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Spintax generator & tester

Write spintax and preview every variation instantly — or paste plain text and let auto-spin write the spintax for you. Runs entirely in your browser. Nothing is uploaded, nothing is stored.

Total combinations 0
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Now post them — one variation per group

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What is spintax?

Spintax is a shorthand for writing several versions of a sentence at once. You wrap the interchangeable parts in curly braces and separate the choices with a pipe, and a spinner picks one option from each set to build a finished sentence.

Written as {Hi|Hey|Hello} everyone, that single line produces three sentences. Add a second set with four options and you have twelve. The count multiplies, which is why a fairly short post with six or seven choice sets can produce thousands of distinct outputs — the counter above shows the exact number as you type.

Spintax also nests. {Hi {there|everyone}|Hello} is valid: the inner set is only reachable through the first branch of the outer one. This tool parses nesting correctly and counts it correctly, which a surprising number of spinners get wrong — they either flatten the nesting or multiply it as if both branches were always available.

How the auto-spin works

Most spintax tools assume you have already written the spintax. That is the hard part. Auto-spin reads your plain text, finds vocabulary that has natural alternatives — greetings, verbs of asking and offering, common intensifiers — and rewrites the first occurrence of each into a choice set, keeping your original wording as the first option so nothing you wrote is lost.

It replaces each term only once on purpose. Spinning every occurrence of every word is what produces the unreadable soup that gives spun content its reputation, and it is the reason most people abandon auto-spinners after one attempt. Treat the output as a first draft: the structure is done, and you edit the options to sound like you.

The honest limit of spintax

Run the tool above and watch the shared-wording figure under your variations. There is a trade-off built into spintax that the combination count hides completely, and you can measure it on your own text in about thirty seconds. Here is the same post spun three ways, scored by the tool on this page:

How much you spin Combinations Shared wording
Greeting and sign-off only694%
Plus a few nouns and adjectives1680%
Nearly every content word1,15215%

So heavy spinning does drive the lexical similarity down — a lot. The catch is what you pay for it. Getting to 15% meant replacing "I help local businesses get more customers" with "I assist small shops get more clients", swapping words a person writing naturally would not have swapped. That is exactly what makes spun text read like spun text. Spintax trades readability for lexical difference, and there is no setting where you get both.

And the low score is measuring the wrong thing anyway. Read two of those heavily-spun variants side by side: the structure is identical, the ideas arrive in the same order, the argument is the same, the length is the same to within a word or two. Spintax cannot change any of those, because it operates inside a skeleton you wrote once. The combination count measures how many strings you can produce; it never measured how many posts you have.

This matters for a practical reason rather than a technical one. If you post into twenty groups and a meaningful number of people belong to more than one — normal in any tight niche — those people see your message repeatedly. Whether it said "Hi" or "Hey", "customers" or "clients", does not change their experience of it. Genuinely different posts open differently, lead with a different point, and run to a different length. That is a writing problem, and spintax was never the tool for it.

Where spintax still earns its place

Use it for the parts of a post that genuinely are interchangeable — the greeting, the sign-off, the call to action, a product name that has three common spellings. Combine it with genuinely different post bodies and you get real variety at the top of the funnel and controlled variety at the edges. That combination is what our AI content engine does: it writes distinct posts, then applies spintax within each one.

Spintax syntax reference

Pattern Produces
{a|b}2 versions — a or b
{a|b|c} and {x|y}6 versions — the counts multiply
{a {x|y}|b}3 versions — nesting; x and y only exist inside a
{|extra}2 versions — an empty option makes a phrase optional

The empty-option trick in the last row is the most under-used piece of spintax syntax. Thanks{ everyone|}! gives you both "Thanks everyone!" and "Thanks!", which varies sentence length rather than just vocabulary — and length variation does more for perceived difference than swapping adjectives.

Spintax

Common questions

What is a spintax generator?
A spintax generator turns one piece of text into many versions by picking from sets of alternatives you mark with curly braces and pipes, as in {Hi|Hey|Hello}. This one does that, counts the exact number of combinations including nested sets, and can also work backwards — paste plain text and it writes the spintax for you.
Is this spintax generator free?
Yes, completely, with no sign-up and no limit on how many times you use it. It runs entirely in your browser using JavaScript — your text is never sent to a server, never stored and never seen by us. You can confirm that by opening your browser's network tab while you type.
Does spintax make my posts unique?
Less than the combination count suggests, and there is a trade-off. Spin only the greeting and sign-off and your variants still share around 94% of their wording. Spin nearly every content word and that falls to roughly 15% — but you get there by swapping words a person would not have swapped, which is what makes spun text read like spun text. Either way the structure, the order of ideas, the argument and the length are identical, because spintax works inside a skeleton you wrote once. The tool above measures this on your own text.
Does spintax support nesting?
Yes. {Hi {there|everyone}|Hello} is valid, and the inner set is only reachable through the first branch — so it produces three versions, not six. This tool parses and counts nesting correctly, which is worth checking in any spinner you use, since some flatten nested sets and others multiply them as though every branch were always available.
How many spintax variations do I actually need?
Fewer than most people assume, because past a point you are adding combinations without adding difference. A useful rule: you want at least as many genuinely distinct post bodies as the number of groups a typical member of your audience belongs to. If people in your niche are in five of your groups, five real posts beats five thousand permutations of one.
Can I use an empty spintax option?
Yes, and it is the most under-used part of the syntax. Thanks{ everyone|}! produces both "Thanks everyone!" and "Thanks!". An empty option makes a phrase optional, which varies the length of your sentences rather than only their vocabulary — and length variation does more for how different two posts feel than swapping adjectives does.
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