Free Online File Utilities
Convert data formats, open archives and inspect files without installing software. Files are read locally by your browser and never uploaded.
File Utilities (8)
CSV to JSON Converter
Turn CSV or TSV data into a JSON array, with typed values and a row preview.JSON to CSV Converter
Flatten a JSON array of objects into spreadsheet-ready CSV.XML Formatter
Pretty-print or minify XML while keeping CDATA, comments and attributes intact.XML Validator
Check XML is well-formed and see its root, depth, element count and namespaces.File Size Converter
Convert between KB, MB, GB, KiB, MiB, GiB and bits, and estimate download times.ZIP Extractor
Open a ZIP archive in your browser, preview files and download what you need.File Information Viewer
See a file's real type, exact size, SHA-256 checksum and first bytes.CSV Formatter
Clean up CSV files: change delimiter, trim cells, drop empty rows and fix ragged rows.
About these file utilities
Data rarely arrives in the format you need. These utilities convert spreadsheets exported as CSV into JSON for APIs, flatten JSON into CSV for Excel or Google Sheets, and tidy XML so it can be read and validated.
The ZIP extractor lets you look inside an archive and save individual files — useful on a shared or locked-down computer where you cannot install an unzip tool. The file information viewer identifies a file's real type from its signature and computes SHA-256 checksums for integrity checks.
Frequently asked questions
Can the ZIP extractor open password-protected archives?
No. Encrypted ZIP files are detected and reported, but they cannot be decrypted in the browser by this tool.
How large can my CSV be?
Files of tens of megabytes work well on desktop browsers. Parsing happens in your browser, so very large files depend on available memory.