Selected Spreadsheet Source Values

How to use Selected Spreadsheet Source Values

Read a small canonical XLSX worksheet range as stored source records. Shared strings and inline text become literal strings while numeric spellings retain precision. Each output cell distinguishes absent source from a present cell without a stored value and keeps its formula source when present. This is a source export, not an Excel rendering or calculation engine.

1. Choose a supported small XLSX or load the original generated source-value fixture.
2. Enter the exact sheet name and an explicit inclusive range of at most 5,000 cells.
3. Review cached-value/formula/hidden-sheet evidence in JSON; download CSV only after considering formula protection and privacy.

Good to know

• One nonempty ZIP at most 4 MiB, existing strict 200-entry archive preflight and CRC-checked selected extraction. Canonical transitional SpreadsheetML xl/workbook.xml main type and internal worksheet/shared-string relationships only; macro-enabled main types, encryption and unsupported paths are refused.
• At most 6 selected UTF-8 XML documents, 200,000 bytes per document/1 MiB aggregate and 40,000 aggregate XML elements; existing DTD/entity, 20,000-elements-per-document and 60-level guards apply. A 5-second cooperative budget does not forcibly interrupt native XML parsing.
• At most 20 declared sheets, 5,000 scanned source cells, 5,000 shared strings and 200,000 aggregate cell text characters. Inclusive selection spans at most 64 columns and 5,000 cells; large declared dimension attributes never allocate a full virtual worksheet.
• Source n/s/inlineStr/str/b/e/d cells only. Original numeric/date lexemes and Excel _xHHHH_ string escape spellings remain strings; booleans remain 0/1. Formulas are never evaluated, shared formulas are not expanded and cached values may be absent or stale. Workbook date-system source is reported without converting serials. Styles, date display, merged-cell propagation, row/column visibility and external-link caches are unassessed.
• CSV has column letters and row_number rather than inventing a header row. Formula-prefix protection can change risky exported strings; JSON retains originals. Hidden-sheet or other private source may be selected intentionally. Other parts are neither rendered, fetched nor certified safe; this is not full Office compatibility or document anonymization.
• Processing is local. Output is limited to 1,000,000 text characters unless a stricter file limit is stated.