Image Compressor
Compress images in your browser without uploading them. Drop in a photo, adjust quality and maximum size, and download a smaller JPG or WebP file that loads faster on your website, blog, or social post.
Your compressed image preview and size comparison will appear here.
Privacy: your file is processed locally in your browser with canvas and FileReader. It is never uploaded to a server.
How to use
- Choose an image file from your device.
- Set quality (80 is a good balance) and an optional maximum width or height.
- Click Compress image and compare the original and compressed sizes.
- Click Download compressed image to save the smaller file.
Does compressing an image reduce its quality?
Lossy compression can reduce fine detail, especially at low quality settings, while higher settings keep most visible quality. Use a quality of 80 to 85 for photos, check the preview, and keep your original file so you can retry with a different setting if needed.
Are my images uploaded to a server?
No, your images never leave your device. This compressor reads the file with your browser and draws it to a canvas locally, then exports the smaller file for download. That private approach is ideal for personal photos, client work and files you do not want sent online.
What formats can I compress and download?
You can open JPG, PNG, WebP and most common browser image formats, then export as JPEG or WebP. JPEG is best for photographs, while WebP usually gives smaller files at similar quality. PNG originals converted to JPEG will lose transparency, so check the preview first.
Why is my compressed file sometimes larger?
A file can grow if the original was already heavily optimized, or if you raise dimensions or choose a high quality setting. Try quality 75 to 85, set a sensible maximum width, and choose WebP for the best size saving on most photographs and web graphics.
Related tools
Image Resizer to set exact dimensions first, Image Converter JPG PNG WebP to change formats, and Favicon Generator for small site icons.