Image Compressor: Reduce Image Size to Any KB
Your files never leave this device. Images are compressed in your browser and never uploaded. Re-saving also strips hidden photo data such as GPS location and camera details.
Compression
75% is hard to tell apart from the original for most photos. Lower means smaller files.
Image compressor
Add images
- Mode
- 75% quality
- Longest side
- Unchanged
- Format
- Same as original
Compressed on your device. Nothing is uploaded.
How this works
Images are compressed by your browser's own image encoder, on your device. Each photo is drawn onto an off-screen canvas at the chosen size and saved again as JPG, WebP or PNG. Nothing is uploaded, and re-saving drops hidden photo data (EXIF), including the GPS location many phones attach.
Quality level re-saves every image at one setting: 75% is hard to tell from the original for most photos and typically saves well over half the file size. If re-saving would make a file bigger at the same size and format, the original is kept.
Target file size searches for the highest quality that fits under your limit, testing up to eight quality levels per image. If even the lowest quality is too big, the image is scaled down by 20% at a time until it fits. Resizing does the most for phone photos, which are often 4,000 pixels or more across; 1,920 pixels is plenty for screens and most online forms.
PNG is lossless, so quality doesn't apply to it; only resizing or switching to JPG or WebP makes a PNG photo much smaller. JPG has no transparency, so transparent areas turn white when a PNG is saved as JPG. Safari can't create WebP files, so the WebP option appears only in browsers that can.
FAQs
How do I reduce a photo to under 200 KB?
Choose Target file size, pick 200 KB and add the photo. The tool finds the highest quality that fits under 200 KB and, if needed, scales the image down until it does, then you download the result.
Are my images uploaded to a server?
No. Compression runs in your browser using its built-in image encoder, so the photos never leave your device. It also removes hidden EXIF data such as GPS location when it re-saves them.
What quality should I use?
75% is a good default for photos: the difference is hard to see and the file is usually less than half the size. Go to 60% for very small files, and use 85% to 90% if the image will be printed or zoomed.
How do I resize an image without losing quality?
Pick a longest side such as 1920 px and set quality to 90% or more. Fewer pixels make the biggest difference to file size, while a high quality setting keeps the remaining detail sharp. Images are never enlarged.
Can I compress many images at once?
Yes. Add as many images as you like; each is compressed with the same settings, and Download all saves them together in one ZIP file.