How to View Iguanodon in 3D
Iguanodon 3D Viewer runs an Early Cretaceous Iguanodon - a large beaked herbivore that could walk on two legs or four - in your browser. Drag to rotate, scroll or pinch to zoom, toggle a 1.8 m person for scale, and click a body part (including an arm's conical thumb spike) for a fossil-sourced fact.
Open the Iguanodon page and take the camera
Open the Iguanodon 3D Viewer and wait for the facts panel to fill. When the status line says you can drag, orbit the Iguanodon with the pointer and zoom with the scroll wheel or a two-finger pinch. Fullscreen expands the wrapper so the controls stay visible beside the scene.
Use the four Iguanodon controls under the canvas
Under the Iguanodon canvas, four controls handle view and scale:
- Fullscreen - fills the display while keeping the buttons visible
- Stop rotation / Auto-rotate - freezes or resumes auto-spin
- Idle motion - adds subtle breathing and leg sway; tap again for Stand still
- Size vs human - shows a 1.8 m person at the honest length ratio used by the viewer (about 10 m typical for Iguanodon bernissartensis; published length estimates run about 9-13 m)
Read the Iguanodon facts panel and click the thumb spike
The Iguanodon facts panel lists length about 9-13 m (typically cited around 10 m; Size vs human uses 10 m), hip height about 2-3 m when quadrupedal (higher when bipedal), weight about 3-5 tonnes, the 126-113 Mya Early Cretaceous window (Barremian-Aptian) in what is now Europe, and naming history - Gideon Mantell named the genus in 1825 from isolated teeth and bones found at Cuckfield, Sussex, one of the first three dinosaur genera ever formally named (with Megalosaurus 1824 and Hylaeosaurus 1833), years before Dinosauria was coined in 1842. Mantell originally reconstructed the conical thumb spike as a nose horn; that error was corrected after the 1878 Bernissart, Belgium find of about 38 near-complete skeletons. Each hand carries a large conical thumb spike - its exact function is debated (defense, foraging, or fighting between rivals) and no single explanation is proven. A short click - not a drag - on the thumb spike, head, arm, tail, or leg surfaces a short fossil fact; click empty space to return to the species sheet. Skin color is an artistic reconstruction; the model is procedural with a beaked snout and no free-licensed Iguanodon glTF re-hosted yet.
What the Iguanodon how-to guide is not
The Iguanodon how-to guide is a controls walkthrough for the in-browser viewer only - it does not place the model in your room (no AR), does not claim soft-tissue or color accuracy, does not invent one precise length or weight beyond the cited ranges, does not claim the thumb spike's function is settled, does not claim Iguanodon had a nose horn, does not invent a glTF credit, and does not invent game score or win states. For the size story see Iguanodon size comparison. For trade-offs versus phone AR apps see Iguanodon 3D viewer vs AR apps.
Why trust these tools
- Ten-plus years of web tooling. The freetoolonline editorial team has shipped browser-based utilities since 2015. The goal has never changed: get you to a working output fast, without an install.
- No install, no sign-up. Open a tool and get a working output in seconds - nothing to download and no account to create. Tools that need heavy processing run it on our service, so even a low-powered machine gets the job done.
- Analytics stops at the page view. We measure which pages get visited, not what you type or upload inside a tool. There is nothing to sign in to and no profile is attached to your input.
- Open-source core components. The processing engines underneath (libheif, libde265, pdf-lib, terser, clean-css, ffmpeg.wasm, and others) are public and audit-able. We link to each one in its tool page's footer.
- Free, with or without ads. All tools are fully functional without sign-up. The Disable Ads button in the header is always available if you need a distraction-free run.