Tech riderRev. 21 Sept 2026
  1. 1Runs onLinux, self-hosted, Web
  2. 2CostsNot stated by the maker
  3. 3Address-book exportYes
  4. 4Duplicate detectionYes
3 lines stated Written from the maker's own pages: github.com
The QardQntac homepage

Overview

QardQntac is ranked #23 of 24 in business card scanner software on Specifiction. It runs on Linux, Self-hosted, Web.

Compared on business card scanner software

Address-book export
Yesgithub.com
Duplicate detection
Yesgithub.com

Facts

Purpose
QardQntac is an open-source, self-hosted business-card scanner that extracts contact details from card photos using AI.github.com · 4 Oct 2026
Workflow
Users can scan or upload a card image, review and correct extracted contact fields, tag contacts, and export or sync them.github.com · 4 Oct 2026
AI providers
AI extraction supports locally hosted Ollama models and cloud providers OpenAI, Anthropic, and Google Gemini.github.com · 4 Oct 2026
CardDAV
Contacts can sync to any standard CardDAV server, with Nextcloud, Radicale, and Baikal listed as examples.github.com · 4 Oct 2026
Export
Contacts can be downloaded as standard .vcf files, and tags are exported as the vCard CATEGORIES field when syncing.github.com · 4 Oct 2026
Authentication
Sign-in uses passwordless magic links sent by email when SMTP is configured; without SMTP, links appear in server logs.github.com · 4 Oct 2026
Access control
Administrators can restrict sign-ins by email domain or disable new account registration.github.com · 4 Oct 2026
Data handling
The project says data stays on the self-hosted server unless a cloud AI provider is selected; its Ollama option runs models locally and is described as fully private.github.com · 4 Oct 2026
Languages
The interface supports English and French, configurable through an environment variable.github.com · 4 Oct 2026
Deployment
The project provides Docker Compose and container deployment instructions and says it runs on a Linux server with Docker and Node.js.github.com · 4 Oct 2026
Mobile camera requirement
Using the camera scanner from a phone or tablet requires serving the app over HTTPS with a valid certificate.github.com · 4 Oct 2026
Database limitation
The embedded database fallback is explicitly described as not suitable for production; PostgreSQL can be configured through DATABASE_URL.github.com · 4 Oct 2026
License
The repository identifies the project as MIT licensed.github.com · 4 Oct 2026
Privacy
The project says data stays on the user's server unless they choose a cloud AI provider; Ollama runs models locally without internet access.github.com · 9 Oct 2026
Integrations
CardDAV sync supports Nextcloud, Radicale, Baikal, and any standard CardDAV server.github.com · 9 Oct 2026
Contact export
Contacts can be downloaded as standard .vcf files, and tags sync as the vCard CATEGORIES field.github.com · 9 Oct 2026
Contact management
Users can create color-coded tags, apply multiple tags per contact, filter contacts, and detect duplicates by name, email, or phone.github.com · 9 Oct 2026
Mobile use
The README describes phone and tablet camera scanning in a browser and says network access from real devices requires HTTPS.github.com · 9 Oct 2026
Limit
The README says the embedded database fallback is not suitable for production and recommends configuring PostgreSQL for production use.github.com · 9 Oct 2026

Company

Headquarters
Francegithub.com · 28 Sept 2026

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Sources