Private browser tools

Your images. Your device. Your orbit.

Compress, resize, crop and convert images free in your browser. Your files never leave your device. No accounts, uploads or watermarks.

Files stay on your deviceFree to useNo sign-up

Ten useful tools

Everything needed for everyday images

Pick one task. The tool runs locally in a modern browser and gives you a downloadable copy.

TOOL 01

Image Compressor

Compress JPG, PNG and WebP images in your browser. Reduce image file size without uploading your files.

TOOL 02

Image Resizer

Resize JPG, PNG and WebP images to exact pixel dimensions privately in your browser.

TOOL 03

Image Cropper

Crop JPG, PNG and WebP images to exact coordinates and dimensions without uploading them.

TOOL 04

JPG to PNG

Convert JPG images to PNG privately in your browser with no upload, account or watermark.

TOOL 05

PNG to JPG

Convert PNG images to smaller JPG files in your browser. Choose quality and a background colour.

TOOL 06

WebP to JPG

Convert WebP images to compatible JPG files locally in your browser with no upload.

TOOL 07

JPG to WebP

Convert JPG images to efficient WebP files in your browser without uploading your photos.

TOOL 08

PNG to WebP

Convert PNG graphics to compact WebP images locally, with transparency preserved where supported.

TOOL 09

Rotate & Flip Image

Rotate JPG, PNG or WebP images and flip them horizontally or vertically in your browser.

TOOL 10

Social Media Image Resizer

Resize images for Instagram, Facebook, X, LinkedIn and YouTube using ready-made dimensions.

Private by design: processing happens with your browser's built-in image engine. Your files are not uploaded to Image Cosmos.

Fast tools without the clutter

Image Cosmos focuses on common image jobs: smaller files, exact dimensions, practical formats and social-ready sizes. Every tool has its own clear page, but all use the same lightweight local engine.