![]() ![]() Yeah it's definitely a presentation format, but probably the most useful one there is for many. ![]() Either by static analysis or by rendering canvas calls incrementally to SVG, anything overdrawn or obscured is sitting right there to inspect without any special browser-internal faculties. Mentioning this mainly because if there’s anything interesting to learn about a particular usage of canvas, it would probably not be a huge investment to learn it. As I looked through the actual canvas-specific code, it struck me that 1) it’s exceedingly statically analyzable and 2) that the imperative APIs could trivially translate to an incremental SVG rendering, because their primitives are nearly identical apart from the imperative/declarative distinction. That’s what I thought anyway, until recently I hacked on a someone’s generated art demo, mostly to glean insights into the algorithms used. The canvas API is all imperative code, so you might think it’s fairly opaque. That can have an interesting, if only hypothetical, consequence. So printing, either to PDF or to actual printers, may reveal more information about what was drawn to the canvas than normal display, especially if no effort has been made to remove overdrawn paint records. > What if we could also vectorize 2D elements controlled by JavaScript? This allowed a critical dimension of an unannounced product to be precisely determined (to three significant figures) which was a spec that had not been publicly released. but the base file (in this case it was an SVG) driving the page actually contained multiple hidden views of the same product and other products and at the 'real' precision of what likely was a DXF export from a CAD program, given to the web team. I did this on a startup company's page involving a product where they had a CAD-like side view drawing of one of their products. if the data hasn't been stripped completely or redrawn you can extract information that otherwise people would assume unknowable. anytime you see a pretty website with vector-y graphics, maybe engineering-drawing representations. This is actually a somewhat common method when it comes to a bit of corporate sleuthing. I've done conversions before where it was possible to see and extract underlying, hidden elements, that were not visible or even detectable in the rendered webpage in a browser. If you can't get enough of the Chrome Dino, learn how to add the Chrome dinosaur game widget to Android.This is exactly the case. Want to find out where the image came from? Learn how to do a reverse image search using Google. ![]() You can also learn how to play Android games on your PC with Google Play Games. ![]() We also have guides on how to block ads on Chrome, how to install Chrome extensions and how to block a website on Chrome. For more Chrome-related guides, take a look at how to download YouTube videos in Chrome and how to run a Safety Check in Google Chrome. Want to learn some secret streaming hacks? You might like how to use keyboard shortcuts on Netflix and how to use secret codes on Netflix to unlock new categories. Get started by reading how to set Chrome flags to access experimental browser features and how to lock incognito tabs on Chrome mobile to keep your secret tabs extra secret. Now you know how to hack the Chrome dinosaur game, you might want to check out our other tech hack guides. ![]()
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