Local by default
Small conversion jobs do not need a source-file upload. Browser processing creates a clearer privacy boundary and keeps the tools useful without accounts or cloud drafts.
Data conversion should show its work.
DataFormatKit is a focused set of browser-based data tools for people who want to see what will change before they download the result.
Built around the review step
DataFormatKit keeps the review step between input and download visible, so you can confirm the detected structure, understand the choices being made, and catch risky values before creating a file.
Keep controlYour source stays in the browser conversion runtime.
Review firstPreview rows, columns, warnings, and format-specific choices.
Export deliberatelyDownload only after the result matches what you expected.
Three principles guide every converter
Format-specific decisions
Delimited text needs row-shape checks. JSON needs number and nested-array handling. XML needs record-node and entity boundaries. Each converter explains the choices that belong to its format.
Evidence before reassurance
A success message says very little on its own. A preview, categorized issues, and a transformation report give you something concrete to review.
Focused conversion and validation tools
Each tool is built around the decisions and failure cases of one specific data task.
01
Text to CSV
Turn delimited text or line-by-line lists into a checked CSV.
Open tool →02CSV Validator
Locate structural warnings and spreadsheet-sensitive values before import.
Open tool →03CSV to Excel
Create an XLSX workbook while keeping every source value as text.
Open tool →04JSON to Excel
Choose records, flatten nested fields, and preserve long identifiers.
Open tool →05JSON to CSV
Flatten JSON into rows with explicit array and blank-value handling.
Open tool →06XML to CSV
Choose repeating records and keep attributes and namespaces visible.
Open tool →Focused by design. DataFormatKit is for small, inspectable conversion jobs—not database migration, cloud storage, or collaborative spreadsheet editing. Current processing limits keep the work predictable inside a browser.
Start with the data you already have.
Use the Text to CSV converter now, or tell me which small conversion problem would be most useful to solve next.