Welcome to the gungorkaya.com Ultimate Image to ICO Converter. This tool is engineered to bridge the gap between high-resolution modern design and legacy system compatibility. Whether you have a transparent PNG, a standard JPG, or a modern WEBP file, our engine transforms it into a pixel-perfect .ico file compatible with Windows, Web Browsers, and legacy software.
Core Capabilities & Supported Formats
input Input Formats
We accept all major web image standards. Upload PNG (recommended for transparency), JPG, or WEBP. Max file size is 20MB.
layers Output Logic
The tool generates a "Merged" ICO file containing multiple sizes. If you need raw assets, it also packages individual PNGs into a ZIP archive.
hd High-Res 512px
Unlike older tools that stop at 256px, we support 512x512 pixels. This is essential for modern 4K monitors and high-DPI scaling.
Why "Smart Automation" Beats Manual Controls
You may have seen other converters offering sliders for Bit-Depth (8-bit vs 32-bit), Manual Cropping, or DPI Settings. While these look professional, they are often user-hostile traps.
Creating a valid Windows Icon requires specific standard settings. If you accidentally select "8-bit color," your icon will look grainy and retro. If you crop incorrectly, you lose the aspect ratio.
Our Philosophy: We handle the complex engineering so you don't have to. Our engine automatically:
- Force-enables 32-bit True Color + Alpha Channel (Standard for modern Windows).
- Centers your image on a transparent canvas to maintain aspect ratio without cropping.
- Applies High-Quality Bicubic Resampling to prevent blurriness when downscaling.
Why the 512px Size Matters
Historically, icons topped out at 48px or 256px. However, in the era of 4K and 5K monitors, operating systems often scale icons up significantly.
Furthermore, if you are developing a PWA (Progressive Web App) or an Android application, having a clean 512x512 source asset is mandatory in your manifest. By including this size in your ICO (or downloading the ZIP bundle), you ensure your branding is future-proof.
Frequently Asked Questions
What is an ICO file? expand_more
An ICO file is a container format used by Microsoft Windows and web browsers. Unlike a standard image, one single .ico file can hold multiple images of different sizes and color depths. The computer automatically displays the correct size depending on where the icon is shown (e.g., Desktop vs. Taskbar).
What is the difference between "Merged ICO" and "ZIP"? expand_more
The Merged ICO is a single file (`icon.ico`) that contains all your selected sizes inside it. This is what you upload to your website or use for a Windows folder icon. The ZIP option gives you the individual PNG files for each size, which is useful for developers who need separate assets for Android/iOS apps.
Why should I use PNG input instead of JPG? expand_more
PNG supports transparency. Icons usually are not perfect squares; they have transparent backgrounds (like a circle logo). If you use a JPG, the transparent areas will turn white, resulting in an ugly white box around your icon.
Does this tool support 512x512 pixels? expand_more
Yes. We support generating icons up to 512px. However, you must upload an image that is at least 512px in size. We do not upscale small images to avoid blurry, low-quality results.
Is my data secure? expand_more
Yes, 100%. This tool operates Client-Side. This means the conversion code runs inside your own web browser. Your images are never uploaded to our servers, ensuring total privacy for your intellectual property.
How do I use the generated ICO on my website? expand_more
Rename the downloaded file to favicon.ico and place it in your website's root directory. Then, add this code to your HTML header: <link rel="icon" href="/favicon.ico" type="image/x-icon">.
Can I convert WEBP files? expand_more
Yes, our converter fully supports the modern WEBP format. It will be converted into the standard ICO structure seamlessly.
Why does my 512px option appear disabled (greyed out)? expand_more
Our smart logic prevents upscaling. If you upload an image that is only 200px wide, the 256px and 512px options are automatically disabled. This protects you from generating low-quality, pixelated icons. Please upload a larger source image.
Is this tool free for commercial use? expand_more
Yes. You can use the gungorkaya.com Image to ICO converter for unlimited personal and commercial projects. There are no watermarks and no hidden fees.
What happens if I don't select any size? expand_more
The tool will prompt you to select at least one size. By default, we pre-select the most common web standards (16, 32, 48, 256) to save you time.
