1
Upload an image file
Drag and drop supported image files into the upload area, or click to browse files from your device.
- The file picker accepts JPG, PNG, and WebP images
- You can add multiple supported images before running compression
Compress Images Online
Reduce JPG, PNG, and WebP image file sizes directly in your browser using client-side Web Workers. Adjust the quality percentage slider to balance file weight and visual fidelity without uploading photos to an external server.
Compress your JPG, PNG, and WebP images instantly directly in your browser. Our Image Compressor reduces file size without losing visible quality, making your website faster and saving storage space.
No installation
Fast processing
Browser friendly
Privacy-aware
Features
In-browser compression: images are processed locally using multi-threaded Web Workers
Adjustable quality slider (1% to 100%) to target optimal file size vs visual clarity
Supports JPG, JPEG, PNG, and WebP formats up to 50 MB
Side-by-side file size metrics showing exact original KB, compressed KB, and percentage saved
Strips non-essential EXIF metadata to minimize image payload for faster web performance
Free to use with client-side batch image compression support
How It Works
2
Choose available compression settings
Use the quality slider and available max-width setting to balance file size and appearance.
- Lower quality often reduces file size more, but may affect image appearance
- Compression results depend on the source image and settings
3
Start compression
Click Compress Images and wait while the browser processes each image.
- Each image is processed independently
- Some files may not get much smaller or may fail to process
4
Download the compressed image if available
Review the original and compressed file sizes, then download each available result.
- Exact final KB size is not guaranteed
- Compare the result before using it in a website, email, or upload form
Common Use Cases
Web Performance & Core Web Vitals
Compress hero banners and blog images to reduce page weight, lower Largest Contentful Paint (LCP), and boost SEO rankings.
E-commerce & Product Catalogs
Optimize high-resolution product photos for online stores to speed up catalog browsing and improve mobile conversion rates.
Email Newsletters & Social Media
Shrink graphics and photos for email marketing campaigns to prevent slow message loading and reduce data usage.
Tips & Best Practices
Exact KB targets are not guaranteed
Searches like compress image to 50KB, 100KB, or 200KB are common, but this tool uses quality and size settings rather than an exact target-KB control.
Compression results vary
Images that are already optimized, very small, transparent, or highly detailed may not shrink much without visible quality changes.
Browser-based processing
Compression runs in your browser with a Web Worker, so performance can depend on your device, browser, file size, and batch size.
Image Compressor
Why compress images?
Large image files slow down website loading and consume storage. By optimizing images before publishing or emailing, you improve page load performance and reduce bandwidth consumption.
Features
- 100% private: Processing executes in your browser Web Worker
- Batch compression support for multiple files
- Preserves original pixel dimensions
- Adjustable quality control
Frequently Asked Questions
Are my images uploaded to your servers during compression?
No. All compression logic runs in dedicated Web Worker threads inside your browser. No image data is transmitted over the internet.
Can I compress images to an exact target file size (e.g., exactly 100 KB)?
The tool uses quality quantization and resolution constraints rather than an arbitrary target byte cap. Adjust the quality slider downward in increments (e.g., from 80% to 65%) to reach your desired file weight.
Why do some PNG images not shrink significantly?
PNG is a lossless format. Images that already contain optimized color palettes or simple vector illustrations cannot be compressed further without converting to lossy formats like WebP or JPG.
What quality setting should I choose?
A setting between 75% and 85% typically provides significant file size reduction with virtually no noticeable difference in visual clarity on standard displays.
How do I download compressed images?
Once compression finishes for each image in your list, click the download button on that image card to save the optimized file directly to your device.