Toolzaio Image Compressor
Make a photo file smaller without making it look worse. Use the quality slider, or set a target size in KB and let the tool find the quality that fits.
Drop a picture here, or click to choose one
JPG, PNG or WebP. Compressed on your device — the photo is never uploaded.
How it works
Photo files are big mostly because they store more detail than a screen needs. This tool redraws your picture in the browser at a slightly lower quality setting, which trims the invisible detail and cuts the file size hard, often by 60 to 90 percent, while the picture still looks the same at normal viewing size.
In target size mode, the tool tries quality settings from high to low until the result fits under your KB limit, and shrinks the dimensions a little only if quality alone cannot get there. That is the mode to use when a form says "photo must be under 200 KB" and means it.
A note on PNG: PNG files do not have a quality setting, because the format stores every pixel exactly. To compress a PNG photo, this tool saves it as a JPG instead, with any transparent areas placed on white. Screenshots with lots of text stay sharper as PNG, so for those, lowering the dimensions is the better lever.
Questions people ask
Is my photo uploaded to a server?
No. The compressing is done by your own browser. Nothing is sent, stored or shared, which is why there is no queue and no daily limit.
What quality setting should I use?
80% is the sweet spot for most photos: much smaller file, no visible difference on screen. Drop to around 60% when size matters more than detail, for example photos inside documents or email.
My form wants a photo under a fixed KB. What do I do?
Switch to Target size mode, type the limit, and press Compress. The tool does the trial and error for you and reports the final size before you download.
Will the picture get smaller on screen too?
Only if you choose a largest-dimension limit. Quality compression alone keeps the same width and height; it just stores the picture more efficiently.
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