Resize workspace
Upload images to begin
Drop images into the workspace
Select one image or process a complete batch with shared settings.
Choose imagesJPG, PNG, WebP, AVIF, and static GIF
Resize Images by Pixels or Percentage
Set an exact width and height, or scale by percentage, and download the result straight away. JPG, PNG and WebP are all supported, so you can resize a WebP directly without converting it first. Several images can be processed as a batch and downloaded as a ZIP, and everything runs free and without upload inside your browser.
How to use this tool
- 1
Select Your Images
Choose one or more JPG, PNG or WebP files, or drag them onto the area. The files stay on your device.
- 2
Set the Dimensions
Enter width and height in pixels, or switch to percentage mode if you just want it proportionally smaller.
- 3
Lock the Aspect Ratio
With the lock on, the second edge follows automatically so the image is never stretched.
- 4
Choose the Output Format
Keep the original format, or export as JPG, PNG or WebP depending on what you are using it for.
- 5
Download the Result
Take the images one by one, or the whole batch as a ZIP archive.
What it can do
Pixels or Percentage
Use exact dimensions when a requirement demands them, or percentage when it simply needs to be smaller.
Aspect Ratio Lock
Width and height stay proportional so nothing looks stretched. The lock can be released for a deliberate crop.
JPG, PNG and WebP
All three are read and written, so you can resize a WebP without a separate conversion step first.
Batch Processing
Resize several images in one pass and download them together as a ZIP.
Before and After Dimensions
Old and new dimensions and the file size are shown, so the effect stays verifiable rather than a guess.
Orientation Respected
The orientation stored in the image is honoured, so phone photos do not come out rotated.
Nothing Uploaded
Resizing happens in your browser. Images never leave your device and are not stored anywhere.
Free and No Sign-Up
No account, no email, no watermark and no daily limit.
Useful for
- Resizing images so a website loads faster
- Shrinking phone photos that are far larger than the use needs
- Meeting a portal or form requirement that specifies exact pixel dimensions
- Fitting profile and cover images to the sizes a platform expects
- Standardising the width of product images for a shop
- Resizing a WebP file without converting it to another format first
- Scaling screenshots to a readable width for documentation
Limits to know
- Enlarging an image cannot add detail. Beyond the original dimensions the result gets softer, not sharper.
- There is no pixel-art scaling with hard edges. The interpolation used is smooth, which is right for photos but wrong for pixel graphics.
- You cannot target an exact size in kilobytes. Use the image compressor for that.
- Releasing the aspect ratio lock can stretch the image. That is intentional, but it should be a deliberate choice.
- Exporting to JPG removes transparency and fills it white, because the format cannot store it.
- Animated images do not keep their animation.
- Very large batches are bounded by device memory, because everything is computed locally.
Private browser processing
This tool runs locally in your browser. TunerPage does not upload the working file or text to its servers.
Frequently asked questions
How do I resize an image online?
Select the image, enter the width or height you want, or use percentage mode, then download the result. No account is needed and nothing is uploaded.
Can I resize a WebP file?
Yes. WebP is both read and written, so you can resize it directly without converting it to another format first.
How do I stop the image being distorted?
Leave the aspect ratio lock on. The second edge then follows the first and the proportions are preserved.
Should I use pixels or percentage?
Pixels when a requirement specifies exact dimensions. Percentage when it just needs to be smaller and the exact number does not matter.
Can I enlarge an image without it going blurry?
Not really. Enlarging has to invent the missing pixels, so no real detail appears. Up to roughly double it usually stays usable; beyond that it becomes visibly soft.
Does resizing also make the file lighter?
Yes, substantially. Reducing dimensions is the most effective way to save file size. If it needs to be smaller still, the image compressor helps afterwards.
Can I resize several images at once?
Yes. Select multiple files, process them in one pass and download them together as a ZIP.
Does the file format change?
Only if you want it to. You can keep the original format or export specifically as JPG, PNG or WebP.
What happens to transparency?
It is preserved if you export as PNG or WebP. With JPG it is lost and those areas become white.
Are my images uploaded?
No. Resizing runs entirely in your browser and the files never leave your device.
Is this suitable for pixel art?
No. Pixel art needs scaling without smoothing so the edges stay hard. Here the image is interpolated, which is correct for photos but would blur pixel art.
Does it work on a phone?
Yes, in any modern mobile browser. With many large images, device memory can become the limit.
Is it free?
Yes, completely free with no sign-up, no email required and no daily limit.