How to Reduce Image Size to 100 KB (or 50 KB, 20 KB)
Job portals, government forms, exam registrations and visa applications often say "photo must be under 100 KB" — or 50 KB, or 20 KB. A phone photo is usually 2–5 MB. Here is how to close that gap quickly.
The fast way: use a target size
- Open the PixNudge image compressor.
- Choose Target size.
- Type the limit in KB, or click one of the presets: 20, 50, 100, 200 or 500 KB.
- Add your photo and download the result.
PixNudge tries different quality levels and picks the highest quality that still fits under your limit. If even the lowest quality is too large, it scales the image down step by step until it fits. All of this happens in your browser — the photo is never uploaded.
How small can a photo get and still look good?
That depends mostly on its dimensions:
| Target | Typical dimensions that still look good |
|---|---|
| 500 KB | 2000–3000 px wide |
| 200 KB | 1500–2000 px wide |
| 100 KB | 1000–1500 px wide |
| 50 KB | 600–1000 px wide |
| 20 KB | 300–600 px wide (passport-style photos) |
If a form also specifies dimensions, such as "200 × 230 pixels", resize the photo to that size first. A small image needs very little compression to meet the limit, so it stays sharper.
Tips for tiny file sizes
Crop first. Removing background around a face or document reduces the pixels to store.
Use JPG for photos. Most forms expect JPG. If the form accepts WebP, it reaches the same size at higher quality.
Avoid noisy photos. Pictures taken in low light contain grain, which is expensive to store. A well-lit photo compresses much better.
Do not convert screenshots of documents to tiny JPGs. Text becomes blurry. For documents, try PNG first — with few colors it can be very small.
KB or KiB?
Some websites count 1 KB as 1,000 bytes, others as 1,024 bytes. PixNudge uses 1,000 bytes, so a "100 KB" result is at most 100,000 bytes and will pass either kind of check.
Summary
To meet an upload limit, choose Target size in the compressor, enter the limit and let it find the best quality automatically. For very small limits, resize or crop the photo first for the sharpest result.