Image Compressor

Use our free image compressor to reduce your image file sizes without losing visible quality. Supports JPG, PNG, and WebP. All compression happens in your browser — your images are never uploaded to any server. No sign-up required.

FreeAlways free to use

In-Browser100% private

JPG PNG WebP3 formats supported

No sign-upNo account needed

Image compressor infographic showing how to reduce image file size online

Compress your images — free and private

🖼️

Drop images here or click to select

Supports JPG, PNG, WebP — up to 20 images at once

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Compression quality 80% Recommended — visually identical to original

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How to use this free image compressor

Compressing your images takes less than 30 seconds. Our free image compressor processes everything directly in your browser using the Canvas API — your images are never sent to any server, which means 100% privacy and instant results.

Drop your images onto the tool or click Select Images to choose JPG, PNG, or WebP files.

Adjust the quality slider — 80% is recommended for the best balance of quality and size.

Click Compress Images and see the before/after file sizes instantly for each image.

Click Download on each image or Download All to save every compressed file at once.

Why image compression matters for your website

Images are typically the largest files on any webpage — often accounting for 60–80% of total page weight. Uncompressed images slow down your website, hurt your Google rankings, and cause visitors to leave before your page even finishes loading. Our image compressor solves this by reducing file sizes by up to 80% with no visible quality loss.

Google's Core Web Vitals — specifically the Largest Contentful Paint (LCP) metric — directly measures how fast your largest image loads. A slow LCP score hurts your search rankings. Furthermore, research by Google consistently shows that 53% of mobile users abandon pages that take more than 3 seconds to load. Compressing every image before uploading it to your website is therefore one of the highest-impact SEO improvements you can make.

How much can you save?

A typical smartphone photo (4–8 MB) can be compressed to under 500 KB with no visible quality change — a saving of over 90%.
A blog feature image (1–2 MB) can typically be reduced to 80–150 KB at 80% quality — a saving of 85–92%.
A product photo for an e-commerce site (500 KB–1 MB) can be reduced to 50–100 KB — making your store pages significantly faster.

80% quality is the sweet spot for web images. At this setting, the human eye cannot distinguish the compressed image from the original — but the file size is typically 50–80% smaller.

JPG, PNG, and WebP — which format should you use?

Choosing the right image format before compressing can make an even bigger difference than the compression setting itself. Our image compressor supports the three most widely used web image formats, each with different strengths.

Photos and general use

JPG / JPEG

The most widely used format for photos and general web images. JPG uses lossy compression, meaning it permanently discards image data that the human eye typically cannot detect. It produces the smallest file sizes for photographic content. JPG does not support transparency. Use JPG for blog images, hero images, and product photos.

Logos and graphics

PNG

PNG uses lossless compression, meaning no image data is discarded — which makes files larger than JPG but preserves every pixel perfectly. PNG supports full transparency, which makes it the correct choice for logos, icons, and graphics with transparent backgrounds. Use PNG when you need sharp edges and transparency support.

Best for web performance

WebP

WebP was developed by Google specifically for the web and offers 25–35% better compression than JPG at the same visual quality. It supports both lossy and lossless compression, and it supports transparency like PNG. All modern browsers support WebP. Additionally, Google PageSpeed Insights recommends serving images in WebP format for better Core Web Vitals scores.

Never compress an image that has already been compressed and re-save it as JPG. Each generation of JPG compression adds more quality loss. Always start from the original high-quality file when using an image compressor.

Frequently asked questions about image compression

Does image compression reduce visible quality?+

At 80% quality — which is our recommended default setting — the human eye cannot distinguish a compressed image from the original in normal viewing conditions. Quality loss only becomes noticeable below 60% for most images. The exact threshold depends on the image content: photos with gradients and smooth tones are more forgiving, while images with sharp text, fine lines, or solid flat colors may show artifacts at lower settings. For web use, 75–85% is the accepted standard across professional web development.

Are my images uploaded to a server when I use this tool?+

No — all image compression happens entirely within your browser using the HTML5 Canvas API. Your images are never sent to any server, never stored anywhere outside your device, and never transmitted over the internet. This makes our free image compressor 100% private and secure. You can use it with confidence on sensitive images, client photos, or any content you would not want to upload to a third-party server.

What quality setting should I use for web images?+

For most web images — blog posts, product photos, hero images — 80% quality is the recommended setting. At this level, file sizes are typically 50–80% smaller than the original with no perceptible quality loss. If you are compressing images for print or high-resolution display, use 90–95%. If you need the absolute smallest file size and quality is secondary — such as thumbnail images or email attachments — you can go as low as 60%. Below 60% quality degradation becomes noticeable to most viewers.

What is the ideal image file size for a website?+

Google's PageSpeed Insights and web performance guidelines recommend keeping individual images under 200 KB for standard content images and under 500 KB for large hero images. Blog post feature images should ideally be 80–150 KB. Product images for e-commerce should be 50–100 KB. Full-width background images can be up to 300–500 KB if they are high resolution. As a general rule, if any single image on your page exceeds 500 KB, it should be compressed before publishing.

Can I compress multiple images at once?+

Yes — our free image compressor supports batch compression. You can select or drop up to 20 images at once and compress them all in a single click. Each image is processed individually at the same quality setting, and you can download them individually or all at once with the Download All button. Batch compression is especially useful for website owners optimizing a large number of blog or product images at one time.

Does compressing images help with SEO?+

Yes — image compression has a direct and measurable impact on SEO. Google's Core Web Vitals include Largest Contentful Paint (LCP), which measures how quickly the largest image on a page loads. A slow LCP score negatively affects your search rankings. Additionally, faster pages have lower bounce rates, and Google's algorithms treat low bounce rates as a positive engagement signal. Furthermore, Google PageSpeed Insights specifically flags oversized images as a ranking opportunity and recommends serving them in compressed WebP format.

This image compressor processes all images locally in your browser using the HTML5 Canvas API. No images are transmitted to any server. Downloaded files are compressed versions of your originals — always keep a backup of original files before compressing. Results may vary depending on image content, format, and browser.