KissPDF Free Online PDF Cropper
Drag a selection to trim unwanted PDF margins, give each page its own crop area, or remove surrounding blank space automatically.
Focus each PDF page on the useful content before sharing, printing, or combining it with another document.
The PDF is inspected and rewritten in browser memory on your device.
Use the free PDF cropper in four steps.
Choose one PDF from your device.
Drag a selection or use automatic blank-margin detection.
Navigate between pages and confirm the blue crop boundary.
Create a new PDF with the selected page boundaries.
Practical guide
Crop PDF files online for free. Drag a selection to trim margins, use separate crop areas for individual pages, or remove surrounding blank space automatically.
Crop to selection displays one large PDF page at a time. Move or resize the blue boundary, then use one relative crop area for the whole document or give each page its own selection. Page navigation lets you edit and check a multipage PDF before creating the output.
Auto crop renders each page locally to identify its background and visible-content boundary. Every page receives its own detected crop box, which is useful when scans have different amounts of white space. A small safety gap remains around detected content to reduce accidental clipping.
Page rendering is used only to preview the PDF and detect blank space. The downloaded document changes PDF page boxes instead of replacing ordinary text and vector graphics with screenshots, so normal content remains sharp when zoomed or printed.
Cropping changes which portion of a page a PDF viewer displays. Content outside the visible boundary may remain recoverable with specialist PDF software, so use a dedicated redaction workflow when confidential information must be permanently removed.
Clear answers based on how this tool actually works.
Select a PDF, drag the blue crop area, choose All pages or Current page, and click Crop PDF.
Yes. Choose Auto crop. KissPDF detects the visible content boundary independently on every page and keeps a small safety gap.
Yes. Choose Current page, navigate through the document, and adjust each page independently. All pages are processed together when you download, while unedited pages remain full size.
No intentional rasterization is used for the output. Rendering is used for the preview and automatic boundary detection only.
No. Cropping is not secure redaction, and content outside the displayed page boundary may still be recoverable.
No. Previewing, margin detection, and PDF rewriting run locally in your browser.