Resize image online free for web, email, and forms. Set exact width and height in pixels or scale by percentage, preview the result, and download—standard processing works on your device.

Resizing down is safe; enlarging small images beyond native resolution looks soft because pixels are interpolated.

Pair resize with compression when portals enforce both dimension and file-size caps.

How to use this tool

Upload an image, enter target width and height (or lock aspect ratio), preview, and download the resized file.

Worked example

Example: shrink a 4000×3000 phone photo to 1200×900 for a blog hero—faster page loads and smaller email attachments.

When to use this

Meeting CMS or social media dimension requirements.
Shrinking email attachments on mobile data.
Preparing thumbnails from large originals.

Common examples

4000×3000 phone photo → 1200×900 for a blog content column at 2× retina width.
LinkedIn headshot 2000×2000 → 800×800 avatar export.
Banner 2400×800 → 1200×400 for faster email newsletter load times.
3000×2000 blog hero → 1600×1067 for faster LCP while keeping 3:2 ratio.
Square logo 1024×1024 → 256×256 favicon source before Favicon Generator.

What people search for

resize image
scale image online
change image dimensions
resize photo for web
image resizer pixels

Common mistakes

Upsampling tiny logos for print.
Stretching without locking aspect ratio.
Saving as JPEG repeatedly and adding artifacts.

resize image to exact pixels
resize for instagram post
resize then compress for web

How it works

Upload a JPG, PNG, WebP, or GIF image, choose new dimensions or a scale percentage, and download the resized file. Aspect ratio can be locked, and you can keep the original format or export as JPG, PNG, or WebP. Resizing works on your device—files are not uploaded or stored.

Limitations

Upscaling cannot recover detail that was not in the original image. Extreme aspect-ratio changes may crop or distort if not constrained.

Privacy and file handling

Your data stays on your device and is not uploaded.

Related Resize Image guides

These pages use the same resize image with guides tailored to specific search intents.

Related comparisons

Learn how formats and terms differ before you convert or calculate.

HEIC vs JPG

FAQ

Frequently asked questions

Are images uploaded to a server?

Standard resize works on your device. See the privacy note for any server modes.

Can I keep aspect ratio?

Use the lock aspect ratio control when changing one dimension.

Which formats are supported?

Common formats like JPG, PNG, and WebP work on the tool page—check supported types there.

Page last reviewed: July 6, 2026

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