How to Resize an Image Online Without Losing Quality
To resize an image without losing quality, scale the dimensions using exact pixels or percentages while locking the aspect ratio to prevent distortion. Downscaling keeps images sharp, whereas substantial upscaling beyond native resolution introduces softness because new pixels must be interpolated.
Step-by-Step Instructions
Select or drop your image
Choose a JPG, PNG, or WebP file from your computer or phone to load it into the editor.
Tip: Ensure your original file is the highest resolution version available before resizing.Choose pixel dimensions or percentage
Enter your target width or height in pixels, or switch to percentage scaling (10% to 200%). Keep "Lock aspect ratio" turned on so width and height scale proportionally.
Tip: Keeping the aspect ratio locked prevents unwanted stretching or squishing.Process and download
Click Process to render the image at its new dimensions via client-side canvas, then download the resized file immediately.
Technical Capabilities & Specifications
Alternative Methods on Windows, Mac & Mobile
Photos App
Open your image in Windows Photos, click the "..." (More options) menu at the top, select "Resize image", and choose custom pixel dimensions or a preset percentage.
Preview App
Open the image in Preview, choose Tools > Adjust Size from the menu bar, select pixels or percent, verify "Scale proportionally" is checked, and click OK.
Photos / Shortcuts
Open Photos, tap Edit > Crop to adjust framing, or use an Apple Shortcut with the native "Resize Image" action to specify exact pixel dimensions.
Google Photos / Gallery
Open the photo, tap Edit, and use the Crop tool or native editor to adjust framing and save an optimized copy.
Frequently Asked Questions
Does resizing an image make it blurry?
Reducing image dimensions (downscaling) preserves or improves perceived sharpness. Enlarging an image (upscaling) beyond original dimensions can look soft because the system must generate new pixels where none existed.
Will transparent areas in my PNG be kept?
Yes. Resizing a PNG preserves the alpha channel transparency so backgrounds remain see-through.
How do I prevent my image from stretching or distorting?
Always keep the aspect ratio locked. This ensures height changes automatically when width changes, maintaining original proportions.
Are my images sent to any server?
This tool processes the file in your browser using the site's client-side engine. Nothing is uploaded to an external server.