How to svg to jsx converter: common problems and solutions
- Step 1Read the exact error or warning text — React is specific. A
styleprop error means an unconverted inline style string. An 'unknown attribute' / 'is using incorrect casing' warning names the offending attribute — usually a filter primitive the converter didn't rename. A blank-but-present icon often means an id collision, not a conversion bug. - Step 2Search the converted output for style=" — If React threw on
style, find everystyle="…"in the component and convert it to an object:style={{ fillRule: 'evenodd', fill: '#000' }}. The converter never does this for svg-to-jsx output — it's the most common manual fix. - Step 3Check for kebab-case attributes React names — If a warning names a hyphenated attribute (
flood-color,color-interpolation-filters), camelCase it by hand. The 28-attribute list covers icon paint/stroke/stop/marker/font attributes but not filter primitives. - Step 4Look for repeated ids when an icon renders blank — If the icon is correct alone but wrong when rendered twice, you have an id collision. The converter keeps ids verbatim; prefix internal ids per component and rewrite the matching
url(#…)/href="#…"references. - Step 5Validate the component name — If
tscerrors onexport const, your name isn't a valid identifier (starts with a digit, has symbols). Re-run with a clean PascalCase name in the Component name field. - Step 6Decide: fix the SVG or fix the JSX — If the SVG renders wrong in a plain
.htmlfile too, the source is broken — fix it (svg-viewbox-fixer, re-export) before converting. If it's fine as HTML but breaks in React, it's a JSX issue from this list.
Symptom → cause → fix
Every common svg-to-jsx failure mapped to what the converter does (or deliberately doesn't do).
| Symptom | Cause | Fix |
|---|---|---|
React throws on the style prop | Inline style="…" string left unconverted (converter doesn't objectify styles) | Convert each to style={{ … }}, or strip inline styles before converting |
| 'Unknown attribute' / casing warning | Filter-primitive attr (flood-color, lighting-color) not on the 28-attr list | camelCase it by hand; or keep filter art as <img>/sprite |
| Icon renders blank on the 2nd instance | Duplicate clipPath/gradient id — converter keeps ids verbatim | Namespace ids per component + rewrite url(#…)/href refs |
tsc error on export const <name> | Component name isn't a valid identifier (leading digit/symbol) | Set a clean PascalCase name in the Component name field |
Minor warning about xmlns on <svg> | Root xmlns is kept (only xmlns:xlink is removed) | Harmless; delete the xmlns attr to silence it |
| Icon ignores theme colour | Hard-coded hex paints (no currentColor) — converter preserves them | Pre-convert to currentColor (svg-to-tailwind current mode) |
| Pasted source rejected | Root isn't <svg> / not valid SVG XML | Wrap the fragment in a real <svg viewBox=…> |
Is the attribute handled? Quick lookup
If your attribute is in the 'Renamed' column it's fixed automatically; otherwise it passes through and may warn or break.
| Category | Renamed automatically | Passes through (may warn/break) |
|---|---|---|
| Class / a11y | class→className, for→htmlFor, tabindex→tabIndex | data-*, aria-* (fine as-is) |
| Stroke | all 7 stroke-* (width/linecap/linejoin/dasharray/dashoffset/miterlimit/opacity) | — |
| Fill / stop | fill-rule, fill-opacity, stop-color, stop-opacity | — |
| Clip | clip-path, clip-rule | mask (already valid), enable-background (warns) |
| Text / font | font-size/-family/-weight, text-anchor, dominant-baseline | letter-spacing, word-spacing, baseline-shift (warn) |
| Filters | — | flood-color, flood-opacity, lighting-color, color-interpolation-filters (warn) |
| Refs / ns | xlink:href→href, xmlns:xlink removed | xmlns kept (warns) |
| Style | — | style="…" string → React throws |
Red vs green: which failures block rendering
Some issues crash the component; others are warnings that still render. Triage accordingly.
| Issue | Severity | Renders? |
|---|---|---|
| Inline style string | Crash (throws) | No |
| Invalid component name | Build error | No (won't compile) |
| Duplicate ids | Visual bug | Yes, but wrong |
| Filter attr kebab-case | Dev warning | Usually yes |
| Kept root xmlns | Dev warning | Yes |
| Hard-coded hex (no theming) | Not an error | Yes (just not themed) |
Cookbook
Copy-paste diagnostics for the failures you'll actually hit, grounded in the converter's real behaviour.
The style-prop crash and its fix
The single most common conversion failure. The converter leaves the style string intact; React refuses it. Convert to an object (note CSS props camelCase too).
Error in console:
Warning: Style prop value must be an object /
Error: The `style` prop expects a mapping from style
properties to values, not a string. For example,
style={{marginRight: spacing + 'em'}} when using JSX.
Converter output (unchanged string):
<path style="fill-rule:evenodd;fill:#1f2937" d="…"/>
Fix by hand:
<path style={{ fillRule: 'evenodd', fill: '#1f2937' }} d="…"/>Filter-primitive attribute warning
Drop-shadow/duotone icons use filter primitives the rename list doesn't cover. React warns; the filter usually still renders. camelCase the named attribute.
Console: Warning: Invalid DOM property `flood-color`. Did you mean `floodColor`? Converter output: <feFlood flood-color="#000" flood-opacity="0.3"/> Fix: <feFlood floodColor="#000" floodOpacity="0.3"/> // (color-interpolation-filters → colorInterpolationFilters, etc.)
Duplicate id collision on a repeated icon
Correct alone, broken twice — the textbook inline-SVG id bug. The converter keeps ids verbatim, so namespace them per component.
Rendered once → fine. Rendered twice → 2nd icon's clip is wrong. Converted (ids shared across instances): <clipPath id="clip0">…</clipPath> <g clipPath="url(#clip0)">…</g> Fix (prefix per component + rewrite refs): <clipPath id="BadgeIcon-clip0">…</clipPath> <g clipPath="url(#BadgeIcon-clip0)">…</g>
Invalid component name caught by tsc
PascalCasing a filename that starts with a digit produces a non-identifier. The file downloads, but the build fails. Set a valid name.
File: 2fa-shield.svg, name field blank → export const 2faShield = (…) => (…) // tsc: invalid identifier Process error (build): TS1003: Identifier expected. Fix: set Component name = TwoFactorShield → export const TwoFactorShield = (…) => (…) // valid
'Fine in HTML, wrong in React' — isolate the layer
Before blaming the converter, drop the raw SVG into a plain HTML file. If it's wrong there too, the source is broken; fix it first. If it's fine in HTML but wrong in React, it's a JSX issue from the list above.
Step 1: paste raw <svg>…</svg> into test.html, open in a browser.
- Wrong in HTML too? → source is broken (viewBox, ids, paths).
Fix with svg-viewbox-fixer / re-export, THEN convert.
- Correct in HTML? → it's a JSX-layer issue:
check style strings, kebab-case filter attrs,
duplicate ids.Edge cases and what actually happens
Inline style string makes React throw
Render errorThe converter does not parse style="…" into an object for svg-to-jsx output — the string passes through and React throws The 'style' prop expects a mapping … not a string. Convert each inline style to a camelCased object (style={{ fillRule: 'evenodd' }}), or remove inline styles in the SVG source before converting. This is the number-one conversion error.
Filter primitives left kebab-case
Dev warningflood-color, flood-opacity, lighting-color, color-interpolation-filters are not on the 28-attribute rename list, so they stay hyphenated and React warns ('Invalid DOM property … Did you mean floodColor?'). The filter usually still renders. camelCase the named attributes by hand if you keep the <filter>.
Duplicate ids across repeated instances
Visual bugThe converter keeps clipPath/mask/gradient ids verbatim. Render the same component twice and both reference the first instance's defs, so the second renders without its clip or with a flat gradient. Namespace ids per component (prefix + rewrite url(#…)/href="#…"), or use a <symbol> sprite for heavily repeated icons.
Component name isn't a valid identifier
Build errorNames that PascalCase to a leading digit (2faIcon) or contain stray symbols produce export const 2faIcon, which won't compile (TS1003: Identifier expected). The file still downloads. Set a clean PascalCase name in the Component name field — TwoFactorIcon — before processing.
Root xmlns warning
Dev warningOnly xmlns:xlink is deleted; the primary xmlns="http://www.w3.org/2000/svg" stays on the root. React may log a minor warning in some versions but renders correctly. It's harmless — delete the xmlns attribute manually if you want a silent console.
Pasted markup rejected as invalid
InvalidThe paste path requires a parseable <svg> root (no <parsererror>). A bare <path>/<g> fragment, HTML-wrapped SVG, or truncated markup is rejected with Invalid SVG — could not parse the pasted content as valid SVG XML. Wrap the fragment in a real <svg viewBox=…> and re-paste.
Icon won't theme with currentColor
Pre-processThe converter preserves colours; it does not introduce currentColor. An icon full of fill="#1F2937" ignores the parent's text colour after conversion. Run svg-to-tailwind (current mode) or svg-hex-swapper first to swap fixed paints to currentColor, then convert — now a text-… class themes it.
Comments and licence headers disappear
By designXML comments are stripped during conversion. If your SVG carried a licence/attribution comment, it won't be in the component. Re-add it as a JS comment above the component after copying if you must retain it. This is intentional cleanup, not a bug.
Self-closing vs paired tags after conversion
SupportedWell-formed SVG (self-closed <path … />, properly paired <g>…</g>) converts to valid JSX as-is — JSX shares XML's self-closing rules. If the SVG had unclosed tags it wouldn't have parsed; fix malformed markup at the source. No manual fix is needed for correctly-formed input.
Animation tags survive but you expected them stripped
PreservedSMIL (<animate>, <animateTransform>) and any nested elements pass through — the converter only renames attributes and wires props. If you didn't want the animation, remove those elements from the source; the converter won't strip them for you. React doesn't interfere with SMIL at runtime.
Frequently asked questions
Why does React throw 'style prop expects a mapping, not a string'?
Because the converter leaves inline style="…" strings exactly as they are — it does not convert them to React style objects. React's style prop only accepts an object, so any element with an inline style crashes. Fix it by converting each to a camelCased object: style="fill-rule:evenodd;fill:#000" → style={{ fillRule: 'evenodd', fill: '#000' }}. Better, strip inline styles from the SVG source (use presentation attributes) before converting.
React warns about an attribute like flood-color — why wasn't it converted?
The converter renames a fixed list of 28 attributes — the ones React rejects or warns on for typical icons (class, stroke-*, fill-*, stop-*, clip-*, font/text, markers, xlink:href). Filter-primitive attributes like flood-color, flood-opacity, lighting-color, and color-interpolation-filters aren't on that list, so they pass through kebab-case and React warns. camelCase them by hand if you're keeping the <filter>; the filter usually still renders despite the warning.
My icon renders correctly once but breaks when I use it twice. Why?
Id collision. SVGs that define internal clipPath, mask, or gradient ids reuse the same id on every instance, and the converter keeps ids verbatim. The second render references the first instance's defs, so it loses its clip or shows a flat gradient. Namespace the ids per component — prefix them and rewrite the matching url(#…)/href="#…" references — or use a single <symbol> sprite (svg-sprite-builder) for icons rendered many times.
Why won't my generated component compile?
Most often the component name isn't a valid JS identifier. PascalCasing 2fa-icon.svg gives 2faIcon, and export const 2faIcon fails with TS1003: Identifier expected. Set a valid PascalCase name in the Component name field (e.g. TwoFactorIcon). If the name is fine, check for an unconverted inline style string, which throws at runtime rather than compile time.
Should I remove the xmlns attribute from the converted component?
It's optional. The converter removes xmlns:xlink but keeps the primary xmlns="http://www.w3.org/2000/svg" on the root. React renders the icon correctly with it; some React versions log a benign warning. Delete the xmlns attribute if you want a silent console or the minimal element — it doesn't affect rendering either way.
It renders fine in plain HTML but wrong in React — what's different?
JSX is stricter than HTML. The usual culprits are: an inline style string (HTML accepts it, React throws), a hyphenated attribute React doesn't recognise (filter primitives), or duplicate ids that only matter when React mounts multiple instances. SVG is also case-sensitive while HTML isn't, so a mis-cased element/attribute can render in a browser's lenient HTML parser but not as JSX. Work through the symptom table to pin the exact cause.
Does the converter handle xlink:href for <use> and gradients?
Yes — xlink:href is renamed to href, and the now-redundant xmlns:xlink declaration is removed. React 18+ uses the plain href form for <use>, gradient href, and <textPath>, so this is exactly what you want. If your SVG already used the modern href (no xlink:), it passes through unchanged.
Can I animate the converted SVG in React?
Yes. CSS animations and the Web Animations API work on inline SVG, and the converter wires {...props}/className so you can target it. SMIL tags (<animate>, <animateTransform>) pass through and keep working — React doesn't interfere. To drive a path/fill from React state (e.g. animated strokeDashoffset), bind the attribute to state in the component; because it's inline, React owns those nodes.
Why are my SVG comments gone after conversion?
The converter strips XML comments as part of cleanup, so exporter banners and licence comments don't end up in the component body. If you need to keep a licence/attribution notice, re-add it as a JS comment above the component after copying. This is intentional, not a defect.
The icon ignores my theme colour after conversion. How do I fix it?
The converter preserves whatever colours the SVG had — it does not introduce currentColor. If the icon uses hard-coded hex (fill="#1F2937"), it won't follow your parent's text colour. Convert the fixed paints to currentColor first with svg-to-tailwind (current mode) or svg-hex-swapper, then run svg-to-jsx. After that a single text-… class on a parent themes the icon.
Does dangerouslySetInnerHTML ever make sense for SVG?
Rarely, and not as a substitute for conversion. dangerouslySetInnerHTML skips React's reconciliation, so you lose prop forwarding, theming hooks, and safe interpolation — and you take on XSS risk if the SVG isn't trusted. Use the converter's clean JSX so React owns the nodes. Reserve dangerouslySetInnerHTML for cases where the SVG string is fully trusted and genuinely dynamic at runtime.
Is there a size or attribute limit I might be hitting?
The conversion has no attribute-count limit, but the input file is bounded by your tier — 5 MB on free, 50 MB on Pro — and a larger file is rejected before processing with an 'exceeds the tier per-job limit' message. Icons are kilobytes, so this only affects huge illustrative SVGs; minify with svg-pro-minifier first if you're near the limit.
Privacy first
Every JAD SVG tool runs entirely in your browser using the DOM API and Canvas. Your SVG files never leave your device — verified by zero outbound network requests during processing.