merge redundant objects

[fuddl]

If you want to see a pretty awful svg try to export one from openstreetmap

I uploaded an example at jsfiddl

You will see lines like this:

<image id="image5" width="5" height="5" xlink:href="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAUAAAAFCAIAAAACDbGyAAAABmJLR0QA/wD/AP+gvaeTAAAAPklEQVQImWP8//9//+c1DAwMDAwMhbwhLP2f1xzYu//q29vawqoMzgxMDAwMV9/ehpNMDAwM2sKqcJIRTT8Aqx0ZstcgmXUAAAAASUVORK5CYII="/>
<image id="image8" width="5" height="5" xlink:href="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAUAAAAFCAIAAAACDbGyAAAABmJLR0QA/wD/AP+gvaeTAAAAPklEQVQImWP8//9//+c1DAwMDAwMhbwhLP2f1xzYu//q29vawqoMzgxMDAwMV9/ehpNMDAwM2sKqcJIRTT8Aqx0ZstcgmXUAAAAASUVORK5CYII="/>
<image id="image11" width="5" height="5" xlink:href="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAUAAAAFCAIAAAACDbGyAAAABmJLR0QA/wD/AP+gvaeTAAAAPklEQVQImWP8//9//+c1DAwMDAwMhbwhLP2f1xzYu//q29vawqoMzgxMDAwMV9/ehpNMDAwM2sKqcJIRTT8Aqx0ZstcgmXUAAAAASUVORK5CYII="/>

<!-- it goes on like this for 97 lines... -->

its just the exactly same object 97 times. These 97 objects could be compared and merged into one. Replaced by references and so on. I'm sure this alone would reduce the file size to around 99%

[GreLI]

Actually, you can't merge such objects. SVG allows to reuse the with the <use> tag. But still in many quantities it's the same repetition, just somewhat shorter.