Free Online Image Resizer — Resize Photos Without Losing Quality

Resize JPG, PNG, WebP & GIF images instantly in your browser. No sign-up, no software — 100% free and private.

Upload an image

Drag & drop your images here

or click to browse · paste with Ctrl+V · multiple files supported

JPG PNG WebP GIF

Why Thousands Use Resizo

The fastest, most private way to resize photos online — no account, no software, no limits.

Perfect Quality

High-quality bicubic interpolation keeps your images sharp and clear at any size. Adjust the quality slider to balance file size and sharpness.

Lightning Fast

Powered by the HTML5 Canvas API directly in your browser, images are resized in milliseconds — no waiting, no queues, no server round-trips.

Easy To Use

Simply upload your photo, enter a target size or percentage, and click Download. No tutorials needed — resize images in three simple steps.

Works Anywhere

Resizo runs entirely in your browser on Windows, Mac, Linux, iOS, and Android. No app to install, no plugins required — just open and resize.

Privacy Guaranteed

Your images are never uploaded to any server. All processing happens locally inside your browser — your photos stay on your device, always.

It's Free

Resizo is 100% free — no sign-up, no watermarks, no usage limits, and no hidden fees. Resize as many images as you need, completely free.

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How to Resize an Image Online

  1. Upload your image

    Click "Select Image", drag & drop your photo onto the upload area, or paste directly from clipboard with Ctrl+V.

  2. Enter a target size

    Type your desired width and height in pixels, or use the percentage slider to scale up or down. Toggle aspect ratio lock to avoid distortion.

  3. Download your resized image

    Click "Apply Resize" to preview the result, choose your output format (JPG, PNG, or WebP), then hit "Download Image" — done!

Frequently Asked Questions

Is Resizo free to use?
Yes, Resizo is completely free. There are no sign-ups, no subscriptions, no watermarks, and no hidden fees — ever. Resize as many images as you need at no cost.
Does resizing reduce image quality?
Resizo uses high-quality bicubic interpolation via the HTML5 Canvas API to minimise quality loss. You can also control the output quality (1–100%) with the quality slider when saving as JPG or WebP.
Are my images uploaded to a server?
No. All image processing happens entirely in your browser. Your images never leave your device and are never transmitted to any server, ensuring complete privacy.
What image formats are supported?
Resizo supports JPG, PNG, WebP, and GIF as input formats. You can export your resized image as JPG, PNG, or WebP with full quality control.
Can I resize images on mobile?
Yes. Resizo is fully responsive and works on any modern smartphone or tablet browser — iOS Safari, Android Chrome, and others. No app installation required.

The Best Free Image Resizer Online

Resizo is a free online image resizer that lets you resize photos without losing quality — directly in your browser. Whether you need to resize a JPG for email, shrink a PNG for your website, or scale a WebP image for social media, Resizo makes it effortless.

Unlike cloud-based tools that upload your files to remote servers, Resizo processes everything locally using the HTML5 Canvas API. That means faster results, complete privacy, and zero risk of your images being stored or shared.

Common use cases: resizing product photos for e-commerce, optimising images for faster website loading, preparing photos for social media platforms (Instagram, Facebook, Twitter), reducing email attachment sizes, and batch-preparing images for presentations or documents.