Compress Image to 20KB (Quick Guide)
This page compresses your photo to about 20 KB using in‑browser JPEG encoding. Nothing is uploaded—everything runs on your device.
1) Core idea
Target size = 20 × 1024 bytes. We binary‑search the JPEG quality until the encoded image lands near the target. If the photo is extremely detailed or large, 20 KB may be unreachable at any quality.
2) Flow
- Upload or drag & drop your image.
- Auto‑compress tries to hit ~20 KB via quality tuning.
- Use the slider preview (above) if you want to fine‑tune quality.
- Download the compressed JPEG.
3) Sanity checks
- Very large photos (e.g., multi‑MP) may not reach 20 KB—consider resizing first.
- Highly textured/noisy images compress less than flat backgrounds.
- Canvas export strips metadata (EXIF), which slightly reduces size and protects privacy.
4) Shortcuts
- Crop or resize before uploading to hit 20 KB more easily.
- Use clean backgrounds and fewer gradients for smaller files.
- Tool outputs JPEG; transparency will be flattened to a solid background.
5) Pitfalls
- Text/screenshots can look blocky at very low quality—resize instead of pushing quality too low.
- PNG logos with transparency will lose transparency when saved as JPEG.
- If you still exceed 20 KB after auto‑compress, the image likely needs downsizing.
6) Micro examples
- Passport headshot 600×600 → typically 14–20 KB at medium quality.
- Landscape 3024×4032 → may not reach 20 KB without resizing first.
7) Mini FAQ
- How close to 20 KB? Usually within ~14–20 KB due to JPEG step sizes and quality search.
- Is it safe? Yes—processing happens locally in your browser.
- Formats? Any image can be uploaded; output is JPEG.
8) Action tip
If you can’t meet 20 KB, resize the longest side to ~800–1200 px, re‑upload, then auto‑compress again.