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Diffchecker for PC: How to Download & Install on Windows
Need to spot exactly what changed between two documents, two code files or two images? This diffchecker download for pc guide shows you how to get the official desktop app on Windows 10 and Windows 11. Diffchecker is a comparison tool that highlights differences down to the character level, and the desktop version does all of it 100 percent offline, so your files never leave your computer.
Diffchecker started as a free web tool for comparing text, and it has grown into a full desktop application for Windows, macOS and Linux. The desktop app compares text and code, PDF and Word documents, images, and even whole folders, with features built for developers, writers, lawyers and anyone who reviews changes. The free web comparer needs no sign-up at all, while the desktop app comes with the paid Pro plan.
1. What Is Diffchecker?
Diffchecker is a file and text comparison tool that takes two versions of something and shows you exactly what is different. Changed words are highlighted, added and removed lines are marked, and image differences are shown pixel by pixel, so you can review a change in seconds instead of reading two documents line by line.
The desktop app is the key part of this guide. Unlike the web version, Diffchecker Desktop works fully offline, which matters when the files you compare are private, confidential or simply too large to upload. It handles text and code with syntax highlighting for more than 20 languages, documents such as PDF, Word, PowerPoint and Excel, scanned documents with OCR, images with EXIF comparison, and whole folders with batch comparison.
2. Key Features
- 100 percent offline comparison: the desktop app compares files on your own computer, so nothing is ever uploaded or shared.
- Text and code comparison: differences shown down to the character level, with syntax highlighting for more than 20 programming languages.
- Document comparison: compare PDF, Word, PowerPoint and Excel files, with OCR for scanned documents.
- Pixel-by-pixel image comparison: see exactly which pixels changed between two images, with a change log and EXIF data comparison.
- Folder and batch comparison: compare two whole folders at once and work through many files in one session.
- Legal redlining and export: export results as PDF, Word or tracked changes, and use AI summaries that explain the differences in plain words.
Tip: use the desktop app for anything private or confidential, and keep the free web comparer for quick, non-sensitive checks. The two share the same comparison engine, so the results will match.
3. System Requirements
- Operating system: Windows 10 or Windows 11 (the desktop app is also available for macOS and Linux)
- Processor: any modern processor, since comparison work is lightweight
- RAM: 4 GB minimum, with 8 GB recommended when comparing large documents or folders
- Storage: a small amount of free disk space for the app itself, plus room for the files you compare
- Internet: needed only to download the app and activate your plan, because comparisons run fully offline
- Account: a Diffchecker account is needed for the paid Pro plan that includes the desktop app
4. Diffchecker Download for PC: Official Method
Always get the app from the official source so you receive the genuine installer. Follow these steps:
- Open your browser and go to the Download Diffchecker Desktop from the official website.
- On the official desktop page, choose the Windows download for Diffchecker Desktop.
- Save the installer to your computer, then run it and follow the setup wizard.
- Sign in with your Diffchecker account to unlock the desktop app with your Pro plan.
- Open Diffchecker Desktop and load your first two files to compare.
Important: the desktop app is part of the paid Pro plan, while the web comparer is free. Avoid third-party download sites that repackage installers or bundle extra software. The official website above is the only source you need.
5. Diffchecker Download for PC: Step-by-Step Installation
- Download the Windows installer from the official desktop page.
- Double-click the installer and follow the setup wizard to install Diffchecker Desktop.
- Launch the app from the Start menu once the installation finishes.
- Sign in with your Diffchecker account, or create one if you do not have one yet.
- Check that your Pro plan is active, then the app is ready to compare files offline.
Warning: the desktop app needs an active Pro plan to use. If you only need a quick one-off comparison, the free web comparer on the official website works without installing anything.
6. How to Compare Your First Two Files in Diffchecker
Start with two versions of a file you already have, such as an old and a new draft of a document, so you can see how clearly the differences are highlighted.
- Open Diffchecker Desktop and choose the type of comparison, such as text, document or image.
- Load the older file on the left and the newer file on the right.
- Click the compare button and wait a moment for the results to appear.
- Look through the highlighted changes, added lines and removed lines in the results pane.
- Export the result as a PDF or Word file if you need to share the comparison with someone else.
7. Is Diffchecker Free? The Price Explained
The web version of Diffchecker is free, but the desktop app is part of the paid Pro plan. You can compare text on the website without paying or signing up, and you pay only when you need the desktop app and the full feature set.
- Free web tool: compare text and files in the browser at no cost, with no sign-up needed.
- Pro + Desktop: $15 per user per month, with the full Pro features and the desktop app included.
- Legal: $20 per user per month, with legal redlining features added.
- Enterprise: $40 per user per month on annual billing, for teams with advanced needs.
- Devices: one Pro licence can be used on up to 3 devices at the same time.
Prices are listed on the official Diffchecker pricing page and can change, so check the live page before you buy.
8. Diffchecker Download for PC: Frequently Asked Questions
Q1. Is there a real Diffchecker desktop app for Windows?
Yes. Diffchecker Desktop is an official app for Windows, macOS and Linux. It compares text, images and files fully offline, so your files never leave your computer.
Q2. Is Diffchecker free?
The web comparer is free with no sign-up. The desktop app is included in the Pro plan at $15 per user per month.
Q3. What file types can Diffchecker compare?
It compares text and code, PDF, Word, PowerPoint and Excel documents, images pixel by pixel, and whole folders. Scanned documents are supported with OCR.
Q4. Do my files get uploaded to the internet?
Not with the desktop app. Diffchecker Desktop works 100 percent offline, so your files stay on your own computer.
Q5. What are the system requirements?
You need Windows 10 or 11 and a Diffchecker account with a Pro plan for the desktop app. Diffchecker does not publish detailed hardware specs, because the app is lightweight.
Q6. Can I compare images with Diffchecker?
Yes. The image comparison shows differences pixel by pixel, includes a change log, and can compare EXIF data between two images.
Q7. Can I export the comparison results?
Yes. Results can be exported as PDF or Word files, or as tracked changes, and Pro users can also get AI summaries of the differences.
Q8. How much does Diffchecker Desktop cost?
Diffchecker Desktop is included in the Pro plan at $15 per user per month. One licence works on up to 3 devices. Check the official pricing page for the current price.
9. Conclusion
Diffchecker is a straightforward way to see exactly what changed between two files, and the desktop app adds the privacy of fully offline comparison on Windows. Try the free web comparer first, and if you compare files often or work with private documents, get the desktop app only from the official website linked in this guide.
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