eBay App Directory

Powerful eBay seller tools and software integrations to be a successful eCommerce business


Easily share measurements with buyers. 

Includes 165+ sizing templates and imperial and metric conversion support.

Supports all major platforms (eBay, Poshmark, Tradesy, Amazon, Mercari & more.)

Decrease Returns

Sizely templates reduce returns by up to 50%.

Increase sales

Sellers using Sizely templates see an increase in sales by up to 26% as well as an increase in buyer confidence by up to 70%.

Fast sizing templates

Generate templates in a few seconds on any device. Designs are optimized for display on all devices.

3Dsellers Partner Offers
  • Special offer:
    No current offers, stay tuned for updates!
  • Last updated:
    Feb 12, 2020
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