Image
Resize Image
Change dimensions by pixels or percentage — nothing leaves your browser. Batch-resize a whole folder of photos at once.
Whether you're preparing images for a website, email, social media, or a print template, hitting the right dimensions is often the first step. Uploading an oversized photo wastes bandwidth and slows page loads; an image too small looks pixelated when stretched. This tool lets you set exact pixel dimensions or scale by a percentage, with aspect-ratio locking on by default so nothing looks distorted. All processing uses the browser's Canvas API with high-quality smoothing — no server receives your image at any point. Need to resize a whole batch of photos the same way? Drop them all in at once — each image is resized using its own original proportions, and you can download the results individually or as a single ZIP.
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How to Use
- 1
Drop one PNG, JPEG, or WebP image, or select a whole batch of them, onto the upload area.
- 2
Choose Pixels or Percentage mode. In Pixels, enter the width and height directly. In Percentage, enter a scale factor — 50% halves both dimensions.
- 3
The lock icon keeps the aspect ratio proportional. Click it to unlock if you want to stretch the image to non-proportional dimensions. In batch mode with the lock on, each image keeps its own proportions.
- 4
Select an output format — keep the original, or switch to PNG, JPEG, or WebP.
- 5
Click "Resize" to export. Download each result individually, grab the whole batch as a ZIP, or send it directly to Compress Image if you want to reduce the file size further.
Frequently Asked Questions
Does resizing reduce image quality?
Scaling down uses high-quality bicubic interpolation and has minimal visible impact at reasonable ratios. Scaling up stretches pixels and can look blurry — avoid upscaling photos beyond around 150%.
Which formats are supported?
PNG, JPEG, and WebP. You can also convert the format as part of the same operation — for example, resize a PNG and save it as WebP in one step.
Can I stretch an image to non-proportional dimensions?
Yes. Click the lock icon between the width and height fields to unlock the aspect ratio, then type any values you need.
Will the tool upscale my image?
It will if you enter dimensions larger than the original. A warning appears when this happens. For photos, upscaling rarely improves quality.
Is my image uploaded to a server?
No. Everything runs in your browser using the Canvas API. Your file never leaves your device. Open DevTools → Network to confirm.
Can I resize multiple images at once?
Yes — this is a bulk image resizer. Drop several images in one batch; with the aspect-ratio lock on, each image is resized using its own original proportions rather than being forced to a single fixed size. Download results individually or as a ZIP.