Re-compress PNG with OxiPNG and JPG with MozJPEG to cut file size — all processing happens locally, nothing is ever uploaded.
Add one or many — PNG, JPG & WebP. Or paste with ⌘/Ctrl + V
Clean the Gemini sparkle, then finish the job — crop, resize, convert and adjust without uploading a single pixel.
Reverse-alpha math restores the true pixels under the Gemini logo — no blur, no AI guesswork.
Crop to any aspect ratio with draggable handles, then resize to exact pixels or quick scales.
Export to PNG, JPG or WebP with a quality slider and a live file-size estimate.
Every tool runs locally with undo/redo. Nothing is uploaded — it even works offline.
No tutorials, no settings — drop, edit, export.
Drag in, paste, or pick a file. The Gemini watermark is removed automatically on load — no settings.
Crop, resize, rotate, adjust, remove the background or redact — with full undo/redo and a Before/After view.
Download or copy as PNG, JPG, WebP, AVIF or PDF — or batch-export a whole folder as a ZIP. Free, unlimited, watermark-free.
Everything you need to know about optimizing images locally.
PixKit Optimize shrinks your images using the exact Squoosh codecs — OxiPNG for lossless PNG and MozJPEG for high-efficiency JPG — running entirely as WebAssembly inside your browser tab. Pick PNG or JPG, tune the JPG quality, and download a leaner file in seconds.
OxiPNG re-encodes PNG data without touching a single pixel, finding the smallest possible representation. It is perfect for screenshots, logos, icons and any graphic with sharp edges or transparency that must stay crisp.
MozJPEG produces visibly cleaner JPGs at smaller sizes than standard encoders. Use the quality slider (50–95) to balance file size against fidelity — around 80 is an excellent default for photos and complex images.
One private editor, a tool for every job — all 100% local, no upload.