SVGZ to ICO Converter

The SVGZ format is strictly a GZIP-compressed version of a standard Scalable Vector Graphics (SVG) file. It utilizes the Deflate compression algorithm (RFC 1951) to reduce the file size of the verbose XML text data typically found in standard SVGs, often achieving size reductions of 50-80%. While functionally identical to SVG in terms of graphical rendering capabilities and DOM structure, the binary compression prevents the file from being readable in standard text editors without prior decompression.

Most modern web browsers (Chrome, Firefox, Safari) render SVGZ files natively, provided the web server serves them with the correct Content-Encoding: gzip header. For offline editing, vector graphics tools like Adobe Illustrator and Inkscape automatically handle the decompression and display the graphic. If manual inspection is required, the file can be renamed with a .gz extension and decompressed using utilities like 7-Zip or GNU Gzip.

The ICO format is an image container specifically designed for Microsoft Windows to store icons for executable files, folders, and applications. Introduced with Windows 1.0, it can encapsulate multiple raster images of varying dimensions and color depths (specifically BMP or PNG frames) within a single file to support dynamic scaling across different display resolutions. The structure comprises an ICONDIR header referencing one or more ICONDIRENTRY directory entries, allowing the operating system to select the appropriate 16x16, 32x32, or 48x48 pixel resource based on the current UI scaling settings.

ICO files are natively supported by the Microsoft Windows operating system, which automatically renders them in the File Explorer and taskbar. On macOS, Apple Preview handles the format natively. For editing or detailed inspection of the contained bitmap layers, raster graphics editors such as GIMP, Adobe Photoshop (via plugin), or Paint.NET are required. Web browsers also natively render ICO files when they are designated as favicons.