DEV Community: Grumpy Food

I Made a Free Tool to Check if Your Shopify Products Are Visible to ChatGPT

Grumpy Food — Fri, 22 May 2026 18:52:40 +0000

Hey everyone! 👋

I've been working on something I think could really help store owners, and I wanted to share it directly with this community.

❓ The One Question Most Store Owners Never Ask

Shoppers are changing how they buy. Instead of just typing "running shoes" into Google, they're having full conversations with AI:

"I need comfortable running shoes for rainy weather, budget is $150."

ChatGPT, Gemini, and Perplexity answer these questions every second. But here's the scary part: if these AI assistants can't clearly understand your product pages, your store simply doesn't exist in their answers.

Most merchants check their Google ranking. Almost nobody checks their AI visibility.

🆓 A Free Checker to Solve That (No Signup)

That's why I built a completely free AI Visibility Checker.

[Try it here → prodync.com]

No accounts. No email. No credit card. Just paste a Shopify product URL and in seconds you'll see:

An AI Visibility Score (0–100): One clear number showing how well AI understands your product.
A breakdown across 5 key areas: See exactly where your product is strong and where it's invisible.
Specific, ranked fixes: Not vague advice. You'll see actions like "Add semantic attributes (+18 AI Score)" so you know exactly what to prioritize and the impact it'll have.

The goal is to answer one question in 30 seconds: "Can AI actually recommend my product?"

📈 Why Bother Optimizing for AI?

Still wondering if this is worth your time? Here's what's happening right now:

45% of online shoppers already use AI assistants for product discovery.
62% of AI shoppers use it specifically to compare products before buying.
AI-driven retail traffic grew 693% during the last holiday season.

The people are already there. Making sure your products are clearly readable by these systems is becoming a huge advantage. This free checker makes it easy to see where you stand right now.

🚀 Give It a Try

If you have a Shopify store (or even just a favorite product link), try it out:

[prodync.com]

I'd love to know your results. Drop your score in the comments! 👇

You Can Now Track If Your Client Opened Your Invoice – And It's 100% Free

Grumpy Food — Sun, 10 May 2026 11:55:26 +0000

You sent the invoice.

Now you wait.

A day passes. Three days. A week.

Then you send the awkward message:

"Hi, just checking if you got my invoice..."

What If You Did Not Have to Guess?

Now you do not.

FreeInvoiceFlow just launched a new feature: Invoice Status Checker.

Here is how it works:

Create your invoice (no signup, no watermark, free)

Click "Create Tracking Link"

Get two things: Client Link (send to your customer) and Private Check Code (keep for yourself)

Your client opens the link – they see only the invoice

You go to "Check Status" page, enter your code

You see: Viewed or Not Viewed + how many times + when

No More Guessing

Before: "Did they see it?"
After: You know exactly when they opened it

Before: "Should I follow up?"
After: Check first. Follow up only if needed

Before: Awkward emails
After: Confident, data-backed messages

Why I Built This

Freelancers on Reddit told me the real problem is not creating invoices.

It is what happens after.

"The painful part is usually after the invoice is sent. Did the client open it? When is it overdue? What do I send without sounding awkward?"

So I built exactly what they asked for.

And Yes – It Is Still 100 Percent Free

No signup. No email required. No watermark. No upgrade to pro. No limits. No credit card.

Just free tools for freelancers.

Try It Right Now

freeinvoiceflow.com

Create an invoice. Click "Create Tracking Link." Send it to yourself first to see how it works.

You will never send an awkward "did you get my invoice?" email again.

One More Thing

If you find this useful, share it with a fellow freelancer. That is all I ask.

Now go track your invoices.

I Built a Free Invoice Generator That Got 85 Google Impressions in 7 Days (No Signup, No Watermark)

Grumpy Food — Tue, 05 May 2026 11:42:57 +0000

I Built a Free Invoice Generator That Got 85 Google Impressions in 7 Days (No Signup, No Watermark)

The bottom line: You don't need another subscription. You don't need to store user data on your servers. And you definitely shouldn't have to pay $15/month for a tool you use three times.

This is the story of how I built FreeInvoiceFlow – a 100% free, no-signup invoice generator.

The Problem That Drove Me Crazy

Last month, I sent four invoices. Just four. My invoicing software charged me $15.

That's $3.75 per invoice.

I looked for alternatives. Every "free" plan had:

❌ Watermarks on the final PDF
❌ Limits of 5–10 invoices
❌ Required signup with email (then spam)
❌ Hidden "premium" features behind paywalls

As a developer, I thought: I can build this.

So I did.

The Tech Stack (Privacy First)

The core requirement: no data storage on my servers.

Component	Technology
Frontend	HTML5, CSS3, Vanilla JavaScript
PDF Generation	Browser's native PDF API
Data Processing	100% client-side
Storage	None (zero databases)
Hosting	Static hosting (Netlify/Vercel)

How it works:

User fills form in their browser
JavaScript processes everything locally
PDF generated via browser API
User downloads file
Nothing touches my server

No accounts. No passwords. No data breaches to worry about.

The Features I Built

A professional invoice generator needs specific features:
✅ FROM / BILL TO sections (clear separation)
✅ Logo upload (PNG/JPG, client-side preview)
✅ 5 color schemes (CSS variables)
✅ Item-level tax (each line has its own rate)
✅ Discounts (percentage or fixed)
✅ VAT (additional tax on total)
✅ Notes field (payment terms, thank you)
✅ Sequential invoice numbers
✅ Live preview (updates as you type)
✅ Instant PDF download

No watermark. Ever. That was a hard requirement.

The Unexpected Challenge: PDF Layout

Getting the PDF to look exactly like the live preview was harder than expected.

The browser's print API has limitations. I had to:

Create a hidden DOM structure for PDF generation
Duplicate CSS styles specifically for print media
Debug cross-browser inconsistencies (Chrome vs Safari vs Firefox)

This took 3x longer than building the form itself.

The Early Results (First 7 Days)

Launched with zero marketing budget. Just posted on a few communities.

Google Search Console data:

Metric	Value
Impressions	85
Clicks	6
CTR	7.1%
Average Position	72

Tiny numbers. But for a 7-day-old domain with no backlinks? I'll take it.

How I Monetize (Transparent)

Simple, non-intrusive ads on the website.

That's it.

What I DON'T do:

❌ No paid "premium" tiers
❌ No data selling
❌ No watermarks (ever)
❌ No email collection
❌ No hidden fees

The ads cover hosting costs. That's the whole business model.

What I Learned Building In Public

1. Start with the smallest viable product
My first version had no logo upload, no color schemes, no item-level tax. Just the basics. I added features based on user requests.

2. Privacy is a competitive advantage
"Your data never leaves your browser" is a powerful statement when competitors store everything.

3. "Free forever" is a commitment, not a marketing gimmick
If I ever add a paid tier, I lose trust. So I won't.

Try It Yourself

👉 FreeInvoiceFlow.com – No signup. No watermark. Free forever.

Create your first invoice in under 60 seconds.

What's Next (Roadmap)

[ ] Local storage save (persist data in browser)
[ ] Multi-currency support
[ ] Dark mode
[ ] More invoice templates
[ ] CSV/Excel export

No paid tiers. No watermarks. Ever.

Built by a solo developer who was tired of subscription fees.

P.S. I'm still learning. If something is broken or missing, tell me in the comments. I actually listen.