TSX Compare — Compare TSX Files Online Free
Compare TSX files — typed React components with props, types, and markup in one view. Built for design-system updates and branch reviews. Free, no account, components never uploaded.
How to Compare TSX Files Online
Running a TSX comparison in TSX Compare is a three-step job:
- Load the original .tsx file in the original pane.
- Then place the updated .tsx file into the second input.
- Run Compare and review additions in green, deletions in red.
Tip: check prop-interface highlights before markup ones — a widened or narrowed prop type breaks consumers faster than any layout change. Compatible with all modern browsers — Safari, Chrome, Firefox, or Edge — on macOS, Windows, Linux, or mobile, with no limit on comparisons. The side-by-side view is free and needs no login; Premium unlocks the line-by-line analytical view.
Understanding the TSX File Format
TSX files combine TypeScript and JSX — typed React components where props interfaces, generics, and hooks coexist with markup. This is the default for modern React codebases, and changes carry double weight: a type edit can break consumers at compile time while a render edit changes the UI. Comparing TSX versions means tracking both dimensions at once. Since a single .tsx file carries both the component's contract and its rendering, typed component comparison catches two kinds of regression at once — the prop change that breaks consumers and the JSX change that breaks layout.
Common Uses of TSX Files
The everyday scenarios it was built for:
- Design-system teams diff components across a version bump to verify the changelog.
- Developers audit prop-interface changes before a shared component ships.
- Reviewers compare a TSX rewrite against the JSX original during typing migrations.
- Teams check generic constraints after consumers report type errors.
- Frontend leads document component API changes between release tags.
- QA verifies a bug-fix branch changed only the targeted component logic.
Running the diff across a design-system version bump tells you in minutes which components actually changed beneath the changelog.
Differences Detected in TSX Files
The diff surfaces both type and UI changes: TSX prop type diff for modified interface members, typed component comparison across signatures and generics, TSX hook changes including typed state and effect dependencies, and interface change in component contracts — all rendered as a clear, syntax-aware React TS refactor diff.
Examples of Changes Found in TSX Files
Typical differences the typed-component diff flags:
- A props interface where 'variant: "primary" | "secondary"' gained a third union member "ghost".
- A component converted from React.FC<Props> to a plain typed function — signature changes highlighted in the side-by-side view.
- A useState<User | null>(null) changed to useState<User | undefined>(undefined), with the three affected guards flagged.
- A design-system Button whose v2 file differs from v1 in prop defaults and two accessibility attributes.
- A Button component where variant?: 'primary' | 'secondary' gained 'danger' — an additive change confirmed safe in seconds, no consumer breakage.
Why Use FileDiffs for TSX Comparison
Typed React breaks in two directions at once: a prop interface that shifts and a rendered tree that changes, and reviewing only one misses the other. FileDiffs audits both in a single view, comparing .tsx files in the browser with nothing stored. It's built for the design-system bumps and branch reviews where typed components actually drift, with examples like a variant union gaining a 'danger' option, confirmed safe and additive in seconds rather than guessed at.
Frequently Asked Questions About Compare TSX Files Online
Upload both .tsx files and the side-by-side diff highlights every changed type, prop, hook, and JSX element with word-level precision. Both the prop contract and the rendered markup are visible in one pass, which is the point of typed components.
TSX adds TypeScript's type layer, so its diffs include interface and annotation changes alongside markup and logic. The comparison engine handles both identically as syntax-aware text. Use TSX comparison when type changes matter — prop interface edits simply don't exist in plain JSX files.
Diff the component across versions; modified props interfaces, generics, and annotations appear as highlighted lines, giving you the type-contract changelog reviewers need. A prop that became required or non-nullable is a breaking change for every consumer of the component.
Compare the files containing both versions — added, removed, and retyped interface properties are flagged exactly, including optionality changes like name: string → name?: string. Generic constraints deserve a careful read; a tightened constraint can break consumers without changing runtime code.
Compare each component file between the two versions or branches. The highlighted diff separates real changes from noise, making upgrade and migration review systematic. Across a design-system bump, diff each changed component to verify the changelog matches the code reality.
Yes. Your typed React components are processed locally in the browser, so proprietary component code is never uploaded or stored. Everything stays on your machine from start to finish. The files exist only in your browser's memory during the comparison.