Image Compressor & Resizer

How to Use the Image Compressor & Resizer

1. Choose a JPEG, PNG or WebP image (or drag one onto the box on a computer).
2. Pick a new size, or leave it, and choose the output format and quality. Or choose Up to a file size and enter the most you want, in KB.
3. Press Compress image. Compare the result with the original and download it. You can change the settings and compress again: each run starts from your original, never from the last result.

What Makes a File Smaller

Dimensions matter most: halving the width and height leaves about a quarter of the pixels. Lowering the quality of a JPEG or WebP saves more, at the cost of detail. Saving an image again at the same size can make the file larger, for example when the original was already compressed hard, so the page always shows the actual result, including when it grew.

PNG is lossless here, so it has no quality setting: reduce the dimensions, or choose WebP or JPEG, to get a smaller file. JPEG cannot keep transparency, so it is not offered for images that have it.

The "up to" size is approximate. The page tries a handful of quality settings and keeps the highest quality that fits. If even the lowest quality at your chosen dimensions is still too large, it says so and you can try smaller dimensions.

Limits and Privacy

One image at a time: JPEG, PNG or WebP, up to 25.0 MB and 40 megapixels, output up to 8,192 pixels on a side. HEIC/HEIF, GIF (animation would be lost), AVIF and SVG are not supported in this version. Large images need a lot of memory on a phone, so the limits are deliberately conservative.

Your image is processed in your browser and is not uploaded by this tool. It is not saved, and the page address never contains it. Reloading the page clears it.

Frequently Asked Questions