CSV to Excel is a data converter that reads CSV and TSV (detecting the separator), JSON arrays of objects (flattening nested objects into columns such as address.city), XML (turning the repeating element into rows, with its children and attributes as columns) and Excel .xlsx files with all their sheets. It writes Excel .xlsx, CSV with a comma, semicolon or tab, with an Excel-compatible option for accents, or JSON. In Excel, numbers stay as numbers, while codes with leading zeros and numbers longer than 15 digits are kept as text, so zip codes, IDs and account numbers don't change. It doesn't read the old .xls format. There are pages for each common case: Excel to CSV, JSON to CSV, JSON to Excel, CSV to JSON and XML to Excel. Typical sources are bank and store exports, accounting systems, API responses, product feeds and electronic invoices.
Zip files puts any type of file into one ZIP, with normal compression or none, and an optional password. AES-256 is the secure choice, but Windows and macOS need extra software such as 7-Zip, WinRAR or The Unarchiver to open it; ZipCrypto opens in Windows Explorer but is weak. Whole folders can't be added in one step, and photos, videos and PDFs barely shrink because they are already compressed. Password protect ZIP opens with the password option ready.
Unzip files opens ZIP archives, including ZIP64 and password-protected ones, lists the files and their sizes, and lets you download one file or all of them in a new ZIP that keeps the folders, up to 5000 files. RAR and 7z archives are not supported.
To edit a table after converting it, Online spreadsheet opens .xlsx and .csv files in the browser, and PDF to Excel pulls tables out of PDF documents. A common workflow: download a CSV export from your bank or store, convert it to Excel, review it in Online spreadsheet, and send the result with other documents in a password-protected ZIP.