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SVG Validator

Validate

Check SVG markup for parse errors, missing SVG roots, basic structure issues, and file stats.

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Where SVG Validator fits

SVG Validator checks whether pasted SVG markup is parseable, has a real SVG root, and exposes basic document stats.

Related guides

What it checks

The validator catches empty input, malformed XML, non-SVG roots, missing viewBox, script elements, and common structural warnings. Each finding states what it means so you can act without cross-referencing the specification.

Severity: errors versus warnings

Malformed XML and non-SVG roots are hard failures — the file will not render. Missing viewBox, active scripts, and structural oddities are warnings: the file may render fine today but misbehave when scaled, themed, or reused.

Findings report error — missing viewBox warning — script element found ok — markup parses cleanly Fix hard failures first, judge style findings in context, then re-run for a clean report. every finding states what it means.
SVG Validator reports findings with severity and context — fix hard failures first, then re-run for a clean report.
A findings report with error, warning, and ok rows next to a magnifier, illustrating how SVG Validator reports structural findings.

When to use it

Use it before optimizing, converting, or embedding SVG files from unknown sources or design-tool exports, and again after any manual edit that touched structure.

Pairing with other tools

Validation is read-only by design. Fix what it finds with the editor or optimizer, then re-run the check until the report is clean.

What gets checked

SVG Validator parses the document locally and validates it against structural rules and this tool's focus area, reporting each finding with enough context to locate it.

Common findings and fixes

Typical issues include missing viewBox attributes, duplicate IDs, unsafe active content, and deprecated structures. Most have a direct fix in the matching edit or optimize tools.

How to use

  1. Paste SVG. Paste SVG markup or load the sample.
  2. Read the report. Check errors, warnings, and document stats.
  3. Fix and re-check. Update the SVG and run validation again.
  4. Ship. Embed or export only once the report has no errors.

Frequently asked questions

Does this validate the full SVG specification?
No. The first version focuses on parseability and practical structure checks.
Does my SVG leave the browser?
No. Validation runs locally in the browser.
Can it fix invalid SVG?
This tool reports problems. Repair tools are planned separately.
Why does a file that renders still get warnings?
Rendering today does not guarantee correct scaling or safe embedding tomorrow — warnings flag exactly those risks.
Does it check accessibility?
Basic structure only. The dedicated accessibility checker covers roles, titles, and labeling in depth.
Is a clean report a security guarantee?
No. It blocks known active content, but treat files from unknown sources as untrusted until reviewed.
Should I validate before or after optimizing?
Both: before, to catch inherited problems; after, to confirm the optimization did not break structure.
Is SVG Validator free?
Yes. SVGKit tools are free to use with no account required.