Image resizer
Make an image smaller for a webpage, message, or document. Your file is processed on your device and the original stays untouched.
Image resizer
Runs on your devicePixels and file size are different
Width and height describe the number of pixels in an image. File size describes how much storage the encoded image uses. A 2,000-pixel photograph can be large or small depending on the format, quality, and detail in the picture. Reducing the dimensions removes pixels. Lowering JPEG or WebP quality changes how strongly the picture is compressed. These controls solve related but different problems.
Resize without stretching
The two dimensions act as a bounding box. The tool keeps the original aspect ratio and fits the image within that box. An image that is 1,600 × 800 pixels fitted into 800 × 800 becomes 800 × 400. Small images are not enlarged. Resizing cannot add detail that was not in the original. For a sharp result, start with a source that is at least as large as the size you need.
Choose an output you can use
JPEG suits photographs but does not preserve transparency; this tool places transparent areas on white when exporting JPEG. PNG preserves transparency and uses lossless compression, so the quality slider does not apply. WebP supports transparency and lossy compression, but the receiving application needs to support it. The browser redraws the image, so metadata is not intentionally copied. Animated images become a still frame; use a dedicated animation editor if motion matters. Always inspect the downloaded result before sharing it.
Worked examples
| Original | Maximum box | Output dimensions |
|---|---|---|
| 1,600 × 800 px | 800 × 800 px | 800 × 400 px |
| 600 × 900 px | 400 × 400 px | 267 × 400 px |
Good questions.
Is my picture uploaded?
No. File reading, resizing, and encoding happen inside your browser. Downloading creates a new local file.
Why can the output file be larger?
A different format or high quality can create a larger file, especially for an image that was already optimized. Compare the shown file sizes before downloading.
Will this preserve animation?
No. The output is a still image. GIF, SVG, HEIC, and AVIF uploads are not supported by this tool.
Updated 5 November 2026 · Methods & corrections
A useful next read.
A smaller image. A better fit.
Choose dimensions, formats, and quality settings that suit the picture you need to share.
Crop, resize, or compress: choose the right change
Understand which image operation solves a framing problem, a dimension limit, or a file-size limit.