Is my SVG uploaded to any external server or cloud service?

No. All SVG parsing, sanitization, Canvas rasterization, and binary ICO packaging run 100% locally in your browser memory. Your files never leave your computer.

How does the tool prevent malicious SVG script execution (XSS)?

The tool routes all SVG source through a strict client-side sanitizing boundary that strips elements, event handlers (onload, onclick), external fonts, remote network requests, and dangerous foreignObject payloads before rendering.

Why does the exported .ico file contain multiple resolutions?

Standard website favicons and desktop shortcuts require multiple icon resolutions (e.g. 16x16 for browser tabs, 32x32 for high-DPI displays, and 48x48+ for OS shortcuts). Our tool packages all chosen sizes into one single standards-compliant binary .ico file.

Will alpha transparency be preserved in the exported PNG and ICO files?

Yes. Both PNG and ICO exports preserve 32-bit RGBA alpha channel transparency by default, ensuring your icons look crisp on dark, light, or customized website backgrounds.

SVG to High-Res PNG & Multi-Size ICO Generator

How Browser-Based SVG to PNG and ICO Conversion Works

Scalable Vector Graphics (SVG) define two-dimensional graphics using XML-based vector paths. While vectors scale infinitely without loss of fidelity, many web platforms, desktop environments, and mobile applications require fixed-resolution raster bitmaps like PNG or multi-layer ICO favicons. Our generator performs this conversion 100% locally in your browser memory using hardware-accelerated Canvas rendering.

Client-Side Security & Active Content Sanitization

Because SVG is an XML dialect, untrusted SVG files can embed active scripts, malicious event handlers (such as onload or onclick), and remote network trackers. Our sanitization boundary completely disarms vectors before rendering:

Script Purging: Strips all <script> elements and removes inline event handlers from all nodes.
Zero Network Leakage: Disables external <image>, <use>, and CSS @import or @font-face network URLs, preventing tracking and exfiltration.
Safe ForeignObject Handling: Neutralizes embedded HTML markup to ensure zero cross-site scripting (XSS) risk.

Multi-Resolution ICO Favicon Architecture

The Microsoft ICO format encapsulates an ICONDIR header and an array of directory entries pointing to independent image payloads. Modern browsers and operating systems automatically pick the most suitable resolution from this container:

16×16: Classic desktop browser tab favicon.
32×32: High-DPI / Retina tab icon and taskbar shortcut.
48×48: Windows desktop application shortcut and task switcher icon.
64×64 to 256×256: Windows high-DPI desktop view, file explorer previews, and web store assets.

Frequently Asked Questions

Is my SVG uploaded to any external server or cloud service?: No. All SVG parsing, sanitization, Canvas rasterization, and binary ICO packaging run 100% locally in your browser memory. Your files never leave your computer.
How does the tool prevent malicious SVG script execution (XSS)?: The tool routes all SVG source through a strict client-side sanitizing boundary that strips <script> elements, event handlers (onload, onclick), external fonts, remote network requests, and dangerous foreignObject payloads before rendering.
Why does the exported .ico file contain multiple resolutions?: Standard website favicons and desktop shortcuts require multiple icon resolutions (e.g. 16x16 for browser tabs, 32x32 for high-DPI displays, and 48x48+ for OS shortcuts). Our tool packages all chosen sizes into one single standards-compliant binary .ico file.
Will alpha transparency be preserved in the exported PNG and ICO files?: Yes. Both PNG and ICO exports preserve 32-bit RGBA alpha channel transparency by default, ensuring your icons look crisp on dark, light, or customized website backgrounds.

SVG to High-Res PNG & Multi-Size ICO Generator