Fix Spreadsheet Issues Before You Import
Upload your Excel or CSV file. Clean That Sheet fixes common import-blocking cleanup issues, flags anything that needs review, and shows you a free preview before anything changes.
Upload your spreadsheet once. Clean That Sheet checks for imported-data problems and other common cleanup problems, then shows you a free preview before anything is changed.
Free preview first. Full cleanup only if it helps.
Upload your file to see an issue summary, duplicate groups, blank rows, sample cleaned rows, and cleanup notes. If the preview looks useful, unlock the full cleaned file and change report for $4.99.
Drag & drop your file or screenshot, or browse
Accepts .xlsx, .xls, .csv, .png, .jpg, and .pdf · up to 50 MB
Tip: upload the actual spreadsheet file, not Excel temporary files that start with ~$.
Free scan + cleaned sample. No charge to preview.
No signup. Original file unchanged. View Trust & File Handling
On mobile, screenshots and CSVs work best. Larger Excel files are easier from desktop.
Not ready to upload? See a Sample Cleanup
Built for
Built for business professionals cleaning real spreadsheet messes.
Clean That Sheet is made for analysts, bookkeepers, admins, operators, founders, finance teams, and spreadsheet-heavy professionals who need to clean files before sending, importing, merging, or reporting.
- Analysts
- Bookkeepers
- Admins
- Operators
- Founders
- Finance teams
- Spreadsheet-heavy workflows
Fix safe file issues before you try the import again.
You do not need to choose the perfect tool first. Upload your Excel or CSV file, review what CTS finds, and unlock only when you are ready.
CTS can also check for duplicate rows, blank rows, spacing issues, inconsistent formatting, messy headers, date cleanup, imported-data problems, and more.
Not sure what your file needs? See everything CTS can check.
How Clean That Sheet works
A finished file, not a conversation. General AI tools can help you think through a spreadsheet problem. Clean That Sheet is built to help you finish the urgent, repeatable cleanup job.
- Step 1
Upload
Drop in a CSV, Excel file, screenshot, or PDF.
- Step 2
Preview
See exactly what we found before you pay.
- Step 3
Download
Unlock the finished file when it looks right.
Preview before you pay
How a general chat tool compares to Clean That Sheet for the same cleanup job.
With a chat tool
With Clean That Sheet
Explain the problem and write prompts
Upload the file
Clarify what should be cleaned
Preview the cleanup
Check whether the output is usable
Download the finished spreadsheet
Figure out what changed
Get a Change Report
No prompts. No back-and-forth. Get your file ready before you import, merge, send, or submit it.
What Clean That Sheet actually does
Built for messy real-world files. If it has data in it, there is a good chance we can help.
Supported files
- Excel files (.xlsx, .xls)
- CSV exports
- Screenshots (.png, .jpg)
- PDF report tables
Common cleanup outcomes
- Duplicate rows removed or flagged
- Blank rows and empty columns cleared
- Dates and number formats standardized
- Extra spaces and casing cleaned up
- Invalid emails and obvious errors flagged
- Original structure and headers preserved
- Preview flags messy cells before payment.
- Duplicates, blanks, formatting issues, and invalid emails are easier to spot.
- You decide whether the cleanup is worth unlocking.
- Tested on messy exports, contact lists, transaction sheets, and screenshot cleanups.
See the cleanup in action
CRM export → import-ready file.
Before
| Name | Created | |
|---|---|---|
| Ada Lovelace | ADA@Email.com | 2024-01-05 |
| ada lovelace | ada@email.com | 5/1/2024 |
| (empty) | (empty) | (empty) |
After
| Name | Created | |
|---|---|---|
| Ada Lovelace | ada@email.com | 2024-01-05 |
Exports from CRMs, ad platforms, online store stores, payment processors, and analytics tools all have their own personalities, and all of them produce slightly broken spreadsheets. Names typed three different ways. Emails in mixed casing. Dates in whatever format the source system felt like that day. Empty padding rows. Columns nobody asked for. Clean That Sheet is built for the moment after you hit "export" and before you hit "import somewhere else".
We handle the most common problems automatically. Duplicate and near duplicate rows get collapsed. Whitespace gets trimmed from every cell. Emails and names get normalized to consistent casing. Dates get standardized. Empty rows and empty columns get dropped. Column headers get tidied so other tools recognize them. The result is the kind of file your downstream tool actually wants to receive.
This is the step that fixes "the import worked but the data is wrong". Most failed imports aren't failures, they're successes that loaded garbage. A row that imports as a new customer because the email had a trailing space. A campaign report that double-counts because the same row appears in two casings. A dashboard that shows weird gaps because dates were in mixed formats and half of them parsed as text. Cleaning before importing prevents all of it.
Upload your .csv, .xlsx, or .xls export, Shopify, Stripe, HubSpot, Mailchimp, Pipedrive, QuickBooks, Google Ads, Meta Ads, whatever it is, and Clean That Sheet handles it the same way. Preview is free. Pay only to unlock the finished file. No subscription, no signup, no row caps.
If you import data from one tool into another even once a month, this is the missing middle step. It's faster than writing a script, cheaper than buying an ETL tool, and you don't need to ask IT for help.
Want cleaner files with less work?
Get occasional updates as Clean That Sheet adds more ways to fix messy spreadsheets.