid box.

Data, formats, and limits

What stays on your device and what is sent

Runs in your browser. The file and result are not sent to Utilio servers.

Supported formats

Supported: PNG, JPG, JPEG, WebP, AVIF. Not supported: HEIC, HEIF, TIFF, BMP, SVG, PDF.

File limits and browser requirements

  • Up to 40 MB per image
  • Image decoding depends on the browser; some formats or color profiles may not open on every device.
  • Very large pixel dimensions can exceed browser canvas or memory limits even when the file size is below the limit.

Known limits

  • Image decoding depends on the browser; some formats or color profiles may not open on every device.
  • Very large pixel dimensions can exceed browser canvas or memory limits even when the file size is below the limit.

Troubleshooting

  • If the image does not load, check the file format and try opening it directly in the browser.
  • If processing stalls on a phone or older laptop, reduce the image resolution and try again.
  • If the result looks soft or too large, adjust quality, dimensions, or output format.
All image toolsPrivacy PolicyHow Utilio handles data

Common questions

What does Utilio receive?

Runs in your browser. The file and result are not sent to Utilio servers.

What is it useful for?

Use it when you need to generate favicon files online from a square logo or app mark. Start by adding a clean source image, preferably square and high contrast.

Do I need an account?

No. You can use this tool without creating an account.

Can I use it on a phone?

Yes. For large files, complex previews, or careful review, a browser on a computer is usually more comfortable.

How do I get a reliable result?

Add a clean source image, preferably square and high contrast. Then generate the favicon set. Thin text and complex illustrations usually fail at 16x16.

Which formats are supported?

Favicon Generator supports PNG, JPG, JPEG, WebP, AVIF. It does not support HEIC, HEIF, TIFF, BMP, SVG, PDF.

What file size works best?

Up to 40 MB per image. Browser memory and device speed can still affect large files.

Why did I not get the result I expected?

Image decoding depends on the browser; some formats or color profiles may not open on every device. If the result still looks wrong, try a smaller or simpler input and review the output before using it.

Does Utilio use my input or results to train AI?

No. Utilio does not use files, pasted text, settings, generated values, or results from this tool to train AI models.