Compare XML File Online — Free, Instant, No Upload
Open your XML files, copy the contents, and paste them below to see every difference in seconds. Changed elements are highlighted line-by-line with character-level precision. No account, no file upload, no install.
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Compare config XML files between environments
When a bug only reproduces on staging or production, the culprit is often one changed line in a config XML file — web.config, pom.xml, AndroidManifest.xml, or Spring beans. Open both files in your editor, copy the contents, and paste them here to instantly see which attribute or element value diverged.
Diff exported XML data files
Many systems export data as XML files — CRM exports, ERP feeds, database backups, product catalog files, or invoice data. When you receive two versions of an XML export and need to know exactly what changed, open both files, copy their contents, and paste them side by side. The diff highlights every record that was added, modified, or removed.
Verify XML file transformations
After running an XSLT transform, a migration script, or a schema upgrade on an XML file, paste the before and after versions here to confirm only the intended changes were made. Character-level highlighting catches even a single-digit version bump or a renamed namespace prefix that a word-level diff would miss.
No upload — your XML files stay local
XML files often contain sensitive data: database connection strings, internal API endpoints, SOAP auth tokens, or private business records. This tool never sends anything to a server. Open your XML file locally, copy the text content, and paste it here — all diffing runs entirely in your browser via JavaScript. Your file contents are never transmitted, stored, or logged.
Works with any XML-based file format
SOAP envelopes, RSS/Atom feeds, XSLT stylesheets, XSD schemas, WSDL files, SVG graphics, NuGet package specs, MSBuild project files, Android manifests, Maven pom.xml, Spring configuration, or any custom XML format — if it is valid XML, paste it in. HTML documents work too.
Side-by-side and inline diff views
Side-by-side places both XML file contents in parallel columns — ideal for long files where you want to compare structure visually. Inline merges them into a single annotated stream — useful when the files differ heavily and you want to read all changes in sequence. A stats bar shows total lines added, removed, and unchanged.
How to compare XML files online in 3 steps
- 1
Open your first XML file and copy its contents
Open the first XML file in any text editor, IDE, or file viewer. Select all the text (Ctrl+A or Cmd+A) and copy it (Ctrl+C or Cmd+C). Then paste it into the left editor here.
- 2
Open your second XML file and paste it on the right
Open the second XML file the same way, copy all its contents, 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 file; red lines were in the first file 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 XMLs online for comparing pasted XML snippets from API responses or terminal output.
Frequently asked questions
How do I compare XML files online for free?
Open your first XML file in a text editor, copy all the text, and paste it into the left editor on this page. Do the same for your second XML file and paste it into the right editor. 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 XML files online without uploading them?
Yes. Open each XML file locally, copy its text content, and paste it into the editors here. All comparison logic runs in your browser using JavaScript — your file contents are never sent to any server, never stored, and never logged. Safe for production config files, internal exports, or any XML containing sensitive data.
What types of XML files can I compare here?
Any valid XML file: web.config, pom.xml, AndroidManifest.xml, Spring configuration files, XSLT stylesheets, XSD schemas, WSDL files, RSS/Atom feeds, SVG files, MSBuild project files, NuGet package specs, data export files, and any custom XML format. HTML files work too since HTML is based on XML.
Is this tool free to compare XML files online?
Completely free with no rate limits, no account, and no usage caps. Paste and compare as many XML files as you need.
How do I compare two XML config files from different environments?
Open the config XML file from your first environment (e.g., staging) in a text editor and copy all the text. Paste it into the left editor. Then open the config file from your second environment (e.g., production), copy it, and paste into the right editor. The diff immediately shows every element and attribute value that differs between the two environments.
What does the character-level XML file diff show me?
Within lines that changed between the two XML files, 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.
Can I compare large XML files online?
Yes. The editor handles large XML files because all processing runs locally in your browser. For very large files, paste them in and allow a moment for the diff to render. There is no size limit imposed by the server since no upload occurs.