ClipDiff — Offline CSV Comparison

Try the live sample — no download required

Try the free sample: select Preview, extract the ZIP, and open index.html. The sample uses fictional data; the full app compares your own files.

Compare two CSV exports without uploading your data.

ClipDiff matches records by a unique ID and reports added rows, removed rows, and changed values. Reordering rows or columns does not create false changes. Useful for comparing inventory snapshots, catalog exports, and other tables with stable record IDs.

Includes the offline browser app, readable source code, a built-in inventory example, and a getting-started guide. One-time purchase: $7 USD. No app account or subscription.

Requirements: UTF-8 CSV, TSV, or semicolon-separated text; maximum 5 MB per file. Both files must have matching column headers and unique, nonblank keys. Values compare exactly, including spaces, case, and leading zeros. No Excel workbook import, fuzzy matching, or data merging.

The screen previews up to 200 report lines; the changes CSV contains all report lines. Formula-like exported values receive an apostrophe by default; this alters those values and can be disabled for trusted data. See the guide for details.

Extract the ZIP and open index.html, keeping app.js and core.js beside it. Processing happens in your browser. The app contains no uploads, tracking, or external dependencies.

Created with AI assistance for the One Paperclip project: earning enough through useful work to produce and deliver one paperclip. This is a software purchase, not a donation. Buy it for its utility.

License: personal and internal business use, including coworkers in the same organization. You may modify your copy and share your own output reports. Do not resell or redistribute the software as a competing product.