Building a 'Useless' Experiment That Made $50K MRR

From a 'useless' API to $50K MRR with WordPress optimization

By Chris Kernaghan 3 min read
Building a 'Useless' Experiment That Made $50K MRR

So, what’s the TL;DR of how ShortPixel scaled past $50K MRR?

  • They pivoted fast when their API was too technical for users.
  • They built a simple WordPress plugin to make image optimization accessible.
  • They grew through partnerships, affiliates, and deal sites like AppSumo.
  • They optimized relentlessly to handle 20M images a day with 99.9% uptime.
  • They focused on customer needs, pricing simplicity, and long-term growth over quick wins.

ShortPixel isn’t just another image optimization tool—it’s the backbone of faster websites for over a million users. Read on to find out more.


Most founders don’t start with a grand vision. They start with an itch, an experiment, or something useless they built because they could.

That’s exactly how ShortPixel started 11 years ago. A side project with no clear direction. It was just there, sitting on underutilized servers, waiting for something to happen.

And at first, nothing did. Because, like a lot of technical projects, it was too complicated for normal users. Clever, but useless.

The Pivot That Changed Everything

The problem wasn’t the tech. The problem was access. The people who actually needed image optimization weren’t developers—they were WordPress users. And WordPress had no good image optimization plugins at the time.

So ShortPixel pivoted. Same technology, but packaged differently. A simple plugin, no technical knowledge required. First free, then, on April 1st, 2014, they flipped the switch and started charging.

Within months, it was obvious: This wasn’t just another project. It was the project. No distractions, no side hustles. Just focus. Six months later, they went all in.

Scaling Up, The Hard Way

A project that works at 100 users doesn’t necessarily work at 10,000. ShortPixel learned this fast. Growth led to outages, servers under strain, and a reality check.

“At one point, we were processing more images than our infrastructure could handle. The system buckled under the pressure, and we had to rethink everything—from storage to processing speed.” – ShortPixel Team

Scaling isn’t just about adding more hardware. It’s about fixing bottlenecks before they break everything. ShortPixel had to optimize, restructure, and build redundancy into every layer.

They went from struggling with a sudden surge in demand to processing 20 million images a day across 40+ servers with 99.9% uptime.

Not because it’s a nice metric, but because downtime kills trust.

ProblemWhat Happened?Solution
Server OverloadTraffic spikes caused slowdowns and crashes.Load balancing & autoscaling.
Storage BottleneckImage compression demands outgrew capacity.Distributed storage system.
Processing LagDelays in image optimization frustrated users.Optimized compression pipeline.
Downtime RiskSingle points of failure threatened uptime.Multi-server redundancy setup.

ShortPixel’s story is a reminder that early success can be deceptive. If you’re not thinking about scaling from day one, you’re setting yourself up for headaches down the road.

The Growth Playbook

Forget chasing virality. ShortPixel grew through boring but effective strategies:

  • WordPress Partnerships: They reached out to plugin owners in related spaces—SEO, caching, media management. Many of those partnerships still exist today.
  • Competitor Monitoring: They tracked every mention of competitors. Anytime a blog or forum mentioned an alternative, they jumped in with a better offer.
  • Customer Listening: The best feature requests came straight from users. They paid attention and built what people actually needed.
  • Affiliate Program: It wasn’t sexy, but it worked. People who loved the product got rewarded for spreading the word.
  • AppSumo Deals: Running a deal on AppSumo brought in 10,000+ customers. Many of them stayed.

Lessons from the Journey

  1. Don’t build for yourself. Cool tech isn’t a business. Useful tech is.
  2. Early users don’t just show up. You have to go where they are.
  3. Customer support isn’t a cost. It’s a competitive advantage.
  4. Simple pricing wins. Confusing pricing slows adoption.
  5. Side projects kill momentum. If you’ve got traction, double down.

The Future

ShortPixel is profitable. It makes $50k/month, and a spin-off, FastPixel, is adding another $5k. But the real play isn’t just sticking around—it’s expanding.

AI-driven optimization, better caching solutions, and a relentless focus on making websites faster without complexity. The end goal? To be the go-to for speed and image optimization.

The takeaway? The best products don’t start as businesses. They start as experiments. The difference is whether you’re willing to turn that experiment into something useful—and actually listen to the people who need it.


This story first appeared over at Indie Hackers.