Is Captcha for Odoo GDPR-compliant?

Yes. All captcha generation and validation happens entirely within your Odoo server. No data is sent to third-party services like Google reCAPTCHA, making it fully GDPR-compliant and privacy-friendly.

Which forms can I protect with this Odoo captcha module?

You can independently enable captcha protection on your Odoo website login form, signup form, and password reset form. Each form's captcha can be toggled on or off from the website configuration settings.

Does Captcha for Odoo support multiple websites?

Yes. The module is built for multi-website Odoo environments. Each website gets its own independent captcha configuration including type, difficulty, and which forms are protected.

What captcha types are available?

Three captcha types are available: Mathematical (simple arithmetic challenge), Numeric Image (digits rendered as an image), and Alphabetic Image (letters rendered as an image). Each type has configurable difficulty, length, and distortion settings.

Which Odoo versions does this captcha module support?

Captcha for Odoo supports Odoo versions 16, 17, 18, and 19. It is compatible with Odoo Online, Odoo.sh, and On-Premise deployments.

Captcha for Odoo

Zehntech Odoo App

Server-side captcha protection built natively into Odoo - no third-party services, no privacy trade-offs, no recurring fees.

Three captcha types: Math, Numeric Image, Alphabetic Image

Fully server-side - no Google reCAPTCHA dependency

Protects login, signup, and password reset forms

Independent configuration per website

GDPR-compliant by design

Price FREE

Version V19, 18

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What is Captcha for Odoo?

Captcha for Odoo is a free Odoo module by Zehntech Technologies that adds privacy-friendly, server-side captcha verification directly to your Odoo website forms. Unlike Google reCAPTCHA or hCaptcha, this module generates and validates every challenge entirely within your Odoo environment - meaning no user data ever leaves your server. It works out of the box on Odoo 16 through 19, supports multi-website setups, and gives administrators complete control over captcha type, difficulty, and form-level activation.

Blocks automated bot submissions

Zero third-party calls

Multi-website support

Real-time preview

Adjustable difficulty

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How Captcha for Odoo Solves the Bot & Spam Problem

Problem

Zehntech Solution

Bots flooding the login form with credential-stuffing attempts

Captcha challenge blocks automated submissions before authentication runs

Mass fake account creation via signup form

Captcha required at signup - bots cannot complete the challenge

Password reset abuse used for account enumeration

Captcha gate on password reset form stops automated probing

Third-party reCAPTCHA creating GDPR / data-transfer risk

100% server-side - no data sent outside your Odoo instance

One captcha config applied across all sites (multi-website)

Per-website independent settings - each site configured separately

Admin has no way to preview captcha before deploying

Built-in live preview renders exact captcha appearance in real time

Generic error messages confusing users on failed challenge

Custom validation failure messages configurable per deployment

Captcha appearance too easy or too hard for target audience

Adjustable difficulty, length, symbols, and distortion per type

Everything Included in Captcha for Odoo

Multi-Website Independent Configuration

Each website in a multi-website Odoo environment gets its own captcha settings. Enable strict image-based captcha on your public eCommerce site while using a simple math captcha on your internal staff portal.

Three Captcha Types

Choose from Mathematical (arithmetic challenge), Numeric Image (digits rendered as a distorted image), or Alphabetic Image (letters rendered as a distorted image). Each type targets a different threat model.

Activate captcha on the standard Odoo website login form with a single toggle. Every login attempt must pass the captcha challenge before credentials are even checked.

Enable captcha on the website signup / registration form to prevent mass automated account creation. Keeps your customer and contact database clean.

Password Reset Form Protection

Add a captcha gate to the password reset flow to stop bots from using the forgot-password endpoint for account enumeration and spam.

Fully Server-Side Validation

All captcha image generation and challenge validation occurs entirely within the Odoo server. No API calls are made to Google, Cloudflare, or any external service.

Adjustable Difficulty, Length, and Symbols

Configure how hard the captcha is to solve - set character or digit length, enable or disable special symbols, and adjust the level of visual distortion.

Live Preview Before Deployment

The settings interface renders a real-time visual preview of the captcha as you adjust parameters. Confirm exactly what users will see before saving.

Custom Validation Failure Messages

Configure the error message displayed to users when a captcha challenge fails. Replace generic system text with clear, branded, context-appropriate instructions.

Who Gets The Most Out Of This Module

Role

Primary Use Case

Key Outcome

Odoo Website Administrator

Enable captcha on login, signup, and password reset with per-site configuration

Eliminates bot traffic from all public-facing forms

eCommerce Manager

Protect customer registration form from mass fake account creation

Clean customer database, no spam leads

IT Security Officer

Replace third-party reCAPTCHA with fully on-premise captcha solution

GDPR audit passes with zero data-transfer findings

Data Protection Officer (DPO)

Verify that no user data is transmitted outside the Odoo environment

Clean data-flow documentation

Multi-Brand Odoo Operator

Configure different captcha types and difficulty per website

Each brand site gets security tuned to its audience

Odoo Developer / Integrator

Deploy lightweight, dependency-free captcha requiring only Website and Mail modules

Fast implementation, no third-party API keys

Versions & Documentation

Select your Odoo version to access the relevant setup guide and interactive documentation

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Native Odoo vs Zehntech Captcha for Odoo

Capability

Zehntech Module

Native Odoo

Bot protection on login form

Yes - captcha challenge required

No native captcha

Bot protection on signup form

Yes - configurable toggle

No native captcha

Bot protection on password reset form

Yes - configurable toggle

No native captcha

Captcha generation location

100% server-side within Odoo

N/A

Third-party data transmission

None - zero external calls

N/A

GDPR compliance for captcha

Yes - no data leaves your server

N/A

Multiple captcha types

3 types: Math, Numeric Image, Alphabetic Image

N/A

Per-website independent configuration

Yes - full multi-website support

N/A

Live preview before deployment

Yes - real-time in settings UI

N/A

Custom validation failure messages

Yes - fully configurable

N/A

Cost

FREE

N/A

Get Started In Minutes

No development environment. No custom code. No consultant required for standard setup.

Download and Install

Go to the Odoo App Store, search for "Captcha for Odoo" by Zehntech Technologies, and click Install. Compatible with Odoo Online, Odoo.sh, and On-Premise.

Open Website Configuration

Navigate to Website > Configuration > Settings. If you run multiple websites, use the website selector to choose the site you want to configure.

Select Captcha Type and Tune Settings

Choose Mathematical, Numeric Image, or Alphabetic Image. Set challenge length, enable or disable special symbols, and adjust visual distortion level.

Enable Protection on Each Form

Toggle captcha on for Login, Signup, and/or Password Reset forms. Configure the validation failure message. Click Save. Your forms are now protected.

Technical Compatibility

Requirement

Module Technical Name

Supported Odoo Versions

Latest Version

Deployment Compatibility

Module Dependencies

License

Lines of Code

Frequently Asked Questions

Yes. Every captcha challenge is generated and validated entirely within your Odoo server. No user data - including IP addresses or form input - is transmitted to any third-party captcha provider. This makes the module fully GDPR-compliant by design and eliminates the data-transfer risk associated with services like Google reCAPTCHA.

You can independently enable captcha on three standard Odoo website forms: the login form, the signup/registration form, and the password reset form. Each form is toggled separately, so you can protect only the forms that carry the highest risk for your specific deployment.

Yes. The module fully supports Odoo's multi-website architecture. Each website in your instance gets its own independent captcha configuration - including captcha type, difficulty level, length, distortion settings, and which forms are protected. Changes to one website's settings do not affect any other website.

No. Captcha for Odoo is entirely self-contained. It depends only on the Website and Discuss (Mail) modules already present in standard Odoo installations. There are no third-party accounts to create, no API keys to manage, and no DNS whitelisting required.

The form submission is blocked and a validation failure message is displayed to the user. You can customize this message from the website configuration settings to provide clear, brand-appropriate guidance - reducing user confusion and support tickets when legitimate users make an error.

One-Time Download.
No Subscription.
No Recurring Fees.

Captcha for Odoo delivers enterprise-grade, privacy-first bot protection across every public-facing form in your Odoo website - without paying for a third-party captcha service, without configuring external APIs, and without compromising your GDPR compliance. One free module, installed in minutes, protecting your site indefinitely.

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