How is the reading time calculated?
Words divided by 238 words per minute, rounded up to the next second. 238 is an assumed average for silent reading, not a measurement of you, so treat the figure as a rough guide. Words are runs of characters separated by spaces or line breaks.
Which limit should I trust: the platform's or the bundle.social API limit?
The platform limit is what the network documents for its own app or API. The bundle.social API limit is what our publishing endpoint checks before it sends the post. It is usually the same number counted in UTF-16 units, and for X it depends on whether the account has Premium.
Why does the same text give a different count on X than on Instagram?
X uses a weighted count in which every link costs 23 characters and emoji or CJK characters cost 2. Instagram documents a plain 2,200-character cap. The tool switches the counting method with the platform.
Does the counter include spaces and line breaks?
Yes, in the Characters figure, and Characters without spaces leaves out spaces, tabs and line breaks. Every platform counts spaces and line breaks, so the platform check does too. Browsers turn every line break in a text box into a single line feed, so each break counts as one character here; text sent through an API with Windows line breaks (CRLF) can count two per break.
What does "not verified" next to a limit mean?
It means the number could not be read on an official page of the platform on the check date, usually because the help centre blocked automated access. The figure shown is the one bundle.social enforces.
Is my text stored or sent anywhere?
No. Counting runs in your browser. The only network request is loading the X counting library when an X field needs it. Session recording and click analytics are switched off inside the tool area.
How does the counter decide what a sentence is?
It uses the sentence segmenter built into your browser (Intl.Segmenter), which follows the Unicode text segmentation rules: a sentence ends at a question or exclamation mark, at a full stop followed by a capital letter, or at a line break. Decimal numbers such as 3.14 do not split a sentence. Browsers without the segmenter use a simpler rule that splits at those marks when a space follows.
Which platforms can I check, and is a limit applied by default?
No limit is applied until you choose a platform. The list covers X, Instagram, LinkedIn, TikTok, YouTube, Facebook, Threads, Pinterest, Google Business Profile and Bluesky, each with its own fields, such as caption and bio or title and description. Every platform also has its own counter page with more detail.