Thêm nhãn trang
Thiết lập nhãn trang tùy chỉnh (ví dụ: I, II cho lời mở đầu, 1, 2 cho nội dung). Cải thiện điều hướng trình đọc.
Tải lên PDF
Giới thiệu về công cụ này
Add Page Labels allows you to inject custom page labeling metadata (/PageLabels) into your PDF's root Catalog dictionary. This customizes the labels displayed in professional PDF reader navigation sidebars and top page number jump panels (e.g. using Roman numerals for front matter, decimal sequences for main body, or custom prefixes such as A-0, A-1 for technical subsections).
Supports combining multiple custom rules seamlessly. Crucially, we've built a highly optimized disjoint-range slicing algorithm: even if you declare complex alternating patterns (e.g., odd pages style A, even pages style B), the tool will elegantly dissect and compose boundaries to ensure proper standard-compliant display without leaking formats into unmapped pages.
All operations are processed entirely inside your local browser sandbox, securing absolute data privacy.
Practical guidance before you use Thêm nhãn trang
Best for real document workflows
Use Thêm nhãn trang when you need a quick browser-based result without creating an account or sending routine documents through an unnecessary upload workflow. Academic Thesis Formatting is a common example: Set lowercase Roman numerals (i, ii, iii) for introductory front matter and transition to decimal for main chapters.
Privacy and file handling
EasyPDFNex prioritizes local processing in your browser. That means supported PDF operations run on your device, not in a public cloud queue. For sensitive files, review the output before sharing it, close the browser tab after downloading, and avoid processing documents you are not authorized to edit.
Quality checks after processing
After you preview and download, open the result and check page order, text readability, signatures, links, and form fields. If the source file is scanned, encrypted, very large, or damaged, try a related workflow such as page numbers, organize pdf, merge pdf before repeating the task.
Start with a clean source file whenever possible. For Thêm nhãn trang, the first step is usually "Upload PDF Document": Provide the target PDF document you wish to label. This simple preparation step prevents most failed exports, missing pages, and formatting surprises.
Editorial review note
This guidance is maintained by the EasyPDFNex editorial team and reviewed for practical PDF workflow accuracy. Tool pages are written to explain when a feature is useful, what to check before download, and where browser-based processing has limits.
Cách sử dụng
Upload PDF Document
Provide the target PDF document you wish to label.
Configure Labeling Rules
Add one or more rules specifying page ranges (e.g., "1-5", "odd", or comma-separated lists), prefix, style, and starting sequence.
Preview and Download
Review the live page label list preview below, then compile and download your updated PDF document.
Trường hợp sử dụng
Academic Thesis Formatting
Set lowercase Roman numerals (i, ii, iii) for introductory front matter and transition to decimal for main chapters.
Engineering Blueprint Prefixes
Attach subsystem abbreviations (e.g., "A-1", "M-5") as page label prefixes, letting teams search and locate pages in seconds.
Custom Alternating Layouts
Apply highly specific page range indexing to odd/even sequences or non-contiguous sections with maximum freedom.
Câu hỏi thường gặp
What are page labels vs page numbers?
Ordinary page numbers are visual text blocks rendered directly on the paper canvas (visible when printed). Page labels, however, are structural metadata injected into the PDF catalog. They control what is displayed underneath thumbnails and in the page lookup box inside software like Adobe Acrobat or Apple Preview.
What happens if I leave the Page Range empty?
Leaving the page range empty causes the rule to apply globally to all pages of the document.
How are overlapping rules handled?
Rules are evaluated sequentially in the order they are listed. If a page range of a later rule overlaps with an earlier one, the later rule takes priority and overrides the label for that page.