Clean messy spreadsheets in seconds.
Drop a CSV or Excel file. Auto-fix duplicates, dates, phones, and formatting — then download with highlighted cells and a full change log your team can trust.
Analyze for free
Upload and see every problem before you pay.
Report before you apply
Download an Excel audit with zero changes to your data.
Highlights + change log
Yellow, red, and blue cells plus Legend and Changes sheets.
Private by default
Your files are never public or used for training.
Spreadsheets shouldn't need an hour of cleanup.
Exports from CRMs, surveys, and ops tools often arrive with the same messy patterns.
Duplicates
Same row appears twice
Names
" john smith " vs "John Smith"
Formatting
Mixed tabs, spaces, line breaks
Empty rows
Blank rows between data blocks
Dates
01/05/24, 2024-01-05, Jan 5
Phones
(555) 123-4567 vs 555.123.4567
Sound familiar? Fix Spreadsheet finds these automatically — so you don't have to hunt cell by cell.
See the transformation
Messy export on the left. Clean, import-ready data on the right.
7 problems → 0 problems
How it works
No formulas to learn. Just upload, review, and download.
Upload
Drop your CSV or Excel file. We validate size and format before processing.
Review
Plain-language summary, column roles, and a before/after preview. Download a report with no changes, or confirm when ready.
Download
Get Excel with safe fixes applied, color highlights for manual review, plus Legend and Changes sheets.
What it fixes
Common data-quality problems, detected automatically and explained in plain language.
Duplicate rows
Find and remove repeated records.
Two identical John Smith rows → one kept
Whitespace
Remove accidental spaces that break matching and filtering.
" John " → "John"
Dates
Bring inconsistent date formats into one consistent format.
01/05/24 vs 2024-01-05 → normalized
Phone numbers
Normalize obvious formatting differences.
(555) 123-4567 → +1 555 123 4567
Emails
Identify malformed email values.
john@EMAIL.com flagged for review
Empty rows
Remove unnecessary blank rows.
Trailing empty rows removed
Manual review highlights
Color-code cells your team still needs to fix.
Yellow = missing · Red = invalid · Blue = duplicate
Audit trail
Legend and Changes sheets in every Excel download.
Full before → after log for IT and compliance
Built for files you wouldn't email around
We only claim what the product actually does. Read the full security overview for details.
Private file storage
Files are stored in private object storage and deleted after 7 days.
No model training
Your spreadsheet data is not used to train AI models.
Encrypted transport
All uploads and downloads use HTTPS in production.
You stay in control
Download a report with zero changes, review highlights, then apply fixes when you are ready.
Full change log
Every Excel download includes a Changes sheet listing row, column, before, and after.
Use cases
Whenever a spreadsheet needs to be imported, merged, or shared — start clean.
Pricing
Start free. Upgrade when spreadsheet cleanup becomes part of your routine.
Free
For trying the product
$0
- 3 cleanings per month
- Files up to 5 MB
- Up to 10,000 rows
- Core cleanup rules
- 7-day job history
- Free analysis on every upload
Pro
For recurring spreadsheet cleanup
$19/month
- 100 cleanings per month
- Files up to 50 MB
- Up to 500,000 rows
- All cleanup rules
- 90-day job history
- Priority for power users
FAQ
Quick answers before you upload your first file.
Use a simple table export: one sheet, column headers in the first row, and one record per line. We process the first sheet only. Title rows, logos, or tables that start below row 1 may be misread — delete extra rows above your headers or export just the data tab before uploading. Download the example .xlsx from your dashboard to see a supported layout (any column names work).
CSV (.csv), Excel (.xlsx), and legacy Excel (.xls). Upload from your browser — no desktop software required.
Free plans support up to 10,000 rows and 5 MB files. Pro supports up to 500,000 rows and 50 MB files.
Duplicate rows, extra whitespace, inconsistent capitalization, mixed date formats, malformed emails, inconsistent phone numbers, empty rows and columns, mixed data types, and duplicate people when email and name match. Values we cannot safely guess — missing cells, invalid dates, duplicate emails with different names — are highlighted for manual review.
We only apply fixes you approve. Download a report first with zero changes, or apply safe fixes after review. Original files are kept until the retention period expires.
Yes. After analysis you get a plain-language summary, issue breakdown, and before/after preview. Download an Excel report with planned changes (no edits applied), or click apply when you are ready.
Yes. CSV is fully supported for cleanup and download. For yellow, red, and blue cell highlights plus Legend and Changes sheets, download the Excel (.xlsx) version after cleaning.
Yes. Upload .xlsx or .xls directly. Excel downloads include color-coded highlights for manual review, a Legend sheet explaining each color, and a Changes sheet listing every auto-fix.
Yes. Before applying fixes, download an Excel report that shows detected issues, highlighted cells, and planned changes — your original data stays untouched.
Yellow marks missing values to fill in. Red marks invalid values (e.g. impossible dates). Blue marks duplicate emails or IDs that need a human decision. Highlights appear in Excel downloads and in the dashboard preview.
Yes. You get 3 cleanings per month on the free plan. Analyzing a file is always free — you only use a cleaning credit when you apply fixes and download.
Upgrade to Pro for higher limits and full cleanup rules. Subscriptions are billed monthly through Polar. Cancel anytime from your billing portal.
Files are stored privately and automatically deleted after 7 days. Downloads go through your account only — buckets are not public.
No credit card to analyze
Your messiest spreadsheet is one upload away.
Analyze for free. See every problem. Pay only when you download the clean file.