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SVG Compatibility Checker

Check SVG compatibility risks for browsers, email, React/JSX and more.

SVG compatibility

Check SVG compatibility across browsers, email and JSX.

Paste SVG markup, upload a file or try the built-in sample, then check how well it will work in different environments. The tool inspects browser features, email-client risks, React/JSX attribute differences, CSS background usage, sprite usage, animation and external dependencies, then reports a heuristic compatibility score with per-environment status and issues. It never modifies your SVG. These are heuristic checks — not a full browser or email-client support matrix. Everything runs locally; your file is not uploaded.

Local only Read-only No upload Compatibility report
Drop an SVG file here or paste SVG markup into the input editor below.
Score—
Browser—
Email—
React / JSX—
External deps—
Issues—
Status—
Preview

SVG preview

Paste SVG markup or try the sample, then click Check Compatibility.

Processed locally No upload Scripts: — Events: — External assets: — foreignObject: —
Input

SVG markup

Paste a complete SVG document or inline SVG element, then click Check Compatibility. The markup is never changed.

How It Works

SVG Compatibility Checker analyzes which features of an SVG might cause problems in different environments, entirely in your browser. Paste SVG markup, upload an .svg file or try the built-in sample, then click Check Compatibility. The tool inspects the SVG's elements and attributes and reports a per-environment status for modern browsers, inline HTML, CSS background-image use, React/JSX, email clients and icon-sprite usage. It flags browser features (filters, masks, clipPaths, foreignObject, patterns, gradients, use/symbol), animation (SMIL and CSS), external dependencies (images, web fonts, @import), and React/JSX attribute naming differences such as class to className or stroke-width to strokeWidth. Each finding is listed as an issue with a High, Medium, Low or Info severity, and combined into a heuristic compatibility score from 0 to 100. These are heuristic checks, not a full browser or email-client support matrix. SVGTrim checks SVG compatibility locally in your browser; your SVG file is not uploaded, and the tool does not modify the original markup.

Use Cases

  • Checking whether an SVG is safe to embed in an HTML email before sending a campaign
  • Finding React/JSX attribute renames needed before pasting an SVG into a component
  • Confirming an SVG will render when used as a CSS background-image (no scripts, has a viewBox)
  • Spotting features (foreignObject, scripts, external assets) that break in many renderers
  • Reviewing whether an icon can become a sprite symbol or already depends on one

FAQ

What is an SVG compatibility checker?

It is a tool that inspects an SVG and reports which features might not work in specific environments — browsers, email clients, React/JSX, CSS backgrounds and sprites. It produces a heuristic score and per-environment status so you can spot risky features before shipping.

Can SVG be used safely inside email?

It depends. Many email clients have limited or no SVG support, and most block scripts, event handlers, foreignObject, animation and external assets. The checker gives a stricter email status and flags the features most likely to cause problems, but it is heuristic — always test in the clients you target.

What SVG issues can appear in React/JSX?

JSX requires camelCase attribute names, so SVG attributes like class, stroke-width, fill-rule, clip-rule, stop-color and clip-path must become className, strokeWidth, fillRule, clipRule, stopColor and clipPath. Inline style must be a JSX object, and namespaced attributes like xlink:href may need adjustment. The checker reports these; it does not convert the markup.

Does SVG animation work everywhere?

No. SMIL animation support and behavior vary across environments, CSS animations do not run when an SVG is used as an image, and email clients generally do not animate SVG at all. The animation panel reports what kind of animation your SVG uses and the associated risks.

Is my SVG file sent to an external service?

No. SVGTrim checks SVG compatibility locally in your browser. Your SVG file is not uploaded, and the tool does not modify the original markup. There is no API call, no AI involved and no external service involved in the analysis.