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Since I tried Ludwig back in 2017, I have been constantly using it in both editing and translation. Ever since, I suggest it to my translators at ProSciEditing.

Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com
upon seeing that
Grammar usage guide and real-world examplesUSAGE SUMMARY
"upon seeing that" is correct and can be used in written English.
You can use this phrase to describe what someone did or observed after they saw something. For example, "Upon seeing that there were no more tickets available, he quickly changed his plans."
✓ Grammatically correct
News & Media
Academia
Science
Wiki
Alternative expressions(16)
after observing that
on noticing that
once it was observed that
having seen that
on recognizing that
following the observation that
upon ascertaining that
upon discovering that
upon ensuring that
upon recognising that
upon realising that
upon understanding that
upon testing that
upon learning that
upon hearing that
upon having that
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Human-verified examples from authoritative sources
Exact Expressions
30 human-written examples
I have always gotten teary-eyed upon seeing that, even before I had a child.
News & Media
Do you know any editor who, upon seeing that picture, in a million years — I mean, look at that picture!
News & Media
Upon seeing that Johnson was the only occupant of the room, they placed her under arrest, searched the room, and discovered opium and drug paraphernalia.
Academia
"We're the indisputable gateway to the Americas," Mr. Arrizurieta said, adding that he bristled upon seeing that exact phrase, "Gateway to the Americas," as part of an extensive advertising insert purchased by Atlanta recently in the magazine Latin Trade to win support for its bid.
News & Media
Confirmation gets stronger upon seeing that farm inventories show a tiny gain, not the drawdown consistent with pre-harvest export sales timed to beat the tariffs.
News & Media
If I didn't already know what the app did and didn't do, I would delete it without a second thought upon seeing that dialog, and even knowing what I do, I'm not likely to pay in perpetuity for it.
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
30 human-written examples
Based upon Theorem 4.10, we see that equation (4.2) holds.
Meanwhile, one can see that, upon calcining, peak intensities of ZnO are obviously enhanced compared to those of non-calcined ZnO.
Science
The feeling of disbelief, wonder and amazement upon seeing Neil Armstrong take that "One Small Step For Man, One Giant Leap For Mankind".
News & Media
They had trouble finding it, but finally did, only to decide, upon seeing it, that they would eat instead at a nearby Chinese restaurant.
News & Media
Upon seeing confirmation that David was the reason he'd finally gotten caught, Ted severed all ties with his sibling.
News & Media
Expert writing Tips
Best practice
When using "upon seeing that", ensure the sentence clearly establishes a cause-and-effect relationship, where the visual observation directly leads to a subsequent action or realization.
Common error
Avoid using "upon seeing that" in casual or informal writing. It can sound overly formal or stilted in everyday conversations or informal communications. Simpler phrases like "when I saw that" or "after seeing that" are generally more appropriate.
Source & Trust
83%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "upon seeing that" functions as a prepositional phrase introducing a dependent clause. It modifies the main clause by providing the temporal context or condition under which the action in the main clause occurs. As noted by Ludwig AI, it indicates a cause-and-effect relationship.
Frequent in
News & Media
60%
Academia
23%
Wiki
10%
Less common in
Science
7%
Formal & Business
0%
Encyclopedias
0%
Ludwig's WRAP-UP
In summary, "upon seeing that" is a grammatically correct and semantically valid phrase used to indicate an immediate response or realization following a visual observation. Ludwig AI confirms its correctness. While versatile, it carries a slightly formal tone and appears most frequently in news media and academic contexts. When choosing to use "upon seeing that", consider the level of formality appropriate for your audience and ensure a clear cause-and-effect relationship between the observation and subsequent action. Simpler alternatives exist for more casual settings, such as "after seeing that".
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
on noticing that
Focuses on the act of noticing as the initial step.
after observing that
Emphasizes the observation aspect before the realization.
having seen that
Uses a past participle to emphasize the completed action of seeing.
perceiving that
Uses a more formal verb to indicate visual awareness.
once it was observed that
Highlights the moment of observation as a trigger for subsequent actions.
on recognizing that
Emphasizes the act of recognizing something visually.
following the observation that
Positions the observation as a preceding event influencing the next.
as soon as it was apparent that
Highlights the immediate clarity of the observation.
after realizing that (visually)
Explicitly states the realization as a result of visual input.
when it became clear that
Emphasizes the realization aspect following the visual input.
FAQs
How can I use "upon seeing that" in a sentence?
Use "upon seeing that" to describe a situation where visual observation leads to a specific action or realization. For example: "Upon seeing that the store was closed, he decided to go home".
What are some alternatives to "upon seeing that"?
You can use alternatives like "after observing that", "on noticing that", or "once it was observed that" depending on the desired level of formality and emphasis.
Is "upon seeing that" formal or informal?
"Upon seeing that" is considered a more formal expression. In informal contexts, phrases like "when I saw that" or "after seeing that" are more appropriate.
What's the difference between "upon seeing that" and "after seeing that"?
While both phrases indicate a sequence of events, "upon seeing that" often carries a slightly stronger sense of immediacy and formality compared to "after seeing that". "After seeing that" is generally more neutral and versatile.
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Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Source & Trust
83%
Authority and reliability
4.5/5
Expert rating
Real-world application tested