Image Resizer
Resize an image to exact pixel dimensions or by percentage, with aspect ratio lock.
Runs in your browser — your files are not uploaded.
How to use the Image Resizer
- Upload a JPG, PNG or WebP image.
- Choose to resize by pixels or by percentage. Keep "Lock aspect ratio" on to avoid stretching.
- Pick an output format and quality if you want a different file type.
- Click "Resize & download" to save the result.
Why use the Image Resizer?
Most platforms display images at a fixed width, so uploading a 4000px photo for a 1200px slot wastes bandwidth and storage. Resizing first gives you predictable results: blog featured images, product photos, email banners and marketplace listings all look sharper when the file matches the space it fills. Locking the aspect ratio prevents stretched logos and squashed faces. Everything happens in your browser, so your images are not uploaded anywhere.
Frequently asked questions
Will enlarging an image make it sharper?
No. Making an image bigger than its original size stretches the existing pixels, so it will look softer. For the best quality, start from the largest original you have.
What size should a blog featured image be?
It depends on your theme. Many themes display featured images between 1200 and 1600 pixels wide — check your theme settings or inspect an image on your site.
What does "Lock aspect ratio" do?
It keeps width and height in proportion. When you change one, the other updates automatically, so the image is not distorted.
Is there a file size limit?
Files up to 25 MB are accepted. Very large images may take a few seconds to process on older phones.