修復損壞的 PDF
修復無法開啟，或在其他應用程式中顯示異常的 PDF。
運作方式
1. 上傳損壞的 PDF。2. 我們會重建其內部結構。3. 下載修復後的檔案。
這能修復哪些類型的問題？
常見的結構性問題——例如毀損的交互參照表、檔案被截斷或格式錯誤，或其他導致 PDF 無法正常開啟的內部損壞。但無法救回檔案中確實已經遺失的頁面或內容。
如果檔案無法修復怎麼辦？
系統會顯示錯誤訊息，而不會給您一個其實仍然無法開啟的檔案——有些損壞程度過於嚴重，是無法修復的。
Why did my PDF get corrupted in the first place?
Usually it's not something you did. The most common causes are a download or file transfer that got cut off partway through, a cloud sync (Google Drive, OneDrive, WhatsApp) that didn't finish writing the file, or whatever program created it crashing before it finished saving. Any of those can leave the file's internal structure incomplete even though most of the actual content is still in there.
Is a PDF that asks for a password the same problem?
page.repair.faq4Text
Does repairing change how the PDF looks or what's in it?
No. It only touches the file's internal structure — things like the cross-reference table that tells a reader where each page and object lives — not the actual content. Text, images, and layout come through as they were; nothing gets recompressed, rasterized, or flattened in the process.
What can I try if the repair doesn't work?
A few things worth trying before giving up on the file: open it in a different PDF reader in case the problem is the viewer rather than the file, go back to wherever you got it and download or export it again — the copy you have may be the one that got cut off — or ask whoever sent it for a fresh copy. If none of that helps, the damage is likely too deep for any tool, ours included, to reconstruct.