PartWork.ai 3D Viewer – CAD, STEP & STL Files
Let visitors open STEP, STL, IGES and other CAD files in a free 3D viewer on your site. Nothing for them to install.
Solid choice
PartWork.ai 3D Viewer is a solid plugin choice in 2026, with a few things worth checking first. Was last updated 2 weeks ago, and scores 64/100 on our health check.
- Actively developed — last update 2 weeks ago
- Tested with the latest WordPress (7.1)
- Small user base (<10 active installs)
- Very few reviews so far
How does it stack up?
Side-by-side on installs, updates, ratings & support
Daily downloads
Download spikes usually follow a new release — each site that auto-updates counts as a download.
Rankings
Where PartWork.ai 3D Viewer stands todayWordPress.org search rankings
Live position in the plugin search, top 100| Keyword | Position |
|---|---|
| 3d model | >100 |
| 3D viewer | >100 |
| CAD | #31 |
| step file | >100 |
| stl | #12 |
About PartWork.ai 3D Viewer
From the official readme · v1.1.0Description
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 oncdn.partwork.aito 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.aito 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 withai="off".
Links:
- Viewer and documentation: partwork.ai/embed
- Embed license: partwork.ai/viewer-license
- Terms of service: partwork.ai/terms-of-service
- Privacy policy: partwork.ai/privacy-policy
- Cloudflare Turnstile privacy: cloudflare.com/turnstile-privacy-policy
Installation
- In your WordPress admin, go to Plugins → Add New.
- Search for “PartWork 3D Viewer”, click Install Now, then Activate.
- 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) orlight.height— Height in pixels, 240 to 1200. Default 520.ai—offhides the “Modify with AI” button.model— URL of a model file on your site (https). Ormodel_id— its Media Library ID.upload—offstops visitors opening their own files when a model is set.accent,model_color,background— Hex colors, e.g.#e11d48.
Frequently asked questions
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…
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.
Changelog
Show your own STEP, STL or other CAD part on any page.
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.
Screenshots
For developers
Is this your plugin? Show off the numbers.
Add a live badge to your site, docs or GitHub README. It updates on its own — no account needed.
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FAQ
PartWork.ai 3D Viewer: quick answers
Straight answers, pulled from live WordPress.org data.
Live data from WordPress.org · checked Oct 20, 2026
Is PartWork.ai 3D Viewer free?
Yes. PartWork.ai 3D Viewer is free to download and use from the official WordPress.org plugin directory.
Is PartWork.ai 3D Viewer safe to use in 2026?
PartWork.ai 3D Viewer is a solid plugin choice in 2026, with a few things worth checking first. Was last updated 2 weeks ago, and scores 64/100 on our health check.
How many websites use PartWork.ai 3D Viewer?
PartWork.ai 3D Viewer is active on <10 WordPress websites and has been downloaded 372 times since it launched in October 2026. It was downloaded 378 times in the last 30 days.
Does PartWork.ai 3D Viewer work with WordPress 7.1?
Yes. The developer has tested PartWork.ai 3D Viewer up to WordPress 7.1.3, the latest release. It requires WordPress 6.0 or newer.
What PHP version does PartWork.ai 3D Viewer need?
PartWork.ai 3D Viewer requires PHP 7.4 or higher. Most hosts run PHP 8.x today, so it works on any modern WordPress hosting.
When was PartWork.ai 3D Viewer last updated?
The latest version, 1.1.0, was released on October 5, 2026 (2 weeks ago).
Who makes PartWork.ai 3D Viewer?
PartWork.ai 3D Viewer is developed and maintained by PartWork AI.
What are the best alternatives to PartWork.ai 3D Viewer?
The most popular alternatives to PartWork.ai 3D Viewer are 3D Viewer Block (1K+ installs), 3D viewer by Visody (1K+ installs) and Augmented Reality Viewer (400+ installs).
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