Social still JPEG: platforms eat fine captions first—reserve safe zones and type size before export
`social-gif-jpg` is for feed operators: platforms recompress JPEG once more and fine subtitles die first. Vertical vs square safe zones differ—faces and copy must dodge UI scrims. When motion becomes a still, users assume that frame is the whole story, so the selling point must live inside it.
`social-gif-jpg`: private test posts, download the CDN object, diff against source, score readability
- Export to each platform’s template: mark title safe zones, bottom gesture dead zones, and corner badges; pick the frame where captions are fully visible and the subject is intact—not necessarily frame 0.
- Post a private test, download the platform CDN object, and diff against your master; watch for automatic desaturation passes.
- Register every asset with a triple of platform + aspect + frame rule; postmortem which classes get crushed hardest and adjust stroke weight next time.
Social JPEG Q&A: safe areas, recompression, one asset stretched across landscape and vertical
Same JPEG looks crisp on Android and soft on iOS—is that color tags or a second client resize?
Compare delivered pixel width/height and `Content-Type` across devices; iOS sometimes force-scales ultra-wide heroes. Confirm sRGB 8-bit so a rare profile is not remapped wrong on only one stack.
One landscape JPEG gets cropped into vertical feed and captions clip—fix in design or media buying?
Ship paired compositions up front or bake a vertical-safe center column; forcing the correct placement ID beats complaining about algorithmic crops after spend is live.
Brand colors look washed in the preview—profile mismatch or platform-wide desaturation?
Download the CDN-delivered file and compare color statistics to your master; if everything is duller, compensate in design or accept the house look. Do not judge solely by phone brightness sliders.
CTR dropped after swapping motion for a still—is that motion expectation or weak cover copy?
Run a small A/B: stills must carry more story or contrast in one frame; also watch dwell time compensating CTR. Write channel-specific guidance instead of blindly reverting to GIF.
Same JPEG is sharp domestically but soft overseas—what should we check?
Verify regional CDNs and different recompression tiers; also rule out MTU/proxy issues on large payloads. Fetch `content-length` and dimensions per region.