Image size tool
Drop in images, set exact pixel dimensions or keep the original size, choose a target in KB or MB, and export smaller files locally in your browser.
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Need a smaller image for a website, email attachment or upload form? Set a target in KB or MB and use the image compressor to balance file size, pixel dimensions and output format. Check the finished image before using it, especially when small text or fine detail matters.
Compression changes how image data is stored. Resizing changes the number of pixels in the image. Both can reduce file size, but smaller pixel dimensions also mean less detail is available when the image is enlarged.
To work towards your target, this tool may reduce pixel dimensions further than your starting settings. Always check the dimensions shown in the result if an upload form requires a specific width and height.
Add your image and choose a target slightly below 200 KB, such as 190 KB. Select a format the destination accepts, then compress and check the download. Leaving a little headroom helps when another website measures or rounds file sizes differently. If it also specifies pixel dimensions, check both requirements before submitting.
The target is a size limit to work towards, rather than an exact output size. The result can be smaller, or remain above the target if the available adjustments cannot reach it. Review any above-target warning before downloading.
JPG is a practical choice for photographs when transparency is unnecessary. WEBP is useful for web images when the destination accepts it. PNG is useful for transparent artwork and crisp graphics, although it can produce larger files. Start with the formats your website or upload form supports.
It can. Stronger lossy compression can soften detail or introduce artefacts, while reducing dimensions removes pixels. Compare the output at its intended display size. If the result looks too soft, try a larger target size.
Detailed images, large dimensions and the chosen format can make a very small target difficult to reach. Try another accepted format, smaller starting dimensions or a higher limit if the destination allows it. PNG output does not respond to a lossy quality setting in the same way as JPG or WEBP.
No. The compressor processes the selected images in your browser. Your image files do not need to be sent to 27tools for compression.
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