PDF Editor HQResize PDF Online Free - Change Page Size to A4 or Letter
Resize PDF online free — scale pages to A4, Letter, Legal or A5, or by percentage. Content is scaled and centered, orientation preserved. Processed in your browser, never uploaded.
Drop a PDF here or click to upload
PDF · processed in your browser, never uploaded
Done with Resize PDF? Try these next
Hand-picked tools that pair well with Resize PDF. Keep going without losing your file.
Crop PDF
Crop PDF pages online — drag a crop box on the preview and trim margins or unwanted edges from every page. Processed in your browser.
Try it nowCompress PDF
Shrink PDF file size for email and form uploads with quality presets. Free with no daily task limit, no signup and no watermark; files processed securely on our server and auto-deleted.
Try it nowRotate PDF
Rotate every PDF page or pick individual pages to turn 90°, 180° or 270° with visual thumbnails. Free, no signup, no watermark; files processed securely on our server and auto-deleted.
Try it nowOrganize PDF
Drag PDF pages to reorder, and click to delete the ones you do not need — reorder, extract and remove in one place. Free, no signup, no watermark; files processed securely on our server and auto-deleted.
Try it nowMerge PDF
Combine two or more PDF files into one, drag to reorder. Free with no daily task limit, no signup and no watermark — files are processed securely on our server and deleted automatically, never stored or sold.
Try it nowImage to PDF
Combine multiple JPG, PNG, WEBP or HEIC images into a multi-page PDF. Drag to reorder, preview before download.
Try it nowFrequently Asked Questions
Upload the PDF and choose A4 — every page is scaled proportionally and centered on an A4 page, keeping its orientation. Then download the resized file. Letter, Legal, A5 and custom percentage scaling work the same way.
usageResizing changes page dimensions, not primarily the byte size. To shrink the file for email or upload portals, use Compress PDF — or do both: resize first, then compress.
featuresNo — pages scale proportionally to fit the target and are centered, so nothing is stretched. Landscape pages automatically get a landscape target.
qualityPrint shops, government portals and archives often require A4 or Letter. Mixed-size PDFs (e.g. merged from different sources) print badly until normalized to one size.
usageNo — resizing runs entirely in your browser with pdf-lib; the document never leaves your device.
privacyHow Resize PDF helps you get it done
Real problems it solves every day — for businesses, creators, and everyday tasks. Find the use case that fits you and start in seconds.
Normalize Merged Documents to One Size
A PDF merged from different sources prints badly with mixed page sizes — resize everything to A4 or Letter first.
Meet Portal and Print-Shop Requirements
Government portals, journals and printers frequently mandate an exact page size — convert your PDF to A4/Letter/Legal to pass validation.
Shrink Oversized Architect and Poster Pages
Scale down A1/A2 exports to A4 handouts, keeping proportions intact for review copies.
Enlarge Small Pages for Readability
A5 booklets and receipts scale up to A4 cleanly for annotation, filing or accessibility.