Inspect and normalize invisible text signals
Characters that take up no space, controls that change reading order, and letters borrowed from other alphabets. Code, links and emoji are left intact.
Text tool
Original
0 words · 0 chars
Processed
Nothing to inspect yet
Paste text on the left. Invisible characters appear here as amber marks, in the place they occupy.
Model watermark
separate mechanism
Some AI systems encode a statistical signal directly into word or token choices. It is not a character you can look for, so detecting it depends on the specific provider’s method.
The surface signals listed separately are characters, not a model watermark. Finding them does not indicate that text was generated by any particular system.
When a provider publishes a detection method, it is added here, and removal is developed and measured against it. The plan