Free Image Resizer
Resize images to exact pixel dimensions or a percentage. Keep the aspect ratio locked, choose a format and download.
- Free, no signup
- Images stay on your device
- Aspect ratio lock
How to use Image Resizer
- Drop an image onto the tool, or choose one from your device.
- Enter a new width or height — the other side follows while the aspect ratio is locked. Or tap a percentage.
- Choose PNG or JPG for the output.
- Click Resize image, then download.
Features
- Exact width and height in pixels
- Aspect ratio lock so images never stretch
- One-tap scale presets: 75%, 50% and 25%
- PNG (lossless) or JPG output
- High-quality downscaling for sharper results
- Processed locally — nothing is uploaded
What can you use Image Resizer for?
Resizing lets you fit an image to an exact width and height, whether you're preparing a thumbnail, an avatar, or an upload with strict dimension limits. Lock the aspect ratio to avoid stretching, or set custom dimensions freely.
Most upload forms, ad platforms and social networks expect an image at a specific width and height, and an image that's the wrong size gets stretched, cropped or rejected. Resizing recalculates the pixel dimensions of a photo, and locking the aspect ratio keeps proportions correct automatically so faces and objects don't distort.
- Fitting a photo to the exact pixel dimensions required by a job application, marketplace or CMS.
- Creating a smaller thumbnail version of a larger photo for faster page loads.
- Preparing a profile picture or avatar that meets a platform's square-image requirement.
- Scaling a graphic down before compressing it, since a smaller image compresses more efficiently.
Tips for better results
- Keep aspect ratio locked unless you specifically want to stretch the image — unlocking it can distort faces and straight lines.
- Resize down rather than up where possible; enlarging a small photo makes it blurry since no new detail can be added.
- If a platform asks for an exact size like 1200×630, enter that value directly rather than guessing a scale percentage.
- Resize before you compress — it's the more effective order for getting the smallest possible file.
- Common social sizes to enter directly: Instagram post 1080×1080, Instagram Story 1080×1920, Facebook cover 820×312, YouTube thumbnail 1280×720.
Frequently asked questions
Is the image resizer free?
Yes, resizing images is completely free with no signup required.
Will resizing distort my image?
No, aspect ratio locking keeps your image from stretching unless you turn it off.
Are my images uploaded anywhere?
No. Images are resized locally in your browser and never leave your device.
Does resizing reduce file size too?
Usually yes, since fewer pixels means less data, but for the smallest possible file also run the result through the Image Compressor.
Can I resize to a larger size than the original?
Yes, but enlarging a photo beyond its original resolution will make it look softer or blurry, since the tool can't invent detail that wasn't there.
What's the difference between resizing and compressing?
Resizing changes the pixel dimensions (width × height). Compressing lowers the file size by re-encoding at a lower quality, without changing the dimensions. For the smallest file, resize first and then compress.
Can I make an image larger?
You can, but enlarging cannot add detail, so photos look soft or blurry. Start from the largest original you have and scale down whenever possible.