How do I change a PDF's page size to A4 or US Letter?

Upload your PDF, choose “Fit to A4” or “Fit to Letter” as the mode, then press “Resize & download”. Each page is scaled to fit the target sheet while preserving its aspect ratio and is centered on the page.

Can I scale a PDF up or down to a custom size?

Yes. Select “Scale by percentage” and enter a factor (e.g. 50% for half size, 150% for 1.5x). Each page's dimensions and contents are scaled by that factor.

Is my PDF uploaded to a server?

No. Everything runs entirely in your browser (client-side). Your PDF is never uploaded to a server or sent anywhere.

Does resizing reduce text or image quality?

Text and vector content are redrawn without loss, so they stay crisp even when scaled up. Images already embedded in the PDF are limited by their original resolution.

Resize PDF

PDF tools

Upload a PDF and fit every page to A4 or Letter, or scale by a percentage. Everything runs in your browser — your file is never uploaded.

What is this PDF resize tool?

A free, browser-based tool that changes the page size of a PDF — fit every page to A4 or US Letter, or scale all pages up or down by a percentage. Nothing to install, no sign-up, and because everything runs locally in your browser, your file is never uploaded to a server.

How to resize a PDF

Upload your PDF by dragging it in or clicking the upload area.
Choose a mode: fit every page to A4, fit to US Letter, or scale by a percentage.
For percentage mode, type the scale factor (e.g. 50 to halve, 150 to enlarge).
Press “Resize & download” to get the resized PDF.

Common use cases

Normalizing a PDF to A4 or Letter before printing so every page fits the paper.
Shrinking an oversized scan or poster down to a standard page size.
Unifying a document made of mixed page sizes into one consistent size.

Why use this PDF resize tool

Works on Windows & Mac

Runs in any modern browser, so it works the same on Windows, macOS, Linux, and even phones and tablets — no OS-specific app needed.

No install, fully online

There's nothing to download or set up. Open the page and start right away — no software, no plugins, no sign-up.

Safe & private

All processing happens locally in your browser. Your files are never uploaded to a server, so confidential documents stay on your device.

Fast — no upload wait

Because files don't travel to a server and back, there's no upload or queue. Processing starts instantly and finishes in seconds.

Print-ready quality

The original layout, fonts, and image resolution are preserved, so the result looks right on screen and when printed.

Simple to use

A clean, intuitive interface gets the job done in a few clicks — no manuals and no PDF expertise required.

PDF resize tool vs. other PDF tools

Most online PDF services — including Adobe Acrobat online, iLovePDF, Smallpdf, and Canva — upload your files to their servers, and many cap free usage or require an account. Desktop software like Adobe InDesign needs a paid install. This tool runs entirely in your browser: your files are never uploaded, there's no sign-up, and it's completely free with no usage limits.

Tool / service	Where files are processed	Free usage	Sign-up	Install	Platforms	Price
This tool	In your browser (never uploaded)	Completely free, no limits	Not required	Not required	Windows / Mac / Linux / mobile (browser)	Free
Adobe Acrobat (online)	Uploaded to servers	Sign-in required to keep using; feature limits	Required for continued use	Not required (web)	Windows / Mac / iOS / Android	≈ $19.99+/mo
iLovePDF	Uploaded to servers (deleted ≈2h)	Size & batch limits	Needed for some features	Not required (web)	Web / Windows / Mac / iOS / Android	≈ $7+/mo
Smallpdf	Uploaded to servers (deleted ≈1h)	2 tasks per day	Often prompted / required	Not required (web)	Web / Windows / iOS / Android (no Mac app)	≈ $10+/mo
PDF24 Tools	Uploaded to servers (online, ads)	Completely free	Not required	Not required (web)	All OS (browser)	Free
Canva	Cloud processing	Free tier (watermarks / asset limits)	Required	Not required (web)	Web / Windows / Mac / iOS / Android	≈ $15+/mo
Adobe InDesign	Desktop (local)	No free version (trial only)	Required	Required	Windows / Mac	≈ $22.99+/mo
PDFGear	In your browser (online tool)	Free (100MB limit online)	Not required	Not required (web)	Web / Windows / Mac / iOS / Android	Free

Pricing and free-tier limits are approximate and based on publicly available information as of June 2026; check each provider for current details.

Resizing PDF pages, tool by tool

Resizing PDF pages, tool by tool
Tool	Free usage	Files leave your device
This tool	Completely free, no limits	No — processed in your browser
iLovePDF (free)	Size & batch limits	Yes — uploaded to servers
Smallpdf (free)	2 tasks per day	Yes — uploaded to servers
Adobe Acrobat (online)	≈ $19.99+/mo	Yes — uploaded to servers

Related tools

FAQ

Operated by

Tools by Timothe AI is a suite of free tools built and operated by unbounded pioneering inc, the company behind Timothe AI.

Ryosuke SuzukiFounder & CEO

Founder & CEO of Unbounded Pioneering Inc., the company behind Timothe AI, and an expert in machine learning and AI product development. He began his career in machine learning research at a university laboratory, then designed and built large-scale products as a software engineer at PLAID, Rakuten, and Recruit, while also driving new business development. Now specializing in generative AI and AI products, he works across both engineering and business development, and is a named inventor on multiple granted patents in web technology.

Named inventor on granted patents JP6887648 & JP7480958 · Patent pending on Timothe AI technology

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