Image Resizer
Change image dimensions by exact pixels, percentage or presets. Resize JPG, PNG and WebP individually or in batches with aspect-ratio and upscale controls.
How to Resize Images by Pixels or Percentage⌄
- Add one or more JPG, PNG or WebP images.
- Choose pixels, percentage or a preset as your resize method.
- Enter the dimensions or scale you want.
- Keep the aspect-ratio lock on for proportional resizing, or unlock it when you need independent width and height values.
- Choose the output format and adjust JPG or WebP quality when needed.
- Enable upscale only if you intentionally want to enlarge smaller images.
- Start the resize, review the new dimensions and download each image or the full batch as a ZIP.
Control the Dimensions, Not Just the File⌄
- Set precise width and height values in pixels.
- Scale each image relative to its original dimensions by percentage.
- Use ready-made dimensions when you do not want to enter values manually.
- Lock the aspect ratio to keep natural proportions.
- Resize several images with one shared set of settings.
- Keep PNG transparency when the result is saved as PNG.
- Choose JPG, PNG or WebP for the resized output.
- Prevent unintended enlargement by leaving upscale disabled.
- Download batch results together in a ZIP archive.
What Image Resizing Actually Changes⌄
An image can look perfectly fine on screen and still have the wrong dimensions for the place where you need to use it. A profile field may require a specific width, a product grid may need consistent image dimensions, and a website layout may work best when oversized camera photos are reduced before publishing.
Voymira Image Resizer changes the pixel dimensions of JPG, PNG and WebP images. You can enter an exact width and height, scale the original dimensions by percentage or choose a preset. This makes the tool useful when the target is a particular image size rather than simply a smaller number of megabytes.
With the aspect-ratio lock enabled, changing one dimension keeps the image proportional so people, products and other objects retain their natural shape. When a layout requires independent width and height values, the ratio can be unlocked and both dimensions can be set directly.
The same settings can be applied to several images in one batch. Results can be downloaded separately, while multiple outputs can also be collected into a ZIP file. You can keep the original format or choose JPG, PNG or WebP for the resized copy.
When Exact Image Dimensions Matter⌄
- Match an image to the pixel dimensions required by an upload form.
- Create consistently sized product photos for an online catalog.
- Prepare profile pictures, avatars and account images for fixed-size fields.
- Reduce the dimensions of very large camera photos before using them on a website.
- Scale screenshots for documentation, tutorials or presentations.
- Prepare several images with the same dimensions for a gallery or content layout.
- Make half-size or other percentage-based copies without calculating every dimension manually.
- Create resized JPG, PNG or WebP copies while keeping the original files untouched.
Pixels, Proportions and Upscaling: What to Check⌄
- Keep the aspect-ratio lock enabled for photographs and other images that should retain their natural proportions.
- Use exact pixels when a website or form gives you a required width and height.
- Use percentage resizing when you simply want a proportional copy such as 50% or 75% of the original dimensions.
- Avoid large upscales unless they are necessary because increasing dimensions cannot recreate detail that was never captured.
- Choose PNG when transparency needs to remain transparent.
- Use JPG for photographs when transparency is not required.
- WebP is useful when you want a modern image format for web use.
- Check the resulting pixel dimensions before uploading the image to its final destination.
- Keep the original file separately when you may need its full dimensions again later.
Frequently Asked Questions
How do I resize an image to exact pixel dimensions without stretching it?⌄
Enter the width or height you need and keep the aspect-ratio lock enabled. The matching dimension is calculated proportionally so the image keeps its original shape. Unlock the ratio only when you intentionally need independent width and height values.
Can I resize several JPG, PNG or WebP images at once?⌄
Yes. Add multiple images, choose one resize configuration and process them as a batch. Each result can be downloaded separately, and multiple results can also be downloaded together as a ZIP.
Should I resize an image by pixels or by percentage?⌄
Use pixels when you know the exact dimensions required by a website, form or layout. Use percentage when you want to scale the original image proportionally without calculating the new width and height yourself.
Can I enlarge an image beyond its original dimensions?⌄
Yes. Enable the upscale option when larger dimensions are required. Enlarging adds pixels but cannot recreate original detail that was never captured, so a large upscale can look softer than the source image.
Does changing image dimensions also change the file size?⌄
Often, yes. An image with fewer pixels commonly needs less data, but the final file size also depends on the image content, output format and encoding quality. Image resizing controls dimensions; file compression specifically targets storage size.
What is the difference between resizing an image and compressing it?⌄
Resizing changes the width and height of the image in pixels. Compression focuses on reducing the amount of data used to store the image. A resized image may also become smaller in file size, but the two operations solve different problems.
