Image Compressor
Reduce image file size by up to 80% without losing quality. Smart PNG quantization (like TinyPNG), JPG optimization, and WebP conversion. Free, private, and runs locally.
Key Features
Private & Secure
Your photos never leave your device. All compression happens locally in your browser.
Blazing Fast
Powered by advanced WebAssembly algorithms (UPNG & Pako). Get near-native compression speeds.
Batch Processing
Drag and drop a folder full of images. Review the size savings for each and download everything in a single ZIP file.
How to use
1
Upload Images
Drag and drop your PNG, JPG, or WebP files into the compressor. Supports batch uploading.
2
Choose Quality Level
Adjust the quality slider. For PNGs, this controls the number of colors (quantization). For JPGs, it controls compression ratio.
3
Review & Download
Check the 'Saved' percentage to see how much space you saved. Download individual files or a ZIP archive.
Which Format Should I Choose?
JPG - Best for Photos
Complex colors, real-world scenes. No transparency.
PNG - Best for Graphics
Logos, screenshots, flat art. Supports transparency.
WebP - Best for Web
Superior compression for both photos and graphics.
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Helpful guides
The Complete Guide to Image Optimization for Web Performance
Learn how to optimize images for the web without losing quality. Improve your website speed, SEO rankings, and user experience with these proven techniques.
Instagram Image Sizes & Compression Tips (2025 Guide)
Master Instagram's image requirements. Learn the optimal sizes for posts, stories, and reels, plus how to compress images to prevent blurriness and slow loading.
The 2025 Social Media Image Size Cheat Sheet
Your complete guide to image sizes and aspect ratios for all major social media platforms in 2025, including Instagram, Facebook, X (Twitter), LinkedIn, and TikTok. Get the optimal dimensions for posts, stories, headers, and profiles.
FAQ
Will my image look blurry?
Not if you use the right settings. For PNGs, our quantization algorithm is designed to be "visually lossless," meaning the human eye cannot easily distinguish the changes. For JPGs, keeping the quality above 70-80% typically ensures a sharp image.
Are my files uploaded to your server?
No. This is a client-side tool. The compression logic runs entirely within your browser using JavaScript and WebAssembly. Your images never leave your computer.
Why is the file size larger after compression?
This rarely happens, but if your original image was already highly optimized (e.g., using a tool like Photoshop's "Save for Web"), re-compressing it might add a small amount of overhead or metadata.