# Excel Change Log > Web app that compares two spreadsheet files (.xlsx or .csv) and shows a visual, Excel-faithful diff — cell values, formulas, styles, embedded images, charts, and structural changes. Try the public demo free (no signup); paid plans are Weekly and Yearly (full unlimited product on both). Team is contact-only until shared workspace ships. No Free forever account plan. Excel Change Log is a browser-based SaaS for spreadsheet professionals (finance, ops, audit). Upload Version A and Version B, review changes in a unified or side-by-side grid, export or share read-only links. No desktop plugin required. Key facts: Demo (logged-out only) — 1 MB uploads. Weekly — $0.99 first week for first-time subscribers, then $5.99/week; full unlimited product, AI analysis, share links with optional password; cancel anytime. Yearly (Best value) — $249/year (~20% off vs weekly); same full unlimited product. Team — contact sales ($15/seat/mo, min 3 seats). No Free forever account plan. Machine-readable product JSON: https://excelchangelog.com/.well-known/product.json Full text bundle: https://excelchangelog.com/llms-full.txt ## Product - [Home](https://excelchangelog.com/): Compare Excel files with a visual diff. Primary landing page. - [Free demo](https://excelchangelog.com/demo): Try comparison online without signup (1 MB demo limit). - [Pricing](https://excelchangelog.com/pricing): Weekly and Yearly plans (+ demo CTA). Team contact separately. - [Excel diff comparison](https://excelchangelog.com/excel-diff-comparison): Brand-free comparison of text/CSV, desktop add-in, and visual web diff approaches. - [Features](https://excelchangelog.com/features): Visual diff, charts, version tracking, AI summaries, and share links. - [Use cases](https://excelchangelog.com/use-cases): Finance models and spreadsheet audit workflows. ## Features - [Visual Excel Diff](https://excelchangelog.com/features/visual-diff): Upload two Excel files. See every change highlighted — numbers, formulas, colors, charts. No scrolling. No install. - [Image & Chart Diff](https://excelchangelog.com/features/image-and-chart-diff): Compare embedded images and charts in Excel workbooks. Most diff tools stop at cell text — Excel Change Log shows visual changes in place. - [Excel Version Tracking](https://excelchangelog.com/features/version-tracking): Stop hunting through email for the right Excel version. Upload v1, v2, v3 to one project and compare any two with a click. - [AI Spreadsheet Analysis](https://excelchangelog.com/features/ai-analysis): Get a plain-English summary of what changed between two Excel files. AI analysis on Weekly and Yearly turns diff data into reviewer-ready explanations. - [Shareable Excel Comparisons](https://excelchangelog.com/features/share-links): Share read-only comparison links with teammates and auditors. Password protection and expiry included on paid plans. ## Use cases - [Compare Budget & Financial Models](https://excelchangelog.com/use-cases/finance): Before you sign off on a budget or model — see exactly what changed. Formulas, new rows, chart updates. No re-reading every tab. - [Spreadsheet Audit & Compliance](https://excelchangelog.com/use-cases/audit-and-compliance): Document spreadsheet changes for audit trails and compliance reviews. Share read-only diff links with reviewers. ## Guides - [How to Compare Two Excel Files](https://excelchangelog.com/blog/how-to-compare-two-excel-files): Compare two Excel files in 5 minutes. Upload, review highlighted changes, share a link. Free demo — no install. - [Excel Version Control Best Practices](https://excelchangelog.com/blog/excel-version-control-best-practices): Practical tips for tracking Excel file versions, naming conventions, and review workflows that prevent silent spreadsheet errors. - [What Changed in My Spreadsheet?](https://excelchangelog.com/blog/what-changed-in-my-spreadsheet): Find out what changed between two spreadsheet versions — cells, formulas, charts, images, and hidden structural edits. - [How to Choose an Excel Diff Tool](https://excelchangelog.com/blog/choosing-an-excel-diff-tool): Don't buy the wrong Excel diff tool. Checklist for formulas, charts, sharing, and file-size limits — before you commit. - [Compare Excel Files on Mac](https://excelchangelog.com/blog/compare-excel-files-on-mac): Microsoft Spreadsheet Compare does not run on Mac. Compare two .xlsx files in the browser — formulas, formats, and charts — with no Windows PC and no Excel add-in. - [Spreadsheet Compare (Excel Inquire): When to Use It](https://excelchangelog.com/blog/spreadsheet-compare): Microsoft Spreadsheet Compare (Inquire) is free on Windows with the right Office SKU and diffs VBA. It is not on Mac, not in Personal/Family/Business 365, and it does not share a browser link. ## API (mobile & integrations) - [Product JSON](https://excelchangelog.com/.well-known/product.json): Machine-readable pricing, limits, URLs, and API base for AI agents. - Mobile REST API base: `https://excelchangelog.com/api/v1` (Bearer token auth; register via POST /api/v1/auth/register). - Public demo requires no API key. Comparison engine runs server-side; clients are thin. ## Locales - [English](https://excelchangelog.com/) — [llms.txt](https://excelchangelog.com/llms.txt), [llms-full.txt](https://excelchangelog.com/llms-full.txt) - [日本語](https://excelchangelog.com/ja) — [llms.txt](https://excelchangelog.com/ja/llms.txt), [llms-full.txt](https://excelchangelog.com/ja/llms-full.txt) - [简体中文](https://excelchangelog.com/zh-hans) — [llms.txt](https://excelchangelog.com/zh-hans/llms.txt), [llms-full.txt](https://excelchangelog.com/zh-hans/llms-full.txt) - [繁體中文](https://excelchangelog.com/zh-hant) — [llms.txt](https://excelchangelog.com/zh-hant/llms.txt), [llms-full.txt](https://excelchangelog.com/zh-hant/llms-full.txt) ## Legal - [Privacy policy](https://excelchangelog.com/privacy): Data handling, file retention, cookies, third parties. - [Terms of service](https://excelchangelog.com/terms): Acceptable use and subscriptions. ## Optional - [Blog index](https://excelchangelog.com/blog): Excel comparison guides and change-tracking tips. - [Sitemap](https://excelchangelog.com/sitemap.xml): All indexable marketing URLs.