Chèn nháp lưới ô vuông
Tăng chiều rộng hoặc chiều cao trang PDF, ghép thêm một dải lề nháp 200 pt mang họa tiết kẻ ngang hoặc ô lưới.
Kéo và thả tệp vào đây, hoặc nhấp để tìm kiếm
or
Mở rộng biên trang không hao tổn để ghép lưới 200pt, dòng kẻ vở hoặc nháp bố cục Cornell vào bên cạnh lề slide.
Designed for Trust and Speed
PDFRunway handles your documents locally, keeping data secure and processing lightning-fast.
Easy to Use
Simple 3-step processes designed for speed, clarity, and non-technical users.
Fast & Reliable
High-performance local compilation keeps processing fast, secure, and responsive.
100% Secure
Your documents never leave your browser. Zero uploads, 100% client-side privacy.
Works Anywhere
Access the full suite on any browser, system, desktop, or mobile device.
Cách sử dụng
Follow these three simple steps to process your file in seconds.
Upload lecture slides
Provide the PDF textbook, slides, or study papers.
Choose margin & grid style
Pick margin expansion direction (e.g. right side for tablets) and select the grid template.
Stitch canvas & download
Click execute to generate expanded pages complete with beautiful draft grids.
Giới thiệu về công cụ này
The PDF Scratchpad Margin Extender is an essential study companion tailored for students, researchers, and professional exam candidates.
When solving practice test papers, reviewing slides, or reading academic textbooks on digital tablets, page margins are incredibly tight. Opening a separate notes app forces you to toggle screens constantly, breaking focus. Adding flat blank sheets prevents you from viewing the problem and your calculation side-by-side.
This tool rewrites page width or height dimensions in the low-level PDF structure, expanding /MediaBox margins by 200~250 pt on the right or bottom. It then overlays clean grid lines, college-ruled notebook lines, or Cornell layouts in the new margins, giving you dedicated, adjacent draft boards next to every single slide or question!
Trường hợp sử dụng
STEM Exam Preparation
Stitch grid margins next to math and physics exam questions, solving derivations right next to the question.
Language Reading Analysis
Add ruled notebook margins next to foreign language essays for vocabulary analysis and paragraph translation.
Architectural Blueprint Audit
Add empty margin spaces on the side of blueprints for engineering calculations and client review comments.
Câu hỏi thường gặp
Have questions? Find quick answers about this tool here.
Not at all. The algorithm expands the paper dimension outwards. The original content retains its layout, fonts, and resolution; we simply stretch the white space on the borders and draw grids on them.
Yes. The new PDF pages are compiled natively. Popular tablet note-taking applications like Goodnotes, Notability, Xodo, and Acrobat can write, highlight, and doodle directly in the new grid space.
We curated three subtle, eye-friendly colors (soft blue-gray, warm brown, and glowing green). The lines are thin and gentle, serving as guides without distracting you from the original page content.