Compare Files Online Free
Compare two files online and see exactly what changed. FileDiffs highlights additions, deletions and edits across PDF, Word, Excel, PowerPoint, CSV, TSV, JSON, Markdown and text files. Your file contents are processed in your browser, so they stay on your device. No software installation is required.
View File Comparison Guide
Explore All File Comparison Tools
Compare PDF files and review changed text, clauses, paragraphs and document content between two versions.
Compare Word documents to identify added, deleted and rewritten text, formatting changes and document revisions.
Compare PowerPoint presentations and find changes across slide text, headings, bullet points and presentation content.
Compare Excel files and inspect changed cells, values, formulas, rows, columns and worksheets.
Compare CSV files to find changed values, added or missing records, row differences and column updates.
Compare TSV files and review changes across rows, fields, values and tab-separated data.
Compare Markdown files and find edits to headings, paragraphs, lists, links, tables and written content.
Compare two text files and quickly find added, removed and modified words, lines and punctuation.
Compare JSON files and identify changes in keys, values, arrays, objects and nested data structures.
How to Compare Two Files Online
Choose the original file and the modified version from your device. You can also drag and drop both files into the comparison area.
Start the comparison. FileDiffs reads both versions and matches their content to identify additions, deletions and modifications.
Inspect highlighted changes and move through the comparison to understand exactly what was changed between the two files.
Compare Documents, Spreadsheets and Data Files
Review contracts, agreements, proposals and other documents. Compare PDF or Word files to find rewritten wording, added clauses and removed content before approval.
Compare Excel, CSV and TSV files when reviewing reports, budgets, exports or datasets. Find changed values, rows, columns and other data differences.
Compare PowerPoint files to review changes across slide text, headings, bullet points and presentation content before sharing or presenting.
Compare Word, Markdown and text drafts between versions. Quickly identify additions, deletions and rewritten passages during writing, editing and review.
Compare JSON files when checking configuration data, API responses or structured datasets. Find changes across keys, values, arrays and nested objects.
Review revised reports, research documents and supporting data before publication or submission. Find important changes without manually checking both versions.
Why Choose FileDiffs
Compare files quickly in your browser using your device’s resources, without upload or server-processing delays.
Your files stay on your device during comparison and aren’t sent to FileDiffs servers or third parties.
Detect additions, deletions and changes in words, numbers and values, including small differences that are easy to miss.
Choose the Best File Comparison View
Compare two files side by side with clear highlights for additions and deletions, while unchanged content stays neutral and easy to review in context.
Review both file versions in one continuous view, with additions and deletions shown inline so changes are easier to follow, scan and verify.
Switch between the original and modified files with one click, making it easy to review either version without comparison highlights or distractions.
Review document changes in a visual layered view that keeps layout and structure in context, making edits easier to understand clearly at a glance.
Browse additions, deletions and modifications in one list, then jump directly to each change to review long documents quickly and efficiently.
Export a professional comparison report with side-by-side and unified views plus a complete change log for audits, approvals, compliance and sharing.
See Exactly How FileDiffs Displays File Comparisons
Explore multiple comparison views to review changes clearly, including side-by-side, unified, visual and original/modified views.
.webp&w=3840&q=75)
How FileDiffs Processes Your Files Securely
Find added, removed and changed words, numbers and values across supported file formats, with differences shown clearly for faster and easier review.
Process file contents directly in your browser using native Web APIs, so comparisons happen on your device without uploading files to external servers.
Comparison speed depends on file size, complexity, browser performance and the processing resources available on your device during each review.
Your file contents stay on your device during comparison and aren't sent to FileDiffs servers or third parties for any remote file processing or storage.
Keep control of your files throughout comparison. Local processing reduces unnecessary transfers and limits exposure to remote systems or storage.
Compare PDF, DOCX, PPTX, XLSX, CSV, TSV, JSON, Markdown and plain text files in one place with clear results across all supported file formats.
Frequently Asked Questions About FileDiffs
Select the original and modified files, then start the comparison. FileDiffs highlights additions, deletions and changes for easy review.
Yes. FileDiffs lets you compare supported file formats online for free and review differences directly in your browser.
FileDiffs supports PDF, Word (DOCX), PowerPoint (PPTX), Excel (XLSX), CSV, TSV, JSON, Markdown and plain text files.
No. FileDiffs processes your file contents in your browser, so they stay on your device and aren't uploaded to FileDiffs servers.
Yes. FileDiffs can identify small changes in words, numbers and values that are easy to miss manually.
FileDiffs Reviews & User Feedback
"Legitimate local-only diff. I tracked network calls in dev tools and verified no files are uploaded. Perfect for processing sensitive client data under HIPAA securely. Highly recommend."
"I compare code configs, env files, and text logs daily. FileDiffs is incredibly convenient. The side-by-side highlighting is accurate and handles large files without crashing. Superb."
"Does a great job comparing document drafts on my iPad. The interface is clean, fast, and the diff utility itself works flawlessly. Very handy for mobile work."