Free Image Tools
Compress, convert, resize, crop and clean up images — entirely in your browser. Your photos never leave your device.
Almost every image job falls into one of four buckets: make it smaller, make it a different format, make it a different shape, or change what is in it. ZillaKit has a focused tool for each, and none of them ask you to create an account or wait in an upload queue.
When a form rejects your photo because it is "over 2 MB", reach for Compress Image to Target KB — it hunts for the quality setting that lands you just under an exact file size, rather than making you guess. If the problem is the format rather than the weight, the Image Converter moves images between PNG, JPG, WebP, GIF and BMP in batches, and HEIC to JPG handles the iPhone photos that refuse to open anywhere else. Building a favicon? PNG to ICO produces a proper multi-size .ico rather than a renamed PNG.
For shape and framing, Resize, Crop and Rotate & Flip cover the basics, while the platform-specific presets — Passport Photo, YouTube Thumbnail and Instagram Story — save you looking up the correct pixel dimensions. To change what is actually in the picture, the Background Remover runs an AI segmentation model on your own device, and Pixelate & Blur censors faces, plates and addresses before you share.
That last point is the whole reason these tools exist in the browser. Photos carry more than they look like they do: an EXIF record can include the exact GPS coordinates where the shot was taken and the serial number of the camera. Uploading a private photo to a stranger's server just to shave 300 KB off it is a bad trade. Here, the processing happens in JavaScript on your machine — nothing is transmitted, nothing is stored, and closing the tab is all the cleanup there is.
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Image tool FAQ
Do my images get uploaded to a server?
No. Every image tool in this category reads your file with the browser's own FileReader and Canvas APIs, processes the pixels in memory on your device, and hands you back a download. There is no upload step, so there is nothing on our side to leak, sell or breach. You can verify it yourself: open your browser's Network tab, run a tool, and watch that no request carries your file.
Can I compress an image to an exact file size, like under 500 KB?
Yes — that is exactly what Compress Image to Target KB is for. Set the target size in kilobytes and it repeatedly re-encodes the image, tuning JPEG or WebP quality until the result fits under your limit while staying as sharp as possible. This is the tool to use for job applications, government portals and forum uploads that enforce a hard size cap.
Which format should I export — PNG, JPG or WebP?
Use JPG for photographs, where a little lossy compression is invisible and file sizes drop dramatically. Use PNG when you need transparency or crisp edges — logos, screenshots, diagrams, and anything with text. Use WebP when the destination is a website you control: it is typically 25–35% smaller than JPG at the same visual quality, and every modern browser supports it. If you are unsure, JPG is the safest universal choice.