ImageResizer

Image Resize

Resize images by pixels or percentage — processed in your browser, no server uploads

Drop image here or click to browse

Supported formats: JPEG, PNG, WebP, AVIF

You can also paste clipboard images with Ctrl+V

Pixels & Percentage

Enter exact pixel dimensions or scale by percentage. Aspect ratio lock prevents image distortion.

Social Media Presets

Apply common social media sizes instantly — Instagram, YouTube, Twitter, and Facebook presets included.

Completely Private

All processing happens in your browser. Images are never sent to a server, and no data is stored.

How It Works

Resize your image in 3 simple steps

1

Upload Image

Drag & drop or select the image you want to resize.

2

Set Dimensions

Choose pixel dimensions or percentage, set format and quality.

3

Download

Download your resized image. Compare original and new dimensions.

Frequently Asked Questions

Find answers to your questions

Are images sent to a server?
No. All image processing happens 100% in your browser. WebAssembly-based codecs run locally, so images are never sent to or stored on a server.
How does aspect ratio lock work?
With aspect ratio lock enabled, changing either width or height will automatically calculate the other dimension, keeping your image proportions intact.
What sizes do the presets use?
Instagram 1080x1080, YouTube 1280x720, Twitter 1200x675, and Facebook 1200x630 — the most common social media dimensions.
What formats can I save to?
You can save as JPEG, PNG, WebP, or AVIF. Each format has different characteristics — choose based on your needs.
Can I upscale an image beyond its original size?
Yes, but upscaling beyond the original dimensions will reduce quality. Set percentage above 100% or enter pixel values larger than the original.