=== Page 1 === Quarterly Field Report — Q3 2026 Demo document generated by YYSI for the PDF extraction guide. All data is synthetic. This page has a real text layer. Open it in any PDF reader and you can select these words with the mouse and copy them. Extraction tools read the same text without OCR — that is why the extracted result keeps every word. Left column: maintenance Right column: inspections A. Filter replaced on 12 August. D. Brake pads measured at 6 mm. B. Coolant topped up, no leaks. E. Lights and horn tested, pass. C. Tyre pressure set to 2.4 bar. F. Next visit booked 30 October. Item Qty Unit price Amount Air filter 2 14.50 29.00 Wiper blades 4 9.80 39.20 Coolant (1 L) 3 12.35 37.05 Total 105.25 === Page 2 === 库存盘点示例(合成数据) 本页带有真实文字层:在阅读器里可以直接选中并复制这些汉字, 提取工具不需要 OCR 也能读到同样的内容。 但换行位置和先后顺序取决于 PDF 内部书写顺序,双栏内容尤其要核对。 左栏:保养记录 右栏:安全检查 甲.已更换机油滤芯。 丙.灯光测试通过。 乙.已补充玻璃水。 丁.胎压恢复正常。 品名 数量 单价(元) 金额(元) 空气滤芯 2 14.50 29.00 雨刮片 4 9.80 39.20 冷却液(1升) 3 12.35 37.05 合计 105.25