Why I built ListingPrep

Who I am

I run a wall art shop on Etsy, where I design and sell printable posters — most of them created with Midjourney and finished by hand. I'm French, based in Indonesia, and I work the way most sellers do: solo, online, figuring it out as I go.

That's the whole credential, and I think it's the right one. I'm not a software company that looked at wall art and decided it was a profitable vertical to build for. I'm a seller who got tired of the busywork around the selling and started building small tools to kill it. Everything on this site came out of my own shop first.

Why I made the tools free

Here's the part of selling printables nobody warns you about: preparing the files is where the hours go. One design has to become a dozen print sizes. Each one needs the right resolution or it prints blurry. Then the whole thing has to be packaged so a buyer can actually download it. None of that work sells a single extra print — it's pure overhead, repeated for every new design.

The tools that existed wanted a monthly subscription for something I do every week. Or they were heavy desktop apps with a real learning curve. Or they quietly uploaded my files to someone else's server. I didn't want any of that. I wanted something I could open, use in two minutes, and close — no account, no monthly fee, no handing my files to a stranger.

So I built it, one tool at a time, for my own shop. And that's the rule I hold myself to with everything I publish here: I don't list a tool I haven't used myself. Each one started as something I made because I needed it, used until it actually worked, then cleaned up to share. If you see it on this site, it's because it earned its place in my own workflow first.

What you'll find here

Three free tools, all browser-based, no signup:

• Resize — drop a design and get every print size at 300 PPI in a single click.
• Mockup — turn a flat file into realistic, framed-in-a-room previews, without Photoshop.
• PDF Maker — package your files into a clean delivery PDF with download links, for when they're too large to attach to a listing.

Two calculators for the money side — an Etsy fee calculator and an Etsy ad / ROAS calculator — so you can see what a sale actually leaves you, and whether your ads are paying for themselves.

And a growing blog of guides on the things sellers genuinely get stuck on: print resolution, which sizes to sell, making mockups that convert, Etsy fees. Plain, tested, no fluff.

One thing that matters to me: your files stay yours. The tools run in your browser, and if you connect Google Drive, the files stay in your Drive. Nothing is uploaded to me, and there's no account for me to hold your work behind.

How the site makes money

The tools are free and I intend to keep them that way, so it's fair to be straight about how the site pays for itself. Two ways, and that's it:

• Affiliate links, at the moment they're actually useful. If a tool here hits a limit it can't cover — say your image is too small and you need to genuinely upscale it — I'll point you to something that does the job, and if there's an affiliate link behind it, I use it. I only recommend tools I've used myself, and I'll never send you to a paid product for something this site already does for free.
• Ads on the written content. The blog carries ads. The tools don't. I'm not going to clutter a tool you're trying to get work done in.

No upsell, no "pro" tier holding the good features hostage, no data sold to anyone. If a recommendation has an affiliate link behind it, it's because I'd recommend the thing with or without one. That's the same promise that's in the footer of every page on this site.

My other projects

Alongside ListingPrep, I still run my own Etsy wall art shop — the one that started all of this and keeps me honest, because I'm using these tools on real listings every week. I also built a couple of standalone Etsy calculators before folding the same logic into this site. Same person, same approach throughout: build the thing I need, use it until it works, then share it.

Get in touch

Found a bug, want a tool that doesn't exist yet, or just want to tell me something's still annoying? I read everything — the contact page, or [email protected]. I can't promise to build every request, but the best features here exist because a seller told me what was still getting in their way. If you sell printable wall art, you and I are solving the same problems — so tell me what's slowing you down.