Resize images
Add your images, set a width and height or a percentage, and download the resized versions. Everything happens in your browser, so your images are not uploaded to a server.
Add at least one image to continue.
How to use resize image
- Select your images, or drag them onto the upload area.
- Choose whether to resize by width and height, by percentage, or to a common size.
- Keep the aspect ratio locked unless you specifically want to stretch the image.
- Select Resize images, then download them individually or together as a ZIP.
Supported files and limits
- Formats
- JPG, JPEG, PNG, WebP
- File size
- 25 MB per image, 150 MB per batch
- Batch
- Up to 30 images
What happens to your files
This tool runs inside your browser tab. Your files are read by the page, processed on your own device, and never sent to Docstools. Closing or reloading the page clears them from memory. Read the full privacy policy.
Frequently asked questions
What happens if I enter both a width and a height?
With the aspect ratio locked, each image is fitted inside the box you gave, so it may end up narrower or shorter than one of your numbers but keeps its shape. Unlock the aspect ratio to use both numbers exactly, which will stretch the image.
Can I make an image larger?
Only if you tick the box allowing it. Enlarging cannot add detail that is not in the file, so it is off by default: asking for a bigger size simply returns the original dimensions unless you opt in.
Will resizing give me a specific file size?
Not reliably. Smaller dimensions usually mean a smaller file, but the exact size depends on the image content. If you need to hit a file size, use the image compressor and adjust the quality.
Are the images sharp after resizing?
Downscaling uses your browser’s high-quality smoothing, which avoids the jagged edges a naive resize produces. Very large reductions in one step will always lose some fine detail.
Can I resize several images at once?
Yes. Up to 30 images are processed in one run, each resized with the same settings, and downloaded together as a ZIP.