Image Resizer
Resize images online to change their dimensions quickly while keeping them clear and properly scaled.
Free Image Resizer
Upload Image
Upload Image
Drag & drop an image here or select a file from your device.
Supported formats: JPG, JPEG, PNG, and WebP
Original Dimensions
- Original Width:
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- Original Height:
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Resize Settings
Dimensions are in pixels, from 1 to 10000.
Resized Preview
Your resized preview will appear here.
- New Width:
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- New Height:
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Online Image Resizer
This online image resizer lets you resize JPG, JPEG, PNG, and WebP images directly in your browser. Enter a custom image size or pick a preset, lock the aspect ratio so your photo isn't stretched or distorted, and download the resized image in the format you choose. As a free image resizer and image optimizer and resizer in one, every part of the resizing tool runs on your device, so nothing is uploaded to a server.
Use this free photo resizer and picture resizer to change image dimensions by pixels for websites, social media posts, profile pictures, thumbnails, and custom image sizes. It also works as an image size changer, photo size changer, and image dimension changer for JPG, JPEG, PNG, and WebP files.
How to Resize an Image
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1
Upload Your Image
Select a JPG, JPEG, PNG, or WebP file, or drag and drop it into the upload area.
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2
Set the Image Dimensions
Choose a preset or enter a custom width and height, and lock the aspect ratio if needed.
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3
Resize and Download
Pick your output format and quality, select Resize Image, review the result, then select Download Resized Image to save it.
Image Resizing Uses
People reach for an image dimension changer for all kinds of everyday tasks: shrinking a photo so it uploads faster to a website, fitting a picture into an exact square or rectangle for a social media post, preparing a profile picture at the right size, or generating a lightweight thumbnail for a gallery. Because you can enter any custom width and height in pixels or start from a preset, the same tool works whether you need a small square image or a large banner-sized picture.
It also helps when you need to convert between formats while resizing — for example turning a large PNG screenshot into a smaller, compressed JPG, or exporting a WebP image for a faster-loading page. Since everything runs in your browser, you can resize as many JPG, PNG, or WebP files as you need without waiting on uploads or worrying about where your images are being processed.
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Frequently Asked Questions
What is an image resizer?
An image resizer is a tool that changes the width and height of an image. This free image resizer lets you resize JPG, PNG, and WebP photos online by entering new pixel dimensions or choosing a preset size, then downloading the resized image.
How do I resize an image online?
Upload your photo, enter the width and height you need or pick a preset, select Resize Image, review the result, then select Download Resized Image. This online image resizer processes everything in your browser.
Can I resize an image without losing its aspect ratio?
Yes. Turn on Lock Aspect Ratio and this image resizer will automatically calculate the matching height or width for you, so your picture is resized without losing quality or becoming stretched or distorted.
Can I enter custom image dimensions?
Yes. Choose Custom Size to enter any custom image size in pixels, or use one of the built-in presets like 1920 × 1080 or 1080 × 1080 for a quick image dimension changer.
Which image formats are supported?
This photo resizer supports JPG, JPEG, PNG, and WebP images for upload, and lets you resize JPG, resize PNG, or resize WebP files and export the result as JPG, PNG, or WebP.
Can I resize an image without uploading it to a server?
Yes. This picture resizer runs fully in your browser using the Canvas API. Your image is never uploaded to a server, which keeps your files private and the tool fast.
Can I choose the output image format?
Yes. After resizing, choose JPG, PNG, or WebP as your output format, and adjust the quality slider for JPG or WebP to balance file size and image clarity.
Can I resize a photo for social media?
Yes. You can use presets such as 1080 × 1080, 1080 × 1350, or 1080 × 1920, or enter custom dimensions for social media posts, stories, and profile images.
Does resizing change my original image?
No. The original file remains unchanged. The resized image is created separately in your browser.
Is this image resizer free?
Yes. Working Tools Box provides this browser-based image resizing tool free of charge, with no server upload required for processing.