🖼️ Stuck White Background + Telegram Image Compression — Image Processing Pitfall Collection
Images | Frontend | 2026-03-08 🖼️ Stuck White Background and Telegram Image Compression — Python Pillow removes white backgrounds reliably. To send transparent PNGs on Telegram, always use Send as File; direct image sending compresses to JPG and destroys transparency.
🖼️ Stuck White Background + Telegram Image Compression — Image Processing Pitfall Collection
🔴 Problem: Logo had white/checkerboard background; CSS filter invert looked terrible on complex logos. Telegram auto-compresses PNG to JPG, destroying transparency.
✅ Fix: Python Pillow library removes white backgrounds (r>185 && g>185 && b>185 → transparent). To send transparent PNGs on Telegram, use "Send as File" — never just drag the image.
🛡️ How to Avoid:
1. Use Python Pillow to remove white backgrounds — CSS filter is unreliable
2. To send transparent PNGs on Telegram, always use "Send as File" — direct image sending compresses to JPG
3. CSS fade-in animations may not trigger on mobile — showing directly is safer
4. Do not CSS-invert partner logos — use opacity + official originals
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