Build a Diff Viewer with Next.js

A text diff comparison tool with side-by-side and unified views. Using Next.js's Next.js 14+ with App Router, SSR, and shadcn/ui, LoomCode AI generates a production-ready diff viewer with clean code structure, proper state management, and a polished user interface — all from a single text description in seconds. No prior coding experience required.

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How to Build a Diff Viewer with Next.js

Select Next.js

Open LoomCode AI and choose the Next.js template from the template picker.

Describe your app

Type a description of your diff viewer and click submit.

Preview & deploy

Watch the AI generate code and preview your working app live. Deploy with one click.

Why Build a Diff Viewer with Next.js

Developers building a diff viewer will appreciate Next.js's TypeScript support and component architecture. The tool itself can be built with the same patterns its users work with daily.

What the AI Generates for This Diff Viewer

Responsive diff viewer layout that adapts to desktop, tablet, and mobile
Component-based architecture with reusable UI elements
Client-side state management for instant user interactions
Styled with Tailwind CSS utility classes for a polished look
Code block rendering with syntax highlighting and copy buttons
Developer-friendly interface with monospace fonts and technical formatting for diff viewer

Example Prompt

Copy this prompt and paste it into LoomCode AI:

Build a diff viewer with two text input areas, side-by-side and unified diff views, line-by-line highlighting of additions/deletions, and line numbers

Try this prompt

What You Get

LoomCode AI generates a diff viewer with code rendering, syntax highlighting, and developer-oriented UI. The interface uses monospace fonts, proper technical formatting, and interactive controls. The output is properly structured Next.js code using Next.js 14, TypeScript, Tailwind CSS, shadcn/ui with typed components, responsive styling, and clean state management. The app runs immediately in a live sandbox — interact with it, test every feature, then iterate with follow-up prompts or deploy to a shareable URL.

Tips for Better Results

Specify the technical features you need: "syntax highlighting for JavaScript, line numbers, copy button, dark theme code blocks"
Include your API or data format if relevant — "accepts JSON input with fields X, Y, Z" helps the AI generate accurate interfaces
Ask for "developer-friendly layout with monospace fonts and clear documentation sections" for a professional look
Consider asking for responsive design explicitly if mobile support matters for your diff viewer

Tech Stack

Next.js 14(Stack)

TypeScript(Stack)

Tailwind CSS(Stack)

shadcn/ui(Stack)

Tailwind CSS(Styling)

E2B sandbox(Environment)

FAQ

Can AI build a Diff Viewer with Next.js?

Yes. LoomCode AI generates a complete diff viewer with Next.js 14, TypeScript, Tailwind CSS, shadcn/ui from a text description. The AI understands code editing, syntax highlighting, API integration, and dev workflows and produces working code that runs immediately in a live sandbox. Next.js's component architecture handles code editing, syntax highlighting, API integration, and dev workflows with reusable UI pieces and efficient state management. You can iterate with follow-up prompts to refine features or deploy with one click.

How long does it take to build a Diff Viewer with AI?

A working diff viewer typically generates in 30-60 seconds. The initial version includes code editing, syntax highlighting, API integration, and dev workflows with a polished UI. From there, you can add features incrementally — each follow-up prompt takes another 15-30 seconds. Most users go from idea to a deployable diff viewer in under 10 minutes, compared to hours or days of manual development.

Can I customize the generated Diff Viewer?

Yes, in two ways. First, use natural language follow-up prompts: "add dark mode", "change the layout to tabs", or "add a search filter" — the AI modifies the existing code. Second, copy the full source code and edit it directly. The output is standard Next.js code using Next.js 14 and TypeScript that works in any React/Vue/Next.js project.

Which AI model works best for a Diff Viewer?

For a diff viewer, GPT-4o offers the best speed-to-quality balance for quick iterations. Claude 3.5 Sonnet produces more polished code for complex features. DeepSeek V3 is a cost-effective alternative for simpler versions. You can switch models anytime.

Is the generated diff viewer production-ready?

For prototypes and MVPs, the generated diff viewer is typically ready to use immediately. The code includes proper TypeScript types, component structure, and responsive design. For production deployment at scale, you may want to add automated tests, error boundaries, and monitoring.

Build a Diff Viewer with Other Frameworks

Diff Viewer with React

Diff Viewer with Vue.js

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