XML Validator — Syntax & Structure Checker
Validate XML syntax and structure with detailed error reporting. Check well-formedness, view element statistics, and debug XML issues. Free and runs entirely in your browser.
How to Use XML Validator — Syntax & Structure Checker
How to Use XML Validator
Step 1: Enter Your XML
Paste or type your XML content into the editor. The tool validates in real-time as you type.
Step 2: View Validation Results
The validator checks for:
- Well-formedness - Proper XML structure
- Tag matching - Opening and closing tags match
- Attribute syntax - Valid attribute formatting
- Character encoding - Proper XML prolog
Step 3: Review Statistics
For valid XML, see detailed statistics:
- Elements - Total number of XML elements
- Attributes - Total attributes across all elements
- Text Nodes - Content-containing nodes
- Comments - XML comment count
- Max Depth - Deepest nesting level
- XML Prolog - Version and encoding info
Error Reporting
When validation fails, you get:
- Clear error message explaining the issue
- Line number where the error occurred
- Column position for precise location
Use Cases
- Validate XML configuration files
- Debug RSS/Atom feed issues
- Check SOAP message structure
- Verify SVG markup
- Test XML API responses
Frequently Asked Questions
Most Viewed Tools
Screen Size Converter — Diagonal Dimension Tool
Calculate screen width and height from diagonal size and aspect ratio. Convert between inches and centimeters for displays, TVs, and monitors with instant dimension calculations.
Use Tool →DPI Calculator — Print Resolution Tool
Calculate DPI (dots per inch), image dimensions, and print sizes. Convert between pixels and physical dimensions for printing and displays.
Use Tool →TOTP Code Generator — 2FA Testing Tool
Generate time-based one-time passwords from a TOTP secret key. Enter your base32 secret, choose a period and digit length, and get the current and next codes with a live countdown timer. Useful for testing and debugging 2FA integrations.
Use Tool →Password Entropy Calculator — Crack Time Estimator
Calculate the information-theoretic bit entropy of any password or API key. Detects character set pools automatically, shows the total number of possible combinations, and estimates crack time across five attack scenarios from rate-limited web logins to GPU cracking clusters.
Use Tool →JSONL Formatter — Line-by-Line Validator
Format, validate, and inspect JSON Lines (JSONL) and NDJSON files. Validates each line individually, reports parse errors by line number, outputs compact JSONL or a pretty-print preview, and lets you download the cleaned file.
Use Tool →JSON to Zod — Schema Generator
Generate Zod validation schema code from a JSON sample object. Infers z.string(), z.number(), z.boolean(), z.array(), z.object(), and z.null() types automatically. Handles nested objects, arrays of objects with optional field detection, and outputs copy-ready TypeScript with import and z.infer type alias.
Use Tool →TLS Cipher Suite Checker — Strength Analyzer
Check TLS protocol version compatibility and cipher suite strength ratings against current best practices. Supports IANA and OpenSSL cipher names — rates each suite as Strong, Weak, or Deprecated and explains why.
Use Tool →Seconds to Time Converter — HH:MM:SS Formatter
Convert seconds to HH:MM:SS time format instantly with precise calculations and easy-to-read formatting.
Use Tool →Related Data Engineering & Processing Tools
Dataset Analyzer — Stats & Quality Reporter
FeaturedUpload a CSV, Excel, or JSON file to understand its structure, quality, and patterns. Get column profiles, data quality scores, duplicate detection, outlier analysis, and AI-powered insights — all in your browser.
Use Tool →JSON Formatter & Validator — Real-Time Error Tool
FeaturedFormat, validate, and pretty-print JSON with our developer-friendly editor.
Use Tool →CSV to XML Converter — Custom Tag Builder
Convert CSV to XML - Transform comma-separated values to XML format with customizable elements and pretty printing
Use Tool →CSV to Excel Converter — XLSX Export Tool
Convert CSV to Excel - Transform comma-separated values to Excel spreadsheet with auto-width columns
Use Tool →CSV Row Filter — Conditional Row Selector
Filter CSV rows based on column values and conditions. Create focused datasets by filtering data instantly.
Use Tool →XML to CSV Converter — Auto Field Extractor
Convert XML to CSV - Transform XML documents to comma-separated values with automatic field extraction
Use Tool →XPath Validator — Expression Tester
Validate XPath expressions instantly in your browser. Paste an optional XML document to evaluate the expression and see matched nodes. Supports XPath 1.0 with all axes, predicates, and built-in functions.
Use Tool →CSV to HTML Table — Styled Code Generator
Convert CSV data to HTML table format with customizable styling. Generate clean, semantic table markup instantly.
Use Tool →Share Your Feedback
Help us improve this tool by sharing your experience