FilesStayLocal™
HOW IT WORKS

Free Document Comparison Tool

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

Compare two versions of a business document and immediately see changed, added and removed information.

Start Free Access See All Products
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.
Old version
New version
→
Comparison report.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.

ZIPSource file
Open file
Source file preview
XLSXGenerated output
Open file
Generated output preview

What is in the source

OLD VERSION
Payment Terms: Net 30
Delivery: 5 business days
Price: $12,500

NEW VERSION
Payment Terms: Net 45
Delivery: 7 business days
Price: $12,250
Warranty: 12 months

What the output contains

Field | Old | New | Change
Payment Terms | Net 30 | Net 45 | Changed
Delivery | 5 business days | 7 business days | Changed
Price | 12500 | 12250 | Changed
Warranty | — | 12 months | Added
Supported source patterns

What your files can look like

Changed valuesAdded textRemoved textReordered sectionsField/value documentsNarrative business documents

What to expect: The report highlights what changed; it does not provide legal advice or decide whether a change is acceptable.

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.

Start Free AccessSee All Products
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.