UBL / Peppol invoice viewer
Got an electronic invoice as an XML file (UBL / Peppol BIS)? Drop it in and read it like an ordinary invoice: seller, buyer, lines, totals, VAT. The raw UBL is dense, and a readable view is the fastest way to check a figure before you pay. The file stays in your browser, so an incoming invoice never leaves your machine.
- 100% local
- Free · no account
- Instant result
This tool runs entirely in your browser — nothing is sent to a server.
E-invoices exchanged via the Peppol network use the UBL (Universal Business Language) XML format, per the European EN 16931 standard. Machine-readable, the format is not for humans: opening the file shows hundreds of XML tags.
This viewer turns your UBL file (Invoice or CreditNote) into a readable invoice: seller, buyer, VAT numbers, billing lines, totals and the account to credit. The file is analysed locally in your browser — your invoice is sent nowhere.
How it works
Type the figures or drop the file you want to process — the tool checks them as you go.
Everything is computed directly in your browser. Nothing is sent to a server.
The result appears instantly, with the detailed breakdown ready to copy, download or keep.
Why use this tool
No account, no download, no limit: the result appears as soon as you enter your data.
Every rule, algorithm and check reflects what we use ourselves every day at Flexina.
The calculations follow the official standards, and the step-by-step detail lets you double-check the outcome.
What does running it locally bring you?
Files, figures and documents never leave your device: nothing is stored, nothing is sent.
Once the page is loaded, you can cut the network: the tool keeps working.
No upload, no account, no third-party server in between: results stay fast and fully private.
Frequently asked questions
What is Peppol and am I concerned?
Peppol is the structured document exchange network chosen for B2B e-invoicing. In Belgium, it has been mandatory between VAT-registered businesses since 1 January 2026.
Which files can I open with this tool?
XML files in UBL format: invoices (Invoice) and credit notes (CreditNote), notably in the Peppol BIS Billing 3.0 profile. Factur-X PDFs will get a dedicated tool.
Is my invoice sent to a server for analysis?
No. The XML analysis happens entirely in your browser. You can even cut your connection after the page has loaded.