Siêu dữ liệu PDF
Chỉnh sửa hoặc xóa tiêu đề, tác giả, chủ đề và từ khóa của PDF.
Thả PDF của bạn vào đây hoặc nhấp để chọn
PDF tối đa 100 MB
Siêu dữ liệu
Để trống một trường để giữ nguyên không thay đổi.
Xóa mọi trường siêu dữ liệu khỏi tài liệu.
Chỉnh sửa hoặc xóa tiêu đề, tác giả, chủ đề và từ khóa của PDF.
Thả PDF của bạn vào đây hoặc nhấp để chọn
PDF tối đa 100 MB
Siêu dữ liệu
Để trống một trường để giữ nguyên không thay đổi.
Xóa mọi trường siêu dữ liệu khỏi tài liệu.
PDF metadata is the invisible information that describes your file: the title, author, subject, keywords and producer (the software that created the document). These fields do not change the content of the pages, but they travel with the file wherever it goes. Learning to edit PDF properties gives you direct control over how your document is identified.
Clean metadata makes documents easier to organise and find: a clear title and relevant keywords let you locate a file in a library or an internal search engine, instead of guessing from an obscure filename. It also supports a professional appearance, since the title shown in the reader tab and the author name give a first impression before the file is even opened. Filling in these fields correctly is a small step toward consistent, searchable archives.
The same file can reveal more than you intend: an author name, the producing software and creation dates leave traces that expose your identity or your tools. Before releasing a document publicly, choosing to remove PDF metadata is a sensible way to anonymise it and erase those fingerprints. Clearing the author and producer fields limits what others can infer about the source.
This tool pairs naturally with other steps: protect encrypts the file with a password, edit adjusts the page content, and compress reduces the file size before sending. At pdfOutils, privacy comes first: no sign-up is required and your files are deleted automatically after processing, never stored or reused. That way you keep full control of the information attached to your documents.
Upload
Upload your PDF file into the drop area (or drag and drop it).
Configure
Chỉnh sửa hoặc xóa tiêu đề, tác giả, chủ đề và từ khóa của PDF.
Download
Download the resulting document in one click — your files are deleted automatically after processing.
Upload your PDF, enter the new values (title, author, subject, keywords) and download the updated document. Fields left empty stay unchanged.
Yes, the "Remove all metadata" option clears every field (title, author, producer…) to anonymise the document.
Metadata include a PDF's title, author, subject and keywords, sometimes filled in automatically by the original software. Removing them lets you anonymize the document before sharing it.
No. Metadata are separate descriptive information; editing or clearing them does not affect the text or the visible pages of the document.
Yes, this tool is 100% free with no usage limits. No sign-up, no credit card and no watermark added to your documents.
Yes. Your files are processed securely and automatically deleted from our servers after processing. Nobody has access to them.