Crop PDF
Trim the margins off PDF pages. Drag a box on the preview, type the margins in millimetres, or let the tool find the white margins for you, then apply it to every page or just some.
Crop PDF
Open · Drag · Crop
How to crop a PDF
Open your PDF
Drop the file onto the tool or click Choose PDF. A preview of the first page appears.
Set the crop
Drag the box or its handles, type the margins, or press Find white margins.
Crop and download
Choose which pages to crop, press Crop PDF and download.
Why use it
What this free tool does
Drag to crop
Move and resize the crop box right on the page.
Exact margins
Type top, bottom, left and right in millimetres.
Find white margins
Detects where the content starts and ends.
Every page its own
Trim each page to its own content in one go.
Choose the pages
All pages, this page only, or a range.
Content unchanged
Nothing is redrawn or recompressed.
How cropping works in a PDF
Cropping sets the visible area of each page. Viewers and printers show only what is inside the box, so wide margins disappear and the page becomes smaller.
The parts outside the box are hidden, not erased: they are still inside the file and can be restored by PDF editing software. To remove sensitive content permanently, use whiteout in the PDF Editor instead.
Tip: Cropping scanned book pages? Tick "Trim each page to its own content" to handle pages that sit differently on the scanner.
Your files stay on your device
Most online PDF sites upload your documents to their servers. Aleynray Ai does the work inside your browser instead, on your own computer or phone.
Nothing is sent anywhere, so contracts, bank statements, IDs and medical forms stay private, and there is no waiting for uploads.
- Free, with no sign-up or limits
- No watermark
- Files never leave your device
- Opens password-protected PDFs
- Works on desktop and mobile
Frequently asked questions
Does cropping delete the hidden parts?
No. They are hidden but stay in the file. Use the PDF Editor's whiteout to remove content permanently.
Can I crop just one page?
Yes. Choose "This page only", or type a range.
How does automatic cropping work?
The page is drawn, and the tool looks for the first and last rows and columns that aren't white, then adds a small border.
Will the cropped PDF print smaller?
The page size becomes the cropped size, so it prints larger on the same paper if your printer scales to fit.
Is it free?
Yes. There is no sign-up, no limit on files and no watermark.
Are my files uploaded?
No. The tool runs inside your web browser and works on the file on your own device. Nothing is sent to a server, so private documents stay private.