Welcome to V2Stack

V2Stack ships one real AI product a week, built live on YouTube, and runs 342 free tools in 8 private suites, plus a Playground that chains them. Everything runs in your browser.

What is V2Stack?

V2Stack is two things. Every week it builds and ships one real AI product, live on YouTube. And it runs free tool suites for images, PDFs, QR codes, barcodes, health, education, email and developers. The tools are private by design: they run in your browser, so your files and text are not uploaded, and you do not need an account.

The Playground joins the suites. Drop a picture or a PDF on its canvas, pick a template or connect tools yourself, press Run, and save what comes out. You can, for example, turn photos into a numbered PDF, pull the text out of a PDF and count its words, or make a QR code and size it for print.

What Tools Are Available?

Live now: 342 tools in 8 suites, plus the Playground

Playground: one canvas that chains tools from every suite, with 20 ready-made templates. Open it at playground.v2stack.com (opens in a new tab).

Image Tools (15 Tools):

• Shrink and convert: Image Compressor, PNG Compressor, WebP Compressor, Image Resizer, Image Converter
• Edit: Image Cropper, Image Rotator, Background Remover, Image Watermark, Add Text to Image, Meme Generator
• Export and inspect: Image to PDF, Image to Base64, Favicon Generator, EXIF Viewer

PDF Tools (15 Tools):

• Merge PDF - Combine multiple PDFs into one
• Split PDF - Extract specific pages or ranges
• Rotate PDF - Rotate pages 90°, 180°, or 270°
• Delete Pages - Remove unwanted pages
• Organize Pages - Reorder pages visually
• Compress PDF - Reduce file size
• Extract Text - Get text content from PDFs
• Password Protect - Encrypt PDFs with password
• Unlock PDF - Remove password protection
• PDF to Images - Convert pages to PNG images
• Images to PDF - Convert images to PDF
• Watermark PDF - Add text watermarks
• Fill Forms - Fill interactive PDF forms
• Page Numbers - Add page numbers
• Sign PDF - Add visual signatures

QR Code Tools (15 Tools):

• Make a code: URL, Wi-Fi, vCard, Calendar Event, Email, SMS, Phone Number, WhatsApp, Crypto Payment
• Design: QR Code with Logo, QR Code Styler, QR Code Templates, Batch QR Code Generator
• Read and scan: QR Code Reader, QR Code Scanner

Health Tools (72 Tools):

• Body & Fitness: BMI Calculator, Body Fat Calculator, Ideal Weight Calculator, Waist-to-Hip Ratio, Waist-to-Height Ratio, Body Surface Area, Body Shape Identifier, Lean Body Mass, BMI for Children
• Nutrition & Diet: Calorie Calculator, Macro Calculator, Water Intake Calculator, Protein Intake Calculator, Fiber Intake Calculator, Sugar Intake Calculator, Sodium Intake Calculator, Caffeine Intake Calculator, Alcohol Units Calculator, Smoking Cost Calculator, Recipe Nutrition Calculator, Food Swap Suggester
• Heart & Blood: Target Heart Rate, Max Heart Rate, Blood Pressure Checker, Blood Sugar Checker, A1C to Glucose Converter, Blood Type Compatibility, Rh Factor Genetics, ASCVD Risk Calculator, CHADS₂ Score, Pulse Rate Checker
• Sleep & Recovery: Sleep Cycle Calculator, Circadian Rhythm Calculator, Jet Lag Recovery, Intermittent Fasting Timer
• Mental Health & Breathing: Breathing Exercise Pacer, Mood Tracker, Reaction Time Test, Memory Test
• Vision & Sensory: Hearing Test
• Pregnancy & Baby: Pregnancy Due Date, Gestational Age Calculator, Ovulation Calculator, Conception Date Calculator, Ovulation Calendar, Pregnancy Week by Week, Trimester Visual Guide, Contraction Timer, Baby Feeding Timer, Baby Sleep Schedule, Breastfeeding Guide
• Exercise & Sports: One Rep Max, Running Pace Calculator, Marathon Predictor, VO2 Max Estimator, HIIT Timer, Stretching Guide, Yoga Pose Guide
• Medical Reference: First Aid Guide, Burn Surface Area, APGAR Score, Glasgow Coma Scale, Pain Scale, Adult Growth Chart, Temperature Converter, GFR Estimator, Medication Reminder, Habit Tracker, Steps to Calories, Calorie Counter, Meal Prep Planner, Fasting Schedule Planner
• QR Code Templates - Pre-designed QR code templates

Education Tools (84 Tools):

• Math & Algebra: Advanced Equation Solver, Scientific Calculator, Fraction Calculator, Quadratic Equation Solver, LCM & GCF Calculator, Ratio Calculator, Statistics Calculator, Exponent & Radical Calculator, Matrix Calculator, Linear Equation Solver, Polynomial Calculator, Percentage Calculator, Random Number Generator, Trigonometry Calculator, Interactive Graphing Calculator, Basic Calculator, Logarithm Calculator, Standard Deviation Calculator, Integral Calculator
• Study & Planning: GPA Calculator, Grade Calculator, Flashcard Maker, Pomodoro Timer, Reading Time Calculator, Typing Speed Tester, Study Planner, Mind Map Creator, Note Taking Templates, Goal Tracker, Exam Countdown, Quiz Maker, Time Elapsed Calculator, Calendar Maker, Venn Diagram Maker, Resume Builder
• Geometry & Measurement: Slope Calculator, Pythagorean Theorem Calculator, Circle Calculator, Triangle Calculator, Volume Calculator, Area Calculator, Graph Paper Generator, Protractor Tool, Visual Ruler, Number Line
• Computer Science: Binary Converter, JSON Formatter, Regex Tester
• Science: Scientific Unit Converter, Periodic Table, Chemical Equation Balancer, Molar Mass Calculator, Physics Formula Calculator, Ohm's Law Calculator, Dimensional Analysis Tool, Significant Figures Calculator, pH Calculator, Periodic Trends Visualizer, DNA/RNA Transcription, Punnett Square
• Writing & Language: Citation Generator, Bibliography Maker, Essay Formatter, Word Counter & Analyzer, Repetition & Cliché Checker, Thesaurus & Synonym Finder, Anagram Solver, Palindrome Checker, Text Case Converter, Paragraph Generator, Sentence Parser, Passage Quiz Maker, Grammar Checker, Paraphrasing Tool, Spelling Checker, Vocabulary Builder, Essay Outline Generator, Dictionary, Character Counter
• Reference & Arts: Color Theory Tool, Music Theory Tool, Geography Quiz, History Timeline, Constitution Reference

Email Tools (24 Tools):

• Addresses: Email Validator, Email Address Extractor, Email List Cleaner, Bulk Email Formatter
• Write: Email Template Builder, HTML Email Generator, Markdown to Email, Email Signature Generator, Email Multipart Creator
• Convert: Email CSS Inliner, Email to Plain Text, Email to Markdown
• Check before sending: Email Preview Tool, Email Link Auditor, Email Size Checker
• Authenticate your domain: SPF Record Generator, DKIM Record Generator, DMARC Record Generator
• Read a message: Email Header Analyzer, MIME Decoder, Email Thread Visualizer, Unsubscribe Header Checker
• Encode and decode: Quoted-Printable Encoder, Base64 Encoder and Decoder

Barcode Tools (11 Tools):

• Create: Barcode Generator, Barcode to Image, Bulk Barcode Generator, Barcode Format Comparison, Barcode Size Calculator
• Check: Barcode Validator, Check Digit Calculator
• Read and decode: Barcode Reader, Barcode Info Decoder, GS1 Element String Parser
• Convert: Barcode Format Converter

Developer Tools (106 Tools):

• JSON: JSON Formatter, JSON Minifier, JSON Validator, JSON Diff, JSON Merge, JSONPath Tester, JSON Schema Generator, JSON to TypeScript, JSON to GraphQL
• Convert formats: JSON to YAML, YAML to JSON, JSON to XML, XML to JSON, JSON to CSV, CSV to JSON, JSON to TOML, TOML to JSON, JSON to INI, INI to JSON, JSON to Properties, Properties to JSON, CSV to XML, XML to CSV, CSV to Markdown Table, Markdown Table to CSV, CSV to SQL, Markdown to HTML, HTML to Markdown, XML to XSD
• Format and validate: YAML Formatter, YAML Validator, XML Formatter, XML Minifier, XML Validator, HTML Formatter, HTML Minifier, HTML Validator, CSS Formatter, CSS Minifier, CSS Validator, JavaScript Formatter, JavaScript Minifier, JavaScript Syntax Checker, SQL Formatter, SQL Minifier, SQL Syntax Checker, CSV Validator
• Encode and decode: URL Encoder and Decoder, HTML Entities Encoder and Decoder, Unicode Escape and Unescape, Text to Binary, Hex and Decimal, Morse Code Translator, Braille Translator, Classic Ciphers, Roman Numeral Converter, Number Base Converter, Base64 Encoder and Decoder, Image to Base64, Base64 to Image
• Security: HMAC Generator, UUID Generator, Password Generator, Password Strength Checker, JWT Decoder, Hash Generator
• Text: Text Case Converter, Word and Character Counter, Text Statistics, Line Sorter, Remove Duplicate Lines, Find and Replace, Pad Text, Word Wrap, Text Truncator, Text Repeater, Reverse Text, Text Extractor, Lorem Ipsum Generator, Fake Data Generator, Text Diff, Regex Tester, Regex Pattern Library
• Dates and time: Timestamp Converter, Age Calculator, Date Add and Subtract, Date Difference Calculator, Cron Expression Parser
• Network: URL Parser, URL Builder, User Agent Parser, Subnet Calculator, IP Address Converter, IP Address Analyzer, DNS Lookup
• CSS and web: Color Converter, Color Palette Generator, CSS Gradient Generator, CSS Box Shadow Generator, CSS Border Radius Generator, Meta Tag Generator, Open Graph and Twitter Card Generator, HTML Table Generator
• Numbers: Fibonacci Generator, Prime Number Checker, Percentage Calculator, Random Number Generator

Coming Soon:

• Document Tools - Word, Excel, PowerPoint tools

Why use V2Stack?

1. Free
No credit card, no hidden fees, no watermarks.

2. Private
Every tool runs in your browser. Files and text never leave your device.

3. No account
Start straight away. No signup, no login.

4. Tools that connect
The Playground chains tools from different suites into one flow, so a job that took five downloads takes one run.

5. Honest about limits
Each tool says what it cannot do. Health and education tools are aids, not professional advice.

Quick Start Guide

Step 1: Choose a tool or a template
Open a suite, such as Image Tools (opens in a new tab), or open the Playground (opens in a new tab) and pick a template.

Step 2: Add your file or text
Drag and drop a file, or click to browse. Most tools accept several formats. Nothing is uploaded.

Step 3: Adjust settings
Set the options and see the effect before you save.

Step 4: Save the result
Click download. The result is saved to your device straight away.

Need Help?

• Browse articles by category
• Search for specific topics
• Contact support for personalized help

Questions about a tool, or an idea for one? Tell us.