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xmlvalid VS XML Copy Editor

Compare xmlvalid VS XML Copy Editor and see what are their differences

xmlvalid

Validate XML and e-invoices up to 1 GB in your browser: XSD, DTD, RelaxNG and official business rules

Rating
0 reviews
Pricing
Freemium $29 / Monthly (Pro)
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Alternatives Is it good?
XML Copy Editor

XML Copy Editor is a fast, free, validating XML editor.

Rating
0 reviews
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Alternatives Is it good?
KindProxy
KindProxy offers rotating residential and static ISP proxies across 198+ countries and regions. Featuring HTTP(S) and SOCKS5 support, sticky sessions, and city and ASN targeting, it's ideal for web scraping, SEO monitoring, market research, ad verifi sponsored
Note: These products don't have any matching categories. If you think this is a mistake, please edit the details of one of the products and suggest appropriate categories.

Which is more popular?

Data Validation popularity
100% vs 0%
alternatives listed
9 vs 57

Base details

Website, pricing, platforms and company facts side by side.

xmlvalid
XML Copy Editor
Website xmlvalid.com xml-copy-editor.sourceforge.io
Pricing
Freemium $29 / Monthly (Pro) Official pricing
—
Platforms
Web REST API gRPC APISOAP API
—
Company Startup from Ukraine · 1 - 9 employees · 2026 —
Listed in
Developer Tools APIs CI/CD XML Data Validation Finance +3
Development Text Editors Task Management IDE +1

About xmlvalid and XML Copy Editor

In their own words, as submitted to SaaSHub.

xmlvalid
XML Copy Editor

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,...

Read more about xmlvalid

No description of XML Copy Editor yet.

Features and specs

What each product offers, as listed by its team.

xmlvalid 19 features
XML Copy Editor 5 features
  • Schema languages
    XSD 1.0, DTD, RelaxNG (XML and compact)
  • Business rules
    7,700+ Schematron rules (EN 16931, Peppol BIS and PINT, XRechnung, Factur-X, national CIUS) plus your own .sch
  • Schema catalog
    177 official schemas with all their include files
  • Country guides
    E-invoicing in 24 countries, the profile picked from the invoice automatically
  • Max File Size
    50 MB without an account, 1 GB with a free account (5 GB tested)
  • Batch validation
    A folder or .zip of up to 1,000 documents
  • Privacy
    Validated in the browser, nothing uploaded
  • Input methods
    Upload, paste, URL, or a folder or .zip of up to 1,000 documents
  • PDF invoices
    Factur-X, ZUGFeRD and ISDOC, with PDF/A (veraPDF) and PDF text checks
  • Error details
    Line and column, explanations for libxml2, Java (Xerces) and .NET messages
  • E-invoice Detection
    Profile picked automatically from the document
  • API
    REST (OpenAPI 3.1), SOAP, MCP server, SDKs for PHP, Laravel, Symfony, Python and JavaScript
  • CLI
    CLI (npm @xmlvalid/cli), GitHub Action, GitLab CI, pre-commit
  • URL monitors
    Alerts by email or webhook when a feed starts failing
  • Reports
    PDF, HTML, JSON export, share links
  • Dark Mode
  • Integrations
    n8n, Apify, Postman
  • Monitoring
    URL monitors with email and webhook alerts
  • Free Tools
    XML formatter, XPath tester, XSLT transformer, XML diff, XML to JSON / CSV, XSD generator, XSD to XML, e-invoice viewer
  • Open Source
    XML Copy Editor is open source, which means it is available for free and allows users to modify and distribute the software according to their needs.
  • Validation
    It offers validation support for XML against DTDs and XML schemas, ensuring that the XML documents are properly structured and error-free.
  • User-Friendly Interface
    The editor provides a straightforward and easy-to-navigate interface, which is ideal for beginners and experienced users alike.
  • Cross-Platform Compatibility
    XML Copy Editor is compatible with multiple operating systems including Windows and Linux, offering versatility to users across different platforms.
  • XSLT Support
    It includes support for XSLT, allowing transformations of XML documents into other formats.

Possible disadvantages

  • Limited Features
    Compared to more advanced XML editors like Oxygen XML Editor, XML Copy Editor can be limited in functionalities, which might not meet the needs of all professional users.
  • Outdated UI
    The user interface, while functional, may appear dated compared to modern software, which could impact usability and appeal.
  • Lack of Active Development
    The software does not have frequent updates or active development, which might lead to issues with bug fixes or support for newer XML technologies.
  • Windows Focus
    Although it is cross-platform, the primary focus seems to be on the Windows version, which may result in less optimized experiences on other operating systems.
  • Limited File Format Support
    Support is focused on XML, and it offers limited compatibility with other file formats, which might be a drawback for users working with diverse data types.

Category popularity

How often each product is chosen within a category, 0–100% relative to the other.

Score bands 0–20 21–40 41–50 51–60 61–100
xmlvalid
XML Copy Editor
100% 100%
Data Validation
0% 0%
0% 0%
Text Editors
100% 100%
100% 100%
Finance
0% 0%
0% 0%
Task Management
100% 100%

Questions & Answers

As answered by people managing xmlvalid and XML Copy Editor.

Which are the primary technologies used for building your product?

xmlvalid's answer

  • Rust and libxml2 (validation engine), compiled to WebAssembly
  • SaxonJS (Schematron business rules)
  • veraPDF (PDF/A checks)
  • Laravel and Livewire (PHP)
  • Tailwind CSS
  • PostgreSQL, Redis, Meilisearch
  • Cloudflare

What makes your product unique?

xmlvalid's answer

  • Schema validation and e-invoicing business rules in one place: XSD, DTD and RelaxNG, plus 7,700+ Schematron rules of EN 16931, Peppol BIS and PINT, XRechnung, Factur-X and national formats from France and Italy to Saudi Arabia, Mexico and Brazil
  • Built for large files: a streaming Rust engine (libxml2 compiled to WebAssembly) validates documents up to 1 GB in the browser with flat memory (5 GB tested)
  • 177 official schemas ready to use, and e-invoice profiles detected automatically from the document
  • E-invoice PDFs (Factur-X, ZUGFeRD, ISDOC) checked whole: the XML inside, PDF/A, and the PDF's text against the XML
  • Every error links to a page explaining why it fails and how to fix it, for libxml2, Java and .NET messages
  • The same checks in CI and integrations: REST API, SOAP, MCP server for AI agents, CLI, GitHub Action, n8n

Why should a person choose your product over its competitors?

xmlvalid's answer

  • Desktop editors (XMLSpy, Oxygen) are powerful but expensive and need installing; xmlvalid works in the browser for free
  • Simple online validators check one schema and stop at a few MB; xmlvalid streams up to 1 GB and ships schemas with all their imports
  • E-invoice validators (KoSIT, Peppol testbeds) check one format each and have no CI tooling; xmlvalid covers many formats and countries, reads PDF invoices, and has an API, CLI and GitHub Action
  • Documents are validated in the browser and not uploaded

How would you describe the primary audience of your product?

xmlvalid's answer

  • Developers and integrators building or receiving e-invoices (Peppol, XRechnung, Factur-X, FatturaPA, KSeF, ZATCA, CFDI, NF-e, UBL, CII)
  • ERP and accounting software vendors preparing for national e-invoicing mandates
  • Teams that exchange XML with partners: payments (ISO 20022), healthcare (HL7 CDA, FHIR), feeds and sitemaps
  • DevOps engineers who want XML checks in CI pipelines
  • Anyone who needs to validate a large XML file quickly without installing software

What's the story behind your product?

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

User comments

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