3D model search engines compared: Yeggi, STLFinder, Thangs, Google and Yigo

29 September 2026 · 4 min read

There are millions of 3D printable models spread across dozens of sites, and searching them one by one is slow. Search engines and aggregators try to search them all at once, but they work very differently. Here’s how the main ones compare on the four things that matter most: how much they cover, how good their results are, how fast they are, and what they ask of you in return.

A note before we start: we make Yigo, one of the tools below. We’ve tried to be fair. Where another tool is better at something, we say so, and every figure about another site comes from that site’s own pages, checked on 29 September 2026 (see Sources).

At a glance

Coverage: how many models can you reach?

On size, Yeggi, STLFinder and Thangs are far ahead. Yeggi’s home page counts more than 10 million models, and STLFinder says it indexes more than 6 million from 19 platforms. If you need the widest possible net, for an unusual part or a rare character, start with one of them.

Yigo is small by comparison, on purpose. It only adds a site when it can do so the way that site allows: through an official API, or by reading only the pages the site’s robots.txt permits. Printables and MakerWorld block automated access, so Yigo has asked them for permission and leaves them out until they agree. If a site you like isn’t in Yigo yet, its own search is always there.

Search quality: do the results match what you asked?

A huge index is only useful if the right models come first. Each tool has its own approach:

• Thangs does something none of the others do: geometric search. Upload a 3D file and it looks for models with a similar shape, which is handy for replacement parts when you don’t know what the part is called.
• Google is excellent at understanding questions, but model pages compete with blogs, videos and shops. Adding site: helps, for example articulated frog site:printables.com.
• Yeggi and STLFinder search titles and descriptions across many sites, with filters to narrow things down.
• Yigo ranks the way classic search engines do, with no AI. Rare words count for more than common ones, so a search for articulated skeleton frog returns frogs (17 of them when we checked) rather than every articulated model on the site. Results with all your words, close together in the title, come first, small typos are fixed for you, and results that don’t really match are left out instead of padding the page. The full explanation is on this blog.

Our honest advice: no tool gets every search right. If the first one doesn’t find it, try the same words in a second.

Speed

We only timed Yigo. On 29 September 2026, a search took about a third of a second from asking to answer, and repeated searches come straight from Cloudflare’s cache, which is quicker still. Yigo’s pages carry no ads or tracking scripts, so there’s less to download.

We didn’t time the other tools: speed depends on your connection, where you are and how busy a site is at that moment, so any number we gave would mostly measure us. The best test is your own: search for the same thing in each and see what feels quick.

Privacy: what you give in return

Free tools are paid for somehow, and it’s worth knowing how. Yeggi’s home page has an advertising section, and a free account for saving lists. Thangs’ pages say that downloading its free models needs a free Thangs account. Google is an advertising company, and what it keeps about your searches depends on your Google account’s settings. None of that is unusual, but it adds up.

Yigo takes the opposite approach:

• No accounts, no ads, and no cookies for visitors.
• It counts totals, such as how many searches were made each day, never who made them.
• Your favorites, and what Yigo learns about the models you like, stay in your own browser and are never sent to Yigo. You can see what it has learned, delete it, or turn it off.

The privacy policy lists everything Yigo keeps, in plain words.

Which should you use?

• The widest net: Yeggi or STLFinder.
• A part you can’t name, but have a file for: Thangs’ search by shape.
• Everything around a model, such as print settings or videos: Google.
• One site you already use: its own search.
• Several sites at once, with no account, no ads and no tracking, or just browsing when you don’t know what you want yet: Yigo. Scroll down its home page for popular models by topic, or open the feed.

Sources

Checked on 29 September 2026. Figures are each site’s own and may have changed since.

• Yeggi’s home page (index size, lists, advertising)
• STLFinder’s About page (models and platforms)
• Thangs’ free models (free account to download)
• About Yigo (sources and how they’re added)