LineDiff Integrations: Google Docs, Export Formats & BYOK

The best tool is the one that fits your existing workflow, not the one that forces you to build a new one around it. LineDiff is designed from the ground up to connect seamlessly with the tools you already use — from Google Docs for collaborative drafting to PDF and Excel for formal deliverables.

This guide walks through every integration and export option available in LineDiff today, plus what is coming next.

**Google Docs Import**

Many teams draft and review documents in Google Docs. LineDiff supports direct import from Google Docs via the share-link workflow. Paste a Google Docs share URL into the LineDiff import dialog, and the content is fetched, normalized, and loaded into the comparison panel in seconds.

Normalization is a key step that most tools skip. Google Docs exports include a significant amount of structural noise: smart quotes, non-breaking spaces, invisible formatting characters, and encoding artifacts. LineDiff's import layer strips these out before diffing, so you see meaningful content differences — not formatting artifacts from the Google rendering engine.

For best results, make sure both Google Docs are shared with "Anyone with the link can view" access before importing. LineDiff does not store your Google credentials; the fetch is a one-time read operation.

**Export Formats**

Once your comparison is ready, LineDiff offers five export formats designed to serve different downstream audiences.

PDF export produces a fully rendered, print-ready comparison document. Changes are color-coded exactly as they appear on screen — green for additions, red for deletions, yellow for moves. PDF export is generated server-side using Puppeteer, which means the output is pixel-perfect regardless of your browser or operating system. This is the format to use when you need to share a comparison with someone who does not have a LineDiff account, or when you need a permanent record for a regulatory file or legal matter.

Excel export (XLSX) produces a structured spreadsheet with one row per changed line. Columns include: line number in Document A, line number in Document B, change type (addition / deletion / unchanged), and the text content. This format is ideal for analysis — you can filter, sort, and pivot the change data to generate summary statistics, and it integrates directly with existing Excel-based review workflows common in finance, audit, and compliance teams.

HTML export produces a self-contained, interactive diff page that can be embedded in intranets, wikis, or documentation systems. No LineDiff account is needed to view an HTML export — the comparison is rendered entirely in the file.

JSON export exposes the raw diff data as a structured object. Each changed segment is represented with its position, type, and text, making this the format to use for pipeline integration — feeding LineDiff's output into a downstream analysis tool, a database, or a custom reporting workflow.

Diff patch export produces a standard unified diff file compatible with Git and other version control systems. If you need to apply a LineDiff comparison as a patch, or store it alongside your codebase, this is the right format.

**Bring Your Own Key (BYOK)**

LineDiff's AI analysis features — domain-aware semantic summarization, clause classification, change prioritization — are powered by OpenAI's GPT-4o model. By default, LineDiff proxies these requests through its own server, and AI usage is counted against your plan's monthly credit allocation.

For teams with heavy AI usage, or those who prefer to manage their own OpenAI spend, LineDiff supports Bring Your Own Key (BYOK). Navigate to Settings, enter your OpenAI API key, and LineDiff will route all AI analysis requests directly from your browser to OpenAI — your key, your billing, unlimited usage. Your API key is stored locally in your browser and is never sent to LineDiff's servers.

BYOK is available on all paid plans and is particularly popular with development teams and power users who run dozens of AI comparisons per day.

**PWA Installation**

LineDiff is a Progressive Web App (PWA), which means you can install it on your desktop or mobile device and use it like a native application — with offline support, fast launch times, and no browser chrome. On Chrome or Edge, click the install icon in the address bar. On Safari for iOS or macOS, use Add to Home Screen.

The PWA caches the full LineDiff application locally, so basic comparison functionality works even without an internet connection. AI features and cloud sync require connectivity, but local comparisons are fully offline-capable.

**Coming Soon: REST API**

LineDiff's REST API is in development for enterprise customers. The API will expose comparison creation, result retrieval, and export generation as HTTP endpoints, enabling full automation of document comparison workflows — triggering comparisons from CI/CD pipelines, contract management systems, or custom internal tools. If you have a specific integration use case, reach out to the LineDiff team to join the early access program.