Ruwan Suraweera

Ruwan Mangala Suraweera is a dedicated ICT Educator and web developer based in Sri Lanka, actively teaching and creating educational tech solutions since 2008. He holds a BSc in Physical Science from the University of Kelaniya. Ruwan is the founder of PrimeToolHub.com, where he engineers 100% free, secure, and offline client-side web utilities that protect user privacy. Recognizing the educational challenges during the COVID-19 pandemic, he also developed schoolict.net to provide free self-study resources and digital management tools, such as the Offline School Bell System, to empower students and teachers across the country.

📂 Ruwan Suraweera ARTICLES

How AI Removes Backgrounds and Objects from Photos
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JUL 8,
2026
(UPDATED:
JUL 8,
2026)
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IMAGE TOOL ARTICLE

How AI Removes Backgrounds and Objects from Photos

How AI Removes Backgrounds Three different AI techniques sit behind a simple “remove”...

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How AI Removes Backgrounds and Objects from Photos

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How AI Removes Backgrounds

How AI Removes Backgrounds Three different AI techniques sit behind a simple “remove” button — segmentation, inpainting, and super-resolution. Here’s what each one is actually doing, and why running them in your browser matters. Last updated: July 2026 🔴 Background Removal Is Really “Segmentation” When a tool removes a background, it isn’t erasing anything at … Read more

How to Blur Faces in Photos and Videos for Free
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JUL 5,
2026
(UPDATED:
JUL 9,
2026)
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IMAGE TOOL ARTICLE

How to Blur Faces in Photos and Videos for Free

How to Faces Blur in Photos and Videos for Free A practical walkthrough...

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How to Blur Faces in Photos and Videos for Free

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Blur Faces in Photos and Videos

How to Faces Blur in Photos and Videos for Free A practical walkthrough for anonymizing faces before you post — whether it’s one photo or a full video clip, done entirely in your browser. Last updated: July 2026 🔴 How a Computer Actually Finds a Face Face detection sounds like it should be complicated, and … Read more

Complete Guide for Developers, Data Teams and Label Printing | CSV File Format Guide
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JUL 3,
2026
(UPDATED:
JUL 9,
2026)
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DATA CONVERTERS ARTICLE

Complete Guide for Developers, Data Teams and Label Printing | CSV File Format Guide

Data Teams and Label Printing A complete technical guide to the CSV file...

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Complete Guide for Developers, Data Teams and Label Printing | CSV File Format Guide

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CSV File Format

Data Teams and Label Printing A complete technical guide to the CSV file format — structure, parsing rules, encoding, common pitfalls and practical use cases including label printing and data export. Last updated: July 2026 🔴 CSV Structure — What the Format Actually Specifies (and What It Doesn’t) CSV has a formal specification in RFC … Read more

AI Text Summarizer Guide — 6 Tools in One: Summarize, Analyze, Rewrite & Export
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JUL 2,
2026
(UPDATED:
JUL 4,
2026)
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AI ASSISTANT ARTICLE

AI Text Summarizer Guide — 6 Tools in One: Summarize, Analyze, Rewrite & Export

AI Text Summarizer Guide | 6 Tools in One Free offline AI text...

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AI Text Summarizer Guide — 6 Tools in One: Summarize, Analyze, Rewrite & Export

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AI Text Summarizer Guide

AI Text Summarizer Guide | 6 Tools in One Free offline AI text summarizer with 6 tabs: Summarize, Analyze (Flesch score, keyword density), Rewrite (5 modes), and Export in TXT/PDF/MD/JSON/SRT. 100% private. Last updated: June 2026 🔴 What Is an AI Text Summarizer? An AI text summarizer is a tool that uses a machine learning … Read more

Free AI Speech-to-Text Transcription Tool Guide— 100% Offline, 5-Tab Workspace
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JUN 29,
2026
(UPDATED:
JUL 10,
2026)
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AUDIO TOOLS ARTICLE

Free AI Speech-to-Text Transcription Tool Guide— 100% Offline, 5-Tab Workspace

Speech-to-Text Transcription Guide Convert audio and video to text free with this AI...

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Free AI Speech-to-Text Transcription Tool Guide— 100% Offline, 5-Tab Workspace

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Transcription Tool Guide

Speech-to-Text Transcription Guide Convert audio and video to text free with this AI offline transcription tool. Whisper AI, 20 languages, SRT/VTT/PDF/JSON export, Smart Notes, Deep Analytics — 100% private. Last updated: June 2026 🔴 What Is an AI Offline Transcription Tool? An AI offline transcription tool converts spoken audio into written text using a machine … Read more

SVG File Format — Complete Technical Guide for Web Developers
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JUN 29,
2026
(UPDATED:
JUL 9,
2026)
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WEB DEVELOPMENT ARTICLE

SVG File Format — Complete Technical Guide for Web Developers

SVG File | Technical Guide SVG File Format (Scalable Vector Graphics) is XML-based,...

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SVG File Format — Complete Technical Guide for Web Developers

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SVG File Format

SVG File | Technical Guide SVG File Format (Scalable Vector Graphics) is XML-based, resolution-independent, and renders natively in every modern browser. This guide covers how SVGs work internally, how browsers parse and render them, when to rasterize, and how to optimize them for real production use. Last updated: June 2025 🔴 What SVG Actually Is … Read more

Complete Guide to Free Online Activity Maker | interactive learning
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JUN 28,
2026
(UPDATED:
JUL 9,
2026)
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EDUCATION TOOL ARTICLE

Complete Guide to Free Online Activity Maker | interactive learning

Guide to Free Online Activity Discover Interactive Learning Studio Pro — make crosswords,...

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Complete Guide to Free Online Activity Maker | interactive learning

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interactive learning Gide

Guide to Free Online Activity Discover Interactive Learning Studio Pro — make crosswords, word searches, drag-sort, match pairs and memory games free. AI-powered, offline, no signup needed. Last updated: June 2026 🔴 What Is Interactive Learning Studio Pro and Who Is It For? Most activity generators do one thing. A crossword tool makes crosswords. A … Read more

How Browser Code Editors and AI Assistants Work | Editor Engines, Syntax Highlighting & In-Browser AI
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JUN 27,
2026
(UPDATED:
JUL 17,
2026)
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AI ASSISTANT ARTICLE

How Browser Code Editors and AI Assistants Work | Editor Engines, Syntax Highlighting & In-Browser AI

How Browser Code Editors and AI Assistants Work Syntax highlighting is not magic...

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How Browser Code Editors and AI Assistants Work | Editor Engines, Syntax Highlighting & In-Browser AI

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Monaco editor AI assistant

How Browser Code Editors and AI Assistants Work Syntax highlighting is not magic and an in-browser editor is not a text box. A concept guide to the engines that power web-based coding — tokenizers, editor libraries, and the AI layer that now sits on top of them. Last updated: July 2026 🔴 A Code Editor Is … Read more

SEO Meta Tags Complete Guide — Title Tags, Open Graph, JSON-LD Schema, Robots, and Canonical URLs
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JUN 24,
2026
(UPDATED:
JUL 4,
2026)
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WEB DEVELOPMENT ARTICLE

SEO Meta Tags Complete Guide — Title Tags, Open Graph, JSON-LD Schema, Robots, and Canonical URLs

SEO Meta Tags Complete Guide This guide covers every major meta tag type...

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SEO Meta Tags Complete Guide — Title Tags, Open Graph, JSON-LD Schema, Robots, and Canonical URLs

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SEO Meta Tags

SEO Meta Tags Complete Guide This guide covers every major meta tag type with the exact formulas, thresholds, and examples needed to implement them correctly without guesswork. Last updated: June 2026 🔴 The Science Behind Title Tags and Meta Descriptions The <title> tag is the single most important on-page SEO element — it tells both users and search … Read more

How to Minify HTML, CSS, and JavaScript
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JUN 21,
2026
(UPDATED:
JUL 4,
2026)
📂
DEVELOPER TOOLS ARTICLE

How to Minify HTML, CSS, and JavaScript

How to Minify HTML, CSS, and JavaScript Minifying code reduces file size, speeds...

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How to Minify HTML, CSS, and JavaScript

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Minify HTML, CSS, and JavaScript

How to Minify HTML, CSS, and JavaScript Minifying code reduces file size, speeds up page load, and directly improves PageSpeed Insights scores. This guide covers how browser-based minification works, why Woody Snippets bypass WordPress caching plugin optimisation, and how to recover your snippet code from Woody export JSON files without touching a command line. Last … Read more

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