SilentShield is an invisible, GDPR-compliant CAPTCHA alternative for Shopify stores. You add a small client script to your theme.liquid and verify submissions with a single API key — no Shopify app required. It blocks bots on checkout, login and contact forms without cookies or cross-site tracking, and hosting is in the EU by default.
Invisible Bot Protection for Shopify
Protect your Shopify store from bots, fake orders, and scalping – without disturbing your customers.
Comprehensive Shopify Protection
Checkout Protection
Prevents bot-driven orders and cart manipulation
Fake Account Protection
Stops automated registrations and fake accounts
Scalping Protection
Fair product availability during limited drops and sales
Payment Protection
Prevents card testing and fraudulent payment attempts
Benefits for Your Store
Integration in 3 Steps
Embed the client script
Embed the SilentShield client script into your Shopify theme (theme.liquid): <script src="https://api.silentshield.io/client.js?k=YOUR_API_KEY"></script>
Configure Protection
Choose which areas to protect: Checkout, Login, Contact Form.
Verify on your backend
Verify the SilentShield token on your backend – invisible protection is active.
How SilentShield works on Shopify
SilentShield runs an invisible check while shoppers use your store, so there are no image puzzles at checkout. You embed a lightweight client script in your theme and verify each submission on your backend with one API key. Because it uses no cookies and no tracking, it protects your store without slowing pages or affecting the buying experience.
Add it to your theme without an app
There is no Shopify App-Store app to install. You place the SilentShield client script in your theme.liquid layout and add the verification step to the forms you want to guard, such as contact, newsletter and account pages. This keeps you in full control of your theme and avoids extra third-party dependencies in your store.
Setup walkthrough
Create a SilentShield account and copy your API key. Open your theme code, add the client script https://api.silentshield.io/client.js?k=YOUR_API_KEY to theme.liquid, and send the generated token to your backend. Verify it against https://api.silentshield.io/api/v1/captcha/verify-nonce using the X-Api-Key header. Once verified, genuine shoppers continue without interruption.
Privacy-friendly protection for your store
SilentShield sets no cookies and does not track your customers across websites; the IP address is used only for the check and is not stored in plain text. This lets you protect your store in a GDPR-compliant way. The check runs on our servers in Germany by default. The invisible design meets WCAG 2.1 AA, so shoppers using a keyboard or screen reader can complete checkout without solving a challenge.
Protect Your Shopify Store Now
Embed script, configure, done. Start for free – no credit card required.
Frequently asked questions
How do I add SilentShield to Shopify?
Embed the SilentShield client script in your Shopify theme by adding `https://api.silentshield.io/client.js?k=YOUR_API_KEY` to theme.liquid, then verify the proof-of-work nonce on your backend at `https://api.silentshield.io/api/v1/captcha/verify-nonce` using the `X-Api-Key` header. This protects your store forms invisibly with a single API key.
Does SilentShield have a Shopify app?
SilentShield integrates with Shopify through a theme script embed rather than a dedicated app. You add the client script to theme.liquid with your API key and verify the nonce on your backend, giving your store invisible bot protection without cookies, tracking or image puzzles.
Is SilentShield GDPR-compliant for Shopify stores?
Yes. On Shopify, as on every plan, SilentShield keeps data on our servers in Germany, sets no cookies, does no cross-site tracking and stores the IP address only as a hash. Whether your store needs consent depends on the mode: in Zero-PII mode the widget does without fingerprint characteristics (canvas, WebGL, audio).
Will SilentShield slow down my Shopify store?
Hardly. SilentShield adds a client script of about 49 KB (gzip, measured on 23 Sep 2026) with no image assets to your theme. Verification uses behavioural signals and a proof-of-work nonce with no third-party tracking calls.
Do Shopify shoppers have to solve a CAPTCHA?
Not in the default mode. SilentShield verifies real customers in the background through behavioural signals and a proof-of-work nonce; only when the result is unclear is there a short arithmetic task. The widget is tested against WCAG 2.1 AA.
What does SilentShield cost for Shopify?
SilentShield has a free tier and paid tiers, all using a single API key and the same theme script embed. The free tier includes invisible protection, servers in Germany, no cookies and the IP address only as a hash; paid tiers cover higher request volumes for busier stores.