Welcome to the Network Ustad toolbox: sixty genuinely useful online tools that run entirely in your browser. There is nothing to install and no account to create, and because every calculation happens on your own device, your text, images and data are never uploaded to a server. The tools are grouped into six families below: SEO and content helpers for writers and marketers, text utilities for cleaning and reshaping words, developer tools for code and data, image and design tools, everyday calculators, and converters for files and units. Pick any tool to open its page, where you will find the working tool together with a complete guide, tips and answers to common questions.
SEO & Content Tools
Word CounterCount words, characters, sentences and reading time in any textFree
Character CounterCount characters with spaces, without spaces and letters onlyFree
Keyword Density CheckerMeasure how often keywords and phrases appear in your contentFree
Meta Tag GeneratorCreate ready-to-paste HTML meta tags for any web pageFree
Meta Title & Description Length CheckerCheck title and description lengths with a live SERP previewFree
Slug GeneratorTurn page titles into clean, SEO-friendly URL slugsFree
Robots.txt GeneratorBuild a valid robots.txt file with crawler rules and sitemapFree
Schema Markup GeneratorCreate valid JSON-LD structured data for rich search resultsFree
UTM URL BuilderCreate correctly formatted UTM campaign tracking linksFree
Readability CheckerScore your writing with Flesch reading ease and grade levelsFree
Character CounterCount characters with spaces, without spaces and letters onlyFree
Keyword Density CheckerMeasure how often keywords and phrases appear in your contentFree
Meta Tag GeneratorCreate ready-to-paste HTML meta tags for any web pageFree
Meta Title & Description Length CheckerCheck title and description lengths with a live SERP previewFree
Slug GeneratorTurn page titles into clean, SEO-friendly URL slugsFree
Robots.txt GeneratorBuild a valid robots.txt file with crawler rules and sitemapFree
Schema Markup GeneratorCreate valid JSON-LD structured data for rich search resultsFree
UTM URL BuilderCreate correctly formatted UTM campaign tracking linksFree
Readability CheckerScore your writing with Flesch reading ease and grade levelsFree
Text Tools
Case ConverterSwitch text between uppercase, lowercase, title case and moreFree
Remove Duplicate LinesDelete repeated lines from lists and text while keeping orderFree
Sort Text Lines A–ZArrange lines of text alphabetically, numerically or randomlyFree
Find and Replace ToolReplace words and phrases across a whole document at onceFree
Reverse Text ToolFlip text backwards by character, word or line orderFree
Remove Extra SpacesStrip double spaces, stray tabs and messy blank lines from textFree
Word Frequency CounterCount how often every word appears in a text, with percentagesFree
Lorem Ipsum GeneratorGenerate classic placeholder text by paragraph, sentence or wordFree
Text to Binary ConverterTranslate plain text into 8-bit binary code, character by characterFree
Binary to Text ConverterDecode 8-bit binary code back into readable textFree
Remove Duplicate LinesDelete repeated lines from lists and text while keeping orderFree
Sort Text Lines A–ZArrange lines of text alphabetically, numerically or randomlyFree
Find and Replace ToolReplace words and phrases across a whole document at onceFree
Reverse Text ToolFlip text backwards by character, word or line orderFree
Remove Extra SpacesStrip double spaces, stray tabs and messy blank lines from textFree
Word Frequency CounterCount how often every word appears in a text, with percentagesFree
Lorem Ipsum GeneratorGenerate classic placeholder text by paragraph, sentence or wordFree
Text to Binary ConverterTranslate plain text into 8-bit binary code, character by characterFree
Binary to Text ConverterDecode 8-bit binary code back into readable textFree
Developer Tools
JSON Formatter & ValidatorBeautify, validate and minify JSON with precise error locationsFree
Base64 Encoder / DecoderEncode text to Base64 or decode Base64 strings back to textFree
URL Encoder / DecoderPercent-encode URLs safely or decode encoded links back to textFree
HTML Encoder / DecoderConvert special characters to HTML entities and back againFree
CSS MinifierCompress CSS by removing comments and whitespace safelyFree
JavaScript MinifierCompress JavaScript by removing comments and extra whitespaceFree
HTML MinifierCompress HTML by collapsing whitespace and removing commentsFree
UUID GeneratorCreate random version 4 UUIDs singly or in bulk batchesFree
Unix Timestamp ConverterConvert epoch timestamps to dates and dates back to timestampsFree
JWT DecoderInspect a JSON Web Token’s header, claims and expiry dateFree
Base64 Encoder / DecoderEncode text to Base64 or decode Base64 strings back to textFree
URL Encoder / DecoderPercent-encode URLs safely or decode encoded links back to textFree
HTML Encoder / DecoderConvert special characters to HTML entities and back againFree
CSS MinifierCompress CSS by removing comments and whitespace safelyFree
JavaScript MinifierCompress JavaScript by removing comments and extra whitespaceFree
HTML MinifierCompress HTML by collapsing whitespace and removing commentsFree
UUID GeneratorCreate random version 4 UUIDs singly or in bulk batchesFree
Unix Timestamp ConverterConvert epoch timestamps to dates and dates back to timestampsFree
JWT DecoderInspect a JSON Web Token’s header, claims and expiry dateFree
Image & Design Tools
Image CompressorShrink JPG and PNG file sizes while keeping images looking sharpFree
Image ResizerResize images to exact pixel dimensions with aspect lock and presetsFree
PNG to JPG ConverterConvert PNG images to compact JPG files with quality controlFree
JPG to PNG ConverterConvert JPG photos into lossless PNG files for editing and designFree
Image to Base64 ConverterTurn image files into Base64 data URIs for CSS, HTML and JSONFree
QR Code GeneratorCreate QR codes for links, text and Wi-Fi details, ready to printFree
Favicon GeneratorCreate a favicon from letters or a logo, with install code includedFree
CSS Gradient GeneratorDesign linear and radial CSS gradients and copy the codeFree
CSS Box Shadow GeneratorDesign soft, realistic CSS box shadows with sliders and presetsFree
Hex / RGB Color ConverterConvert colours between HEX, RGB and HSL with a visual pickerFree
Image ResizerResize images to exact pixel dimensions with aspect lock and presetsFree
PNG to JPG ConverterConvert PNG images to compact JPG files with quality controlFree
JPG to PNG ConverterConvert JPG photos into lossless PNG files for editing and designFree
Image to Base64 ConverterTurn image files into Base64 data URIs for CSS, HTML and JSONFree
QR Code GeneratorCreate QR codes for links, text and Wi-Fi details, ready to printFree
Favicon GeneratorCreate a favicon from letters or a logo, with install code includedFree
CSS Gradient GeneratorDesign linear and radial CSS gradients and copy the codeFree
CSS Box Shadow GeneratorDesign soft, realistic CSS box shadows with sliders and presetsFree
Hex / RGB Color ConverterConvert colours between HEX, RGB and HSL with a visual pickerFree
Calculators
Age CalculatorWork out an exact age in years, months, days and total days livedFree
Percentage CalculatorWork out percentages, percentage change and discounts in one placeFree
EMI CalculatorCalculate monthly loan payments with total interest breakdownFree
BMI CalculatorCalculate Body Mass Index and see the healthy range for your heightFree
Date Difference CalculatorCount the days, weeks and months between any two datesFree
Tip CalculatorCalculate restaurant tips and split bills evenly between peopleFree
Random Number GeneratorGenerate random numbers in any range, with or without duplicatesFree
Strong Password GeneratorCreate strong random passwords with length and symbol optionsFree
Online StopwatchTime anything precisely with lap and split recordingFree
Countdown TimerCount down any duration with a clear end-of-time alarmFree
Percentage CalculatorWork out percentages, percentage change and discounts in one placeFree
EMI CalculatorCalculate monthly loan payments with total interest breakdownFree
BMI CalculatorCalculate Body Mass Index and see the healthy range for your heightFree
Date Difference CalculatorCount the days, weeks and months between any two datesFree
Tip CalculatorCalculate restaurant tips and split bills evenly between peopleFree
Random Number GeneratorGenerate random numbers in any range, with or without duplicatesFree
Strong Password GeneratorCreate strong random passwords with length and symbol optionsFree
Online StopwatchTime anything precisely with lap and split recordingFree
Countdown TimerCount down any duration with a clear end-of-time alarmFree
Converters & Utilities
CSV to JSON ConverterTurn CSV spreadsheet data into a clean JSON array of objectsFree
JSON to CSV ConverterTurn a JSON array into a clean CSV file for spreadsheetsFree
XML FormatterBeautify and validate XML with clean, consistent indentationFree
Markdown Editor & PreviewWrite Markdown with a live rendered preview side by sideFree
Unit ConverterConvert length, weight, temperature, volume, area, speed and dataFree
Text to SpeechHave any text read aloud with voice, speed and pitch controlsFree
Typing Speed TestMeasure your typing speed in WPM with an accuracy scoreFree
YouTube Thumbnail DownloaderDownload a YouTube video’s thumbnail in HD, SD and small sizesFree
Browser Info ToolSee your browser version, operating system, screen and settingsFree
Screen Resolution CheckerDisplay your screen resolution, viewport and pixel ratio liveFree
JSON to CSV ConverterTurn a JSON array into a clean CSV file for spreadsheetsFree
XML FormatterBeautify and validate XML with clean, consistent indentationFree
Markdown Editor & PreviewWrite Markdown with a live rendered preview side by sideFree
Unit ConverterConvert length, weight, temperature, volume, area, speed and dataFree
Text to SpeechHave any text read aloud with voice, speed and pitch controlsFree
Typing Speed TestMeasure your typing speed in WPM with an accuracy scoreFree
YouTube Thumbnail DownloaderDownload a YouTube video’s thumbnail in HD, SD and small sizesFree
Browser Info ToolSee your browser version, operating system, screen and settingsFree
Screen Resolution CheckerDisplay your screen resolution, viewport and pixel ratio liveFree
Why These Tools Are Different
Most tool sites send everything you paste to their servers. Ours do the work locally with JavaScript, which makes them faster (no waiting for uploads) and private by design: drafts, customer lists, API payloads and personal photos never leave your device. Each tool page also carries a proper written guide, so you can learn what the numbers mean instead of just copying a result. If a tool saves you time, bookmark it; the collection grows and every tool stays free.