Stop retyping your tax details on every invoice
Save your tax details once and fill in any merchant’s self-invoicing portal with one click: gas stations, OXXO, Walmart, restaurants, Uber, airlines. No account and no server: your data stays on your device.
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What it does
Merchants make you re-type your tax details on their self-invoicing portal every time: RFC, name or legal name, tax regime, postal code, CFDI use and email. This extension saves them once, as one or more profiles (for example, personal and company), and fills the form for you when you click.
Where it works
It is built for the self-invoicing portals of gas stations, convenience stores, supermarkets, restaurants, ride-hailing apps and airlines. Every portal builds its form differently, so a few fields may need a manual touch. It works on Google Chrome and on Chromium-based browsers such as Edge, Brave and Arc.
Your data never leaves your device
- We collect no data. There is no account, no sign-in and no backend.
- Your profiles are stored only on your device, in Chrome local storage (chrome.storage.local), and are never sent to Cretia or to anyone else.
- It only touches the page where you click "Llenar esta página" or use the right-click menu. Permissions: storage, activeTab, scripting and contextMenus.
- No analytics or tracking, and no remote code.
- Removing the extension deletes the data it saved.
Frequently Asked Questions
Does Cretia receive my tax details?
No. The extension has no account, no sign-in and no backend. Your tax details are stored only in chrome.storage.local on your device and are never sent to Cretia or to anyone else. Removing the extension deletes them. See the privacy notice.
Which permissions does it ask for, and why?
Storage, to keep your profiles on your device; activeTab and scripting, to fill the page you click on; and contextMenus, for the right-click option. It does not read or change any other page.
How do I use it?
Open the extension, save your profile (RFC, name or legal name, tax regime, postal code, CFDI use, email and, optionally, your address), go to the merchant’s self-invoicing portal and click "Llenar esta página" in the popup, or use the right-click menu.
Can I save more than one RFC?
Yes. Save one profile for each RFC, for example personal and company, and pick the one you need before filling the page.
Does it work on every portal and browser?
It works on Google Chrome and on Chromium-based browsers such as Edge, Brave and Arc. Every portal builds its form differently, so some fields may need a manual touch; you always review the form and submit it yourself.
Is it free?
Yes, it is free. It is a tool independent of SAT and of the merchants.
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