📂 Batch Upload Rule
For multi-file uploads, all files in the same batch should use the same source type (for example all JPG or all MP3).
XLSX (Microsoft Excel Open XML Spreadsheet) is an editable spreadsheet format. CSV (Comma-Separated Values) is a plain-text table format. Explore our Universal Converter to convert other file types.
Quick rules and tips to get the best results.
For multi-file uploads, all files in the same batch should use the same source type (for example all JPG or all MP3).
Set your preferred output quality to balance file size and clarity. Compression behavior is tailored to each file format.
Each conversion request supports up to 200 MB total. Each user can upload a total of 500 MB per hour.
Completed jobs are saved on this device for up to 1 hour, unless you remove them from the list.
Converting XLSX to CSV focuses on table structure and compatibility for spreadsheet workflows. CSV and XLSX exports are structure-focused, so this conversion path does not expose quality-slider compression tuning. The converter prioritizes consistent data export behavior instead of media-style compression controls.
CSV stores rows and columns as plain text, so XLSX content is flattened into delimiter-separated values. This makes data portable, but nested formatting and worksheet-level behaviors do not carry over.
Cell styling, formulas, merged cells, and charts are typically removed when exporting to CSV. The result focuses on raw values, which is ideal for imports, scripts, and analytics pipelines.
CSV and XLSX exports are structure-focused, so this conversion path does not expose quality-slider compression tuning. CSV conversion is data-structure focused, so output is driven by row/column serialization rather than image, audio, or video compression settings.
Character encoding and delimiter expectations vary between tools. If special symbols or non-English text are present, verify encoding after export to prevent broken characters in spreadsheets or ETL jobs.