Free Image Compressor — Reduce Image Size Online
Compress JPG, PNG, and WebP images online for free. Batch compress multiple images at once. Runs in your browser, no upload, no signup.
Drop images here or click to upload
Supports PNG, JPG, WebP, GIF — batch upload allowed
Compress JPG, PNG, and WebP images directly in your browser. Batch process multiple files at once, adjust quality and dimensions, and download compressed images instantly. No upload, no signup, your images never leave your device.
How to use Image Compressor Online — Reduce Image File Size Free
- Drag and drop one or more images into the upload area, or click to browse.
- Choose the output format (JPG for smallest files, WebP for best ratio, PNG for lossless).
- Adjust the quality slider and optionally set a max width to resize large images.
- Click Compress, then download individual images or all at once.
Features
- Batch compress multiple images at once.
- Supports JPG, PNG, and WebP output formats.
- Adjustable quality slider from 10% to 100%.
- Optional max width to resize images during compression.
- Shows original vs compressed size and total space saved.
- All processing happens in your browser — no upload, fully private.
Examples
Compress a 5MB photo for email
photo.jpg (5.0 MB, 4000×3000)
photo-compressed.jpg (420 KB, 1920×1440, 92% smaller)
Batch compress PNG screenshots
3 screenshots (8.2 MB total)
3 compressed files (1.1 MB total, 87% smaller)
Privacy
Your images are processed entirely in your browser. Nothing is uploaded to any server.
FAQ
Is this image compressor private?
Yes. All compression happens in your browser using the Canvas API. Your images are never uploaded to any server.
What is the best format for compression?
JPG produces the smallest files for photos. WebP offers the best quality-to-size ratio and is supported by all modern browsers. PNG is lossless and preserves transparency but produces larger files.
Does compression reduce image quality?
Yes, JPG and WebP compression is lossy. A quality setting of 75% is a good balance between file size and visual quality for most use cases. Use PNG if you need lossless compression.
Is there a file size or quantity limit?
No. Since processing happens in your browser, there are no server-side limits. However, very large images may take longer to process depending on your device.