Visual height comparison tool for people, animals, objects, and characters
Free, open-source plugin for Lightroom Classic that exports masks as PNG, TIFF or JPEG files
Stage
Not given
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Founded
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Based in
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FR
Pricing model
Freemium
Open source
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).
Pay what you want, from €0
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
Export masks as PNG, TIFF or JPEG
Batch process multiple images and sequences
Local AI-powered object detection with RF-DETR
Standard and HD Fine Detail quality modes
Generate transparent PNG cutouts
Offline processing without internet or account
Matching filenames for images and masks
macOS and Windows support
MIT open-source license with source code on GitHub
Apple-signed and notarized builds
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
Exports masks as image files for use in 3D workflows, compositing and other tools outside Lightroom
Processes images locally on your computer with no internet or account required
Supports batch workflows for multi-view sequences used in photogrammetry and Gaussian splatting
Open source under MIT license with readable and modifiable code
Pay-what-you-want pricing with no license key required
HowHeight
mask bridge