mjhjmtu

I am trying to play with Tikz, to create standalone figures, with the snippet below:

documentclassstandalone
usepackage[utf8]inputenc
usepackagetikz

begindocument
definecolorcff0000RGB255,0,0
begintikzpicture[y=0.80pt, x=0.80pt, yscale=-1.000000, xscale=1.000000, inner sep=0pt, outer sep=0pt]
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 controls (91.3802,205.5695) and (81.3862,210.3721) .. (81.3862,210.3721) --
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 (60.5056,150.8305) .. controls (60.5056,150.8305) and (50.4060,155.6110) ..
 (50.4060,155.6110) -- cycle;

endtikzpicture
enddocument

Much to my surprise, the left-side of figure gets an added extra white space.

Note: This MWE is created with tikz extension in inkscape.

It is called "spurious space", which, in TeX, is usually caused by un-commented line endings.

As a remedy, comment out the line ending in question:

definecolorcff0000RGB255,0,0% <-- `%' added

The standalone package has a dedicated tikz option that creates a single image per tikzpicture environment and crop the borders.

page 8 of the manual:

The standalone class will crop the resulting output file (PDF or
DVI/PS) to the content size plus a certain border. Page number and
other header or footer material will be suppressed. For pictures drawn
with TikZ a dedicated tikz option is provided which loads the tikz
package and also configures the tikzpicture environment to create a
single cropped page.

To add a 5 mm wide border, just add the border option like this :

documentclass[tikz,border=5mm]standalone

The code without border is :

documentclass[tikz]standalone
usepackage[utf8]inputenc

begindocument
definecolorcff0000RGB255,0,0
begintikzpicture[y=0.80pt, x=0.80pt, yscale=-1.000000, xscale=1.000000, inner sep=0pt, outer sep=0pt]
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 (60.5056,150.8305) .. controls (60.5056,150.8305) and (50.4060,155.6110) ..
 (50.4060,155.6110) -- cycle;

endtikzpicture
enddocument