Title: PartWork.ai 3D Viewer – CAD, STEP & STL Files Author: partworkteam Published: Hedra 5, 2026 Last modified: Hedra 5, 2026 --- Search plugins ![](https://ps.w.org/partwork-3d-viewer/assets/banner-772x250.png?rev=3728731) ![](https://ps.w.org/partwork-3d-viewer/assets/icon-256x256.png?rev=3728731) # PartWork.ai 3D Viewer – CAD, STEP & STL Files By [partworkteam](https://profiles.wordpress.org/partworkteam/) [Download](https://downloads.wordpress.org/plugin/partwork-3d-viewer.1.1.0.zip) * [Details](https://cor.wordpress.org/plugins/partwork-3d-viewer/#description) * [Reviews](https://cor.wordpress.org/plugins/partwork-3d-viewer/#reviews) * [Installation](https://cor.wordpress.org/plugins/partwork-3d-viewer/#installation) * [Development](https://cor.wordpress.org/plugins/partwork-3d-viewer/#developers) [Support](https://wordpress.org/support/plugin/partwork-3d-viewer/) ## Description **PartWork.ai 3D Viewer** puts an interactive 3D viewer on any page or post. Show your own STEP, STL, IGES, OBJ, BREP or GLB part on a product page, or let visitors drop in their own file and see it in 3D: rotate, zoom, switch views and go fullscreen, on desktop or phone, with nothing to install. It’s built for sites whose customers send CAD files: machine shops, 3D printing services, fabricators, makerspaces and engineering firms. A customer can check their file on your “request a quote” page before they send it, and you can ask for exactly the file you need. The plugin adds: * A **PartWork.ai 3D Viewer** block, with a live preview in the editor. * Show a part of your own: pick a STEP, STL or other model file from the Media Library. The plugin lets the Media Library accept these file types. * A **[partwork_viewer]** shortcode for the classic editor and page builders. * Settings for title, light or dark theme, height and colors. #### Free, with a credit link The viewer is free on any site. It shows a small “Powered by PartWork.ai” link inside the viewer, which must stay visible. For a viewer without it, ask about a white- label license at support@partwork.ai. #### External services This plugin embeds the PartWork.ai viewer, which is hosted by PartWork.ai and loads in an iframe from `cdn.partwork.ai` on pages that contain the block or shortcode. The plugin adds no script to the rest of your site. What the viewer sends, and when: * **Every time the viewer loads:** an anonymous usage event (which viewer surface loaded and the origin of the page it is embedded on) is sent to `api.partwork. ai`. The viewer stores a random visitor ID in its own storage on `cdn.partwork. ai` to count repeat views. No cookies are set on your site, and no name, email or account is involved. * **When a visitor opens a STEP, STL, IGES, OBJ, DXF or BREP file:** the file is uploaded to `api.partwork.ai` to be converted for display. Before the upload, a Cloudflare Turnstile check (`challenges.cloudflare.com`) confirms the visitor is not a bot. GLB files open in the visitor’s browser and are not uploaded. * **When a viewer shows a model you chose:** the model’s URL and the address of your page are sent to `api.partwork.ai`, which downloads the file from your site, converts it for display and keeps the converted copy for up to 30 days. It only shows a model on the site that hosts it, and only over https. Visitors’ browsers then load the converted copy from PartWork.ai’s storage. * **When a visitor clicks “Modify with AI” or “Open in Studio”:** a new tab opens on `studio.partwork.ai`. Nothing is sent before the click. You can hide the button in the block settings or with `ai="off"`. Links: * Viewer and documentation: [partwork.ai/embed](https://www.partwork.ai/embed/) * Embed license: [partwork.ai/viewer-license](https://www.partwork.ai/viewer-license/) * Terms of service: [partwork.ai/terms-of-service](https://www.partwork.ai/terms-of-service/) * Privacy policy: [partwork.ai/privacy-policy](https://www.partwork.ai/privacy-policy/) * Cloudflare Turnstile privacy: [cloudflare.com/turnstile-privacy-policy](https://www.cloudflare.com/turnstile-privacy-policy/) ## Screenshots [⌊A visitor checking their STEP file on a machine shop's quote page.⌉⌊A visitor checking their STEP file on a machine shop's quote page.⌉[ A visitor checking their STEP file on a machine shop’s quote page. [⌊The block settings: title, theme, height and colors.⌉⌊The block settings: title, theme, height and colors.⌉[ The block settings: title, theme, height and colors. [⌊The viewer on a phone.⌉⌊The viewer on a phone.⌉[ The viewer on a phone. [⌊Show your own part: a product page's viewer with a STEP file picked from the Media Library, view-only.⌉⌊Show your own part: a product page's viewer with a STEP file picked from the Media Library, view-only.⌉[ Show your own part: a product page’s viewer with a STEP file picked from the Media Library, view-only. ## Blocks This plugin provides 1 block. * PartWork.ai 3D Viewer A 3D viewer that shows your STEP, STL, IGES, OBJ, BREP or GLB part, or lets visitors open their own. ## Installation 1. In your WordPress admin, go to **Plugins Add New**. 2. Search for “PartWork 3D Viewer”, click **Install Now**, then **Activate**. 3. Add the **PartWork.ai 3D Viewer** block to a page, or use the shortcode below. #### Shortcode ``` [partwork_viewer] ``` With options: ``` [partwork_viewer title="Check your part" theme="light" height="600"] ``` Showing your own part: ``` [partwork_viewer model="https://yoursite.com/wp-content/uploads/bracket.step" upload="off"] ``` #### Shortcode attributes * `title` — Shown in the viewer header. * `theme` — `dark` (default) or `light`. * `height` — Height in pixels, 240 to 1200. Default 520. * `ai` — `off` hides the “Modify with AI” button. * `model` — URL of a model file on your site (https). Or `model_id` — its Media Library ID. * `upload` — `off` stops visitors opening their own files when a model is set. * `accent`, `model_color`, `background` — Hex colors, e.g. `#e11d48`. ## FAQ ### Which files can visitors open? STEP (.step, .stp), STL, IGES (.iges, .igs), OBJ, DXF, BREP and GLB. Files up to 75 MB. ### Can I show my own part on a product page? Yes. In the block’s Model settings, choose a STEP, STL, IGES, OBJ, BREP or GLB file from your Media Library (or paste its URL), or use `model="..."` in the shortcode. Turn off “Let visitors open their own files too” for a view-only product viewer. The file must be on the same site as the page (a subdomain such as a CDN on your own domain is fine), served over https, and publicly reachable. Visitors can still open DXF files themselves, but a DXF can’t be the model you show. The first view converts it, which takes a few seconds; later views are instant. A model on a local or private development site cannot be shown. On multisite, a network admin also has to add the file extensions (step, stp, stl, iges, igs, obj, brep, brp, glb) under Network Settings Upload file types. ### Is it really free? Yes. Viewing is free for you and your visitors, with no API key and no signup. The only condition is that the “Powered by PartWork.ai” link stays visible. ### Will it slow down my site? No. The viewer loads in a lazy-loaded iframe, only on pages that use the block or shortcode, and the 3D engine stays inside the iframe. ### Can I put more than one viewer on a page? Yes. Each block or shortcode is its own viewer. ### Where do I get help? Email support@partwork.ai. ## Reviews There are no reviews for this plugin. ## Contributors & Developers “PartWork.ai 3D Viewer – CAD, STEP & STL Files” is open source software. The following people have contributed to this plugin. Contributors * [ partworkteam ](https://profiles.wordpress.org/partworkteam/) [Translate “PartWork.ai 3D Viewer – CAD, STEP & STL Files” into your language.](https://translate.wordpress.org/projects/wp-plugins/partwork-3d-viewer) ### Interested in development? [Browse the code](https://plugins.trac.wordpress.org/browser/partwork-3d-viewer/), check out the [SVN repository](https://plugins.svn.wordpress.org/partwork-3d-viewer/), or subscribe to the [development log](https://plugins.trac.wordpress.org/log/partwork-3d-viewer/) by [RSS](https://plugins.trac.wordpress.org/log/partwork-3d-viewer/?limit=100&mode=stop_on_copy&format=rss). ## Changelog #### 1.1.0 * Show your own part: choose a model from the Media Library or give its URL (`model`,` model_id`). * Option to make a viewer view-only (`upload="off"`). * The Media Library accepts STEP, STL, IGES, OBJ, BREP and GLB files. #### 1.0.0 * Initial release: block and shortcode. ## Meta * Version **1.1.0** * Last updated **1 our ago** * Active installations **Fewer than 10** * WordPress version ** 6.0 or higher ** * Tested up to **7.1.2** * PHP version ** 7.4 or higher ** * Language * [English (US)](https://wordpress.org/plugins/partwork-3d-viewer/) * Tags * [3d model](https://cor.wordpress.org/plugins/tags/3d-model/)[3D viewer](https://cor.wordpress.org/plugins/tags/3d-viewer/) [CAD](https://cor.wordpress.org/plugins/tags/cad/)[stl](https://cor.wordpress.org/plugins/tags/stl/) * [Advanced View](https://cor.wordpress.org/plugins/partwork-3d-viewer/advanced/) ## Ratings No reviews have been submitted yet. [Your review](https://wordpress.org/support/plugin/partwork-3d-viewer/reviews/#new-post) [See all reviews](https://wordpress.org/support/plugin/partwork-3d-viewer/reviews/) ## Contributors * [ partworkteam ](https://profiles.wordpress.org/partworkteam/) ## Support Got something to say? Need help? [View support forum](https://wordpress.org/support/plugin/partwork-3d-viewer/)