Online Image Compressor
– Reduce Image Size Fast
Compress JPG, PNG and WebP images directly in your browser.
Your files never leave your device. No sign-up required.
Drop images here or browse files
Supports JPG, PNG, WebP · Multiple files at once
How to Compress Images in 3 Steps
Upload Images
Drag & drop or click to select JPG, PNG, or WebP files. You can upload multiple images at once.
Adjust Quality
Use the quality slider (1–100) to balance file size and visual quality. 70–80 is optimal for most uses.
Download
Click "Compress All" then download individual files or all at once as a ZIP archive.
Why Use ImgTools?
100% Private
All compression happens in your browser using WebAssembly. Your images are never uploaded to any server.
Lightning Fast
Client-side processing means no waiting for uploads or server queues. Compress dozens of images in seconds.
Full Control
Fine-tune compression quality from 1 to 100. Preview before/after and see exact savings in KB.
Batch Processing
Upload and compress dozens of images simultaneously. Download them all at once with one click.
Multiple Formats
Supports JPG, PNG, and WebP — the most widely used image formats for web and email.
Completely Free
No account needed, no watermarks, no hidden limits. ImgTools is free forever.
Frequently Asked Questions
Is this image compressor free?
Yes, ImgTools is completely free to use with no limits on file size or the number of images. There are no sign-ups, subscriptions, or hidden fees.
Does this tool upload my images to the server?
No. All compression is performed entirely in your browser using JavaScript. Your images never leave your device and are never sent to any server. This makes ImgTools one of the safest image compression tools available.
How to reduce image size without losing quality?
Set the quality slider between 75 and 85. At this range, compression can reduce file size by 50–70% while keeping the image visually lossless to the human eye. For web use, 80% quality is the sweet spot — viewers cannot notice any difference compared to the original.
How to compress images for email?
For email attachments, we recommend setting quality to 60–70 to keep images under 200 KB each. Most email clients work best with images under 1 MB total. Upload your photos, adjust the slider to 65, click "Compress All", and download.
How to compress images for a website or Shopify?
For websites and e-commerce platforms like Shopify or WordPress, aim for images under 150 KB. Set quality to 75–80 for product photos. Smaller images load faster, improve Google PageSpeed scores, and reduce bounce rates.
What image formats are supported?
ImgTools supports JPG (JPEG), PNG, and WebP formats. These cover the vast majority of images used on the web, in email, and on social media.
Is there a file size or quantity limit?
There are no server-side limits since all processing happens in your browser. Practical limits depend on your device's RAM. Most modern computers can comfortably handle batches of 20–50 high-resolution photos.