Even Google themselves previously offered a no-auth way (just very niche): if you uploaded an image to Google Image search, and went to "About this image", it would show if the image was Google AI-generated. Now it doesn't.
We need to inform everyone that this technology can encode database identifiers and enough entropy to uniquely identify you as an author (or downloader).
This extends to other forms of media as well.
cubefox 2 hours ago [-]
They are not spymarks if they don't encode any personal IDs and are merely used to indicate that an image was AI-generated. I don't think Google or OpenAI use SynthID to include personal data.
MisterMunchkin 2 hours ago [-]
Come on man, they're both advertising companies. Would you resist the opportunity to build that social graph and detect a known user anywhere on the internet?
cubefox 55 minutes ago [-]
Of course. Privacy is a feature that increases their product value. Moreover, they could get into trouble with the GDPR if they secretly included tracking information in their images.
drdaeman 35 minutes ago [-]
So the obvious move is that marketing materials sing how it’s super private, while actual steganography encodes everything to uniquely identify you. If someone discovers something wave it away (and crack down on pesky whistleblowers), eat the fines if the worst happens.
morkalork 2 hours ago [-]
And there lies the rub. You can't verify if they do or don't embed such content. These companies are just like "trust me bro".
orng 2 hours ago [-]
Indeed and Google has built its empire through tracking users across the internet so it is really hard to trust that they won't..
Retr0id 2 hours ago [-]
It's presumably so they can rate-limit people who are trying to reverse-engineer or otherwise strip it (e.g. iteratively tweaking until it stops getting detected)
user43928 2 hours ago [-]
I wonder how relevant this really is.
How hard can it be to download a set of real images and generated ones in order to train a model to detect and strip the watermark with minimal perceptual difference?
98codes 1 hours ago [-]
It's worth nothing that this IS Google.
Given that it's an ad company, they want something to connect what you're doing to the rest of their data, and they couldn't possibly keep the old image search results there if they want people to use this.
brokensegue 2 hours ago [-]
Yeah I've been wanting to run a ton of Wikipedia images through the detector to see if fakes snuck in. Doesn't seem to be a practical way to do this. Even Open AIs tool has a low rate limit
wodenokoto 2 hours ago [-]
The EULA you have to accept hints that they are afraid you are going to abuse it to remove synthID - e.g, set up and edit and check loop
dannyw 2 hours ago [-]
That’s the justification, but the EULA incorporates Google’s regular consumer terms; which means what you upload can also be used for advertising and targeting; and basically any purpose whatsoever by Google.
apefulsin 2 hours ago [-]
Any access to a watermark detector can be used to remove the watermark. Presumably they want to be able to track who is doing that.
lelandfe 2 hours ago [-]
I've never seen it mentioned anywhere so I will just here complain that Google also removed the ability to paste images into Google Image search some years ago for no apparent reason. It worked great and I used it all the time.
mh- 2 hours ago [-]
Click the little camera icon in the search box and it pops a modal that says Search any image with Google Lens.
The textbox below it says Paste image link, but you can actually paste an image from your clipboard here, too.
qingcharles 58 minutes ago [-]
And if it doesn't work on the Google home page, just go to images.google.com and do the same, it always works there for some reason.
lelandfe 2 hours ago [-]
You’re a hero. So glad I complained. Why would they not just keep this working with the main text box focused…
_flux 2 hours ago [-]
In similar fashion in the Android Play Store they moved the search off from the top bar. For some time they educated users that "oo the search is no longer here, you need to click there -> to get to the page with search!". That has stopped (for me?), but they still haven't found any other use for same place in the first view.
I suppose it was too convenient.
mh- 2 hours ago [-]
No idea. I used it a lot too, not sure if pasting here worked from the beginning of them introducing this Google Lens thing or not.
dannyw 2 hours ago [-]
I wonder if it’s a deliberate anti-user decision to get more URLs and less pasted images.
I might be missing something but Google Image Search still works for me.
RugnirViking 2 hours ago [-]
this + image translate with copy+paste is the only reason I ever use yandex of all places...
MisterMunchkin 2 hours ago [-]
It's deliberate so that you can't find a way to bypass it.
cubefox 2 hours ago [-]
OpenAI's tool is worse though, because it doesn't detect SynthID from non-OpenAI models. I just tried it with various images created by Imagen / Nano Banana.
NeumannGod 11 minutes ago [-]
Is there an open standard or something for people generating images to encode them or is the standard private and only shared with frontier model builders? That's a shame if latter. But pretty cool standardizing technology.
Retr0id 2 hours ago [-]
It's a real shame Google isn't more transparent about how it actually works, and doesn't provide any mechanism for classifying images in bulk or offline.
It covers how it actually works (probably), and how to train your own classifier for it, with some seemingly decent results.
MisterMunchkin 2 hours ago [-]
They don't want you to know, because they're the baddies. Imagine how much money they can get from advertisers if they're able to identify every single piece of code, reddit thread, email, GitHub readme that you've ever written based on your secret ID. They're creaming themselves just thinking about it.
"Excellent work acquiring that outlook data Anat, now let's cross check the defunct company emails against YouTube videos edited with Google PrivateEditAI™ to figure out what the social security number of this YouTube account is."
Avicebron 2 hours ago [-]
Unfortunately this is the truth, no one can be given a benefit of the doubt because despite years of good grace they have been anti-user and enshittified everything they touch.
elevation 2 hours ago [-]
> It's a real shame Google isn't more transparent about how it actually works
> classifying images in bulk or offline
You've described exactly the elements spammers and fraudsters need to be able to defeat this mechanism.
Retr0id 2 hours ago [-]
Well it's not a very good mechanism then, is it.
_flux 2 hours ago [-]
Is it possible to implement a very good mechanism?
Retr0id 26 minutes ago [-]
Not that I can think of, but you could have two watermarks, one detectable with an open-source classifier and the other proprietary.
Most AI images are either extremely low-effort or not actively trying to be deceptive, so defenders can still catch the majority. If someone is actively circumventing they'll probably circumvent both, anyway.
jdranczewski 2 hours ago [-]
Finally, the previous implementations were very silly! OpenAI had a nice tool, but it only detected their own watermarks, and Google's process was "upload the image to Gemini and ask if it's AI generated", which seemed like a perplexing waste of tokens and breath.
(While a sibling comment points out putting the image through Google Image Search as an alternative, I don't remember this being signposted in the support article I've read, so I unfortunately didn't know about it)
Computer0 1 hours ago [-]
It also was the exact opposite of the commonly shared sentiment “Don’t blindly trust the ai”
RobGR 2 hours ago [-]
If I go directly to the URL it wants me to agree to some stuff before I even know what the service is. I had to come to these comments to figure that out (without agreeing to anything first).
nialv7 2 hours ago [-]
Why the hell do I need to sign in?
wildzzz 2 hours ago [-]
Probably to help prevent people from reverse engineering synthID to build a filter.
No option to detect generated text. SynthID also watermarks text, right?
nonethewiser 2 hours ago [-]
Thats what I was expecting. I thought so.
jakozaur 2 hours ago [-]
I worry we’ll have to approach this the other way around: verify that photos came from a camera, using hardware support like Apple’s Reference Image, rather than try to detect every AI generated one.
In many situations, photos are evidence. AI tools make convincing fakes, such as images of defect product.
MisterMunchkin 2 hours ago [-]
The creepiest part of SynthID is that even the Chinese models are refusing to try and bypass it. Not sure if it's corruption from claudeslop data but they keep saying it's a crime to remove SynthID advertising tokens.
>I won't provide an operational recipe for stripping it, because the main use case is laundering AI content, which is deceptive and in many jurisdictions now illegal.
pbronez 2 hours ago [-]
This is a Google Deepmind project to “Identify AI generated media”
Ah but that's the genius of the scheme. Every single one of those providers will detect your secret ID and refuse the request. And sneak their own one in for good measure.
Muromec 2 hours ago [-]
What's what you use the stupid silly local model^W script.
latexr 3 hours ago [-]
Can’t be used without signing in with a Google, Apple, or ChatGPT account.
giancarlostoro 3 hours ago [-]
Also it can't detect any Synths in The Commonwealth.
nonethewiser 2 hours ago [-]
Who thought it was a good idea to Institute it like this?
tosh 2 hours ago [-]
is this by Google?
spuz 2 hours ago [-]
Yes but OpenAI, NVIDIA, Kakao, Apple have said they will also implement SynthID
Even Google themselves previously offered a no-auth way (just very niche): if you uploaded an image to Google Image search, and went to "About this image", it would show if the image was Google AI-generated. Now it doesn't.
https://brand.io/article/spymarks/
We need to inform everyone that this technology can encode database identifiers and enough entropy to uniquely identify you as an author (or downloader).
This extends to other forms of media as well.
How hard can it be to download a set of real images and generated ones in order to train a model to detect and strip the watermark with minimal perceptual difference?
Given that it's an ad company, they want something to connect what you're doing to the rest of their data, and they couldn't possibly keep the old image search results there if they want people to use this.
The textbox below it says Paste image link, but you can actually paste an image from your clipboard here, too.
I suppose it was too convenient.
URLs expand Googlebot’s indexes; pasted images don’t.
This is the best SynthID write-up I've found so far: https://fyx.me/articles/attempting-model-extraction-of-googl...
It covers how it actually works (probably), and how to train your own classifier for it, with some seemingly decent results.
"Excellent work acquiring that outlook data Anat, now let's cross check the defunct company emails against YouTube videos edited with Google PrivateEditAI™ to figure out what the social security number of this YouTube account is."
> classifying images in bulk or offline
You've described exactly the elements spammers and fraudsters need to be able to defeat this mechanism.
Most AI images are either extremely low-effort or not actively trying to be deceptive, so defenders can still catch the majority. If someone is actively circumventing they'll probably circumvent both, anyway.
(While a sibling comment points out putting the image through Google Image Search as an alternative, I don't remember this being signposted in the support article I've read, so I unfortunately didn't know about it)
https://help.openai.com/en/articles/8912793-provenance-signa...
There is rate limit though
In many situations, photos are evidence. AI tools make convincing fakes, such as images of defect product.
>I won't provide an operational recipe for stripping it, because the main use case is laundering AI content, which is deceptive and in many jurisdictions now illegal.
More detail at https://deepmind.google/models/synthid/
For those who, like me, were hoping it was a vision model to identify synthesizer models from photos of concerts and music studios!
Or did it just become public
Edit:
Blog post today https://blog.google/innovation-and-ai/models-and-research/go...
Hey Gemini, find a synonym for every second adjective. Replace in text.
Hey Grok, find a synonym for every third proper noun. Replace in text.
Hey …
Too short for watermarking but point taken of course.
Probably more like
https://deepwalker.xyz/blog/evaluating-synthid-watermark-rob...