compare
LinkDigest vs Supadata
A dated, sourced comparison. Supadata covers Instagram and Facebook and is cheaper per minute of generated transcript; LinkDigest reads Xiaohongshu and Douyin, OCRs every image, needs no cookies from you, and does not charge for a failed read.
Competitor rows from their public docs on 2026-09-12; tell us if something changed. Supadata rows from supadata.ai's public docs and pricing page. LinkDigest rows are computed from the same constants as the pricing page and the coverage table. “—” means not stated in what we checked.
| Feature | LinkDigest | Supadata |
|---|---|---|
| Xiaohongshu / Douyin | Yes — Xiaohongshu image and video notes; Douyin video and 图文 image notes. | No. |
| Other platforms | YouTube, TikTok, X, Instagram (reels and photo posts), Bilibili (since 2026-10-24), web pages. | Instagram and Facebook, among others — see their docs. |
| OCR of images and frames | Yes — every image described and read for on-screen text; frames sampled from video. | No. |
| Transcript (ASR) | Yes — native captions where a platform publishes them, otherwise OpenAI's gpt-4o-mini-transcribe, as sentences with estimated start times. | Yes — generated (Whisper) transcript, 2 credits per minute. |
| Cookies or login from you | Xiaohongshu: no login, no cookies. Douyin runs on our session; you supply nothing. | Hosted API; nothing to supply. |
| Batch | Yes — up to 50 links per call (POST /api/v1/digest/batch), duplicates merged, cached links free. | No. |
| Webhooks | Yes — a batch POSTs its summary to your URL when it finishes, HMAC-signed. Single links return a job id you poll. | No — async by polling. |
degraded field | Yes — a degraded array names what did not read fully. | — |
| Failed reads free | Yes — a digest that read nothing is not charged. | — |
| Cached links free | Yes — anything anyone already digested is free. | — |
| Price: a typical image note | 1 credit ≈ $0.018 ($9 for 500 credits a month) | — (no image reading) |
| Price: a 10-minute video, generated transcript | 11 credits ≈ $0.198 (1 per started minute, plus the base credit) | 20 credits ≈ $0.113 ($17 for 3,000 credits (Pro)) |
Where Supadata is better
- Facebook, which LinkDigest does not read. (Instagram reels and photo posts are read since 2026-10-24; carousels give only their first slide.)
- Cheaper per minute of generated transcript: about $0.113 for ten minutes at Pro against our $0.198. If all you need is a YouTube transcript, that is the cheaper call.
- More credits per dollar on paper. A credit is not the same unit on both sides, so compare the two worked prices above, not the plan sizes.
Where LinkDigest is better
- Xiaohongshu and Douyin at all — image notes included, which is most of Xiaohongshu.
- OCR: the substance of an image note is in the images. Supadata returns no image reading; here every image is described and read.
- Nothing of yours to supply or to get banned. Xiaohongshu is read with no account; Douyin runs on our session and its rot is our problem.
- Honesty in the response: a
degradedfield names what failed, and a digest that read nothing costs nothing and is retried within the hour rather than cached for a month. - Cached links are free for everyone, forever.
try the difference
One call, on a real link
curl -X POST https://linkdigest.dev/api/v1/digest \
-H "Authorization: Bearer ld_live_..." \
-H "Content-Type: application/json" \
-d '{"url": "https://xhslink.cn/o/...", "format": "markdown"}'