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E-Invoice Viewer & Validator
Read XRechnung, UBL, CII and Factur-X / ZUGFeRD invoices in plain language and check their totals and rules.
Free, no uploads, no sign-up. Runs 100% in your browser.
How E-Invoice Viewer & Validator works
XML is read with a small built-in parser and mapped to one invoice model for both CII and UBL. For hybrid PDFs the embedded XML is extracted first. EN 16931 calculation rules, required fields, IBAN checksums and key XRechnung rules are checked, and a readable PDF can be generated.
Input: XML, PDF. Output: PDF, XML.
How to use E-Invoice Viewer & Validator
- Drop your PDF onto the E-Invoice Viewer & Validator area, or click to choose it.
- Wait a moment while page thumbnails render locally.
- Choose the pages and options you need. Previews update as you go.
- Press the main action button and download the finished PDF.
Tips
- Encrypted PDFs must be unlocked first with Unlock PDF.
- Large scanned PDFs are mostly images. Compress PDF shrinks them the most.
- Your original file is never modified; you always download a new copy.
E-Invoice Viewer & Validator FAQ
- Are my files uploaded?
- No. This tool runs entirely in your browser tab. Files are read from your disk into memory and the result is generated locally.
- Is it free? Are there limits or watermarks?
- Free and open source (MIT). There are no file-size caps, daily quotas, accounts or watermarks.
- Does it work offline?
- Yes, once the page (and any engine it needs) has loaded, it keeps working without a connection thanks to the service worker cache.
Related tools
- E-Invoice Generator: Create EN 16931 e-invoices: Factur-X / ZUGFeRD PDF with embedded XML, or XRechnung in CII or UBL.
- PDF Attachments: List, extract, add and remove files embedded inside a PDF.
- Merge PDF: Combine multiple PDFs into one ordered document with drag-and-drop sorting.
- Split PDF: Split by ranges, every N pages, or extract each page into a ZIP.