Pro PNG to ICO Converter
Upload PNG
Secure. Private. Instant.
or drag & drop files
Professional PNG to ICO Converter Suite
Experience high-performance image processing with our browser-native toolpix technology.
Multi-Resolution ICO
Generate icons with multiple embedded resolutions from 16x16 to 256x256 in a single ICO file, ensuring crisp display across all Windows contexts.
Alpha Transparency
Full 32-bit BGRA alpha channel support preserves your PNG transparency perfectly — no white fills or jagged edges on colored backgrounds.
Edge-Computing Studio
All conversion algorithms run on your local hardware. Your images never leave your computer, ensuring total studio security.
The Elite PNG to ICO Workflow
Upload PNG
Select or drag your PNG image into the workspace. For best results, use a square image at least 256x256 pixels.
Select Sizes
Choose which icon resolutions to include. Standard selections include 16x16, 32x32, 48x48, and 256x256 for maximum compatibility.
Generate ICO
Trigger the icon generation process. The tool creates a multi-resolution ICO file with all selected sizes embedded in a single file.
Download
Download your ready-to-use ICO file. Perfect for Windows applications, website favicons, and desktop shortcuts.
Pro Conversion Intelligence
- Always include a 256x256 resolution in your ICO — Windows will downscale it automatically for lower-DPI contexts, ensuring a sharp icon everywhere.
- Start with a square source PNG at least 256x256 pixels. Non-square images will be letterboxed to fit the square icon canvas.
- For favicons, a 32x32 ICO is sufficient for most use cases, but including 16x16 and 48x48 ensures compatibility with all browsers and contexts.
- Since all computation is local, your sensitive brand assets stay 100% private and protected behind your firewall.
Common Questions
What ICO sizes should I include?
Can I use ICO files for website favicons?
Does the ICO format support transparency?
What are the browser requirements for ICO?
Related Tools
Continue the workflow with closely related ToolPix pages built for the same task cluster.
Convert multi-page and high-resolution TIFF / TIF images to PNG format online free. Preserves color accuracy and transparency with zero uploads.
Convert PNG images to WebP with full alpha transparency support and lossless compression. Reduce file sizes by up to 75% with zero server uploads.
Convert PNG images to JPG format instantly with custom background color and quality controls. Batch convert multiple images with instant ZIP download.
Convert JPG images to lossless PNG format online free. Maintain maximum photo sharpness and color accuracy with private browser processing.
Convert JPG photos to multi-size Windows ICO favicon files (16x16, 32x32, 48x48, 64x64, 128x128, 256x256) online free. Perfect for website icons.
Convert JPG and JPEG photos to optimized WebP format online free. Speed up websites with smaller files and batch download. 100% private.
Turn photos and portraits into realistic pencil sketches and line art online free. Adjust stroke intensity and contrast with instant preview.
Convert GIF images and animations to high-quality JPG pictures online free. Fast batch conversion with 100% private browser processing.
Guides From The Blog
Supporting tutorials and explainers that reinforce topical relevance for this page.
Compare the best free image to PDF converters in 2026. Convert JPG, PNG, and multiple images to PDF online. No upload, no signup, 100% private browser processing.
Learn the key differences between PNG and JPG formats, when to use each, and how to convert between them for optimal image quality and file size.
Step-by-step guide to converting PNG to JPG while keeping image quality high. Learn the settings and tools involved.
Compare the best free PDF to JPG converters in 2026. Convert PDF pages to high-quality JPG images online. No upload, no signup, 100% private browser processing.