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Free Auto Lister for FB Marketplace, Craigslist, eBay, and OfferUp

CorbinWesler

Green Pea
Jul 3, 2026
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Corbin
Hey peeps! I recently had to jump back into car sales after getting laid off as a software engineer from Cars Commerce back in April. I've only been at it for a couple of weeks now, but created this little tool to help me with posting to Facebook Marketplace and some other marketplaces. It's not 100% perfect, and I'm continuing to improve it. Eventually, I'll create a more premium option with a few more polished features at a competitive price, but for now, I'm offering an alpha version free of charge. If you have any issues with anything, or would like to see any changes, let me know! It's also eventually going to be a part of an offering of a bigger project I'm working on.

You can find a download with an installation README file attached to this post.

If you are finding it useful, and would like to buy me a coffee while I get back on my feet as well as support the growth of this, I'd greatly appreciate it! Buy Me A Coffee - Rovalo Auto Lister Alpha

What it is right now:
  • You import a .csv of your inventory... this stays local in your Chrome browser storage.
  • When you import your inventory feed, you can manage your field mapping.
  • Choose the platform you want to list inventory on, click a vehicle, click "Prepare", and let the tool auto fill the fields.
  • It can also post images if there are images supplied in your feed file.
  • You have to manually import fields to keep your inventory up-to-date.
  • When something changes in the feeds, you'll get an alert. Each vehicle will show if it was a price change, mileage change, etc.
 

Attachments

  • rovalo-auto-lister-0.4.1-alpha.2.zip
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  • README.pdf
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Last edited:
For anyone needing a more visual representation on how to install and use this, I've created a quick video (no audio):
View: https://youtu.be/wRX3KMFDw6Q


A couple of things to note about Version 0.4.1:
  • It currently does not choose "Cars/Trucks" from the drop down when populating the fields. I'd suggest filling that out before auto filling the fields. If you go back and choose Cars/Trucks, it'll remove the data in the fields. You can re-populate the fields if this happens.
  • Some fields don't get populated properly if data doesn't match the drop down 100%... I've noticed that "interior color" and "exterior color" are usually the fields having issues due to factory color names not matching Facebook's generic names
  • I'd suggest against entering a VIN in the first box in the Facebook Marketplace listing. I've noticed that if you enter a VIN, Facebook will decode the engine size as 1.5L, and if you go back into edit the listing, it'll display "2020 Honda Accord". At least that's what I've experienced. There is a checkbox that allows you to add the VIN if you really want to.

Coming in Version 0.4.2 (expected release this weekend)
  • FIX: "Cars/Trucks" not getting selected from the drop down.
  • ADD: Admin panel where you can save data that will always get added to the description. ie: Salesperson contact information, hours, etc.
 

Attachments

  • Screenshot 2026-10-17 at 17.36.06.jpg
    Screenshot 2026-10-17 at 17.36.06.jpg
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  • Screenshot 2026-10-17 at 17.43.43.jpg
    Screenshot 2026-10-17 at 17.43.43.jpg
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✨ AI Highlights

A former Cars Commerce software engineer, now back in car sales, shares a free alpha tool he built for posting inventory to Facebook Marketplace, Craigslist, eBay, and OfferUp. The thread introduces the tool as a work-in-progress with plans for a premium version and broader product suite down the road. It's an early-stage offering aimed at dealers looking for a no-cost multi-platform listing solution while the developer gathers feedback.

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