使用结果前如何检查？
保留原件并核对导出页数和顺序。合并生成的新 PDF 不应视为保留源文档数字签名的有效性；表单、书签和无障碍要求也应单独检查。
PDF Merge可以处理什么？
PDF Merge 用于在浏览器中转换数据或文件，并清楚显示处理结果和限制。 已核对的功能： Multiple PDF selection, File reordering, Local page copying, 100 MB total limit.
Local merge protects document transfer
Use local merging for sensitive or moderately sized files. A server service may handle larger documents but requires upload and a separate retention assessment.
如何使用？
- Choose at least two PDF files with a combined size no greater than 100 MB.
- Arrange the file order and remove unwanted documents.
- Merge, verify the page count, and download merged.pdf.
实际输入输出示例
Combine two documents in a chosen order
输入
appendix.pdf (2 pages), report.pdf (8 pages)输出
merged.pdf with 10 pages; appendix pages firstEvery page is copied into a new PDF without converting the page to an image.
常见错误与修复方法
| 现象 | 可能原因 | 修复方法 |
|---|---|---|
| A PDF cannot be opened. | The file is encrypted, damaged, incomplete, or not actually a PDF. | Use an authorized unlocked and valid exported copy. |
| The tab runs out of memory. | The selected files exceed available browser memory. | Merge smaller batches on a device with more available memory. |
PDF structure can block a merge
该工具的实际边界： Encryption, damaged page objects, unsupported security handlers, or insufficient device memory can stop processing. The browser does not upload the file for diagnosis.
标准与实现参考
- pdf-lib documentation (opens in a new tab)Documents the browser PDF library used to copy pages and save the merged file.
关于PDF Merge的常见问题
Are PDFs uploaded?
No. Selected files are read and merged in the current browser tab.
Does merging change page quality?
Pages are copied rather than rasterized, so content is not intentionally recompressed.
Can encrypted PDFs be merged?
Not reliably. Use an authorized unlocked copy before merging.
更新记录
本次实质更新： PDF Merge: Added local multi-file merging, file reordering, page counting, a 100 MB total guardrail, and merged PDF download. 2026-10-15：补充结果检查步骤和具体能力边界。