Free tools for your business
Check for yourself whether everything digital in your business is in order. The tools follow official rules and open standards.
- Free. Every tool and every result is free of charge.
- No sign-up. You open a tool and start the check right away.
- With explanations. For every finding, you read what it means and what to do next.
All tools
Choose the tool for your topic. Each card shows what the tool checks.
- E-invoice
E-Invoice Validator
Upload your XRechnung or ZUGFeRD invoice and see whether it is valid. Every error appears at the affected field and tells you what to correct.
- XRechnung
- ZUGFeRD
- KoSIT rules
Result in a few seconds - Email
Email Security Check
Enter your domain and see whether someone can send forged emails in your name. Missing records come ready to copy.
- SPF
- DKIM
- DMARC
Result in a few seconds - Website
Website Check
We open your website in a real browser, just as a visitor sees it. You get a grade from A to F and the fixes sorted by importance.
- Speed
- SEO
- Privacy
Result in under a minute
What happens to your input?
With every tool, the check takes the same path, from your input to its deletion.
- 01
Input
You enter what should be checked.
- 02
Check
The check runs on our server, and your input stays in memory only.
- 03
Result
The result appears directly in your browser, on the same page.
- 04
Deletion
After the check, your input is deleted and not stored.
Missing a tool?
Tell us which check you need. Your suggestion helps us choose the next tools.
Frequently asked questions about the tools
Here you can read what the tools cost, how reliable the results are and what happens to your input.
From result to finished solution
Our free tools show you where you stand. If you like, we take care of the rest: setup, integration and ongoing support. The initial consultation is free and without obligation.
- Free initial consultation
- No obligation
- NDA on request