
E-Invoice.Space
Invoice-Converter
OctoPDF
Mustang Project
Peppol Validator
aiDoks.eu
NormAPI
PDF to XRechnung and ZUGFeRD converter, validator and viewer.

CodeBeautify
XML ValidatorBuddy
Oxygen XML Editor
Altova XMLSpy
xmllint
Peppol Validator
Schema Validator Extension
Validate XML and e-invoices up to 1 GB in your browser: XSD, DTD, RelaxNG and official business rules
Which is more popular?
Website, pricing, platforms and company facts side by side.
|
|
|
|
|---|---|---|
| Website | e-rechnungs-studio.de | xmlvalid.com |
| Pricing | ||
| Platforms | ||
| Company | Startup from Casserus Ug (Haftungsbeschränkt) · 2025 | Startup from Ukraine · 1 - 9 employees · 2026 |
| Listed in |
In their own words, as submitted to SaaSHub.


E-Rechnungs-Studio is a German e-invoicing web app for converting, validating and viewing electronic invoices. It helps small businesses, freelancers, agencies, accountants and service providers in Germany handle individual e-invoices without installing full accounting software. Users can upload...
xmlvalid is an online XML validator built for production-size documents and e-invoicing. Validation XSD 1.0, DTD, RelaxNG (XML and compact syntax) 7,700+ Schematron business rules: EN 16931 (UBL and CII), Peppol BIS and PINT, XRechnung, ZUGFeRD / Factur-X, and national rules from France, Italy,...
What each product offers, as listed by its team.


An editorial look at what each product does well and who it suits.


Overall verdict
Why this product is good
Recommended for
No analysis of xmlvalid yet.
How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing E-Rechnungs-Studio.de and xmlvalid.
E-Rechnungs-Studio.de's answer
A person should choose E-Rechnungs-Studio if they want to keep their current invoicing process while becoming ready for e-invoicing.
Many competing tools require users to create invoices from scratch inside a new invoicing system. E-Rechnungs-Studio focuses on the transition problem: businesses that already create PDF invoices and now need to convert, validate and view compliant e-invoices.
It is especially useful for small businesses that do not want to adopt a full accounting suite just to handle XRechnung or ZUGFeRD. The product provides a focused converter, validator and viewer for German e-invoicing workflows.
xmlvalid's answer:
E-Rechnungs-Studio.de's answer
We do not publicly list individual customer names.
E-Rechnungs-Studio is primarily used by small businesses, freelancers, agencies, consultants, service providers and German companies preparing for B2B e-invoicing requirements. Our focus is on helping businesses that already create PDF invoices and want a simple way to convert, validate and view XRechnung and ZUGFeRD files.
E-Rechnungs-Studio.de's answer
E-Rechnungs-Studio is unique because it gives businesses a simple AI-driven path from their existing PDF invoicing workflow to compliant e-invoicing.
Instead of forcing users to switch accounting software, rebuild their invoice templates, or change their whole process, E-Rechnungs-Studio lets them upload an existing invoice PDF and convert it into structured e-invoice formats such as XRechnung and ZUGFeRD.
Its strongest advantage is the quality of the invoice data extraction. The product is designed to understand existing PDF invoices and turn them into usable e-invoice data with minimal manual work.
xmlvalid's answer:
E-Rechnungs-Studio.de's answer
The primary audience is small businesses, freelancers, agencies, consultants, service providers and other German B2B companies that currently create invoices as PDFs and need a smooth transition to e-invoicing.
These users usually do not want to replace their existing invoicing workflow immediately. They need a practical tool that helps them convert current PDF invoices into compliant e-invoices, validate the results and understand received e-invoice files.
E-Rechnungs-Studio is built for businesses that want to move from basic PDF invoicing to XRechnung and ZUGFeRD step by step.
xmlvalid's answer:
E-Rechnungs-Studio.de's answer
E-Rechnungs-Studio was built because we had this exact problem ourselves.
We run a German company and needed to prepare for mandatory B2B e-invoicing. Like many small businesses, we already had an invoicing process that worked well. We did not want to completely change our workflow, regenerate all invoices manually, rebuild templates, or move to a full new accounting system just to create compliant e-invoices.
We wanted a smoother path: keep creating invoices in the way we already knew, then convert those existing PDFs into valid e-invoices.
E-Rechnungs-Studio was created to solve that transition problem for other businesses in the same situation.
xmlvalid's answer:
xmlvalid is built and run by Oleksii Babintsev, a developer from Ukraine, so questions and bug reports reach the person who builds the engine. It started as a streaming validator for XML files too large for typical online tools, and grew into e-invoicing as countries made structured invoices mandatory: business rules for EN 16931, Peppol, XRechnung and national formats in 24 countries, PDF invoices, an API, CLI and GitHub Action for CI, and monitors for XML feeds. While building it, we found and fixed a slowdown in libxml2's validation of large files and contributed the fix upstream. It launched in October 2026
E-Rechnungs-Studio.de's answer
E-Rechnungs-Studio is built as a modern web-based SaaS platform using current cloud, document-processing and AI-assisted data extraction technologies.
The product combines AI-driven invoice data extraction with standards-focused e-invoice processing for formats such as XRechnung, ZUGFeRD and EN 16931. The technical focus is on reliable PDF understanding, structured invoice data generation, validation and a simple browser-based user experience.
We do not publicly disclose the full internal technology stack.
xmlvalid's answer:
Share your experience with using E-Rechnungs-Studio.de and xmlvalid. For example, how are they different and which one is better?
When comparing E-Rechnungs-Studio.de and xmlvalid, you can also consider the following products.

Simple PDF files become machine-readable, XML invoices become human-readable.
Compare E-Invoice.Space to E-Rechnungs-Studio.de or xmlvalid:

Online Tools like Beautifiers, Editors, Viewers, Minifier, Validators, Converters for Developers: XML, JSON, CSS, JavaScript, Java, C#, MXML, SQL, CSV, Excel
Compare CodeBeautify to E-Rechnungs-Studio.de or xmlvalid:
Convert existing PDF/DOCX invoices into validated XRechnung, ZUGFeRD, Factur-X and UBL without replacing your ERP.
Compare Invoice-Converter to E-Rechnungs-Studio.de or xmlvalid:

Makes working with XML as fast and convenient as never before.
Compare XML ValidatorBuddy to E-Rechnungs-Studio.de or xmlvalid:

Free online verifier for PDF/A, PDF/UA, ZUGFerD/Factur-X and digital signatures.
Compare OctoPDF to E-Rechnungs-Studio.de or xmlvalid:

Oxygen XML Editor provides a comprehensive suite of XML authoring and development tools.
Compare Oxygen XML Editor to E-Rechnungs-Studio.de or xmlvalid: