BlinkHub홈으로
1 platform free · 4 in one click on signup

One draft.
Four platforms, instantly optimized.

Paste a post draft. AI rewrites it into platform-perfect title, caption, hashtags, and best time to post — tuned to each algorithm's quirks.

Pick a platform (free: 1 at a time)

Free: 5 optimizations / hour per IP. Sign up to extend.

🔓 No signup for 1 platform💳 No credit card🔒 Never auto-postsEarly access

📡 Free · Updated every 6h

Track latest algorithm changes → StreamerHub

Algorithm changes for YouTube·TikTok·IG·FB + paid per-account impact analysis on StreamerHub.

Why this tool

🎯

Per-platform algorithms

YouTube wants searchable titles. TikTok wants discovery hashtags. IG wants line-break captions. We respect each.

📋

No fluff, just publish-ready output

Title, caption, tags, hashtags, best time — formatted exactly as you'd paste into the platform.

🔒

Never auto-posts

You review and publish yourself. Free tier never asks for social account access.

💳 GET 4-PLATFORM MODE

Sign up & buy credits to optimize for all 4 platforms

Each 4-platform optimization costs 30 credits. Pick a pack — the bigger the pack, the bigger the bonus.

🔒 PayPal (global) · Bank transfer (Korea)

One draft, four different rewrites

Paste what you wrote and pick a platform. The rewrite follows that platform's conventions rather than producing one caption to spread everywhere.

YouTube

Title under 70 characters with the main keyword up front. The first two lines of the description carry the hook and keywords, because that is what shows in search. Ten to fifteen specific tag phrases that people actually type, and three to five hashtags.

Instagram

There is no SEO title here — the first line is the hook. The caption does the work, with line breaks and one clear call to action. Eight to fifteen hashtags mixing niche and medium-reach; stacking only enormous tags buries you.

TikTok

One line that stops the scroll, then a short caption. Four to six hashtags, one or two discovery-oriented and the rest specific to the subject. Trending audio matters more than tag volume.

Facebook

Written for sharing rather than search. A first line that reads like a person talking, a caption that does not need a click to make sense, and few hashtags — they add little here.

Frequently asked

Does this post to my accounts?

No. It writes the title, caption, tags and hashtags and hands them back. You review and publish yourself. If you connect accounts inside BlinkHub you can publish from one place, but the optimizer itself never posts on your behalf.

Why does the same draft come back differently per platform?

Because the platforms reward different things. YouTube reads your title and description as search text. Instagram has no title at all — the first line of the caption is the hook. TikTok weighs the opening line and audio far more than tags. Reusing one caption everywhere means it is wrong in at least three places.

How many hashtags should I use?

It depends on the platform, and more is not better. Instagram takes eight to fifteen when they are a mix of niche and medium-reach tags. TikTok does better with four to six. YouTube uses three to five, since tags do the heavier lifting. Facebook barely benefits at all.

Is it free?

You can try it without an account. Inside a BlinkHub account it is credit-based per optimisation, because each run calls a model.

Will AI-written captions sound generic?

They will if you give it nothing to work with. The output is only as specific as the draft you paste in — a caption written from a one-line summary reads like a one-line summary. Paste the actual detail you want carried across, then edit the result. Treat it as a first pass, not a final one.

Related