About resize PDF pages
The word resize means two unrelated things for PDFs and conflating them wastes a lot of time. This tool changes page dimensions: the media box rectangle that determines how large each sheet is. It does not reduce the number of bytes in the file — that is compression, which re-encodes images and prunes redundant objects, and lives in a different tool. Here each page is rebuilt at the target dimensions with the original drawn onto it under a transformation matrix, so a page can be scaled from 25% to 400% with text and vector art staying perfectly sharp at every step. The scale control is what separates this page from the fixed-size converters: you can enlarge content to 120% on the same paper to improve legibility, or shrink it to 80% to create a margin for binding or annotation, without switching to a different standard size at all.
How to resize PDF pages
- 01
Open the PDF
Drop in the document whose page dimensions you want to change.
- 02
Pick a target sheet
Choose the standard size the pages should be rebuilt at.
- 03
Set the content scale
Leave it at 100% to keep true size, raise it for legibility, or lower it to create a margin.
- 04
Resize and download
Press the action button and save the document with its new page geometry.
What this tool does
- Free scale control from 25% to 400% alongside standard target sizes
- Shrink below 100% to create binding or annotation margins
- Enlarge above 100% for legibility without changing paper size
- Vector content stays vector at every scale factor
- Page geometry changes are written into the file, not applied at print time
Limitations worth knowing
Every PDF tool has constraints. Stating them plainly is more useful than discovering them halfway through your work.
- This changes page dimensions, not file weight. Use Compress PDF to reduce bytes.
- Scaling above 100% does not add detail to embedded photographs; their effective resolution drops proportionally.
- Content is scaled as a unit and never reflowed, so line breaks and layout stay exactly as they were.
- Scale factors that push content past the sheet edge will clip it in centre mode.
How your file is handled
This tool runs entirely inside this browser tab. When you choose a file, your browser reads it from your own disk and hands the bytes to JavaScript running on this page — no network request carries your document anywhere. You can confirm that yourself: open your browser’s developer tools, switch to the Network panel, and run the tool. You will see no upload.
Nothing is stored after the fact. Closing or reloading this tab discards the file, the result and everything derived from them, because none of it ever left your machine. Read how local processing works.
Questions about resize PDF pages
Will this make my PDF file smaller in megabytes?
No. Page dimensions and file weight are unrelated. Resizing rewrites geometry while storing the same fonts and images, so the byte size is roughly unchanged — Compress PDF is the tool for that.
How do I add a binding margin?
Keep the same target size and set the content scale to around 90%. The page stays A4 or Letter while the content shrinks slightly, leaving white space all round for binding or notes.
Is there any quality loss from repeated resizing?
Text and vector art are unaffected because each pass only composes transforms. Raster images are never resampled either, though enlarging them lowers their effective print resolution.
How is this different from Crop PDF?
Resizing scales the whole page onto new dimensions, keeping all content. Cropping changes the visible rectangle instead, hiding the material outside it rather than scaling anything.
Tools that pair with this one
- PDF Page Size ChangerRebuild your document on a different paper size.
- Compress PDFMake a PDF smaller by re-encoding its images and cleaning up its internals.
- Crop PDFTrim away margins, scanner borders and dead white space.
- Convert PDF to A4Put your document onto standard A4 pages.
- Convert PDF to A3Enlarge your document onto A3 sheets for large-format printing.
- Convert PDF to LetterPut your document onto US Letter pages.
Read more about this
- How to merge PDF filesJoining documents copies pages into a new PDF rather than re-rendering them. This guide covers the actual order controls and the document-level features that a merge cannot promise to preserve.5 min guide
- How to split a PDF into separate filesSplitting turns one document into many. This guide explains the three split methods, how to pick between them, and what each output does and does not inherit.5 min guide
- How to delete pages from a PDFDeleting pages rebuilds the document from the pages you kept. Lossless for the survivors, and not the size fix people expect it to be.4 min guide