Compress JPG, PNG and WebP images to an exact size in KB or by a percentage, while keeping the highest possible quality and full resolution. Everything runs in your browser nothing is uploaded.
Compression Settings
KB
🗜️
Click or drag images here
JPG, PNG and WebP up to 30 MB each · multiple files allowed
Related Tools
Free tools that work well alongside the Image Compressor.
Free Online Image Compressor Compress to an Exact KB Size
The TOOLBeans Image Compressor shrinks JPG, PNG and WebP images so they take up less space while keeping them looking as close to the original as possible. You can compress an image to an exact target size in kilobytes, reduce it by a percentage, or set a quality level by hand. It is built for the everyday problem of an image being too big: a photo that will not fit a 31 KB upload limit, a screenshot that is slowing down a web page, or a batch of pictures that need to be email-friendly.
Everything happens right inside your browser. When you add an image it is decoded onto a canvas and re-encoded locally using your browser's built-in image engine, so nothing is ever uploaded to a server. That makes it fast, completely private, and usable even on a slow connection once the page has loaded. There is no signup, no watermark and no limit on how many images you compress.
The before-and-after preview and the exact size readout let you see precisely what you are getting before you download, so you stay in control of the balance between file size and visual quality.
Can You Compress Without Losing Any Quality?
It helps to be honest about how image compression works. Making a file meaningfully smaller almost always involves giving up a small amount of detail that is what creates the space saving. True lossless compression (where not a single pixel changes) can only trim a limited amount, and it cannot guarantee hitting a small exact size like 31 KB. So a tool that promises both an exact tiny size and zero quality loss is promising something that is not physically possible.
What this tool does instead is keep quality as high as possible for the size you ask for. It never shrinks your image's resolution it keeps every pixel dimension and it picks the highest quality setting that still meets your target. For most photos the difference at the resulting size is barely noticeable, and the before-and-after preview lets you judge it yourself. If you need genuinely lossless output, choose the PNG format, which keeps the image pixel-perfect (though the file will be larger).
In short: you get the smallest file at the best possible quality for that size, with full resolution preserved and full visibility into the result.
Three Ways to Compress
🎯 Target Size (KB)
Type the exact size you need, such as 31 KB, and the tool automatically searches across quality levels to find the highest quality version that lands at or just under your target. Perfect for upload limits and forms with a strict size cap.
📉 By Percent
Choose how much smaller you want the file, for example 30% smaller or 50% smaller. The tool aims for that reduction from the original size. Great when you just want "noticeably smaller" without a specific number in mind.
🎚️ Quality
Set a quality level from 5 to 100 yourself and see the resulting size. This gives you direct manual control and is handy when you know roughly what quality you are comfortable with.
How to Compress an Image Step by Step
1
Choose a mode
Pick Target Size, By Percent, or Quality at the top of the settings panel, then set your value such as a target of 31 KB.
2
Pick an output format
Keep the original format, or convert to JPEG or WebP for much smaller photos, or PNG for lossless output.
3
Add your images
Drag and drop one or more images onto the upload area, or click to browse. Each appears with its current size and dimensions.
4
Click Compress
The tool processes each image in your browser and shows the new size, the percentage saved, and a preview thumbnail.
5
Check the result
Compare the before and after sizes. Adjust the target or quality and compress again if you want a different balance.
6
Download
Download each compressed image individually, or use Download all to save the whole batch at once.
JPEG vs WebP vs PNG Which Format Should You Pick?
Choosing the right output format often saves more space than any quality setting. Here is a quick guide.
JPEG
The best all-round choice for photographs and complex images with lots of colors. It compresses smoothly and is supported everywhere. Use it when you want the smallest file for a photo and do not need transparency.
WebP
A modern format that usually produces smaller files than JPEG at the same quality, and also supports transparency. Ideal for the web and supported by all current browsers. Choose it when you want the best size-to-quality ratio.
PNG
Lossless and supports transparency, so it keeps the image pixel-perfect but the file is larger. Best for logos, icons, screenshots with sharp text, or any image where you cannot accept any quality loss. The quality and target settings do not apply to PNG.
A common, very effective trick: take a large PNG photo and convert it to WebP or JPEG. Because PNG is lossless it is often huge for photographs, and switching format can cut the size dramatically with little visible change.
Your Images Never Leave Your Device
Many online compressors upload your images to a server, process them there, and send them back. This one does not. All decoding and re-encoding happens locally in your browser using the standard Canvas API, so your images are never transmitted, stored, or seen by anyone else.
That makes it safe for personal photos, work screenshots, client assets, and anything confidential. It also means compression is instant there is no upload wait and it keeps working even if your connection drops after the page has loaded.
Frequently Asked Questions
Is the image compressor free?+
Yes. It is completely free with no usage limits, no account and no signup. There is no watermark on the output and no cap on how many images you compress.
Are my images uploaded to a server?+
No. All compression runs entirely in your browser using the Canvas API. Your images never leave your device and are never sent anywhere, which makes it safe for private or confidential pictures.
Can I compress an image to an exact size like 31 KB?+
Yes. Choose Target Size mode and enter your number, for example 31 KB. The tool automatically searches quality levels to find the best-looking version that lands at or just under your target, getting as close as the format allows.
Will compressing lower my image quality?+
Any real reduction in file size involves some quality trade-off, because that is how compression frees up space. The tool keeps your full resolution and picks the highest quality that meets your target, and the before-and-after preview lets you see the result before downloading.
How can I compress without any quality loss at all?+
Choose the PNG output format. PNG is lossless and keeps the image pixel-perfect. The file will be larger than a compressed JPEG or WebP, but no detail is lost.
Which formats can I compress?+
You can compress JPG/JPEG, PNG and WebP. You can also convert between them, for example turning a large PNG into a much smaller WebP or JPEG, which often saves the most space.
Can I compress several images at once?+
Yes. Add as many images as you like to the queue, compress them all with your chosen settings, then download them individually or all at once.
Does it reduce the image dimensions?+
No. The tool keeps the full pixel dimensions of your image. It reduces file size through compression and format choice, not by shrinking the resolution.
What is the maximum file size I can add?+
Each image can be up to 30 MB. Very large images take a moment longer to process because the work happens on your own device.
Why did my file get bigger instead of smaller?+
This can happen if the original is already highly compressed, or if you convert a small JPEG to PNG. In that case the tool shows an "already optimal" note; try a different format such as WebP or keep the original.