how to sign a pdf on iphone
The simplest native method: in the Photos app, tap Select, choose all the images you want, tap the Share icon, then tap Print — then pinch outward on the print preview to generate a PDF, and tap Share again to save it to Files. Alternatively, in the Files app you can tap and hold any image file and choose Quick Actions → Create PDF for a single image, or scan multiple pages in one session via the Files or Notes built-in scanner, which automatically saves all pages as one multi-page PDF.
簡短回答
The simplest native method: in the Photos app, tap Select, choose all the images you want, tap the Share icon, then tap Print — then pinch outward on the print preview to generate a PDF, and tap Share again to save it to Files. Alternatively, in the Files app you can tap and hold any image file and choose Quick Actions → Create PDF for a single image, or scan multiple pages in one session via the Files or Notes built-in scanner, which automatically saves all pages as one multi-page PDF. Dedicated scanner apps let you add, reorder, rotate, and delete pages before exporting, giving you more control than the native workaround.
ScanTo Pro 在 iPhone 上就能辦到:掃成乾淨的 PDF、在裝置上跑 OCR,還能用 Face ID 鎖住檔案,而且是買斷制、沒有訂閱。最新功能請見 App Store 商店頁面。
挑選前要注意什麼
- Photos app: Select images → Share → Print → Pinch out → creates a multi-page PDF (no extra app needed)
- Files app: Long-press an image → Quick Actions → Create PDF (single image only)
- Notes/Files scanner: Scan multiple pages in one session; all pages are saved as one PDF automatically
- Page order in the Photos Print method follows your selection order — tap images in the sequence you want
- Dedicated scanner apps allow reordering, rotating, and deleting individual pages before export
實用的決策步驟
- Photos app: Select images → Share → Print → Pinch out → creates a multi-page PDF (no extra app needed).
- Files app: Long-press an image → Quick Actions → Create PDF (single image only).
- Notes/Files scanner: Scan multiple pages in one session; all pages are saved as one PDF automatically.
- Page order in the Photos Print method follows your selection order — tap images in the sequence you want.
- Dedicated scanner apps allow reordering, rotating, and deleting individual pages before export.
快速比較
| 需求 | 要確認什麼 | 為什麼重要 |
|---|---|---|
| 定價模式 | 確認實用功能是需要訂閱、一次性解鎖,還是都不用。 | 第一天最便宜的 App,一年後不一定最便宜。 |
| 隱私模式 | 內容敏感時,優先選在裝置上處理的 App。 | 私人文件、履歷、學習資料與家庭內容,都值得謹慎對待。 |
| 匯出/綁定 | 確認檔案格式、分享、備份與刪除的控制權。 | 好的 App 應該幫你完成任務,而不是把你的成果綁死。 |
ScanTo Pro 適合哪些情境
如果你想要不必訂閱、又完全在裝置上處理的私密掃描,ScanTo Pro 很合適。
一次買斷無訂閱裝置端處理
這是由 App 開發團隊親自撰寫的購買指南。App Store 的功能與價格可能會有變動，請在購買前至商店頁面確認詳細資訊。
常見問題
Can I add a new page to an existing PDF on iPhone without a third-party app?
Native iOS does not offer a 'merge PDFs' feature in the Files app. You'd need a third-party PDF or scanner app to insert pages into an existing PDF.
Does the Photos → Print → Pinch method preserve image quality?
It generally preserves screen-resolution quality well, but it re-renders images at the display resolution rather than the original camera resolution, so it may not be ideal for archival-quality documents.
Is there a page limit when scanning multiple pages into one PDF on iPhone?
iOS itself imposes no hard page count limit, but very large multi-page PDFs can become slow to load and export. Most users report no issues up to 50–100 pages; performance degrades at very high page counts on older devices.