Edit PDF Metadata
Change title, author, subject, and keywords
Edit PDF Metadata — what it does
Set a PDF's title, author, subject and keywords, and download the document with the new properties written in. Metadata is what document management systems, search indexes and even the window title of a PDF viewer display, so filling it deliberately makes a document findable and correctly attributed.
When this tool helps
- Giving a document a proper title so it displays sensibly instead of showing a filename.
- Setting author and keywords before adding a file to a document management system.
- Correcting metadata inherited from a template that named the wrong author.
How to use it
- Choose the PDF file.
- Enter the document title, author, subject and keywords.
- Process the change.
- Download the updated PDF.
Accuracy, limits, and good practice
- The title, not the filename, is what many viewers display in the window and tab — an untitled PDF often shows a meaningless internal string.
- Keywords help internal search systems; use terms colleagues would actually search for rather than exhaustive lists.
- Setting metadata deliberately is also a privacy control: it replaces whatever the producing application wrote there by default.
- Set the title to what the document is called, not to its filename — the two diverge the moment someone renames the file.
Frequently asked questions
Where is this metadata visible?
In a viewer's document properties dialog, in the window title, and in search and document management systems that index it.
Does changing it alter the page content?
No, only the document properties. Pages, text and images are untouched.
How do I clear metadata instead?
The metadata cleaner removes the standard properties rather than replacing them.
Does the title appear on the page?
No, it is document metadata. Page content is unaffected, so a cover title still has to be written into the document itself.
Related tools on this site
- Extract PDF Text — Read selectable text and download it as TXT
- Word Counter — Count words and characters instantly
- PDF Bates Numbering — Add sequential document-control numbers with a custom prefix and position
Everything above runs inside this page. Edit PDF Metadata needs no account, no upload, and no server round trip — close the tab and nothing is left behind.
編輯 PDF 中繼資料能做什麼
設定 PDF 的標題、作者、主旨與關鍵字，並下載寫入新屬性的文件。中繼資料是文件管理系統、搜尋索引，甚至 PDF 檢視器視窗標題所顯示的內容，因此認真填寫能讓文件被找到、也被正確歸屬。
什麼時候用得上
- 為文件填上正式標題，讓它顯示得體，而不是只出現檔名。
- 把檔案放進文件管理系統前，先設定作者與關鍵字。
- 修正從範本繼承、作者欄寫錯人的中繼資料。
使用步驟
- 選擇 PDF 檔案。
- 輸入文件標題、作者、主旨與關鍵字。
- 執行變更。
- 下載更新後的 PDF。
精確度、限制與實務建議
- 許多檢視器在視窗與分頁顯示的是標題而非檔名——沒有標題的 PDF 常會顯示一串無意義的內部字串。
- 關鍵字有助於內部搜尋系統，請填同事真的會搜的詞，而不是列一長串。
- 刻意設定中繼資料同時也是隱私控管：它會覆蓋產生軟體預設寫進去的內容。
- 標題請填文件真正的名稱而非檔名——只要有人改過檔名，兩者就分家了。
常見問題
這些中繼資料在哪裡看得到？
檢視器的文件屬性對話框、視窗標題，以及會建立索引的搜尋與文件管理系統中。
修改會動到頁面內容嗎？
不會，只改文件屬性，頁面、文字與圖片都不受影響。
我想清空而不是覆蓋怎麼辦？
中繼資料清除工具會移除標準屬性，而不是替換它們。
標題會顯示在頁面上嗎？
不會，那是文件中繼資料。頁面內容不受影響，封面標題仍必須寫在文件本身裡。
本站相關工具
- 提取 PDF 文字 — 讀取可選取文字並下載為 TXT
- 字數統計 — 快速統計字數與字元數
- PDF Bates 編號 — 加入連續的文件管理編號，並可設定前綴與位置
以上步驟全部在這個頁面內完成，編輯 PDF 中繼資料 不需要註冊、不上傳檔案、也不經過伺服器，關閉分頁後不會留下任何資料。