01
AI text has tells
Language models lean on the same handful of words and stock phrases. Readers notice them, and so do detectors.
Verified Every rewrite checked against Pangram →
The synonym machine that checks its own work.
Paste AI-sounding text, swap the giveaway words for plain synonyms, and run both versions through a real AI detector. No promises, just the score.
- 600+
- Synonym entries
- 2×
- Detector checks, before & after
- 0
- Texts stored
Synonym swap · Phrase-aware · Pangram-verified
Try an example:
0 / 10,000Rewritten
Before
After
What is an unpangram machine?
A rewriting tool that swaps vocabulary, then asks a detector whether it made any difference.
02
We swap them out
A Rust engine walks your text, matches words and phrases against a hand-built dictionary, and replaces them at random with plainer synonyms.
03
Then we check
Swapping words is easy. Knowing whether it worked is the hard part, so both versions go to Pangram and you see the numbers side by side.
Which words does it swap?
The dictionary targets the vocabulary detectors and readers flag most often, plus hundreds of everyday words so the rewrite doesn't only touch the obvious ones.
delve into
→ dig into · look into · explore
Top 1% most-flagged
tapestry
→ mix · blend · mosaic
Top 1% most-flagged
crucial
→ key · vital · critical
Top 2% most-flagged
furthermore
→ also · plus · besides
Top 2% most-flagged
ALSO IN THE DICTIONARY
- leverageuse
- seamlesssmooth
- robuststurdy
- pivotalcentral
- fosternurture
- underscorestress
- in order toto
- a myriad oftons of
- utilizeemploy
- in conclusionto wrap up
- multifacetedlayered
- it is important to note thatkeep in mind that
Rewrite and verify in one place
Most humanizers stop at the rewrite. This one keeps going until you have a number you can trust.
Phrase swaps
Stock phrases are replaced as a whole, so the sentence still reads naturally.
Every change highlighted
Hover any highlighted word to see what it replaced. Nothing changes silently.
Before & after scores
Pangram scores the original and the rewrite so you can see the real effect.
How is unpangram different?
It is small, honest, and fast. It shows you what changed and lets the detector do the judging.
Phrase-aware
Matches the longest phrase first — "it is important to note that" is swapped as a unit, never word by word.
Idiom guard
Protected idioms like "makes sense" or "at least" are never broken apart into nonsense.
Keeps your casing
Sentence-start capitals and ALL CAPS survive the swap. Punctuation and spacing are untouched.
Fixes a / an
"a crucial step" becomes "an essential step", not "a essential step".
Seeded randomness
Every rewrite has a seed. Re-roll for a new variant, or share the seed to reproduce one exactly.
Written in Rust
The swap engine is a Rust Cloudflare Worker compiled to WebAssembly. It rewrites 10k characters in milliseconds.
How the machine works
Four steps, a few seconds, one honest score.
- 01
Paste your text
Drop in anything up to 10,000 characters: an essay, a cover letter, product copy.
- 02
Pick an intensity
Low keeps most of your wording. High swaps nearly every word the dictionary knows.
- 03
Unpangram it
The Rust worker swaps words and phrases for synonyms and highlights every change.
- 04
Check the score
Both versions go to the Pangram detector so you can compare before and after.
Questions
The short answers.
Does this beat AI detectors?
Sometimes, often not. Modern detectors like Pangram look at much more than vocabulary, and they flag "humanized" text on purpose. That is why every rewrite here is checked against the real detector instead of promising a result.
Where does the verification come from?
The Check buttons send your text to the Pangram API from our server and show the raw result: AI, AI-assisted, and human fractions, plus whether Pangram thinks the text was humanized.
Is my text stored?
No. The rewrite happens in memory inside a Cloudflare Worker. Verification sends the text to Pangram for scoring and nothing is kept on our side.
Why synonyms only?
It is the simplest transform that is easy to inspect. Every change is highlighted and reversible, so you can keep the swaps you like and drop the rest.