Upload a PDF to change its page size

Resizing changes the physical page dimensions, such as converting a 1440 × 5834 point page to A4. Compressing reduces the file size in megabytes but normally does not change the page dimensions at all. They solve different problems and can be used together.

Yes. Choose A4 and use Fit all content. The whole page is scaled down proportionally until it fits inside A4, so nothing is cropped and the layout stays exactly as it was — only smaller.

No. The page is treated as one unit: text, images, vectors, tables and spacing are transformed together by a single matrix, so their relationship to each other never changes. Fit all content is the safest option because it also guarantees nothing falls off the page.

It usually comes from an export that had no page size to work from — a webpage printed to PDF, a screenshot, a long scanner pass, a design application with a custom artboard, a presentation, or a badly configured print process. The page is valid, it is just not a document size any printer or signing portal expects.

Yes. You can resize one page, a hand-picked selection, a range such as 1-3,6,8-12, only the odd or even pages, only the pages with unusual dimensions, or every page matching the size of the page you are viewing. Pages you do not select are copied through untouched.

Yes. Pick a target size with Pages set to All pages. Leave orientation on "Match each page" and every page becomes, for example, A4 while a landscape page stays landscape. Choose Portrait or Landscape instead to force them all one way.

Fit all content and Stretch never crop. Fill the whole page, Change page border only, and Crop to selected size can crop, depending on the sizes involved. Whenever that happens the preview shows the lost area faded and marked, the setting panel says "Will be cropped", and the export summary counts the affected pages. Cropping is never applied silently.

Yes. Choose None, Narrow (5 mm), Normal (10 mm), Wide (20 mm) or set custom top, right, bottom and left values in millimetres, centimetres, inches or points. The margin boundary is drawn as a dashed line in the preview so you can see it before you export.

Millimetres, centimetres, inches and PDF points. One inch is 72 PDF points and 25.4 millimetres, so A4 at 210 × 297 mm becomes 595.28 × 841.89 points. The converted point size is shown as you type, and switching units converts the numbers rather than changing the page.

No. Pages are never converted to images. The original content stream is reused verbatim and wrapped in a transformation matrix, so text stays selectable and searchable, embedded fonts stay embedded, vector art stays vector, and images keep their original compression at any zoom level.

Yes. Every annotation rectangle, link area, highlight, ink stroke and form widget is moved by exactly the same matrix as the page content, so the interactive layer and the visible layer cannot drift apart. If an annotation ends up outside the new page boundary, you are told before you download.

Changing the page dimensions modifies the PDF, which may invalidate an existing digital signature. Signed documents are detected on open and flagged before you export. We do not claim signatures always survive — if the signature matters, resize first and sign afterwards.

No. Resizing changes the page width and height. Rotating changes the orientation of the page or its content. They are separate controls here: changing the page orientation swaps width and height, and a separate "Rotate the content to match" option turns the content a quarter turn.

The visible CropBox is what gets resized, because that is what a reader shows you. The exported page also carries a clip to the original CropBox, so any content that was hidden outside it stays hidden instead of suddenly appearing on the new page.

No. This tool runs entirely in your browser. Your PDF is read, analyzed, previewed and rewritten on your own machine and never leaves it, so there is nothing to store, nothing to delete and nothing to leak.

You can resize PDFs up to 10MB and 100 pages. Long documents are processed page by page with a progress bar you can cancel at any time. Pages larger than 200 inches on an edge are refused, because that is the limit of the PDF format itself.

No. US Letter is 216 × 279 mm (8.5 × 11 in, 612 × 792 pt) and A4 is 210 × 297 mm (8.27 × 11.69 in, 595 × 842 pt). A4 is narrower and taller, and the two share no aspect ratio, so neither converts into the other without white space or a crop.

Open the file, choose A4, and pick Fit all content. The page is scaled to A4 and the ratio difference appears as a thin band of white space rather than a clipped line. The same steps in reverse convert A4 to Letter.

Choose A3 with Fit all content. Because the A series keeps a constant √2 ratio, A4 to A3 is a clean 141% enlargement with no leftover white space — and A4 to A5 is the same step in reverse, a 71% reduction.

No. Acrobat Reader cannot change page size at all, and in Acrobat Pro the feature is buried in Print Production → Preflight → “Scale pages to specified size”. This tool does the same job in the browser with no licence and no install.

Not for text and vector content, which scale losslessly because they are drawing instructions rather than pixels. Embedded images are not re-encoded either — scaling down effectively raises their DPI, while enlarging a low-resolution scan spreads the same pixels further and can look soft.

No. Resizing changes the page dimensions, not the megabytes, and a resized file can even be marginally larger because of the added transform. Use Compress PDF when you need a smaller file — the two operations are independent and safe to run in sequence.

Usually the “Choose paper source by PDF page size” option in the print dialog, which lets the driver pick a tray from each page’s dimensions. Untick it, or convert the pages to Letter here first so every page reports 612 × 792 points.

The page is larger than the paper, so the printer clips it — classically a Legal page sent to a Letter tray. Resize the pages to the paper you are printing on, and print at Actual size rather than letting the dialog rescale them.

Actual size prints one PDF point as 1/72 inch, so measured content stays true. Fit to page rescales every page to the printer’s printable area, which is convenient for text but silently changes the scale of anything measured, such as a drawing.

Yes, and that is the trap. An A1 drawing printed on A3 is halved, so a 1:50 drawing becomes 1:100. Resize deliberately and note the new ratio on the sheet, rather than letting a print dialog decide it for you.

It depends on the jurisdiction: universities outside the US generally require A4, while US courts require Letter and commonly reject Legal outright. Both are one preset here, and the exported dimensions are shown in points so you can check them against the specification.

Enter the trim as a custom size in inches and resize. Print-on-demand platforms match trim exactly rather than approximately, so verify the reported page dimensions against their specification — and note that this tool does not add bleed or set a TrimBox.

They are the five nested rectangles a PDF page can define. MediaBox is the physical sheet and is what this tool changes; CropBox is the visible region a reader displays; BleedBox, TrimBox and ArtBox describe the print production, finished and content areas. Every box sits inside the MediaBox.

Use the pdfwrite device with a fixed page size and fit-to-page, for example -sDEVICE=pdfwrite -sPAPERSIZE=a4 -dFIXEDMEDIA -dPDFFitPage. It works well for downsizing in a script; pdfjam is the LaTeX-world equivalent, though it can drop links and bookmarks.

Exactly 72. The default user-space unit is 1/72 inch, so a PDF point equals 0.3528 mm and A4’s 210 × 297 mm is 595.28 × 841.89 points. Page dimensions are stored in these units, which is why size tables list them alongside millimetres and inches.