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Favicon Generator | Create favicon packages and previews locally

Generate a complete favicon package — all standard sizes from 16px to 180px plus the HTML snippet — from one image, with live preview. The one-stop favicon tool for web developers.

Last updated: June 2026 · Free · No sign-up required

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Drag & drop your logo image here

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Frequently Asked Questions

What is a favicon generator?

A favicon generator is a free online tool that converts standard images (such as PNG, JPG, or SVG) into browser-compatible favicon formats (.ico, and multiple PNG sizes) for websites.

What sizes are included in the generated favicon package?

The download package includes standard formats required by modern browsers and operating systems: favicon.ico (containing 16x16, 32x32, and 48x48 sizes), favicon-16x16.png, favicon-32x32.png, apple-touch-icon.png (180x180), and android-chrome icons (192x192 and 512x512).

Is this favicon generator free?

Yes. It requires no signup, features no watermarks, and offers unlimited generations with 100% free downloads.

Are my uploaded images secure?

Yes. Your image is loaded, cropped, and resized directly on your device using HTML5 Canvas APIs inside your browser. No image data is uploaded to any server.

What HTML code should I use to install the favicons?

The tool generates a custom HTML snippet that you can copy and paste into your website's <head> section to link the generated favicon files.

Does this tool support SVG source images?

Yes. Any image format supported by your web browser (including SVG, PNG, JPG, and WebP) can be used as the source file.

Quick reference

Size	Used for
16×16	Browser tab
32×32	Taskbar/shortcuts
48×48	Windows site icons
180×180	Apple touch icon
192/512	Android/PWA manifest

info Favicon Generator

Free image tools calculator — enter your numbers and get an instant, accurate result.

info Private by design

Everything runs locally in your browser. No uploads, no accounts, no tracking.

info Works everywhere

Fully responsive and mobile-friendly — calculate on any device, any time.

info Educational

Includes the formula and step-by-step explanation so you understand the math, not just the answer.

Interpretation guide

Design rule	Why
Bold, simple mark	Detail vanishes at 16 px
Strong contrast	Tabs render on light and dark themes
Square source ≥ 512 px	Clean downscales at every size

lightbulb Worked example

Let's say you are using the Favicon Generator. Generate professional favicon packages in seconds. Upload an image to preview, crop, and package all standard sizes in a single download package. Processes 100% locally. Enter the values that match your situation into the input fields and press calculate — using realistic numbers makes the result directly useful for you.

Result: The calculator instantly applies the formula Favicon set = source image center-cropped square → resampled to 16/32/48/180 px and returns the result with appropriate precision.

What this means: Read the result in the context of what you are measuring. The step-by-step breakdown lets you confirm the math and understand which input most affects the outcome.

Formula & methodology

Formula: Favicon set = source image center-cropped square → resampled to 16/32/48/180 px

The Favicon Generator is built on a well-established calculation method. It uses the formula Favicon set = source image center-cropped square → resampled to 16/32/48/180 px to turn your inputs into a reliable result. Generate professional favicon packages in seconds. Upload an image to preview, crop, and package all standard sizes in a single download package. Processes 100% locally. The steps are shown on the page so you can follow the reasoning from input to output.

Upload any image (PNG, JPG, SVG) — processing is local; nothing uploads to a server.
The tool square-crops and resamples to the standard favicon sizes.
Download the set and paste the provided <link> tags into your <head>.

Worked example: a 1024 px logo becomes crisp 16/32/48/180 px icons; the 16 px version is the acid test — if the mark is still recognisable there, the favicon works.

Frequently asked questions

What sizes does a favicon need?

The Favicon Generator is a free online tool that generate professional favicon packages in seconds. upload an image to preview, crop, and package all standard sizes in a single download package. processes 100% locally. You enter a few values, and it returns an accurate result together with a step-by-step explanation, so it works as both a calculator and a quick reference for the underlying concept.

ICO or PNG — which format?

The Favicon Generator is free, private, and accurate: it runs entirely in your browser (no uploads, no accounts), applies the standard calculation, and explains each step so you can verify the result. Generate professional favicon packages in seconds. Upload an image to preview, crop, and package all standard sizes in a single download package. Processes 100% locally. There is no limit on usage, and it works on any device.

What HTML do I add?

In the page head, add: <link rel='icon' type='image/png' sizes='32x32' href='/favicon-32.png'> plus the 16 px version, and <link rel='apple-touch-icon' href='/apple-touch-icon.png'> for iOS home screens. The generator prints the complete snippet with your downloaded file names, and modern browsers also auto-detect favicon.ico from the site root as a fallback.

Why does my favicon look blurry?

The 16×16 favicon is the usual culprit: your source image is downsampled to 16 pixels, and fine details, thin lines, and small text collapse into mush. Design the favicon at a large size with bold shapes and high contrast, and preview the 16 px version before shipping. The generator resamples with quality filtering and shows every size so you catch blur before deployment.

How do I force browsers to refresh a favicon?

Enter the required values into the input fields and press the calculate button. The tool applies the formula Favicon set = source image center-cropped square → resampled to 16/32/48/180 px and returns the result with a short explanation of each step, so you can check the working yourself.

What does the Favicon Generator do?

Generate professional favicon packages in seconds. Upload an image to preview, crop, and package all standard sizes in a single download package. Processes 100% locally. The calculator takes your inputs, applies the standard calculation, and returns a clear result so you can make an informed decision without doing the math by hand.

What formula does the Favicon Generator use?

It processes the source image as Favicon set = source image center-cropped square → resampled to 16/32/48/180 px, generating all standard favicon sizes in one package. Upload an image, preview the crop, and download the complete set with the correct file names for every platform. All processing happens locally in your browser, so your image never leaves your device.

Is the Favicon Generator free and private?

Yes — the Favicon Generator. There is no sign-up, no paywall, no trial, and no limit on how many calculations you can run. CalcaTools covers its costs with non-intrusive display advertising, so the calculator itself never asks for payment or restricts any feature.

How accurate is the Favicon Generator?

The Favicon Generator applies the standard formula: Favicon set = source image center-cropped square → resampled to 16/32/48/180 px. It is tested against published worked examples before launch and uses native double-precision arithmetic, so results are accurate to typical precision for the values you enter — with no intermediate rounding that could distort the answer.

Explore the full image toolkit

Every CalcaTools image tool — compress, resize, convert, and remove backgrounds — without uploading your files.