Optimize tool
Reduce Image File Size
The strongest size reductions usually come from combining sensible dimensions with an efficient output format and moderate quality. This tool provides those controls without pretending it can hit an exact byte target.
Reduce Image Size
Combine compression and resizing for smaller files. This route opens the shared Image Studio with a focused preset.
Output
WebP is a practical default for most images.
Why this format?
Choose the color for transparent areas.
Compression
A practical quality and file-size balance at the original dimensions.
Process
Process the selected images.
Image queue
0 images
Before / After
How it works
Three steps, entirely on your device
- 1
Choose your JPEG, PNG, or WebP files.
- 2
Select format, quality, and optional smaller dimensions.
- 3
Process and compare original and output sizes before downloading.
Privacy and support
Every reduction step is local. Images are held in temporary browser memory and released when you remove them or leave the page.
Supported formats
JPEG, PNG, and WebP workflows are included; available output formats are verified in the current browser.
Limitations
- An exact target size cannot be guaranteed because image complexity varies.
- PNG may not shrink when dimensions are unchanged.
- Aggressive quality reduction can create visible artifacts.
FAQ
Frequently asked questions
Can I choose an exact KB target?
Not reliably with a single pass. The tool shows the real result so you can lower quality or dimensions and process again.
What reduces size the most?
Smaller pixel dimensions often have the largest effect, followed by format choice and quality for photographic images.
Will the result always be smaller?
No. Already optimized files or lossless conversions can produce a similar or larger output, which the result row reports honestly.