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HTML/SVG to JSX/TSX

Convert markup attributes and component structure for React codebases.

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DevSexy code customs · every attribute declared

Markup crosses a prop boundary.

HTML and SVG can both resemble JSX. Their attributes, style values, namespaces, events, and wrapper contracts still need different inspections before React owns them.

HTML lane

<label class="field" for="email">
  • DOM property names
  • void elements
  • form associations

SVG lane

<path stroke-width="2" fill-rule="evenodd">
  • camel-cased paint props
  • ID and URL references
  • ARIA stays hyphenated

Transformation receipt

Every rewrite should be inspectable.

classclassNameRenamed

React DOM property

forhtmlForRenamed

Label association preserved

stroke-widthstrokeWidthRenamed

SVG prop casing

aria-labelaria-labelPreserved

ARIA spelling is unchanged

data-test-iddata-test-idPreserved

Custom data contract

onclick="save()"data-devsexy-review-onclickQuarantined

Behavior requires a real function

Inline style object lab

A CSS declaration string becomes JavaScript data.

HTML attribute
style="font-size: 14px; --brand: #bfd456; line-height: 1.4"
React style prop
style={{ fontSize: "14px", "--brand": "#bfd456", lineHeight: "1.4" }}
font-sizefontSizecamelCase key
--brand"--brand"custom property stays quoted
14px"14px"unit remains explicit
1.4"1.4"converter does not guess numeric intent

Event-handler quarantine

Behavior-bearing strings do not become trusted functions.

HTML event attributes execute in a global-string scope. React expects a function reference with application state and imports. The Worker preserves the evidence under a data-devsexy-review-* name and never runs it.

Incoming behavior string
<button onclick="checkout(cart)">Buy</button>
Quarantined evidence
<button data-devsexy-review-onclick="checkout(cart)">Buy</button>

Replace after review: onClick={() => checkout(cart)}

Wrapper contract

Choose output ownership, not just an extension.

Fragment

<>…</>

Groups one or many roots without adding a DOM node.

JSX component

export function Badge()

JavaScript syntax; props remain your design decision.

TSX component

(): React.JSX.Element

Adds a return contract, not invented prop types.

Component name

Uppercase identifier

React treats lowercase names as built-in elements.

Post-conversion compiler gate

Converted is the beginning of integration.

01

Parse JSX / TSX

The output must compile under the target toolchain.

02

Read the receipt

Review quarantined handlers and unknown attributes.

03

Render the asset

Check labels, IDs, gradients, masks, and form associations.

04

Add behavior and types

Connect real functions, state, props, and domain types.

05

Lint and test

React warnings and interaction tests own the final verdict.

Run a reproducible example

Convert HTML attribute names and inspect how inline event handlers are quarantined for review.

Using an example replaces the current input, reference input, operation, and options. Public demonstration data only.

Convert class and for attributes

Generate a JSX snippet from a label element.

Input

<label class="field" for="email">Email</label>

class becomes className and for becomes htmlFor, with the label text preserved.

className="field"
htmlFor="email"

Quarantine an inline event handler

Generate a DemoButton JSX component from a public onclick fixture.

Input

<button onclick="alert(1)">Save</button>

The handler becomes a data-devsexy-review attribute and a review note; it is not converted into executable React logic.

export function DemoButton()
data-devsexy-review-onclick
Review required

Continue with a related task

HTML Beautifier & Minifier

Reshape HTML with a parser-aware formatter and inspect malformed structure.

TypeScript & TSX Formatter

Format TypeScript and TSX using the same parser family as modern editor workflows.

SVG Optimizer

Reduce SVG markup with transparent optimization decisions.

Repeat the task in DevSexy for Mac

Use the native app for repeated offline work and direct Option shortcuts.

Direct answer

What is HTML/SVG to JSX/TSX?

Convert HTML or SVG to React-ready JSX or TSX online, with explicit attribute mappings, style-object conversion, and event-handler review boundaries.

What can it do?

  • Snippet
  • JSX
  • TSX

How to use HTML/SVG to JSX/TSX

  1. 01

    Prepare the input

    Paste HTML or SVG markup as source, without mounting it.

  2. 02

    Choose the operation

    Choose a snippet, JSX component, or TSX component and set a valid component name.

  3. 03

    Review the evidence

    Replace quarantined handlers intentionally and check styles, references, and accessibility in React.

Frequently asked questions

Are onclick strings converted into React handlers?
No. They are quarantined as review attributes and identified in a comment. You must write and review the actual React event handler yourself.
Does conversion create a complete React application?
No. It emits a fragment or component source. Imports, state, data flow, event logic, and application integration remain your responsibility.
Can every HTML or SVG feature be carried across?
No conversion can assume identical semantics for every attribute, embedded script, style, or reference. Inspect the generated source and render it in the target project.