Example 1: XML invoice
Choose the “XML” example in the reader. You will see an invoice from Studio Aurora - esempio, number ESEMPIO-001, with one EUR 10.00 item, EUR 2.20 VAT and a EUR 12.20 total.
About
OpenP7M in practice
An independent developer’s project for opening P7M attachments and electronic invoices in your browser, without installing software or creating an account.
The project is operated by an independent developer based in Hong Kong. Use the Contact page for product information or support. Contact.
What the service offers
These are the current product’s capabilities and limits, so you can decide whether to purchase.
- Free reading
- Full preview of supported PDFs and invoices, with the OpenP7M watermark.
- Paid export
- €1.99 once per source file, with no subscription. Includes the available outputs for that file without the service watermark. Pricing details.
- Supported documents
- P7M containing a PDF or FatturaPA FPR12/FPA12 XML invoice; also direct XML invoices. Invoices must have a single body and no embedded attachments. Invoice guide.
- Technical limits
- One file at a time, up to 20 MiB and five nested P7M containers. No batch processing. Encrypted or damaged files, or other embedded formats, may not open.
- Original and reading copy
- For P7M containing a PDF, we extract the original PDF bytes. XML.P7M gives you the original XML and a reading PDF; direct XML gives you a reading PDF. Always keep your source file.
- No signature verification
- Reading content or displaying a certificate does not prove a signature is valid. OpenP7M does not verify signature integrity, trust chains, revocation or legal validity.
Two repeatable examples, without personal documents
The examples are created for demonstration with fictional data. They are not customer testimonials or documents for tax compliance.
Example 2: the same invoice in P7M
Choose the “P7M” example. The sample container holds the same XML invoice: the reader should show the same amounts. This checks reading, not signature validity.
You can read the examples without paying. The export button uses the normal per-file purchase: no purchase is needed to complete these checks.
How to inspect local processing
Document contents are processed in browser memory. You can observe the behavior using a fictional example and your browser’s developer tools:
- Open the Network tab before selecting the example and keep all requests visible.
- When you choose an example, the browser downloads that public file. When you select a file from your device, the reader opens it locally. The order-status request may transmit a file fingerprint, not the file contents.
- Inspect the data sent in requests: the document, filename, invoice lines and certificates should not appear in payloads. Scripts, fonts, order status and analytics are not document uploads.
This is an observable check of the workflow, not independent security certification. Orders and payments require metadata; analytics and support serve separate purposes. Data processing notice.
Help us improve with specific feedback
Tried the reader? Tell us what worked and where you got stuck, even if you did not purchase. Include your device, browser, file type and error message, without attaching documents or confidential data.
You can share your experience in your own words. We do not offer benefits in exchange for positive reviews, and will not publish your message as a testimonial without your consent.
We do not keep a copy of your documents. We cannot reconstruct a lost original. To download a purchase again, use the same file and browser; contact support if you change devices.