Compare Two XMLs Online — Free, Instant, No Upload
Paste two XMLs and see every difference in seconds. Changed elements are highlighted line-by-line with character-level precision. No account, no upload, no install.
Paste text in both panels above to compare
Or to see how it works
Compare two XML API responses
Got two XML payloads from a REST or SOAP API — one from staging, one from production, or two consecutive calls that should be identical? Paste both and the diff pinpoints every element that was added, removed, or changed. No terminal, no local tooling, no XML parser to install.
Diff two config XMLs from different environments
When a bug only reproduces in one environment, the culprit is often a single changed line in a config XML — web.config, pom.xml, AndroidManifest.xml, Spring beans. Paste the two versions and the diff shows exactly which attribute or element value diverged.
Verify an XML migration or transformation
After running an XSLT transform, a data migration script, or a schema upgrade, paste the before and after XMLs to confirm only the intended changes were made. Character-level highlighting catches even single-digit version bumps or renamed namespace prefixes that a word-level diff would miss.
No upload — your XMLs stay local
Many XMLs contain sensitive data: database connection strings, internal endpoints, SOAP auth tokens. This tool never sends anything to a server. All diffing runs entirely in your browser via JavaScript. Paste freely without worrying about data leaving your machine or being logged anywhere.
Works with any two XML-based formats
SOAP envelopes, RSS/Atom feeds, XSLT stylesheets, XSD schemas, WSDL descriptors, SVG graphics, NuGet package specs, MSBuild project files, Android manifests, or any custom XML format — if it is valid XML, paste it in. HTML documents work too, since HTML shares XML syntax.
Side-by-side and inline diff views
Side-by-side places both XMLs in parallel columns — ideal when both are long and you want to compare structure visually. Inline merges them into a single annotated stream — useful when the XMLs differ heavily and you want to read all changes in order. A stats bar shows total lines added, removed, and unchanged.
How to compare two XMLs online in 3 steps
- 1
Paste your first XML on the left
Copy the first XML — from a file, an HTTP response, a terminal output, or a code editor. Paste it into the left editor. Works with any valid XML snippet or full document.
- 2
Paste your second XML on the right
Copy the second XML and paste it into the right editor. This is the version you are comparing against — a newer revision, a different environment, or a transformed output.
- 3
Read the highlighted diff
Green lines are new in the second XML; red lines were in the first but not the second. Within changed lines, the exact characters that differ are marked more intensely. Toggle between side-by-side and inline views using the toolbar above the editors.
More XML comparison options
The XML Diff Checker covers the same functionality with additional guidance for SOAP envelopes, HTML, and XML schema files. Or see compare two XML files online for a step-by-step guide to comparing XML files from disk.
Frequently asked questions
How do I compare two XMLs online for free?
Paste the first XML into the left editor and the second XML into the right editor on this page. The diff runs instantly in your browser — added lines are highlighted green, removed lines red, and the exact characters that changed within a line are marked more intensely. No install, no account, no file upload required.
Can I compare two XML files online without uploading them?
Yes. Open each XML file in any text editor, copy the contents, and paste into the editors here. All comparison logic runs locally in your browser using JavaScript — your XML is never sent to any server, never stored, and never logged. Safe for production payloads, config files, or any XML containing sensitive data.
What types of XML can I compare here?
Any valid XML: SOAP envelopes, REST API responses, Maven pom.xml, Android manifests, Spring configuration files, RSS/Atom feeds, XSLT stylesheets, XSD schemas, SVG files, web.config, MSBuild project files, and any custom XML format. HTML documents work too since HTML is based on XML.
Is this tool free to compare two XMLs online?
Completely free with no rate limits, no account, and no usage caps. Paste and compare as many XMLs as you need.
How do I compare two XML API responses online?
Copy the first XML API response from your HTTP client (Postman, curl output, browser DevTools) and paste it into the left editor. Copy the second response and paste it into the right editor. The diff immediately shows every element that was added, removed, or changed between the two responses.
What does the character-level XML diff show me?
Within lines that changed, the tool highlights the exact characters that differ with a more intense background color. This lets you spot a single changed attribute value, a renamed element, or a modified URL inside a long XML string without reading the whole line character by character.