---
title: "Favicon Maker: A Small Tool That Earned Its Keep"
description: "Favicon Maker turns a single logo into every favicon and icon size a site needs. A small, sharp tool that taught me the value of doing one thing well."
type: "build"
locale: "en"
category: "tool"
canonical: "https://agenticschool.dev/builds/favicon-maker"
dateModified: "2026-06-12"
---

# Favicon Maker: A Small Tool That Earned Its Keep

- Category: tool
- Status: live
- Stack: TypeScript, Canvas, Sharp, React, Vercel
- Updated: 2026-06-12
- Keywords: favicon, logo tool, icon generator, SEO, scope
- Canonical URL: https://agenticschool.dev/builds/favicon-maker
- Locale: en

> A focused logo-to-favicon generator, and a lesson in scope.

Favicon Maker turns a single logo into every favicon and icon size a site needs. A small, sharp tool that taught me the value of doing one thing well.

## Why a whole tool for favicons

Every site needs a favicon, and not just one file: there is the classic .ico, a pile of PNG sizes for different devices, an apple-touch-icon, and a manifest entry. Doing it by hand is fiddly and easy to get subtly wrong, which is why so many sites ship a blurry icon. I wanted to drop in one clean logo and get the complete, correct set out.

## Keeping the scope brutally small

The temptation with a tool like this is to keep adding: a logo editor, background removal, an icon library, accounts. I resisted all of it. Favicon Maker does exactly one job, and that constraint is the whole reason it is good.

- One input: your logo. One output: every favicon and icon size, correctly named.
- No accounts, no upsell, no settings nobody understands.
- Because it does one thing, it is easy to trust and impossible to get confused by.

## What the favicon trick taught me about SEO

Building this pushed me down a rabbit hole that turned out to matter: the favicon is the little thing that shows up next to your result in search and in browser tabs, and a crisp, recognisable one quietly improves how trustworthy your link looks. A tiny detail most people ignore is exactly the kind of edge that compounds. The tool was small, but the lesson was not: sharp, correct details at every size are part of looking professional, and looking professional is part of getting clicked.

## Lessons learned

- A tool that does one thing perfectly beats a sprawling one that does ten things adequately.
- Scope discipline is a feature. Every setting you do not add is one less thing to confuse the user.
- Small visual details, like a crisp favicon, quietly affect trust and click-through. They are worth getting right.
- Generate the complete correct set programmatically. Humans forget sizes; code does not.