About this Compress Image to KB tool
Government portals, university admissions, job sites and exam registrations often demand photos “under 50 KB” or signatures “between 10 and 20 KB”. Guessing quality settings in an image editor is frustrating. Just choose the size you need: the tool tries different quality levels automatically and keeps the best-looking version that fits under your limit.
If an image can't reach the target at its current dimensions, it is scaled down gently until it fits.
How to use Compress Image to KB
- Choose or drop your photo, signature or document scan.
- Click a target size (for example 50 KB) or type your own.
- Click Compress to target size.
- Download the image. The result size is shown so you can check it.
Features
Exact target
Results land under the size you set, as close to it as possible.
Best possible quality
Automatically finds the highest quality that fits.
Common presets
20, 30, 50, 100, 200 and 500 KB in one click.
Bulk
Compress several photos to the same size.
Private
Your photos never leave your device.
Typical size limits
- Passport-style photos on many application forms: 20–50 KB
- Scanned signatures: 10–20 KB
- Exam and job portal photos: 50–100 KB
- Document scans for online submissions: 100–500 KB
Need specific pixel dimensions as well? Use Resize image or Crop image first, then compress here.
Frequently asked questions
How do I reduce a photo to 50 KB?
Choose your photo, click the 50 KB button and press Compress to target size. The downloaded file will be 50 KB or slightly less.
Will my photo still look good at 20 KB?
For passport-style photos and signatures, yes. Large landscape photos may be scaled down to reach very small targets, which is normal.
Which format should I choose?
JPG is accepted by almost every form. WebP looks slightly better at the same size, but some older websites don't accept it.
Can I compress a PNG signature to KB?
Yes. PNGs are converted to JPG or WebP with a white background so they can reach small sizes.
Are my images uploaded?
No. Everything happens in your browser.