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Smarty Address Plugin
A lightweight JavaScript snippet that adds fast, verified US address suggestions to your forms. Customers type less, so you deal with fewer errors. Installed directly in your code, not as a marketplace app.
Fix invalid addresses
Stop bad addresses at the source so your records stay accurate and errors stay out of your system.
Complete addresses automatically
Full, verified addresses in clean, structured fields you can trust and reuse anywhere.
Improve data integrity
Keep your databases accurate and consistent with verified addresses collected before submission.
Built for developers. Proven in production.
Everything you need for fast, accurate address data at scale
INTEGRATION
Quick to integrate
Add a small JavaScript snippet, and you’re good to go. No long setup. No rebuilds.
CONVERSION
Higher completion rates
Address entry feels effortless, so customers move through forms faster.
DATA QUALITY
Clean data everywhere
Standardized address data flows into shipping, billing, CRM, analytics, and ops automatically.
COVERAGE
US address accuracy you can trust
Built on USPS-verified, CASS-certified US address data for accuracy.
Step 1
Add the plugin
Use the CDN, NPM, or a compiled build.
Step 2
Add your Smarty API key
Sign up, grab your key, and paste it in.
Step 3
Go live
Address fields autocomplete instantly. Selected addresses are returned in structured, normalized fields, ready for storage and reuse.
Set it up your way
Choose the setup that fits your stack. All options use the same plugin. Get Instructions.
JavaScript CDN (quickest setup)
This is the fastest way to get started. You add a short code snippet, with a few configuration options, and the plugin runs right away. Learn more.
Install with NPM
If your site uses modern frameworks like React or Vue, installing via NPM is a clean, familiar option. Learn more.
Estimate your savings & ROI
Checkout conversion calculator
Net annual savings
$61,350
Additional revenue
$63,750/year
Annual cost
$2,400
Additional orders
63/month
Prove your savings and ROI with a free trial
FAQ
Do I need a developer?
You need to be able to access your site’s code. If you feel comfortable working with and editing JavaScript to install the plugin, have at it! Otherwise, you might need to rope in a team member for support.
How long does setup take?
Most teams are live in under five minutes. Set up your Smarty account, then add the script, paste in your API key, and address autocomplete starts working immediately.
Is this a marketplace plugin?
No. This plugin is installed directly in your codebase using JavaScript. It’s not a one-click install from a marketplace.
Will this actually reduce delivery errors?
Yes. Users select full, verified addresses before submitting a form, which prevents incomplete or undeliverable addresses from entering your system.
Is this production-ready?
Yes. The plugin is built for low latency and high traffic, and is designed to run reliably in production environments.
Are there any customization options?
Yes. You can choose from dark mode, light mode, and a few fonts.
How does pricing work?
Pricing is per keystroke. Most addresses are at the top of the suggestion list by 3-5 keystrokes.
Does this support international addresses?
This plugin supports US Address Autocomplete. Smarty offers separate solutions for International Address Autocomplete, US Address Verification, and International Address Verification.
More FAQs
Select a category to see more information about a certain topic.