Crop PDF to a Specific Size
Crop a PDF to an exact size or a fixed aspect ratio. The readout under the first-page preview shows the crop in points and inches, Shift and the arrow keys resize it in 10 pt or 1 pt steps, and the ratio lock keeps square, A4, or Letter proportions. Apply it to every page or just the first. All processing runs in your browser.
Drop a PDF here or click to browse
How it works
Drop a PDF and pdfjs-dist renders its first page to a canvas. Select a fixed aspect ratio (or leave it free) and drag the rectangle to the area you want to keep. On apply, the rectangle is converted to PDF coordinates with pdf.js's page transform. By default each matching page is rebuilt as a 216 dpi image of that area; with Keep text selectable it is applied to each page as both the MediaBox and CropBox via pdf-lib.
Processing runs in your browser
All cropping happens inside your browser tab. The preview is rendered with pdfjs-dist and the cropped PDF is written by pdf-lib in memory; our servers are not involved at any point. You can verify this yourself in your browser's DevTools Network tab.
Related operations
To reduce file size after cropping, try compress PDF. To rotate pages before cropping, use rotate PDF. For per-page cropping, split first with split PDF.
Frequently asked questions
- How do I crop a PDF to an exact size, such as 6 × 9 inches?
- Choose Free, drag a corner until the readout under the preview is close, then Tab to the crop area and hold Shift with the arrow keys to resize in 10 pt steps, or Shift and Alt for 1 pt steps. The readout shows the size in points and inches (72 pt = 1 inch), so 6 × 9 inches reads 432 × 648 pt. The crop cannot be larger than the page itself.
- Which aspect ratios are available?
- Free (no aspect lock), 1:1 square, A4 portrait, A4 landscape, US Letter portrait, and US Letter landscape. Choose Free to crop to any rectangle you like.
- Can I crop to a precise pixel size?
- The preview is shown in pixels but the PDF stores coordinates in points (1/72 inch), and the crop size is shown in points under the preview. A crop edge dragged to the edge of the preview snaps to the exact page edge. For pixel-precise output, convert the cropped PDF to an image afterwards.
- Will all pages be cropped to the same rectangle?
- With All pages (the default), every page with the same size, position, and orientation as the first page is cropped; the tool tells you how many other pages it left uncropped. If you only want the first page cropped, choose First page only before clicking Crop and download.
- Does the original content get deleted?
- With the default, Remove the cut-off area, yes: the cropped pages are rebuilt as images of the selected area, so the rest of each page is not in the file. With Keep text selectable, no: only the page boxes change, and the original content stays in the file, where another tool can recover it.
Last reviewed September 30, 2026
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