Free Image Compressor & Resizer
Resize photos by dimensions or percentage, compress them, convert formats, or target common file sizes such as 50KB and 100KB. Your files stay in your browser.
How to use
- Upload one or more images.
- Choose resize mode, dimensions and compression settings.
- Download the optimized files. Processing happens locally in your browser.
Drag & drop images here, or browse files
PNG, JPG, JPEG, WebP, AVIF and GIF
Resize & Compression Settings
For best results use JPEG or WebP.
Aspect ratio is preserved for width, height, percentage and maximum-dimension modes. Exact target sizes can vary slightly because image encoding is format-dependent.
Optimized Queue ()
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About This Tool
Optimize images for websites and digital projects by resizing dimensions, reducing file size and converting between common image formats. Processing is designed around browser-side handling so you can optimize files without sending the source image to a server.
How to Use It
Add one or more supported images, select a resize mode, choose compression quality or a target size, select an output format, and download the optimized result. Compare the output visually before publishing.
How the Calculation or Check Works
Image optimization balances pixel dimensions, encoding format and compression quality. JPEG and WebP are commonly useful for photographic content, while PNG can preserve lossless graphics and transparency. Exact target file sizes can vary because encoded size depends on the image.
Practical Example
A large product photograph can be resized to the dimensions actually displayed on a product page and exported as WebP to reduce unnecessary transfer size while retaining useful visual quality.
Frequently Asked Questions
Does the tool upload my images? The tool is designed for browser-side processing, so source files can remain on your device.
Can I force an exact file size? Target-size modes are approximate because image encoding produces different sizes for different source images.
Which format should I choose? The best format depends on image content, transparency requirements, browser support and desired compression.