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SVG Font Dependency Checker

Detect external font dependencies and text rendering risks.

SVG font dependencies

Check SVG font dependencies and text rendering risks.

Paste SVG markup, upload a file or try the built-in sample, then analyze which fonts the text relies on. The tool inspects every text and tspan element, font-family attributes, inline styles and <style> CSS rules, classifies fonts as web-safe, system, custom or generic, and flags external font references and dependency risks. It never modifies your SVG and does not convert text to outlines. Everything runs locally; your file is not uploaded.

Local only Read-only No upload Font report
Drop an SVG file here or paste SVG markup into the input editor below.
Text elements—
Fonts—
Web safe—
Custom—
External refs—
Risk—
Preview

SVG preview

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

Processed locally No upload Fonts: — External fonts: — Custom fonts: —
Input

SVG markup

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

How It Works

SVG Font Dependency Checker analyzes which fonts an SVG's text relies on, entirely in your browser. Paste SVG markup, upload an .svg file or try the built-in sample, then click Check Font Dependencies. The tool walks every text and tspan element, resolving font-family from inline attributes, inline style declarations and <style> CSS rules (including inheritance from parent groups), and reads the related typography properties such as font-size, font-weight and font-style. Each font is classified as Web Safe, System, Custom, Generic or Unknown, and the tool detects external font dependencies — @font-face, @import, Google Fonts and Adobe Fonts / Typekit references and font file URLs. It then reports a dependency risk level (Low, Medium or High), the per-element font usage, the font sources in play and the specific portability risks. It never modifies your SVG and does not convert text to outlines. SVGTrim checks SVG font usage locally in your browser; your file is not uploaded and the original markup is not changed.

Use Cases

  • Checking whether an SVG's text will render the same on a device that does not have its custom fonts installed
  • Finding external font dependencies (Google Fonts, Adobe Fonts, @font-face) before shipping an SVG
  • Confirming a logo or banner uses only web-safe or system fonts for maximum portability
  • Reviewing which text elements use custom fonts and may need to be converted to paths
  • Spotting font-family stacks that are missing a generic fallback like sans-serif

FAQ

What is an SVG font dependency?

It is any font an SVG's text needs in order to render as intended. If the text uses a font that is not embedded in the file and not installed on the viewer's device, the browser substitutes a different font, which can change the look, spacing and line wrapping of the text.

Is using a custom font risky?

It can be. Custom fonts (like Montserrat, Inter or Poppins) are not guaranteed to exist on every device, so unless they are embedded or loaded via CSS the text may fall back to a default font. The checker flags custom fonts as a medium risk and external font references as a high risk.

Why can an SVG look different on different devices?

Most often because of fonts. If the SVG references a font that a device does not have, the text is rendered in a substitute font with different metrics. Other factors include missing external resources and unsupported features, but font availability is the most common cause for text-heavy SVGs.

What is a web-safe font?

A web-safe font is one that is pre-installed on virtually all operating systems and browsers — such as Arial, Helvetica, Verdana, Georgia, Times New Roman and Courier New. Using web-safe or system fonts means the text renders consistently without any external dependency.

Is my SVG file sent to an external service?

No. SVGTrim checks SVG font usage 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.