QuickKit / optimize
Free Image Compressor
Compress JPEG, PNG, and WebP images for free in your browser. Choose an output format and quality, then download a smaller image without uploading it.
Private by default: your file never leaves this device. QuickKit does not upload or store it.
PNG is lossless. Converting to JPEG removes transparency by placing it on white.
Used for JPEG and WebP. Higher values preserve more detail and usually create a larger file.
The original dimensions stay intact.
Your compressed preview and file details will appear here.
A clear local workflow
Compress JPEG, PNG, or WebP files.
- 1. Choose an image. Inputs are limited to 10 MiB.
- 2. Set the output. Pick JPEG, PNG, or WebP and adjust lossy quality when supported.
- 3. Download. The browser creates the result and keeps the original dimensions.
PNG output is lossless. JPEG and WebP use the selected quality; converting a transparent image to JPEG places transparency on white.
Before you start
Image compression questions.
Which image formats can I compress?
QuickKit accepts JPEG, PNG, and WebP images up to 10 MiB per input file.
Does JPEG keep transparency?
No. When you choose JPEG, transparent areas are placed on a white background. PNG can preserve transparency.