PNG to ICO converter: free, fast and secure
Need to change an image from PNG to ICO? This tool does it instantly and for free, without uploading your pictures anywhere. ICO is the format browsers use for favicons and Windows uses for app and folder icons.
Unlike most converters, ConvertKaro never uploads your images. The conversion happens on your own device, so it is quicker, there are no file limits, and your photos stay private.
How to convert PNG to ICO in 3 steps
- Add your PNG files. Tap “Select files” or drag and drop one or more .png images into the box above. You can also paste a screenshot with Ctrl+V.
- Adjust the options. Nothing to set: every common icon size is included automatically.
- Download your ICO. Conversion starts instantly. Download each ICO file, or all of them at once as a ZIP.
Why use ConvertKaro PNG to ICO? Free, fast and secure
Many online tools upload your file to a remote server and make you wait. ConvertKaro is different.
100% Free
Use PNG to ICO completely free, every day. No credit card, no “pro” version and no daily cap on files.
Fast results
No waiting for uploads to finish. The work happens on your device the moment you add a file, which makes it noticeably faster than server-based tools.
Secure and private
Your files never leave your device. ConvertKaro does not upload, store or look at your documents and photos, which makes it safe for ID cards, bank statements and private pictures.
No signup, no watermark
You do not need to sign up or log in, and your output is clean, without any logo or branding.
Works on every device
Nothing to install: it runs in any modern browser on phones, tablets and computers.
Quality you control
The ICO output keeps the full resolution of your PNG, with high-quality resizing and correct colours.
ConvertKaro vs other online converters
| ConvertKaro | Typical online tool | |
|---|---|---|
| Price | Free forever, every feature | Free trial, then paid plans |
| Your files | Stay on your device | Uploaded to a server |
| Signup | Not needed | Often required |
| Watermark or ads on result | Never | Common on free plans |
| Speed | Instant, no upload wait | Depends on upload speed |
| Daily limits | None | Usually limited |
PNG vs ICO: what is the difference?
Before converting, it helps to know how the two formats compare.
| PNG | ICO | |
|---|---|---|
| Full name | Portable Network Graphics | Windows Icon |
| Type | Raster, lossless | Raster container |
| Compression | Lossless | PNG inside |
| Transparency | Yes | Yes |
| Animation | No | No |
| File size | Large for photos, small for graphics | Small |
| Support | Everywhere | Browsers (favicons), Windows |
| Best for | Logos, screenshots, graphics with text, transparent images | Website favicons, Windows app and folder icons |
What is PNG?
PNG is a lossless image format, so it keeps every pixel exactly as it is. It supports full transparency, which makes it the standard choice for logos, icons, screenshots and graphics with sharp text. Because nothing is thrown away, photos saved as PNG are usually much larger than the same photo as JPG or WEBP. PNG works in every browser, design tool and operating system.
What is ICO?
ICO is the icon format used for website favicons and Windows icons. One .ico file can contain several sizes of the same picture (16, 32, 48 up to 256 pixels) so the system can pick the right one for tabs, bookmarks, the taskbar or the desktop.
When should you convert PNG to ICO?
- Website favicons for the browser tab
- Windows app and shortcut icons
- Folder icons
- Bookmarks and pinned sites
Tips for the best ICO results
- Use a square logo of at least 256×256 pixels with a transparent background. For a full favicon package with Apple and Android icons, use the Favicon Generator.
- You can convert many PNG files at once. They are processed one after another and can be downloaded together as a ZIP.
- Keep your original PNG files until you have checked the converted ICO images.
How PNG to ICO keeps your photos and images private
When you add a file to PNG to ICO, it is opened with your browser’s own engine, processed in memory and offered back to you as a download. ConvertKaro never receives a copy. This is why the tool is fast even on 4G, why there is no daily limit, and why it is safe for confidential photos and images like ID proofs, bank documents, contracts and family photos.
Using PNG to ICO on your phone
On a phone, open this page in Chrome or Safari, tap the main button and pick files from your gallery, Files app or Google Drive. Results download straight to your phone, usually into the Downloads folder or Files app. You can also add this page to your home screen for one-tap access next time.
Who uses PNG to ICO?
You do not need any technical knowledge to use it. It is popular with:
- Students uploading photos and signatures to exam and admission forms
- Online sellers preparing product photos for Instagram, Meesho, Amazon and Shopify
- Office staff handling ID cards, scans and screenshots
- Bloggers and web designers who need fast-loading images
- Anyone sharing pictures on WhatsApp, email or social media
Supported input: JPG, JPEG, PNG, WEBP, HEIC/HEIF (iPhone), AVIF, GIF, BMP, TIFF and SVG.
Frequently asked questions
Will converting PNG to ICO reduce quality?
Each icon size is resized with high-quality smoothing. Start from a large, square image for the sharpest favicon.
Does ICO keep transparency from PNG?
Yes. ICO supports transparency, so transparent areas in your PNG stay transparent.
Can I convert multiple PNG files to ICO at once?
Yes. Select or drop as many PNG images as you like. Each one is converted separately, and you can download them all together as a ZIP file.
Which sizes are inside the ICO file?
The icon contains 16, 32, 48, 64, 128 and 256 pixel versions, which covers browser tabs, bookmarks, the Windows taskbar and desktop shortcuts.
Is PNG to ICO really free?
Yes, completely free. You can use it as many times as you want, and every option on the page is included at no cost.
Is it safe to use PNG to ICO online?
Yes. Your files are processed inside your own browser and are never uploaded to our servers, so nobody else can see them.
Does PNG to ICO work on mobile?
Yes, the tool is built mobile-first. Open this page on your phone, add your files and download the result directly.
Is there a file size limit in PNG to ICO?
There is no fixed limit set by us because files are not uploaded. Very large files depend on your device’s memory; most phones handle files of 100 MB or more without problems.
Will ConvertKaro add a watermark or ask me to sign up?
No. There is no watermark, no login and no email required. Your downloaded file is exactly your result.
Does PNG to ICO work offline?
Once this page has finished loading, the tool keeps working even if your internet connection drops, because all processing happens on your device.