Fixed-scope service · version 1.0.0

Make formula-like CSV cells inert.

Send one small comma-delimited CSV. Receive a separate UTF-8 BOM copy with formula-like cells prefixed by an apostrophe, plus a JSON report showing every change.

Request the fixed service Run the free checker first

Accepted input

One comma-delimited CSV, up to 5 MB, 10,000 data records and 100 columns. UTF-8 and GB18030 input are supported.

Rules applied

ASCII and full-width formula markers, leading TAB/CR/LF, and whitespace before a marker are prefixed with one apostrophe. Existing apostrophe prefixes stay unchanged.

Delivered files

A separate UTF-8 BOM CSV and JSON audit report with record, column, rule, short previews and SHA-256 hashes. The source is never overwritten.

How the order works

  1. Open a public request using fictional examples only. Never post customer records, credentials, payment details or private files.
  2. The dimensions, encoding, deadline and rule fit are reviewed. If accepted, a private exchange and PayPal payment instructions are provided.
  3. Delivery is normally within one business day after the exact scope, private transfer and payment are confirmed.

Service boundary: CSV only. No XLSX, macro analysis, malware testing, business-rule inference or absolute security guarantee. Spreadsheet behavior varies. One correction is included if the delivered output does not follow the rules stated above.

中文说明

固定价格 12 美元：处理一个不超过 5 MB、10,000 条数据记录、100 列的逗号分隔 CSV，支持 UTF-8 和 GB18030。交付独立的 UTF-8 BOM 修复副本和逐项 JSON 审计报告，不覆盖原文件。

先用虚构示例提交公开询问，确认范围后再通过私下渠道传文件并使用 PayPal 付款。请勿在 GitHub Issue 中公开真实客户数据、账号、付款信息或私密文件。