Resize PDF page size

Fit every page of your PDF to A4, Letter, Legal, A5 or A3 — clean, consistent and print-ready. Free, instant and 100% in your browser.

📁 Drop a PDF here, or click to choose — fit to A4

Every page is scaled to fit the chosen page size, centred and keeping its proportions.

Standardise your PDF page size

PDFs assembled from scans and photos often end up with mixed or unusual page sizes, which can print badly or be rejected by upload portals. This tool resizes every page to a standard size — A4 is the default for India — scaling each page to fit while keeping its proportions, so nothing is stretched.

Resizing changes the page dimensions; to reduce the file weight for an upload limit, use Compress PDF or a target like 200 KB. You can also merge, split and do more with the full PDF toolkit — all in your browser.

Frequently asked questions

How do I resize a PDF page size?
Choose the page size you need (A4, Letter, Legal, A5 or A3) and upload your PDF. The tool scales every page to fit that size, centred and keeping its proportions, then lets you download the resized PDF.
What is the difference between resizing a PDF and compressing it?
Resizing changes the page dimensions (e.g. making every page A4), while compressing reduces the file size in KB/MB. To make the file smaller for an upload limit, use our Compress PDF tool instead.
Will resizing distort my pages?
No. Each page is scaled to fit the new size while keeping its aspect ratio, so content is never stretched — it is centred with even margins if the proportions differ.
Why standardise a PDF to A4?
Mixed or unusual page sizes can print badly or get rejected by portals. Fitting everything to A4 (or Letter) gives a clean, consistent document that prints and uploads reliably.
Is it free and private?
Yes — completely free with no sign-up, and the PDF is processed entirely in your browser and never uploaded.

More free PDF tools

Resize, merge, split and compress — all in your browser.

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By Narender Chaudhary, Editorial & Product Lead · Updated June 2026

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