Resize Image Online Free

Change your image dimensions to any size. Enter width, height, or both. Aspect ratio lock keeps your image proportional. Free, instant.

Drop your image here

JPG, PNG, WebP — Max 10MB

New Dimensions

Width (px)

Height (px)

Keep aspect ratio

Your image is deleted immediately after processing. Never stored or shared.

How to Resize Image

Upload ImageUpload your image file — JPG, PNG, or WebP (up to 10MB)

ConfigureEnter your target width, height, or both. Enable aspect ratio lock to avoid stretching

DownloadDownload your resized image at the exact dimensions you need

Resize Image Online is a free online tool that works entirely in your browser — no signup, no data uploaded, no limits.

Change Image Size to Any Dimension — Pixel Perfect

Every platform has different image dimension requirements. Instagram wants 1080×1080 for square posts. LinkedIn profile photos need to be 400×400. Your website hero image might need to be exactly 1920×600. Resizing images manually in Photoshop takes time you often do not have. Tooliby's free image resizer lets you set the exact pixel dimensions you need and download the result in seconds.

The aspect ratio lock is on by default — enter just the width and the height adjusts automatically to keep the image proportional. This prevents the stretched, distorted look that happens when you change both dimensions independently without accounting for the original ratio. Turn it off when you need a specific canvas size regardless of distortion.

Common Image Resize Use Cases

Resize photos for website upload — most CMS platforms have maximum dimension limits
Scale down high-resolution images for email attachments
Match exact pixel requirements for social media profile pictures
Prepare product images for e-commerce stores with specific thumbnail sizes
Resize screenshots for documentation and tutorials

Frequently Asked Questions

Enlarging an image beyond its original size always reduces quality — you cannot add pixels that were never there. Reducing an image size generally produces sharp results. Always work from the highest resolution original you have.

When enabled, entering one dimension automatically calculates the other to keep the original proportions. This prevents stretching. Disable it only when you need a specific canvas size.

Yes, but upscaling introduces pixelation. The tool uses high-quality Lanczos-style filtering to minimize this, but there is a physical limit to how much an image can be enlarged cleanly.

JPG, PNG, and WebP. The output format matches the input format.

Up to 10MB per image.

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