PNG to ICO Converter
Turn your PNG graphics into a favicon (.ico) — transparency preserved.
Click or drop images hereTap here to choose images
Everything you need to know about PNG ➔ ICO conversion
Why is conversion needed?
Browsers use the ICO format for favicons. A PNG source with a transparent background is the ideal input: the icon blends cleanly into any browser theme.
What are the advantages of ICO?
A favicon made from a transparent PNG looks sharp on both light and dark browser themes — no white box around your logo.
Why Képkonverter:
PNG vs. ICO comparison
Understand the technical differences between the two formats to make the best choice.
PNG (Portable Network Graphics)
A lossless format with full transparency support — perfect for logos and graphics.
ICO (Icon)
Windows and web standard for icons — bundles multiple sizes in a single file.
How to convert PNG to ICO in 3 simple steps
Upload or drag & drop
Drag your PNG files into the upload box or paste directly from your clipboard (Ctrl+V).
Optional editing & tuning
Adjust compression quality, resize, crop or rotate if needed before generating your ICO files.
Instant download (.ZIP)
Download your converted ICO images one by one or all together in a single ZIP bundle.
What is an ICO file?
ICO is the native container format used by web browsers and Windows to display favicons. Its biggest advantage: a single ICO file can hold the same image in several sizes (multi-size), so one .ico file serves the browser tab, bookmarks, smartphone home screens and the desktop taskbar at the same time.
While modern web development can also use PNG images as favicons, the classic ICO format remains the most widely supported solution — older browsers, Safari and Windows desktop shortcuts all expect it.
ICO size chart
A professional favicon contains several size variants so it looks right everywhere. Here are the most common resolutions and where they are used:
| Size | Typical use |
|---|---|
| 16×16 | Browser tab and bookmark icon |
| 32×32 | Taskbar and retina browser tabs |
| 48×48 | Windows desktop shortcuts and folders |
| 64×64 | High-resolution Windows icons |
| 128×128 | Chrome Web Store and custom apps |
| 256×256 | Home screens, Apple touch and high-res displays |
When you convert with our tool, it automatically generates every standard size from your image and bundles them into one .ico file. Privacy is guaranteed: everything runs 100% in your browser, the file never leaves your device.
Create a favicon step by step
Building your site icon takes only minutes these days. Follow these simple steps:
- 1Prepare a square source image: Design a square PNG of at least 256×256 pixels so the generated icon stays sharp.
- 2Upload it to the converter: Drop the file into the converter area at the top of this page.
- 3Choose the sizes: Pick the icon sizes to generate, or simply keep the optimal defaults.
- 4Convert: Hit the convert button. If you want to shrink the image first, use our image compressor.
- 5Download the result: Save the generated .ico file to your computer.
- 6Add it to your website: Copy the file into your site's root folder (usually named favicon.ico).
Then reference it in the <head> of your HTML:
<link rel="icon" href="/favicon.ico" sizes="any">Modern tip: while ICO is the most universal format, Apple devices expect a separate apple-touch-icon reference — for that you can use a high-resolution PNG directly. For the full walkthrough, read our favicon guide article.
Common favicon mistakes
It's easy to slip up when making a favicon. The most common mistakes:
- Oversized source image: Saving unnecessarily large resolutions into the icon makes the .ico file bloated, which can slow down your page.
- Non-square source: Browsers display icons in a square area — a rectangular source gets squashed and distorted.
- Only a tiny 16×16 source: On retina screens a tiny source image renders blurry and pixelated when scaled up.
- Cache issues: Browsers stubbornly keep old favicons. If the new one doesn't show, force a refresh with Ctrl + F5 (Cmd + Shift + R on Mac).
- Missing link tag: Often the file is on the server but the <link> tag was never added to the HTML.
Need the reverse operation? Try our ICO to PNG converter or PNG to JPG tool.
Frequently Asked Questions (PNG ➔ ICO)
Why is PNG better than JPG for favicons?
PNG supports transparency, so your icon blends into any browser tab — JPG would give it a white background box.
What size should my source image be?
A square image of at least 256×256 pixels gives the best result — it's scaled down to all required favicon sizes.
Where do I put the favicon.ico file?
Upload it to your site's root folder and reference it in your HTML: <link rel="icon" href="/favicon.ico">.
How many sizes can one ICO contain?
In theory an ICO file can hold many size variants (that's its multi-size nature). In practice 5-6 standard sizes — 16, 32, 48, 64, 128 and 256 pixels — are enough for a perfect appearance everywhere.
How do I refresh the favicon if it doesn't change?
Browsers aggressively cache favicons. After uploading the new file, force a refresh with Ctrl + F5 (Cmd + Shift + R on Mac).
Can a favicon be animated?
No, the ICO format itself doesn't support animation. Animated icons require GIF, whose browser support today is quite limited.
How does ICO differ from PNG?
While PNG is a single fixed-resolution image format, ICO is a native container that bundles multiple resolutions in one file.
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