Compress Images to 10–20 KB: Fast, Exact, Reliable
1) Core idea
Target size (KB) depends on pixels and quality. Two levers control size: quality (JPEG/WebP compression) and dimensions (width × height). Halving both width and height ≈ quarters the size.
2) Flow to hit 10–20 KB
- Select 10, 15, or 20 KB target.
- Upload your image (JPG/PNG/WebP).
- Use Auto Compress to get close.
- If over target, lower quality a bit or crop/resize slightly.
- Download when the status shows within ~2–5% of target.
3) Quick checks
- ID-style photo 240×320 at 70–80% JPEG ≈ 10–20 KB.
- 400×400 simple photo at ~70% JPEG ≈ 15–35 KB.
- Text/graphics often fit 10–20 KB as WebP at modest quality.
4) Handy shortcuts
- Too big? Reduce width and height by ~10–20% → big size drop.
- Prefer JPEG/WebP for photos; PNG for sharp logos/icons.
- Crop unnecessary background first; keep the subject tight.
5) Pitfalls to avoid
- Recompressing the same JPEG many times degrades quality—work from the original when possible.
- Trying to force huge images to 10 KB without resizing causes artifacts; downscale slightly.
- PNG photos are often larger than JPEG; switch formats if needed.
6) Micro examples
300×300 headshot
≈ 12–18 KB (JPEG 70–80%)
400×400 portrait
≈ 18–30 KB (JPEG ~70%)
Logo, flat colors
≈ 8–20 KB (WebP/PNG)
Busy scene
Resize 10–20% + JPEG ~65%
7) Mini FAQ
- Is it free? Yes.
- Private? 100% in your browser—no uploads.
- Best format? JPEG/WebP for photos; PNG for line art/transparency.
- Accuracy? Auto finds within a few percent; fine-tune with the slider.
8) Action tip
Use Auto first, then nudge quality down by 2–5% or crop a little to land exactly in the 10–20 KB window.