
Ryte
Link Research Tools
Page Optimizer Pro
MegaIndex
Rankz
Sur.ly
Schema.org
Schema App empowers the Digital Marketer to own their schema markup strategy through to implementation without ever writing code.

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 | schemaapp.com | xmlvalid.com |
| Pricing | ||
| Platforms | — | |
| Company | — | Startup from Ukraine · 1 - 9 employees · 2026 |
| Listed in |
In their own words, as submitted to SaaSHub.


No description of Schema App yet.
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.


Possible disadvantages
Walkthroughs and reviews on video.
Schema App Editor Preview
More videos
No xmlvalid videos yet. You could help us improve this page by suggesting one.
How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing Schema App and xmlvalid.
xmlvalid's answer:
xmlvalid's answer:
xmlvalid's answer:
xmlvalid's answer:
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
Share your experience with using Schema App and xmlvalid. For example, how are they different and which one is better?
When comparing Schema App and xmlvalid, you can also consider the following products.

Ryte is a web-based software invented for technical optimization for search engines and improvement of websites.
Compare Ryte to Schema App 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 Schema App or xmlvalid:

Recover, Protect, Learn and Grow your SEO with LRT.
Compare Link Research Tools to Schema App or xmlvalid:

Makes working with XML as fast and convenient as never before.
Compare XML ValidatorBuddy to Schema App or xmlvalid:

Page Optimizer Pro is an on-page SEO tool, allows marketers to produce flawlessly optimized pages for Google with ease.
Compare Page Optimizer Pro to Schema App or xmlvalid:

Oxygen XML Editor provides a comprehensive suite of XML authoring and development tools.
Compare Oxygen XML Editor to Schema App or xmlvalid: