GRAPHOLOGY
LAB

Browse Graphology Lab

Browse the topics below or search by feature, letter or name.

FAMOUS SIGNATURE COMPARISON

Usain Bolt vs Muhammad Ali

Compare Usain Bolt (Sport) and Muhammad Ali (Sport) side-by-side across 9 geometric dimensions: track & boxing icons & larger-than-life signature presence.

Usain Bolt signature specimenVSMuhammad Ali signature specimen
Usain Bolt (+11° slant, 12 loops) vs Muhammad Ali (+33° slant, 4 loops)
WRITE OR UPLOAD YOUR SIGNATURE DIRECTLY BELOW

Your signature bank is empty. Draw your signature directly in the blank pad below and click Submit & Compare Signature — or click + Draw New Blank anytime to add and compare multiple signature patterns.

Popular comparisons:Browse all 50 pregenerated comparisons →
WORKSPACE SIGNATURE

Your analyzed signature

Workspace analyzed specimen

Signature A specimen
Slant
0°
Capital
1.0×
Loops
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FAMOUS AUTOGRAPH

John Hancock

Historical figure

Signature B specimen
Slant
0°
Capital
1.0×
Loops
0
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--%SHAPE SIMILARITY

Structural Alignment

Comparing geometric features…

9-Point Geometric Feature Breakdown

Comparing slant, baseline trajectory, capital emphasis, proportions, and rhythm:

Feature dimensionSignature ASignature BDifference / Alignment

Closest famous signatures to Signature A

Other autographs from our collection that share similar geometric dimensions:

SIDE-BY-SIDE OBSERVATIONS

Key differences between Usain Bolt and Muhammad Ali’s signatures

Usain Bolt’s autograph measures +11° in slant with a +11.3° baseline, 0.90× opening capital ratio, and 12 enclosed loops, whereas Muhammad Ali’s autograph records a +33° slant, +5.4° baseline, 3.07× opening capital ratio, and 4 enclosed loops.

Inspect the full individual profiles for Usain Bolt’s signature and Muhammad Ali’s signature, or browse all 50 pregenerated signature comparisons.

REFERENCE GUIDES

Signature analysis guides

Signature meanings chartGraphological interpretation of signature strokes, underlines, and slants.Signature versus normal handwritingHow public signature persona contrasts with spontaneous handwriting.Famous signature specimensDirectory of 328 historical and celebrity signatures with measurements.All caps and mixed caseUpper-case letterforms, introductory capitals, and personal emphasis.Upper and lower loopsUpper and lower stroke loops, enclosed spaces, and emotional breadth.Famous handwriting examplesCase studies in historical handwriting analysis and specimen comparisons.