NanoImage HomeAutomatically compress images to under 100KB in your browser. Free, private, no upload.
Changes apply on next compress. The tool always tries to stay ≤ 100KB while keeping the highest viable quality.
Upload your image and NanoImage automatically finds the best quality setting that keeps the file under 100KB. It only resizes when quality reduction alone is not enough, preserving as much detail as possible for avatars, forms and thumbnails.
Use JPG for portraits, avatars, and ID-style photos. Use WebP when you need smaller size with good visual quality. PNG may be too large for 100KB unless the image is simple. Cropping empty background helps preserve face/detail clarity.
Profile avatars, job application portals, school or university systems, online forms, and small thumbnails. These scenarios commonly enforce a 100KB ceiling while still expecting recognizable faces or clear icons.
Upload your image to the Compress Image to 100KB tool. NanoImage automatically searches for the highest quality that fits under 100KB, and resizes only when necessary. Download when the result shows success.
Yes for most online forms, school portals, job applications and small thumbnails. It is a common limit for profile pictures and user uploads where bandwidth or storage is constrained.
NanoImage tries the highest possible quality first. If the original is very large or complex, some resizing may occur. For portraits and simple photos the result usually stays sharp at 100KB.
JPG is usually best for portraits and avatars. PNG is only suitable for very simple graphics or when transparency is required; it often exceeds 100KB for photos.
Yes. Upload multiple files and the tool will process each independently to stay under 100KB. Download them individually or as a batch where supported.
The tool will tell you it is already under target. You can download the original or choose to compress further for an even smaller file.