SheetCompareFeature-by-feature
| Feature | SheetCompare | Excel Power Query (Merge/Compare) |
|---|---|---|
| Starting price | Free | — |
| Runs in browser (no upload) | ||
| Free tier | ||
| Cross-format diff (CSV ↔ XLSX) | ||
| Cell-by-cell highlighting | ||
| Header-name column matching | ||
| No signup required | ||
| Desktop app |
SheetCompare
Browser-based spreadsheet diff that compares CSV, XLSX, XLS, and TSV files cell-by-cell without uploading them anywhere — files are parsed and diffed entirely in the browser.
Strengths
- client-side parsing — files never leave your browser
- cell-by-cell comparison with per-cell highlighting
- added, removed, and changed row detection
- header mismatch detection across files with different column orders
- junk-row detection for messy real-world exports
Limits
- no formula or VBA-level comparison — values only
- no desktop app
- free tier capped at 5,000 rows per file
Excel Power Query (Merge/Compare)
Built-in Excel data transformation tool that can perform merge operations to surface differences between two tables — not a comparison tool but widely used as a DIY approach.
Strengths
- load two datasets and merge/diff with M language
- anti-join to find records in one table but not the other
- available in all modern Excel versions
- handles large datasets efficiently
- no additional installation required
Limits
- not a comparison tool — requires manual setup and M formula knowledge
- steep learning curve for non-technical users
- no visual side-by-side diff output
- no color-coded highlighting of differences
- no PDF or comparison report export
- time-consuming for simple one-off comparisons
Choose SheetCompare when
Analysts, accountants, ops teams, and developers who need to spot differences between two spreadsheet exports without installing software or trusting an upload.
Choose Excel Power Query (Merge/Compare) when
Advanced Excel and data analysts comfortable with Power Query who prefer a DIY approach to structured data comparison.
Frequently asked questions
What's the main difference between SheetCompare and Excel Power Query (Merge/Compare)?▾
Browser-based spreadsheet diff that compares CSV, XLSX, XLS, and TSV files cell-by-cell without uploading them anywhere — files are parsed and diffed entirely in the browser. Built-in Excel data transformation tool that can perform merge operations to surface differences between two tables — not a comparison tool but widely used as a DIY approach. The practical difference: SheetCompare keeps your data in the browser tab; Excel Power Query (Merge/Compare) also runs locally but is built for advanced excel and data analysts comfortable with power query who prefer a diy approach to structured data comparison.
Is SheetCompare cheaper than Excel Power Query (Merge/Compare)?▾
SheetCompare starts free (5,000 rows per file, no signup). Pro is $12/month. Excel Power Query (Merge/Compare) is free for the base tier. For most spreadsheet diff workflows the price gap isn't the deciding factor — the privacy model and the cross-format support usually are.
Can Excel Power Query (Merge/Compare) compare CSV against XLSX?▾
Excel Power Query (Merge/Compare) is primarily focused on load two datasets and merge/diff with M language, so cross-format diffs typically require converting one file first. SheetCompare handles cross-format natively — the parser layer normalizes both inputs before the diff runs.
When should I pick Excel Power Query (Merge/Compare) over SheetCompare?▾
Excel Power Query (Merge/Compare) is the right choice if your workflow needs: load two datasets and merge/diff with M language, anti-join to find records in one table but not the other, available in all modern Excel versions. Those are real strengths and we don't try to match all of them.
Where does SheetCompare run?▾
Entirely in your browser. JavaScript parses both files in-tab, the diff runs in-tab, and nothing is uploaded to a server. You can verify this in your browser's network tab while using the tool.