Visual height comparison tool for people, animals, objects, and characters
Turn photos into printable black-and-white coloring pages, privately in your browser
Stage
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Founded
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Based in
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Pricing model
Freemium
Free
Pricing
Free plan available with limited features. HowHeight Pro plans: Monthly $4.99, Quarterly $9.99 per 3 months (with permanent unlock of more object placements), Yearly $29.99 per year (with permanent unlock and lifetime compression after 7-day trial ends and annual payment succeeds).
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Key features
Visual height comparison on a shared baseline scale
Support for centimeters and feet plus inches measurements
Compare people, celebrities, animals, objects, and fantasy characters
Save comparison boards with Pro subscription
Export comparisons as PNG images
Create shareable links for comparison boards
1,000+ built-in asset references
Custom names and editable entries
Ad-free workspace with Pro subscription
Unlimited objects on boards with Pro subscription
Convert photos to black-and-white outlines for coloring
Adjustable detail, line thickness, and style settings
Multiple output formats: PDF and PNG
Three conversion styles: Outline, Sketch, and AI Model
Gallery of 160 ready-made printable coloring pages
Browser-based coloring canvas with undo and palette
Chrome extension for right-click conversion
No account or sign-up required
Portrait or landscape orientation on A4 or US Letter
AI Model downloads about 30 MB to run locally on first use
What makes it different
Over 1,000 built-in asset references with celebrity presets for instant comparisons
Single shared baseline makes height differences proportional and easy to understand at a glance
Simple three-step workflow with no signup required for basic use
Export and share results as PNG images or shareable links
All processing runs in your browser with no image uploads or server storage
HowHeight
Coloring Page Maker