FilesStayLocal™
HOW IT WORKS

Free Spreadsheet Cleaner

Free access available now. No payment required during the current launch period.

Clean messy Excel or CSV data conservatively while protecting formulas, identifiers and the original source file.

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Local processing & source-file safety. Your source files stay on your computer during normal document processing and are not uploaded to FilesStayLocal. The original source files are not modified; FilesStayLocal creates separate output files. Please review generated results before using them for important business or operational work.
High-level flow

From source files to finished output

A simple local workflow designed to keep your source documents on your computer.

1
Select your filesChoose the source files for this product inside the desktop app.
2
Process locallyFilesStayLocal reads them on your computer. No website upload is required.
3
Review the resultInspect the structured output and any review notes produced by the tool.
4
Save the new fileYour originals stay unchanged; the tool creates a separate output file.
Messy XLSX / CSV
→
Cleaned workbook.xlsx
Example

See the source file and the output it creates

Compare the source with the generated result. Click either preview to see the full-size file view.

XLSXSource file
Open file
Source file preview
XLSXGenerated output
Open file
Generated output preview

What is in the source

 customer id , NAME , amount , notes
 00123 , Alice  , $1,250.00 , paid 
 00124 , Bob , 980 ,   pending
 , , ,
 00124 , Bob , 980 , pending

What the output contains

Customer ID | Name | Amount | Notes
00123 | Alice | 1250.00 | paid
00124 | Bob | 980.00 | pending

Cleaning Report
Blank rows removed: 1
Whitespace normalized
Duplicate candidate identified
Identifiers preserved as text
Supported source patterns

What your files can look like

Extra whitespaceBlank rows/columnsInconsistent headersSafe numeric typingIdentifier preservationDuplicate candidates

What to expect: Cleaning is conservative. Formulas, leading-zero IDs and complex layouts are protected rather than aggressively rewritten.

Source quality

Digital text and structured files work best

Best resultsText-based PDFs or structured spreadsheet/text files where content can be read normally by the desktop app.
Complex layoutsHeaders, repeated page headings, multiple tables, mixed narrative + tables and missing optional values are handled conservatively when the product supports them.
Scanned/image-only PDFsOCR is not enabled yet. Image-only inputs are detected and flagged for review instead of silently producing unreliable data.
Privacy

No website upload required

Select your files inside the downloaded desktop app. Source documents are processed locally on your computer; the website is used for account, licensing and downloads.

Your original files are never modified. FilesStayLocal creates a new output file.

Access

Try it without sharing your documents

Free Access duration: 2 hours. Duration is controlled by the license service.

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Important limitation

Review matters when the source is ambiguous

FilesStayLocal is designed to preserve traceability and flag uncertainty rather than invent missing values. Highly inconsistent layouts, image-only sources and ambiguous fields can require human review.