Remove excessive white space from a PDF
Automatically detects the content boundaries of each page and trims away the blank white margins. Useful for PDFs exported from design tools or spreadsheets with lots of white space. Free and local.
Choose your PDF
Drop here or click to choose
Files stay on your device — nothing is uploaded
Detects white margins on each page by rendering it and finds the content boundary. Perfect for PDFs exported from design tools with too much white space around the content.
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Your file is processed in your browser and never uploaded.
How does it work?
- 1
Choose your PDF
Drag the PDF here.
- 2
Set the padding
Choose how much white space to keep around the content.
- 3
Download
Download the trimmed PDF.
Frequently asked questions
Does this also work on coloured backgrounds?
No, detection is based on white pixels. Pages with a coloured background may not be trimmed correctly.
Is the trimming precise?
Accuracy depends on the page content. Use the padding setting to keep a small buffer.
Are my files uploaded?
No. Everything happens in your own browser. Your file never leaves your device and is not stored anywhere.
Is it free?
Yes, completely free, without watermark or account. The site is paid for by ads.
Why in the browser?
PDFrust runs entirely in your browser using WebAssembly and modern JavaScript libraries such as pdf-lib and PDF.js. Your file is never sent to a server — all processing happens locally on your device. This means your documents remain private by design, regardless of what they contain. There is no account required, no file size limit, and nothing is stored after you close the tab.
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