Resize PDF pages to A4, Letter, Legal, or custom dimensions in seconds. No account needed, no file uploads, no limits.
PDF files
Resize a PDF online for free: open it here, pick a page size — A4, US Letter, US Legal, A3, A5, Tabloid or your own size in millimetres or inches — and download the resized PDF. The resize runs in your browser, so the file is never uploaded, and there is no sign-up, watermark or daily limit; only your device's memory limits the file size. Content is scaled to fit the new page or kept at its size and centred, on every page or only the pages you choose, and text stays sharp and selectable. Want a smaller file in MB rather than a different page size? Use Compress PDF.
How it works
Three steps. Pick a page size, choose a content scaling mode, preview the result, and download — all in your browser.
Drop your document onto the page or click to browse. Your file loads directly into your browser's memory — nothing is sent to a server at any point during this step.
Pick a preset page format (A4, A3, A5, US Letter, US Legal, or Tabloid) or enter custom width and height dimensions in millimetres or inches. Set the orientation (auto, portrait, or landscape) and select a content scaling mode: scale to fit (shrink or expand the content proportionally to the new page) or center (keep the original content size and place it in the middle of the new page). A live preview shows exactly how each page will look before you commit.
Click Download and your resized PDF is saved in seconds. No waiting and no email required. Text and vector graphics stay sharp because the resize runs without rasterizing your document, and your file never leaves your device.
Preset and custom page sizes, content scaling modes, a live preview, and selective page resize — all running entirely in your browser, with text and vector graphics kept sharp.
Resize any PDF to A4, US Letter, US Legal, A3, A5, or Tabloid with one click, or enter exact custom dimensions in millimetres or inches. Whether you are preparing a document for international printing or fitting a report into a company template, the page size options cover every common use case without requiring any desktop software.
Changing only the page canvas can leave your content floating in the wrong position. OneClickPDF gives you two content scaling modes: scale to fit (shrink or expand content proportionally to the new page) or center (keep the original content size and centre it on the new page).
Before you download anything, a live preview shows exactly how your PDF pages will look at the new size. Spot any layout issues, adjust your scaling mode, and confirm the result all before hitting the download button.
Need to resize only a few pages in a multi-page document? Switch to per-page mode and select specific pages, then apply the new size only to those pages. The rest of the document stays untouched at its original dimensions.
Set each target page to auto (match the original page's orientation), portrait, or landscape. Mix a portrait source into a landscape template, or standardize a set of mixed-orientation pages — without redesigning anything in the original software.
OneClickPDF runs the entire resize operation inside your browser using client-side processing. Your file is never transmitted anywhere. Text stays selectable, vector graphics stay crisp, and your document remains private from start to finish.
Privacy-first by design. Other tools send your file to their servers the moment you hit upload. OneClickPDF never does. The entire resize operation runs inside your browser using client-side PDF processing. No third party ever sees your document, which matters when you are working with contracts, financial reports, medical records, or anything confidential.
Content scaling modes that fix alignment. Simply changing the page canvas leaves your text and images misaligned. Content scaling modes solve this properly. Scale to fit shrinks or expands your content to match the new page proportionally. Center keeps your content at its original size and positions it in the middle of the new page. These modes handle virtually every real-world resize scenario without any manual adjustments.
See the result before you download. The live resize preview shows you exactly how your pages will look at the new dimensions, with your chosen scaling mode applied. You are not guessing. If the layout does not look right, switch the scaling mode and the preview updates instantly.
Truly free, with no hidden limits. There is no daily cap, no hourly restriction, no file count limit, and no watermark. Resize as many PDF files as you need, at any time of day, for free.
Why choose ours?
Every competitor uploads your file to their server. Ours resizes entirely in your browser — preserving text selectability and vector quality without rasterization.
| Feature | Ours | SmallPDF | iLovePDF | Sejda | PDF24 | Adobe |
|---|---|---|---|---|---|---|
| Free & unlimited | 2/day | Limits | 3/hr | Pro | ||
| Files stay in browser | ||||||
| No account needed | ||||||
| Preset page sizes | ~4 | ~4 | ||||
| Custom dimensions | ||||||
| Content scaling modes | ||||||
| Selective page resize | ||||||
| Orientation control | ||||||
| Live resize preview |
Competitor information was accurate at time of publication and may have changed.
Finished resizing? compress your PDF to shrink the file size for email — or crop margins, convert to JPG, or merge it with others. All tools run in your browser, no account required.
Compress PDF
Shrink large PDFs for email, web upload, or cloud storage. Our compression preserves image clarity and text sharpness — you choose the quality level.
Crop PDF
Trim margins or resize page content across your PDF.
Image to PDF
Combine JPG, PNG and WEBP images into one PDF, one page per image. Drag them into order and fit each page to its picture or use A4, Letter or Legal.
PDF to JPG
Save every PDF page as a JPG at 150, 300 or 600 DPI with adjustable quality. A one-page PDF downloads as a JPG, a longer one as a ZIP.
