How PixConverter.io Was Created – From Idea to a Fully Functional Tool
When working on (not only) web projects, I often need to quickly convert or optimize images. It may sound like a small task, but in practice, it can easily slow you down—especially when you have dozens of files in different formats and you need to maintain high quality at the smallest possible file size. Apart from using offline tools, for years I relied on various online services such as CloudConvert, TinyPNG, or Convertio. Each had its advantages, but also significant limitations: conversion limits, slow uploads, or less-than-ideal output quality.
These recurring frustrations were the driving force behind the idea of creating my own fast and simple image converter—one that wouldn’t force anyone to register, wouldn’t store any data on a server, and would run entirely in the browser.
The Initial Idea and Project Goal
From the very beginning, my requirements for the tool were clear:
- Fast – no waiting for uploads and downloads through a remote server.
- Private – all operations happen directly on the user’s device, with no images sent anywhere.
- Simple – an interface anyone can use without instructions.
- Universal – support for popular formats like JPG, PNG, WebP, AVIF, SVG, and even PDF.
Technical Solution
I decided to build the application as a single-page web app (SPA) running entirely in the browser, using JavaScript and modern APIs for image processing. Conversions are done locally thanks to the Canvas API and libraries for handling specific formats. This means users don’t need to worry about privacy or speed—everything happens instantly, without uploading to a server.
I had the basic functionality ready within a few days, but the real challenge came when fine-tuning the user interface. I wanted users to feel like they were using a professional desktop application—only in a browser. I added:
- Drag & drop uploads
- The ability to resize images (including original sizes lock)
- A clear dropdown menu for switching formats
- Batch processing of multiple files at once
- Instant previews and data-saving statistics
Optimization and Testing
I tested the tool on various browsers and devices to ensure it worked equally well on desktop and mobile. Speed was a priority, so I minimized the code and optimized internal image data processing.
Branding and Launch
Once the technical part was complete, it was time for presentation. I chose the name PixConverter.io—short, memorable, and clearly describing its purpose. I designed a clean, modern website layout to emphasize ease of use.
The official launch aimed to offer a completely free tool for everyone—no registration, no unnecessary clicks.
Why PixConverter.io Stands Out
PixConverter.io has gained users mainly thanks to:
- Instant in-browser processing
- Support for modern formats like WebP and AVIF
- Batch conversion capabilities
- Maximum focus on privacy
For me personally, this is a project that perfectly combined my skills in web development, user interface design, and SEO. Today, it serves not only me but also hundreds of people around the world—and that was my goal from the start.
