Image Optimizer
Compress JPEG, PNG, or WebP images and resize them without leaving the browser.
Original
Optimized
Savings
Preview
No image yet.
Why use this tool
01Shrink image file size with WebP, JPEG, or PNG output, set a quality target, and resize by max width — all client-side.
Image Optimizer compresses and reformats JPEG, PNG, and WebP files locally using the browser Canvas.
Use it before uploading photos, posting marketing assets, or shipping web images where payload size matters.
How to use
02Quick checks before you copy
03Confirm the input is the format you intended.
Scan the result before using it in a document, URL, config, or message.
Copy only the output you need.
Tips & Tricks
- 01Keep an original copy
Optimization can change compression settings. Keep the original file until you have opened the optimized output and confirmed the size and visual quality tradeoff.
FAQ
04Is my image uploaded to a server?
No. The image is read into the current tab and compressed with Canvas. Nothing leaves your browser.
Which format should I pick?
WebP gives the best compression for photos and UI assets. Use JPEG for compatibility and PNG when you need lossless output.
Does quality affect PNG output?
No. PNG is lossless, so the quality slider is ignored. Reduce dimensions with max width instead.
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