Reduce JPEG quality, resize dimensions, or convert PNG to JPEG. For photos, JPEG quality 60–80 typically achieves 200KB or less. For PNGs with transparency, use PNG compression (fewer colors, metadata removal).
Image file size is determined by three factors: format (JPEG/PNG/WebP), dimensions (width × height in pixels), and quality/compression level.
**Why 200KB?**
Many platforms impose image size limits: most CMS editors (200–500KB), email attachments (under 1MB), product listings on e-commerce platforms (usually 200–500KB), and e-learning tools (often 200KB per image).
**How compression works:**
**JPEG compression** (for photos):
• JPEG uses lossy compression — it discards image data that the human eye is less sensitive to
• Quality 80 = ~80% visual fidelity, typically 50–70% smaller than uncompressed
• Quality 60 = more compression, slight visible artifacts in fine detail
• A 2 MB phone photo at Q75 is typically 150–300KB
**PNG compression** (for graphics/screenshots):
• PNG is lossless — no quality loss, but larger than JPEG for photos
• PNG-8 (256 colors) is much smaller than PNG-24 for flat-color graphics
• Metadata stripping (EXIF, color profiles) can save 20–50KB
**Resize to reduce file size:**
• A 3,000×4,000px photo has 12 million pixels; at 1,200×1,600px it has 1.92 million — file size drops roughly proportionally
This tool automatically finds the optimal quality setting to hit your target file size (200KB default).