Compress images for the web
Large images slow pages and burn mobile data. Compression shrinks files while keeping enough visual quality — and you can do it entirely in the browser.
Open Image CompressorWhat compression does
Lossy formats (JPEG, WebP) discard detail to save bytes. PNG keeps sharp edges and transparency but is often heavier for photos. Resizing to the display width is often a bigger win than quality alone.
Why compress locally
Uploading client photos or unreleased assets to a random compressor is a privacy risk. Kitnax processes images on your device so originals never leave the machine.
How to compress with Kitnax
- Open the Image Compressor.
- Drop a JPEG, PNG or WebP file.
- Tune quality and max width; watch before/after and file size.
- Download when the trade-off looks right.
Use cases
- Blog and CMS hero images
- Product shots for stores
- Email attachments with size limits
- Social posts before upload
Best practices
Match dimensions to the layout (don’t serve 4000px for a 600px column). Prefer WebP when support allows. Keep a lossless original in your archive. Compare side by side — “good enough” beats theoretical maximum quality.