Repair PDF
Fix a corrupted or damaged PDF by rebuilding its structure and recovering as much content as possible.
Select PDF files
or drag and drop files here
Got a password-protected PDF? Unlock it here first
How to Repair PDF
1
Upload corrupted file
Select the PDF that your computer refuses to open or displays errors for.
2
Execute repair algorithms
Our engine digs into the raw code of the file, attempting to fix broken syntax and rebuild missing structural tags.
3
Download salvaged file
Download the repaired document. We rescue as much readable content and formatting as technically possible.
Frequently Asked Questions
Will this fix every broken PDF?▼
它修复了最常见的结构损坏，例如下载过程中中断的文件或交叉引用表损坏的文件。如果文件被严重截断或其原始数据被扰乱超过该范围，则可能无法完全恢复。
究竟是什么导致 PDF 损坏？▼
常见原因包括下载或文件传输中断、保存时应用程序崩溃、存储介质故障或软件首先错误地写入文件。
How does the repair process work?▼
The engine rewrites the file's cross-reference table and fixes broken stream object offsets, essentially rebuilding the PDF's internal map so viewers can locate and render its content again.
修复会改变我的文档的外观吗？▼
The goal is to restore the original appearance as closely as possible — repair fixes the underlying structure rather than altering your text, images, or layout.
如果修复后的文件仍然无法打开怎么办？▼
That usually means the damage goes deeper than structural corruption, such as missing raw page data, which unfortunately can't be reconstructed since it no longer exists in the file.