Compress Images — Free, No Upload
Runs entirely in your browser. Nothing is sent to any server.
Quality
Max Dimension
Why compress images
A photo from a modern phone is 3–6 MB. That's fine in your camera roll but causes real problems elsewhere — slow page loads, email rejection, form upload failures, and storage costs. Compression brings photos to 200–500 KB with no visible difference on screen, making them practical to share, upload, and store.
Common use cases
Website and blog images
Large images are the most common cause of slow page loads. Compressing photos before uploading to WordPress, Webflow, or any CMS directly improves Core Web Vitals and Google ranking.
Email attachments
Most email providers cap attachments at 10–25 MB. Compressing a batch of product or event photos keeps emails deliverable and fast to open on mobile.
Government and institutional forms
Online portals for government applications, university admissions, and scholarship submissions often cap uploads at 200–500 KB per document or photo.
E-commerce product listings
Marketplaces like Amazon, Flipkart, and Meesho have maximum image sizes. Smaller images also load faster for buyers on slow connections.
How it works
The tool uses the browser's native Canvas API to re-encode the image at a lower quality setting. For JPEG and WebP output, this reduces file size by encoding only the perceptually important parts of the image. PNG compression uses lossless deflate, so quality is preserved while reducing redundant data. No external libraries or server calls are involved.
Frequently asked questions
Does image compression reduce visible quality?
At moderate compression (60–85% quality), the difference is invisible on screen. Only at very high compression does softening appear. For web use, you typically cannot tell the difference.
How much smaller will my image get?
Usually 50–80% size reduction with no visible quality loss. A 4 MB phone photo typically compresses to under 500 KB. PNG files with large solid-colour areas compress more than detailed photographs.
Can I compress multiple images at once?
Yes — you can add multiple images and compress them together. Each is processed independently in your browser.
What formats are supported?
Input: JPEG, PNG, WebP, BMP. Output: JPEG or WebP, both of which achieve significant size reductions.
Is it free? Do my images get uploaded?
It's completely free. Your images are never uploaded — everything runs locally in your browser. You can verify this by checking the Network tab in DevTools while compressing.