Free online GRAPHMLZ to SVG converter

GRAPHMLZ files are commonly produced by yEd for compressed mind maps, flowcharts, and network diagrams, while SVG is accepted by browsers, design tools, and documentation systems. Converting the file is useful when you need a scalable picture for sharing, embedding, printing, or editing as artwork.

What the GRAPHMLZ format is

GRAPHMLZ is a compressed GraphML file used to store graph structure, node and edge data, labels, layout information, and diagram styling. It is most often created by yEd Graph Editor, especially when a smaller file is preferable to an uncompressed .graphml file.

The format preserves diagram relationships and layout information rather than storing only a rendered picture. Applications that do not support GraphMLZ may not recognize it directly, even if they can open ordinary GraphML.

What the SVG format is

SVG is an XML-based vector image format. It represents diagram elements as paths, shapes, text, and other scalable objects, so the output remains sharp when enlarged or printed.

SVG is suitable for web pages, technical documentation, presentations, vector editors, and long-term visual archiving. It does not normally preserve the original graph as editable nodes and edges; after export, the result is primarily a drawing.

How to actually convert GRAPHMLZ to SVG

Using yEd Graph Editor

1. Install and open yEd Graph Editor.
2. Choose File → Open and select the .graphmlz file.
3. Check the layout, labels, arrowheads, and page boundaries in the canvas.
4. Choose File → Export.
5. Select SVG as the output format, choose a destination and filename such as diagram.svg, then confirm the export.

For online conversion, the built-in converter on 101convert.com can convert GRAPHMLZ to SVG for free without installing software. Upload the source file, select SVG as the target, run the conversion, and download the resulting file.

When yEd cannot open the file

GRAPHMLZ is compressed GraphML, so first use an archive or decompression utility that supports the file's compression method and extract the contained .graphml file. Open that extracted file in yEd, then use File → Export and select SVG. Do not simply rename .graphmlz to .svg; changing the extension does not convert the data.

Quality, compatibility, and limitations

SVG export normally retains the diagram's vector geometry, colors, lines, arrowheads, and text placement. Check the exported file in a browser or SVG editor because font substitution, unsupported font effects, clipping, transparency, and very large diagrams can change the appearance.

SVG does not retain GraphML semantics such as node identifiers, edge relationships, graph metadata, or yEd-specific editing properties in a generally reusable form. Keep the original GRAPHMLZ file when the diagram must remain editable as a graph, and use SVG as the visual distribution copy.