Electronic Invoice Viewing and Inspection

Quba makes structured and hybrid electronic invoices readable without requiring users to interpret raw XML manually. It supports invoice formats and standards including XRechnung, UBL, CII, Factur-X, and ZUGFeRD, while hybrid documents can present structured invoice information alongside their PDF representation. The viewer is useful for businesses, developers, accountants, and e-invoicing specialists who need to inspect invoice content in a human-readable form. Users can open multiple documents, display embedded structured data, handle invoice attachments, and print supported content. Its desktop workflow also allows routine invoice inspection to remain local instead of requiring documents to be uploaded to a web-based viewer.

Quba uses an Electron-based desktop architecture and XSLT transformations to convert supported structured invoice data into readable views. Hybrid invoices can expose their XML information alongside the associated PDF, making it easier to compare machine-readable fields with the visual document. Users managing unrelated business software can also review Google Ads Editor when organizing desktop tools for separate advertising and campaign-management workflows. Online validation is available through supported validation services, while normal viewing can remain offline, giving users control over when invoice data requires network communication. The viewer also supports drag-and-drop, multiple open files, printing, search in newer releases, and attachments, although the project documents limitations for some extended-profile attributes and elements.

Benefits of Using Quba

The main benefit of Quba is that it turns machine-readable electronic invoice data into an accessible desktop presentation, reducing the effort required to interpret XML structures manually. It can display structured invoices and hybrid PDF-based invoices, helping users compare invoice fields with the visual document when investigating totals, dates, line items, taxes, discounts, or attachments. Offline viewing is useful when documents should remain on the local computer during routine inspection, while optional online validation provides an additional workflow when checking supported invoice structures is necessary. Quba also supports several widely used European e-invoicing formats, allowing one application to handle documents from different standards instead of requiring separate viewers. Multiple-file handling, printing, search, and attachment viewing make everyday invoice review more practical. Because the project is distributed under the Apache 2.0 license, technical teams can inspect its implementation, adapt workflows around it, and contribute improvements through the open-source project.

Quba Software Information

• Developer: ZUGFeRD Community
• Current Version: 1.5.1
• File Size: 118.3 MB
• License: Open Source
• Language: English
• Downloads: 3,189
• Platform: Windows

System Requirements

• Processor: 2-core CPU
• RAM: 4 GB RAM
• Storage: 2 GB
• Graphics / GPU: Not required

Visit the official Quba website

Quba Features

Structured Invoice Viewing

Quba converts supported structured invoice data into a readable presentation instead of forcing users to interpret XML elements directly. It handles standards including XRechnung, UBL, CII, Factur-X, and ZUGFeRD, making the application useful when invoices arrive in different machine-readable formats used across European electronic invoicing workflows.

Hybrid PDF Display

Hybrid electronic invoices that combine a human-readable PDF with embedded structured data can be displayed within Quba. The structured portion can be examined alongside the PDF representation, helping users inspect information intended for automated processing while comparing it with the document layout that a person would normally read.

Offline Invoice Reading

Routine invoice viewing can take place locally without uploading documents to an online viewer. Quba therefore suits users who want to inspect supported electronic invoices from a desktop application while retaining local control of document files during ordinary reading, verification, and review tasks.

Invoice Validation

Quba supports validation through an online validation service for users who need more than visual inspection. Validation can help identify structural or mathematical problems in supported electronic invoice data, while remaining separate from normal offline viewing so users can choose when network-based checking is appropriate.

Order-X Viewing

Quba extends structured-document viewing beyond invoices through support for Order-X documents. The software can visualize structured information associated with this hybrid order format, giving organizations working with compatible electronic business documents a consistent desktop interface for examining invoice and order data without manually interpreting underlying structures.

Multiple Document Handling

Quba can open multiple supported files instead of requiring users to close one document before inspecting another. Drag-and-drop workflows are also supported, making it more convenient to compare or review several electronic invoices when processing collections of incoming documents during accounting, testing, development, or compliance work.

Attachment Preview

Electronic invoices can contain supporting attachments, and Quba includes functionality for inspecting attached content such as images and PDF files. This allows users to examine supporting material without treating the structured invoice and its associated documents as completely separate review tasks, improving context during invoice inspection.

Invoice Search Tools

Quba includes search functionality that helps users locate relevant information within displayed invoice content more efficiently. This is useful when structured documents contain numerous fields or line items and the reviewer needs to find a particular value without manually scanning the entire rendered invoice during detailed verification work.

Quba Old Versions

Version 1.5.0   Updated: 2025-05-30   Download

Version 1.4.2   Updated: 2024-11-01   Download

Version 1.4.1   Updated: 2024-10-30   Download