Online Image Resizer
Easily change dimensions of JPG, PNG, and WebP images. Resize by exact pixels or percentage scale securely in your browser.
Supports JPG, PNG, WebP
Sometimes an image is just too big. Whether you need a specific pixel width for a website banner or just want to shrink a photo to 50% of its original size, the ToolOnWeb Image Resizer makes it easy. You can change photo dimensions in seconds directly in your browser, without downloading heavy software.
How to Resize Your Photos
We built this tool to be fast and simple. Here is how it works:
- Upload: Drag and drop your JPG, PNG, or WebP image into the box above.
- Choose Method: Select Pixels to enter exact dimensions (e.g., 1200 x 600) or Percentage to scale it down (e.g., 50%).
- Lock Ratio: Keep the “Lock Icon” active to prevent your image from looking squashed or stretched.
- Download: Click the button to process the image and save the new version to your device.
Why Use This Free Image Resizer?
There are plenty of tools out there, but many are slow or unsafe. Here is why users trust ours:
100% Private and Secure (Local Processing)
Most online tools upload your photos to a cloud server to process them. We don’t. This tool runs entirely in your web browser. Your photos never leave your computer or phone, making it safe for personal or sensitive documents.
Pixel-Perfect Control
Need an image exactly 1080px wide for Instagram? You can resize pixels with precision. Prefer to just cut the file size in half? The percentage mode handles the math for you.
Fast and Free
No waiting in queues, no account sign-ups, and no watermarks. It is a completely free image resizer that works as fast as your device can process.
Technical Guide: Pixels vs. Percentage
Not sure which option to pick? Here is the breakdown:
- Resize by Pixels: Use this when you have a specific requirement. For example, YouTube thumbnails must be 1280×720 pixels. If you know the target number, use this mode.
- Percentage Resize: Use this for quick file size reduction. Scaling an image to 50% keeps the same aspect ratio but drops the resolution significantly, which is great for emailing large photos.
Frequently Asked Questions (FAQ)
Does resizing reduce image quality?
It depends. Making an image smaller (downscaling) generally keeps it sharp. Making an image larger (upscaling) can make it look blurry or pixelated because you are stretching the existing data.
Can I resize multiple images at once?
Currently, this tool focuses on resizing one image at a time to ensure maximum precision and preview quality. For batch processing, please check our other bulk tools.
What file formats are supported?
You can upload and resize JPG, JPEG, PNG, and WebP images.
Will my image aspect ratio be preserved?
Yes, by default. The “Lock” icon is active, meaning if you change the width, the height automatically adjusts to keep your image looking correct. You can unlock it if you want to manually change the dimensions.
Is this tool free to use?
Yes, completely free. We do not add watermarks, require signups, or limit how many images you can resize per day.