Compress images online for free with our image optimizer. Upload a JPEG, PNG, or WebP file, adjust the quality, choose a crop ratio, and download a smaller version in seconds — no software to install and no account required. Perfect for web pages, blog posts, email campaigns, and social media.
How to Use the Image Compressor
- Upload your image — click the upload area and select a JPEG, PNG, or WebP file from your device.
- Crop (optional) — choose Free, 1:1 (square), 16:9 (widescreen), or Circle crop and drag to adjust. Click Apply Crop when ready.
- Set the quality — drag the quality slider. 70–80% is the recommended sweet spot for most web images: significant file size reduction with no visible quality loss.
- Choose output format — JPEG for photos, PNG for images with transparency, WebP for the smallest file size on modern browsers.
- Set dimensions (optional) — enter a custom width or height in pixels to resize the image. Leave blank to keep the original dimensions.
- Click Compress and download your optimized image.
JPEG, PNG, or WebP — Which Format Should You Use?
Choosing the right image format before compressing can significantly reduce file size without any quality loss. Here is when to use each format.
JPEG — best for photos and complex images
JPEG uses lossy compression, which discards some image data to produce very small file sizes. It is ideal for photographs, product images, and any image with many colors and gradients. A JPEG at 75–80% quality is typically indistinguishable from the original at less than half the file size. JPEG does not support transparency.
PNG — best for graphics, logos, and transparency
PNG uses lossless compression — no image data is discarded. File sizes are larger than JPEG, but the image quality is perfect. Use PNG for logos, icons, screenshots, diagrams, and any image that requires a transparent background. Avoid PNG for photographs as the files will be unnecessarily large.
WebP — best for web performance
WebP is a modern format developed by Google that produces files 25–35% smaller than JPEG at equivalent quality, and also supports transparency like PNG. It is supported by all major browsers. Use WebP for any image on your website to improve page load speed and Core Web Vitals scores.
Why Optimizing Images Matters for Your Website
- Faster page load speed — images are typically the largest files on a webpage. Compressing them is the single most impactful change you can make to reduce load time.
- Better SEO rankings — Google uses page speed as a ranking signal. Slower pages rank lower. Compressed images directly improve your Core Web Vitals scores.
- Lower bounce rate — studies show that pages taking more than 3 seconds to load lose over 50% of visitors. Smaller images keep users on the page.
- Reduced hosting bandwidth — smaller image files mean lower data transfer costs, which matters especially on shared hosting plans.
- Better mobile experience — mobile users on slower connections benefit the most from compressed images. Google's mobile-first indexing makes this especially important.
- Email deliverability — large images in emails can trigger spam filters or cause slow rendering. Compress images before embedding them in campaigns.
Need a circular crop for a profile picture? Use our Circle Crop Image Tool. For color palette work, try the Color Scheme Generator.
Frequently Asked Questions
What is an image compressor?
An image compressor reduces the file size of an image by removing unnecessary data or applying compression algorithms. The goal is to make the file as small as possible while keeping the image visually acceptable for its intended use.
Will compressing reduce image quality?
It depends on the quality setting. At 70–80%, the difference is virtually invisible to the human eye, but the file size can be reduced by 50–80%. Setting quality below 50% may produce visible artifacts, especially in photographs.
What is the best quality setting for web images?
70–80% is the widely recommended range for website images. It provides an excellent balance of visual quality and file size. For thumbnails and background images where detail is less important, 60% is often fine.
Can I compress multiple images at once?
The current version processes one image at a time to ensure the best quality settings per image. Upload and compress each image individually for the best result.
Is my image stored on your server?
No. All compression happens directly in your browser using JavaScript. Your images are never uploaded to or stored on any server.
Is the Image Compressor free?
Yes, completely free with unlimited use and no account required.
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