Social-Cast

What it is

Social-Cast solves one problem: you write an announcement once, then rewrite it six more times, because a post that works on LinkedIn reads wrong on TikTok.

Write it once. About thirty seconds later you have a finished post for every platform you selected.

It writes the copy, makes or crops the picture, and can post it for you. Nothing leaves your hands automatically: every card has its own Post button, and you press it.

Social-Cast was called Solo-Cast until 30 July 2026. Same tool, clearer name. Old links redirect automatically.

What you get back

Two things per platform, and they are the whole point.

1. Alternative copy, written for that platform. Not your text trimmed to fit. A genuinely different post each time, written the way that platform reads, already inside its character limit, with hashtags kept in their own field rather than jammed into the caption.

2. Your image, reframed to that platform's aspect. Attach one image and every result card offers it back cropped to that platform's shape. Square for the feed, vertical for Reels and TikTok, wide for YouTube.

Copy plus artwork, sized and ready, for up to seven places at once.

The seven platforms

Pick only the ones you need. Fewer platforms means a faster run.

How to use it

1. Go to Social-Cast in the side nav, under both Image and Video.
2. Add a Title, a Body, or both. A link is optional and gets worked into the copy where it fits.
3. Optionally attach an image or video.
4. Tick the platforms you want.
5. Press Reframe for all platforms.

A run takes roughly 30 seconds for all seven. A spinner and a live counter show progress while it works.

Why the formatting differs per platform

Line breaks are not cosmetic, so each platform gets its own shape:

• X, Threads and TikTok get one unbroken block. At 280 characters, line breaks waste space you need.
• LinkedIn gets a hook line on its own, then short paragraphs. LinkedIn hides everything after about three lines behind a "see more" link, so the opening line has to stand alone or nobody reads it.
• Instagram gets a hook line, then the body.
• Facebook gets short paragraphs with the call to action on its own line.
• YouTube gets a structured description with the link and tags separated.

Character counts and the pink counter

Every card shows a live count against that platform's limit. If a caption runs over, the counter turns pink so you catch it before posting.

Every caption is editable in place, so an over-limit post is yours to trim. If you try to publish one anyway, Social-Cast refuses and tells you exactly how many characters to cut. Nothing is sent and nothing is uploaded, so it costs you nothing to find out.

X is the one most likely to run long, because 280 characters is genuinely tight once a link is included. X counts every link as 23 characters however long it really is, and the counter already accounts for that.

Media

You can attach several images, or one video. Multiple images post as a carousel, in the order you added them, and every slide is cropped to the platform's aspect before it goes out.

Cropping is free. It happens in your browser, so it costs nothing and you can take as many crops as you like from a single run. Swap or reorder the pictures and every card re-renders without paying for the copy again.

Platforms cap carousels at different lengths. If your tray holds more slides than a platform accepts, the extras are dropped from the end and the confirmation says so. Platforms that only take one image get slide 1.

One video, or several images, never both. No platform takes a mixed carousel through our publishing partner, so Social-Cast asks you to pick rather than quietly dropping something.

Video can now be letterboxed to fit, free. If your video is the wrong shape for a platform, that card offers Letterbox to 9:16 (or whatever that platform wants). It fits the whole frame inside the target and fills the bars with a blurred copy of the video itself, so nothing is cropped off and nothing is invented. Press it once and every platform wanting that same shape is covered by the one encode. Press it again to go back to the original.

You see the result before it goes out: the card shows the letterboxed video inline, so what you are looking at is what will post.

It is only offered when the shape is genuinely wrong. Most platforms accept more than one aspect, and a video that already fits is left alone rather than nagged about. A landscape video, for instance, is native on YouTube, X, Facebook, Threads and LinkedIn, so only Instagram and TikTok will offer to letterbox it.

Cropping, letterboxing and reframing

Three different things, and it is worth knowing which one you are using.

Crop is the default for images and it discards the edges. That is right for a photograph, where losing a little off the sides costs you nothing. It is wrong when the edges carry the point: crop a wide product shot to vertical and the title across the top can lose its first and last letters, and it will look deliberate rather than broken.

Reframe is the paid alternative for images. Instead of trimming, it generates believable new picture where the missing area is, so the whole original stays visible. 5 credits per image, and if several platforms want the same shape you pay once for all of them. Buy it and you can still switch back to the free crop at any time without paying again.

Reframe invents what it adds, so choose it deliberately. It is excellent on photographs with open background around the subject, where there is sky or wall or floor to extend. Avoid it on charts, logos, price lists or anything with text near the edge, because generated text comes back looking convincing rather than obviously wrong. Letterboxing or a plain crop is the safer choice for those.

Generating the picture

If you do not have artwork, Social-Cast can make it. Press Generate images from this post and you get two images for 5 credits. Keep one or keep both, and two kept images post as a carousel.

You can steer it two ways:

• Leave the description box blank and it reads your post, works out what the post is actually saying, and photographs that. It offers a few different ideas and cycles to the next one each time you generate, so a second run is a genuinely different concept rather than the same idea again.
• Type your own description and that wins outright. Nothing is inferred from your post, and what you asked for is what gets drawn.

Keep as many of the six as you want. Tap each one you want; they are added in the order you tap them and become the carousel. Six variations of one idea usually work better together than any single one does alone.

The 5 credits are charged when the images arrive, so closing without keeping any does not refund them, and generating again costs another 5. Images are generated tall (2:3) because a tall source survives being cropped square, vertical and wide, which a landscape source does not.

Publishing to your accounts

Social-Cast can post directly, once you have connected a Blotato account under Settings, Developer, Connected accounts. Without it you still get everything else, and you copy and paste.

With it connected, each result card grows a Post to (platform) button naming the account it will use. Facebook asks which Page, Pinterest asks which board. Posting is per card and per press, so you can publish to two platforms and sit on the rest.

You can post to several Facebook Pages from one run. Send it to the first Page, then change the dropdown and the button comes back ready for the next one. A Page you have already sent to stays marked as posted, so switching back cannot publish it twice by accident.

If you have more than one account on the same platform, each gets its own button naming the handle, so there is never a question about which one a press will use.

Hashtags are trimmed to each platform's ceiling at the moment you post, because captions stay editable right up to that point. Instagram rejects a post with more than five hashtags outright, so this is a hard cap rather than a suggestion. Anything trimmed is named in the confirmation.

If a post fails, the reason stays pinned to that card rather than fading, and it is the platform's own reason wherever we have one.

What it costs

4 credits per run, regardless of how many platforms you select. You are charged once the copy is delivered, so a run that fails or times out does not cost you credits.

5 credits per image generation, which returns two images to choose from.

5 credits per image reframe, the paid alternative to cropping. One purchase covers every platform wanting that same shape.

Cropping images, letterboxing video and publishing are free and unlimited.

Getting better results

• Give it something to work with. A one-line body produces thin copy. A paragraph of real detail produces posts worth publishing.
• Include the link if there is one. Copy written around a link reads better than copy with a link stapled on.
• Say what the thing is for, not just what it is. Social-Cast writes the angle from your framing.
• Paste the whole draft into Body. A headline on the first line, or a link on its own line, gets pulled into the right field for you. A first line that runs long or ends in a full stop is treated as a sentence and left in the body, which is deliberate: promoting a real sentence to a headline would delete a paragraph from your post.
• Read before you post. It is a strong first draft, not a final one. Your voice beats a model's every time.

What is coming

Scheduling. Posting works now, one press per card. The next step is queueing a set for later and letting it go out while you are doing something else.

A record of what you published. Right now each card tells you it posted, but the run itself leaves no summary behind. A list of what went where, with the live links, is next.

Related

• Brand Studio for the visuals to go with the copy
• Plans and credits