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Axonix Knowledge Base

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Deep dives into productivity, code, and design — written by developers, for developers.

How to Create a Professional Invoice (Free, With Tax Done Right)
FeaturedOctober 6, 2026

How to Create a Professional Invoice (Free, With Tax Done Right)

What a valid invoice actually needs, how to number invoices for an audit, which VAT or GST rate to charge, and how to produce a real PDF without paying for invoicing software.

Muhammad Haroon
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Passkeys and WebAuthn Level 3: How Passwordless Sign-In Actually Works
Security
Sep 27, 2026

Passkeys and WebAuthn Level 3: How Passwordless Sign-In Actually Works

WebAuthn Level 3 became a W3C Recommendation in August 2026, five years after Level 2, and passkeys now sit behind billions of active credentials. This guide walks through the cryptography that makes a passkey unphishable, the new Level 3 features, and a staged rollout plan for an app that still has password users.

Muhammad Haroon
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LLM Tokens & Prompt Caching: The Practical Guide
AI
Aug 23, 2026

LLM Tokens & Prompt Caching: The Practical Guide

A hands-on engineering guide to LLM tokens. We break down Byte-Pair Encoding quirks, hidden whitespace costs, prompt caching mechanics, and the exact context architecture that reduced our production AI bill by 68%.

Muhammad Haroon
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Inside AI Coding Agent Harnesses: OpenCode & Claude Code
AI
Aug 21, 2026

Inside AI Coding Agent Harnesses: OpenCode & Claude Code

A foundation model alone cannot edit files, run test suites, or debug code. Explore how modern coding agent harnesses like OpenCode, Claude Code, and DeepSeek scaffold raw LLMs with tool dispatch loops, subagent pipelines, and context compaction engines.

Muhammad Abdullah
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I Stopped Reading 50-Page Reports: The AI Text Summarizer Guide
AI
Aug 9, 2026

I Stopped Reading 50-Page Reports: The AI Text Summarizer Guide

I have a confession: I haven't read a full PDF in months. Here's my workflow for staying informed without drowning in documents, and why I summarize in the browser.

Muhammad Abdullah
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Axonix Open Source: Why We Build in Public and the Projects Worth Cloning
Open Source
Aug 9, 2026

Axonix Open Source: Why We Build in Public and the Projects Worth Cloning

Why we believe in open source, and a detailed look at our flagship community projects: PocketMCP for Android AI and ClearBox for Gmail cleanup.

Muhammad Abdullah
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Base64 Encoding Explained: What It Is, When You Need It, and When It'll Bite You
Base64
Aug 9, 2026

Base64 Encoding Explained: What It Is, When You Need It, and When It'll Bite You

Stop copy-pasting into random websites. Here's what Base64 encoding actually does, where it's used in real systems, and a free tool to encode and decode instantly.

Muhammad Haroon
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5 Best Free AI Image Generators in 2026 (Honest Comparison)
AI
Aug 9, 2026

5 Best Free AI Image Generators in 2026 (Honest Comparison)

I tested every major AI image generator so you don't have to. Here's what's actually free, what's actually good, and what secretly charges you.

Zohaib Rashid
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Best Free PDF Merger Tools in 2026 (No Signup, No Uploads)
PDF
Aug 9, 2026

Best Free PDF Merger Tools in 2026 (No Signup, No Uploads)

A comprehensive comparison of free PDF merger tools in 2026. Learn what to look for, why browser-based tools process files locally, and how to merge PDFs without uploading them to third-party servers.

Muhammad Abdullah
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The Science of Focus: How the Pomodoro Technique Actually Works
Productivity
Aug 9, 2026

The Science of Focus: How the Pomodoro Technique Actually Works

Can twenty-five minutes of focused work change your productivity? Here's why the Pomodoro Technique works, how to customize it, and the mistakes most people make.

Muhammad Haroon
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The Browser-First PDF Workflow: Merge, Split, and Compress Without Uploading Anything
PDF
Aug 9, 2026

The Browser-First PDF Workflow: Merge, Split, and Compress Without Uploading Anything

A practical workflow for merging, splitting, and compressing PDFs directly in your browser. No desktop software, no uploads.

Muhammad Haroon
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BMI Calculator: What It Actually Tells You (And What It Doesn't)
Health
Aug 9, 2026

BMI Calculator: What It Actually Tells You (And What It Doesn't)

Check your Body Mass Index in seconds. Here's what the number means, where BMI falls short, and why it's still useful as a starting point.

Zohaib Rashid
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