Compress JPEG to 20-50 KB Online Free

1) Core idea

File size stems from pixels × compression quality. To hit 20–50 KB, balance slight downscaling with JPEG quality between roughly 45–85% depending on image complexity.

2) Flow

1. Select a target: 20, 25, 30, 35, 40, 50 KB or custom.
2. Upload your JPEG and optionally crop.
3. Click Auto Compress to get close to the target.
4. Fine-tune with the slider; tiny quality tweaks change KB a lot.
5. Download once status shows within ~5% of target.

3) Quick checks

• Headshot 400×400 at ~70% ≈ 25–40 KB.
• Simple photo 300×300 at ~75% ≈ 18–30 KB.
• Detailed scenes may need a small resize (−10–20%).

4) Shortcuts

• If just over target, drop quality by 3–5 points.
• If way over target, reduce width/height by 10–15% first.
• Crop excess background; keep the subject prominent.

5) Pitfalls

• Aggressive recompression adds banding—work from the original.
• For logos/text, JPEG may blur edges—prefer PNG/WebP if allowed.
• Very small targets need both resize and quality tuning.

6) Micro examples

7) Mini FAQ

• Accuracy? Auto typically lands within ~5%; adjust slider for exactness.
• Privacy? 100% client-side; no uploads.
• Quality? Prefer smaller dimension reductions over extreme quality loss.

8) Action tip

Use Auto → nudge quality 2–4 points → if still high, reduce dimensions by ~10% for a clean, sharp result in the 20–50 KB range.