Files
Inspect files and convert structured data.
Create a ZIP archive
Pack several files into one ZIP you can email or upload.
Open Create a ZIP archiveExtract a ZIP archive
Look inside a ZIP, then save just the files you actually want.
Open Extract a ZIP archiveFile checksum calculator
Compute SHA-256, SHA-1, SHA-384 and SHA-512 checksums and compare them to a published one.
Open File checksum calculatorCSV to JSON converter
Convert CSV to JSON and JSON back to CSV, with quoted fields and ragged rows handled properly.
Open CSV to JSON converterSpreadsheet converter
Convert an Excel workbook to CSV, or a CSV into an Excel workbook.
Open Spreadsheet converterFile type inspector
Identify what a file really is from its own bytes, and see the first 256 in hex.
Open File type inspector
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Need more than a quick tool?
These are free and always will be. If one of them is solving a problem you keep having, the underlying issue is usually worth a conversation.