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Page box, content scaled

Change PDF page size

Move a document onto A4, Letter, Legal or A5 with the content scaled to fit and centred — no cropping, no stretching, text still selectable.

Resizing happens in this browser tab. Your document is never uploaded.

Short answer: drop the PDF, pick A4 or Letter, keep “scale to fit and centre”, then download. Every page lands on the new size with its aspect ratio intact, so printing does not clip an edge and text is not squashed.

Mixed page sizes are the usual reason this is needed

A merged PDF often carries pages from two sources — a Letter invoice and an A4 annex. Each page prints correctly on its own, but the print dialog scales the whole job to one paper size, so one of them comes out with a white strip or a clipped footer. Resizing makes the document internally consistent, and after that the dialog has nothing to guess.

What it will not fix

A page whose content was scanned crooked stays crooked; that is a rotation or a deskew, not a size change. And a page with content drawn far outside the media box still has that content — resizing scales it with everything else instead of trimming it.

Page size questions

What actually changes?

The page box becomes the paper size you pick. With “scale to fit” the existing content is scaled by one factor — the same for both axes — and centred, so a page designed for Letter lands on A4 without distortion and without a missing right margin.

Why not stretch the content to fill the page?

Because stretching uses two different factors and text visibly changes shape. Printing a stretched A4 onto Letter is the classic “the invoice looks slightly wrong” complaint. Fit keeps the aspect ratio and accepts a small margin instead.

When should I choose “keep original size”?

When a page is already the right size but the box around it is wrong — a scan with an odd media box. Then only the box changes and the content stays 1:1, at the cost of possibly hanging past the new edge.

Does this re-render the pages?

No. The content stream is untouched apart from a scale and a translate, so text stays selectable, vectors stay sharp and the file does not turn into images. The one thing it cannot fix is a page whose content is already the wrong shape.

Related tools

Crop PDFTrim margins before resizing.Rotate PDFFix a sideways scan first.Merge PDFCombine pages after they match.