Does longer text help reach?

There is no dependable benefit. Platforms read it for context, and readers mostly do not see past the first line.

Should I repeat the hook from the video?

Repeating it word for word wastes the line. Extending or complicating it gives the viewer a second reason to stay.

Where do hashtags go?

After the text, and a short specific set outperforms a long generic one.

Is a call to action worth including?

One, and specific. A list of requests performs worse than a single clear one.

Does this apply to every platform?

The truncation point differs and the principle does not. Assume one or two lines everywhere and you will be right nearly all the time.

How Long Is Too Long for a Caption?

How long should post text be?

One or two lines for most clips. That is what appears before the truncation, and the proportion of viewers who expand it is small. Longer text is not penalised, it is simply unread, so anything that matters has to sit in the opening line.

What the first line has to do

The line is read by someone already watching, which makes it a different job from a headline. It is not there to sell the clip, it is there to add to it.

First line says	Reader reaction	Worth it?
Repeats the words on screen	Nothing, they already read it	No
Extends or complicates the hook	A second reason to stay	Yes
Asks a genuine question	Sometimes an answer	Often
Lists hashtags	Skipped	No, put them after
Announces what the clip is	Redundant, the clip is playing	No

Making the first line do more

The first line works best when it adds something the video does not: a question for the comments, a surprising fact related to the clip, or a hint about what happens at the end. Viewers who read it while the clip plays are already interested, so give them a reason to stay, comment or save.

Avoid starting with filler like "So I was thinking" or a string of hashtags. The visible space is too small to waste.

Read the first line out loud: if it sounds natural, it will read naturally.

When longer text is worth writing

Some clips genuinely benefit from more detail below the fold: a recipe with ingredients, a tutorial with steps, a list of sources for a claim. Viewers who want that information will tap to expand, and having it there can turn a casual viewer into a saver or follower.

Structure long text so it is easy to scan: short lines, simple lists and the most important details first.

Keeping text consistent across a series

For a recurring series, a consistent format for post text helps viewers recognise it and saves you time. A fixed structure, such as the hook line, one sentence of context, then credits and tags, can be filled in quickly for each clip.

Save your templates somewhere easy to copy from, so every post starts from the same base.

Checking how it looks on a phone

Different phones cut off post text at different lengths. Preview a post on your own phone before publishing to see exactly where the cut falls, and adjust the first line so the key words are always visible.

Emojis and line breaks count toward the visible space too, so use them sparingly in the opening.

Write the line that gets read

Front load the important part. The first line is doing all the work.
Cut anything decorative. Filler pushes the useful part out of view.
Write longer only with a reason. A story or an explanation can justify it. Habit cannot.

Post one clip with a single strong line.

Questions people ask

Does longer text help reach?: There is no dependable benefit. Platforms read it for context, and readers mostly do not see past the first line.
Should I repeat the hook from the video?: Repeating it word for word wastes the line. Extending or complicating it gives the viewer a second reason to stay.
Where do hashtags go?: After the text, and a short specific set outperforms a long generic one.
Is a call to action worth including?: One, and specific. A list of requests performs worse than a single clear one.
Does this apply to every platform?: The truncation point differs and the principle does not. Assume one or two lines everywhere and you will be right nearly all the time.