Microsoft Veteran Rebuilds Notepad in Just 25KB, Exposing How Modern Software Lost Its Way + Video

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Introduction: When Simplicity Becomes a Revolution

Software has become bigger, heavier, and increasingly dependent on layers of frameworks that many users never notice. Every major operating system update promises smarter features, AI integration, and modern interfaces, yet many longtime Windows users continue asking a simple question: Does software really need to become more complex just to accomplish basic tasks?

That debate has returned to the spotlight thanks to Dave Plummer, a retired Microsoft engineer famous for creating Windows Task Manager and helping deliver the legendary Space Cadet Pinball. His latest experiment, TinyRetroPad, isn’t just another lightweight text editor. It is a powerful demonstration that decades-old engineering principles can still outperform many modern development trends.

TinyRetroPad: A Complete Notepad in Only 2.5 Kilobytes

Dave Plummer has successfully recreated a fully functional version of Notepad inside an executable measuring approximately 2.5KB. Despite being smaller than many modern application icons, TinyRetroPad still includes features most users expect from a text editor.

The tiny application supports:

Opening and saving files

Find and Replace

Printing

Font selection

Word Wrap

Clipboard operations

Unsaved changes warnings

The accomplishment immediately caught the attention of Windows enthusiasts because modern software often consumes hundreds or even thousands of times more storage while offering similar core functionality.

Rather than being a practical replacement for

A Veteran Engineer Challenges Modern Windows

Over the past several months, Dave Plummer has openly criticized the direction Windows 11 has taken.

According to Plummer, Microsoft should dedicate an entire development cycle to stability, reliability, and optimization instead of continuously introducing new features. He compares the situation to Windows XP Service Pack 2, a release remembered for dramatically improving security and reliability rather than expanding functionality.

He has also criticized Windows 11 for increasingly behaving as a platform that promotes Microsoft’s ecosystem, frequently encouraging users to adopt Edge, OneDrive, and Copilot instead of focusing solely on the operating system itself.

His TinyRetroPad project reinforces that message by proving how capable Windows already is beneath its modern interface.

The Secret Behind a 2.5KB Windows Application

The astonishing size of TinyRetroPad

Windows itself already contains most of the components required to build a traditional desktop application.

Instead of packaging everything inside the executable, TinyRetroPad simply relies on operating system services that already exist.

These built-in components include:

Window management

Standard menus

Clipboard support

Common dialog boxes

Printing infrastructure

Text editing controls

Font selection interfaces

Plummer describes this philosophy perfectly by saying a tiny Windows application “arrives with a lunchbox and a map of the city.”

Rather than carrying its own infrastructure, it simply borrows what Windows already provides.

This approach dramatically reduces executable size while maintaining full functionality.

Building on Decades of Windows Engineering

TinyRetroPad

The project evolved from

TinyRetroPad itself is a fork of Matt Power’s Dave’s Tiny Editor, with continuous improvements and optimizations made over time.

Internally, the editor relies heavily on

This single component already performs most complex text editing operations, including:

Cursor movement

Text rendering

Undo history

Text selection

Copy and paste

Keyboard input

Instead of rewriting decades of engineering work, TinyRetroPad simply asks Windows to do what Windows has always done.

Every New Feature Had a Measurable Cost

One of the most fascinating aspects of the project is Plummer’s detailed record of file size growth.

Each feature added only a few hundred bytes.

Development milestones included:

Base editor: under 1KB

File menu: approximately 1,375 bytes

Unsaved changes warning: 1,622 bytes

Find and Replace: 2,143 bytes

Printing support: 2,476 bytes

Seeing an

Compression Played an Important Role

TinyRetroPad also benefits from a specialized linker called Crinkler, originally designed for the demoscene community.

Unlike ordinary executable compressors, Crinkler reorganizes program structure to maximize compression efficiency.

Interestingly, beautifully written code

Sometimes repetitive code compresses more effectively than elegant abstraction, leading to unexpectedly smaller executables.

This creates an unusual situation where engineering decisions are influenced not only by readability but also by compression behavior.

TinyRetroPad Is Still an Experimental Project

Although the application is technically impressive, it remains an experimental proof of concept rather than a finished consumer product.

Users currently need to build it themselves using MASM and Crinkler because no official release binaries exist.

Plummer also warns that aggressively compressed executables may trigger antivirus false positives.

Community testing has revealed additional limitations, including:

High memory usage under certain legacy Windows configurations

Compatibility issues with Windows XP SP3

Experimental stability

These trade-offs remind us that TinyRetroPad’s primary objective is demonstrating software efficiency, not replacing Microsoft’s official editor.

Why Modern Notepad Faces Growing Criticism

Microsoft’s Notepad has changed dramatically over recent years.

Once famous for being one of the simplest applications in Windows, it has gradually transformed into a feature-rich editor incorporating modern technologies.

Recent additions include:

Tabs

Automatic saving

Markdown support

AI writing assistance

Image support

Table creation

Deep Copilot integration

While some improvements genuinely enhance productivity, others have sparked criticism for moving far beyond the purpose of a plain text editor.

Many longtime users argue that Microsoft removed the simplicity that originally made Notepad valuable.

When Extra Features Also Increase Risk

More functionality

It also expands the

As additional parsing engines, AI integrations, and document handling capabilities are introduced, more opportunities emerge for security vulnerabilities.

One widely discussed vulnerability demonstrated how Markdown processing inside modern Notepad could contribute to remote code execution scenarios under specific conditions.

Traditional plain-text editors never faced many of these risks simply because they processed plain text and nothing more.

The incident reignited conversations about whether every application truly benefits from continuous feature expansion.

Windows Still Contains the Simplicity Users Remember

Ironically,

Windows 10 also retains a far more familiar experience.

TinyRetroPad therefore

Instead, it reminds users that the classic Windows philosophy still exists beneath layers of modernization.

Plummer’s message is ultimately less about text editors and more about software design itself.

Modern developers often bundle complete ecosystems inside every application, while earlier generations relied on operating systems to provide common functionality.

That difference alone explains why many applications today consume hundreds of megabytes before performing relatively simple tasks.

The Bigger Debate: Efficiency Versus Endless Expansion

TinyRetroPad arrives during a period where discussions around software bloat have become increasingly common.

Many modern applications depend on large frameworks, embedded browsers, telemetry systems, AI services, and cloud synchronization.

Although these technologies unlock impressive capabilities, they also consume additional memory, increase startup time, and complicate maintenance.

Efficiency no longer appears to be the

Instead, software frequently grows simply because hardware has become powerful enough to tolerate inefficiency.

TinyRetroPad challenges that assumption by proving that thoughtful engineering can still accomplish remarkable things with astonishingly little code.

Deep Analysis: Lessons for Modern Software Engineering

TinyRetroPad demonstrates that operating systems remain powerful development platforms rather than merely launchers for self-contained applications.

Developers should reconsider how much functionality truly needs to be bundled inside every executable.

Native Windows APIs continue offering efficient solutions that many modern frameworks ignore.

Reducing dependencies often improves startup speed, memory usage, portability, and maintainability.

Engineering discipline frequently matters more than raw computing power.

Minimalism is not about removing features but about avoiding unnecessary duplication.

Modern software increasingly depends on browser engines even when rendering simple interfaces.

Legacy Win32 programming still provides exceptional responsiveness for desktop workloads.

Optimization should begin during architecture planning rather than after software becomes slow.

Efficient code generally reduces energy consumption across millions of computers.

Smaller binaries simplify deployment, embedded systems, and enterprise management.

Framework convenience often comes with significant hidden overhead.

Windows continues providing mature APIs that remain highly capable decades later.

Backward compatibility remains one of

Developers should measure performance continuously instead of assuming newer technologies are automatically faster.

Executable size alone does not define quality, but unnecessary growth deserves scrutiny.

Software longevity often depends on simplicity.

The more moving parts an application contains, the more opportunities exist for bugs.

Native applications frequently outperform equivalent web-based desktop software.

Memory usage deserves attention even on systems with abundant RAM.

Fast startup contributes significantly to perceived responsiveness.

Traditional desktop engineering still offers valuable lessons for current developers.

Reducing dependencies lowers maintenance complexity.

Applications should use operating system services whenever practical.

Efficient software scales better across older hardware.

Thoughtful optimization benefits battery-powered devices.

Modern UI design does not require inefficient architecture.

Every added feature introduces future maintenance costs.

Software should solve user problems instead of showcasing technology.

Profiling should guide optimization rather than assumptions.

Developers must balance innovation with stability.

Backward compatibility remains a competitive advantage.

Native APIs continue evolving without abandoning historical functionality.

Performance remains a feature users notice immediately.

Lightweight applications improve enterprise deployment efficiency.

Engineering craftsmanship becomes visible through restraint.

Minimalism can coexist with usability.

The TinyRetroPad project reminds the software industry that elegance often comes from doing more with less.

What Undercode Say:

TinyRetroPad is far more significant than a tiny text editor.

It exposes a philosophical divide inside modern software engineering.

Today’s development culture often prioritizes development speed over runtime efficiency.

Frameworks accelerate production but frequently hide enormous computational costs.

Plummer reminds the industry that operating systems already solve countless engineering problems.

Native APIs remain underutilized despite decades of refinement.

Windows itself is an enormous software library waiting to be leveraged.

Many modern applications duplicate services already provided by the OS.

This duplication inflates memory usage unnecessarily.

Large software

However, unexplained growth deserves technical justification.

Every megabyte shipped should deliver measurable user value.

AI integration is useful only when users actively benefit from it.

Adding features because competitors have them weakens product identity.

Classic Windows applications succeeded because they focused on doing one task exceptionally well.

Modern engineering should combine today’s user experience with yesterday’s efficiency.

Performance optimization should return to being a primary development objective.

Software maintenance costs increase alongside architectural complexity.

Minimal dependencies often improve long-term reliability.

The industry increasingly mistakes hardware improvements for software improvements.

Powerful CPUs should enable richer experiences rather than excuse inefficient code.

Native desktop development remains highly relevant.

Thoughtful architecture frequently matters more than programming language choice.

TinyRetroPad demonstrates the value of understanding operating system internals.

Future developers can learn important lessons from legacy Windows programming.

Efficiency also benefits sustainability through reduced energy consumption.

Enterprise customers continue demanding predictable software behavior.

Windows LTSC demonstrates there is still demand for simpler software.

Minimal applications reduce attack surfaces.

Smaller executables simplify distribution and auditing.

Engineering excellence often becomes invisible because users simply experience speed.

Good software should disappear behind productivity rather than constantly demanding attention.

TinyRetroPad is unlikely to replace Notepad.

Yet it successfully replaces assumptions about what modern software must become.

The project encourages developers to rethink dependency-heavy architectures.

Optimization remains one of software

Innovation and efficiency should complement each other rather than compete.

The future of desktop software should embrace both modern functionality and timeless engineering principles.

✅ Dave Plummer is a former Microsoft engineer known for creating Windows Task Manager and contributing to Space Cadet Pinball, making his involvement in TinyRetroPad credible.

✅ TinyRetroPad genuinely demonstrates how Windows applications can remain extremely small by relying on native Win32 APIs and existing operating system components instead of bundling external frameworks.

✅ The criticism surrounding modern

Prediction

(+1) Native desktop optimization will receive renewed interest as developers seek faster, more efficient applications capable of running well across both modern and aging hardware.

(-1) If feature expansion continues without stronger optimization efforts, more Windows applications may experience increased memory consumption, slower startup times, and growing user frustration over software bloat.

(+1) Projects like TinyRetroPad will likely inspire a new generation of developers to revisit classic Win32 programming techniques and build software that balances modern functionality with exceptional efficiency.

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