PDF Page Size & Orientation Converter
Change PDF pages to A4, A3, A5, Letter, Legal, Tabloid or a custom size in mm, inches or points, in portrait or landscape. Fit, fill or centre content on all pages or a range, keeping text and vector content.
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About the PDF Page Size & Orientation Converter
PDF Page Size & Orientation Converter changes the page size of a PDF in your browser. Choose A4, A3, A5, Letter, Legal or Tabloid, or enter a custom width and height in millimetres, inches or points, then pick portrait or landscape. Apply the change to every page or just a range, and decide how content is placed: Fit content scales each page to fit inside the new size, Fill page scales it to cover the page (edges may be cut), and Original size, centred keeps the content at its current size. Before you convert, a table shows each page’s original size and orientation and what it will become.
Pages are resized by placing the original page content — as vector graphics and real text — onto a new page, so nothing is turned into an image, and pages outside the range are left exactly as they were. Links, comments and other annotations cannot be scaled with the content, so the tool removes them from resized pages only if you agree; pages with fillable form fields are not resized at all. If a page uses a structure the tool cannot handle safely, it shows an error instead of producing a misleading file. Some complex PDFs may not resize identically in every viewer, and password-protected PDFs cannot be edited.
How to use
- Choose or drop a PDF.
- Pick a page size (or Custom with a unit) and an orientation.
- Choose Fit content, Fill page or Original size, centred.
- Enter a page range, or leave it blank for all pages, and review the table.
- Click Convert page size, then download the new PDF.
Key features
- A4, A3, A5, Letter, Legal, Tabloid and custom sizes in mm, inches or points.
- Portrait or landscape output.
- All pages or a selected range; other pages unchanged.
- Fit content, Fill page and Original size, centred.
- Keeps text and vector content — no rasterising.
- Before/after size table, annotation and form-field checks, and a validated output PDF.
Best practices
- Use Fit content when nothing may be cut off, such as contracts or forms printed on paper.
- Use Fill page for full-bleed designs where slight cropping is acceptable.
- Check rotated or scanned pages in the result before printing.
- Flatten fillable forms first if those pages must be resized.
- Keep a copy of the original file.
Benefits
- Print documents on the paper size you actually have.
- Standardise mixed page sizes in one file.
- Text stays sharp and searchable.
- Private and free, with no upload.
Frequently asked questions
Does resizing turn my pages into images?
No. The original page content is placed on the new page as a vector object, so text remains real text and graphics stay sharp.
What is the difference between the fit options?
Fit content scales the page down or up to fit entirely inside the new size, which may leave margins. Fill page scales it to cover the whole page, which may cut off edges. Original size, centred does not scale at all.
What happens to links and comments?
They cannot be moved and scaled with resized content. If selected pages have them, the tool asks whether to remove them from those pages. Pages you do not resize keep everything.
Why won’t it resize pages with form fields?
Fillable form fields are tied to positions on the page and to the document’s form structure. Resizing them safely is not possible here, so those pages are refused rather than producing a broken form.
Will the result look identical in every PDF reader?
In most readers, yes. Some complex PDFs — unusual structures, layers or interactive content — may display slightly differently, so check the result.
Can I resize a password-protected PDF?
No. This tool cannot edit encrypted PDFs and does not remove protection.
Is my PDF uploaded anywhere?
No. The PDF is opened and processed by local copies of PDF.js and pdf-lib running in your browser. Nothing is sent to a server, and passwords you type are used only in this tab.