Does Twitter compress images?
Yes, Twitter converts most uploads to JPEG and compresses them. Images under 900px wide uploaded as PNG are kept as PNG without recompression. For photos, upload JPEG at exactly 1600x900.
What is the best format for Twitter images?
For photos, use JPEG at 85-90% quality. For screenshots and graphics with text, use PNG under 900px wide to avoid JPEG artifacts. Twitter preserves PNG quality at smaller sizes.
What is Twitter's image file size limit?
Twitter accepts images up to 5MB (photos) and 15MB (animated GIFs). For best quality, pre-compress to under 2MB at 1600x900 pixels.
