xmlvalid vs Liquid Technologies online validator

Last updated · 19 October 2026

At a glance

What	xmlvalid	Liquid Technologies
Price	Free in the browser. API: 100 validations a month free, Pro from $29 a month	Free online; Liquid Studio for the desktop has a free Community Edition and paid editions
Where the check runs	In your browser (WebAssembly): the file is not uploaded. The API and URL monitors run on our servers	On Liquid's servers: "all data is stored on our servers for processing and may be retained for service improvement"
Document size	Up to 1 GB (50 MB without an account); API up to 1 GB on Pro	Up to 512 KB online; unlimited in the desktop editions
Schema files	Many: an XSD or RelaxNG set with its includes and imports, chosen together or as a folder	One schema file online
Schema languages	XSD 1.0, DTD, RelaxNG (XML and compact syntax), Schematron	XSD, RelaxNG and Schematron; well-formedness on its own page
Input	Paste, file, URL, a folder or .zip of up to 1,000 documents; Factur-X and ZUGFeRD PDFs	Pasted into a form
E-invoices	71 profiles with their official schemas and business rules, for 21 countries with a page each	Not offered
Findings	Line and column, the rule id, the XPath where a rule fired, and a page for every rule and for 90 common error messages	Severity, location and message
API and CI	REST API with OpenAPI, command-line client, GitHub Action, SDKs for PHP (with Laravel and Symfony packages), Python and TypeScript, an MCP server for AI agents, n8n, Apify and a Postman collection	Not offered for the online validators

Where xmlvalid fits better

Large documents: up to 1 GB, streamed, where the online validators stop at 512 KB.
Real schema sets: an XSD that includes or imports others works as uploaded, and so do the 166 schemas of the catalog.
Privacy: the document is validated in your browser and not uploaded, so there is nothing to retain.
E-invoices with their business rules (Peppol, XRechnung, Factur-X and more), and an API, a GitHub Action and SDKs for the same checks in CI.
Error messages explained: what each common message means and how to fix it.

Where Liquid Technologies fits better

Designing schemas: Liquid Studio is a desktop IDE with a graphical XSD editor, and its data binder writes code from a schema. xmlvalid validates and does not edit schemas.
Everything offline on your desktop, including the free Community Edition.

Questions

Is my document kept?

Liquid's online validators say that data is stored on their servers and may be retained. xmlvalid validates in your browser, so the document never reaches our servers; only the API and URL monitors validate there, and they delete the document when the check finishes.

My schema includes other files. Can I validate against it?

Yes, in xmlvalid: choose all the files of the set (or their folder) and mark the main one; includes and imports resolve between them. Liquid's online validators take one schema file.

Can xmlvalid write an XSD from a sample?

Yes, with the free XSD generator, which also checks the samples against the result. The XML from XSD tool goes the other way.

How we compared

What the table says about Liquid Technologies comes from its own public pages, as they read on 19 October 2026; "Not stated" means we found no answer there. Products change: if something here is out of date, tell us and we will correct it.

xmlvalid vs Liquid Technologies' online validators