Zestkit

Free image tools that stay on your device

Compress to an exact size, convert formats, or remove a background without sending your image to an upload API.

No uploads · No account · Free · 100% in-browser processing

Choose a focused tool

One job per page, with the important limit stated before you choose a file.

Start with 100KB
20KBCompress Image to 20KBPrepare compact photos for strict legacy and application portals.50KBCompress Image to 50KBFit photos into strict exam, identity, and application forms.100KBImage CompressorCreate a byte-verified image for common official upload limits.200KBCompress Image to 200KBKeep application and document photos clear under a 200KB cap.1MBCompress Image to 1MBReduce camera and web images for email, CMS, and form uploads.2MBCompress Image to 2MBFit high-resolution images under a generous upload limit.ConverterImage ConverterConvert between JPG, PNG and WebP.BG RemoverRemove BackgroundAI background removal on your device.

Small tools, clear boundaries

Zestkit is a collection of narrow image utilities built around browser APIs. Your browser reads the selected file, performs the requested work, and creates a temporary local download.

The pages do not require an account, payment, or an image-upload API. Background removal downloads its AI model before local processing; compression and conversion use browser encoders and workers already loaded by the page.