Web Tools & Calculators
Fast, private, client-side browser utilities. Every calculator, converter, and formatter processes data in memory without server storage.
Writing Tools
Transform, format, and prepare clean text, markdown, and comparisons for publishing.
Case & Slug Converter
Reactive textarea that instantly converts text into UPPERCASE, lowercase, Title Case, Sentence case, camelCase, kebab case, and URL slug.
Word & Reading Time Calculator
Real time text analytics calculating word count, characters (with and without spaces), sentences, paragraphs, estimated reading time, and speaking time.
Line Sorter & Deduplicator
Alphabetize lists A to Z or Z to A, remove duplicate rows, strip empty whitespace lines, reverse ordering, and clean multi line datasets client side.
Markdown to Clean HTML & Rich Text Previewer
Split pane real time Markdown editor with live rendered HTML preview, clean HTML output, copy actions, and .md / .html file downloads.
Text Diff & Comparison Checker
Compare two text blocks side by side or unified with color coded additions, deletions, line counts, and inline character differences.
Clean Text Purifier & Whitespace Stripper
Clean and sanitize raw pasted text by removing excess line breaks, stripping multi spaces, converting smart curly quotes, and removing accidental emoji artifacts.
Find & Replace with Regex Engine
Perform advanced batch find and replace across multi line text with case sensitivity, whole word boundaries, and full regular expression capture groups.
Headline Capitalization Analyzer
Format and analyze title casing across AP Style, Chicago Manual of Style, APA, and MLA style guides with an interactive breakdown of capitalized and lowercased words.
Lorem Ipsum & Dummy Content Engine
Generate customizable Latin and modern placeholder dummy text by paragraphs, sentences, words, or clean HTML unordered lists with word and character metrics.
Online Review, Testimonial & Definition Editor
Draft, polish, trim, and format customer reviews, product testimonials, and glossary definitions locally in your browser with live character targets.
Image Edit Tools
Fast, client side canvas-powered image optimization without server uploads.
Image Resizer & Compressor
Client side HTML5 canvas image resizer and compressor. Adjust dimensions with aspect ratio lock and optimize file size without server uploads.
Image Format Converter (PNG, JPG, WebP)
Convert images client side between PNG, JPEG, WebP, and BMP using hardware accelerated HTML5 Canvas with adjustable compression quality.
Image Color Palette Extractor
Extract dominant color clusters and HEX/RGB swatches from any photo or graphic client side via HTML5 canvas pixel sampling and median cut quantization.
Aspect Ratio Cropper & Dimension Presets
Crop photos and graphics client side to standard aspect ratios (1:1 Square, 16:9 Landscape, 9:16 Story/Reel, 4:5 Portrait) with interactive HTML5 canvas handles.
Watermark & Logo Stamper
Stamp customizable text or logo watermarks onto images client side with position controls, opacity adjustments, and high resolution export.
Canvas Image Filter & Tone Adjuster
Adjust image brightness, contrast, grayscale, invert, sepia, and blur client side via hardware accelerated HTML5 canvas filters with instant high res download.
Exif Metadata & GPS Tag Stripper
Cleanly strip hidden EXIF metadata, GPS geotags, camera serial numbers, and timestamp headers from photos before publishing online.
Image to Base64 Data URI Converter
Encode PNG, JPG, WebP, and SVG images into RFC 2397 Base64 Data URI strings for inline CSS backgrounds, HTML <img> embedding, and zero HTTP request asset bundling.
SVG Code Optimizer & Minifier
Clean and minify raw SVG vector code by stripping XML comments, editor metadata (Inkscape/Illustrator namespaces), unnecessary whitespace, and redundant empty tags with live visual rendering.
Marketing Tools
Campaign tracking, GA4 URL construction, inbox previewers, and WhatsApp link generators.
Campaign UTM Link Builder
Construct validated Google Analytics 4 tracking links with source, medium, campaign parameters, and instant high resolution QR codes.
Social Media Character Limit Checker
Real time multi platform character limit gauges and visual warnings for X (Twitter), LinkedIn, Instagram, and TikTok captions with hashtag analytics.
Open Graph & Twitter Card Tag Generator
Generate verified Open Graph and Twitter Card HTML meta tags with live visual desktop feed card mockups for LinkedIn, Facebook, and X (Twitter).
Email Subject Line & Inbox Preheader Previewer
Preview how email subject lines and preheaders look on mobile and desktop Gmail and Apple Mail inbox viewports before sending.
WhatsApp Click to Chat Link & QR Generator
Create sanitized wa.me click to chat links with custom pre filled messages and scannable QR codes for marketing campaigns and direct customer support.
Review Request QR Code Builder
Generate high converting print ready "Scan to Review" QR code badges with custom call to action frames for Google, Yelp, and Trustpilot customer feedback.
Net Promoter Score (NPS) Calculator
Calculate customer loyalty and Net Promoter Score (minus 100 to +100) from Promoters, Passives, and Detractors with industry benchmark ratings.
Mailto: HTML Link & Body Generator
Construct RFC 6068 compliant mailto: links with pre filled Recipient, CC, BCC, Subject Line, and multi line body copy with one click HTML anchor generation and testing.
A/B Split Test Statistical Significance Calculator
Calculate two tailed Z score, p value, relative conversion lift, and statistical confidence intervals (90%, 95%, 99%) between Control (Variant A) and Test (Variant B).
Marketing Reach & Frequency Calculator
Calculate unique audience reach, average ad frequency, total impressions, and CPM cost per thousand reached locally in your browser.
Advertising Tools
Calculate campaign profitability, break even thresholds, CAC payback, and ad funnels.
ROAS & Ad Break Even Calculator
Calculate Return on Ad Spend (ROAS), net profit after advertising, and the exact break even ROAS percentage required based on your product margin.
CPC, CPM & CPA Advertising Matrix
Dynamic 3 mode advertising solver: calculate Cost Per Click (CPC) & CTR, Cost Per Thousand Impressions (CPM), or Cost Per Acquisition (CPA) with step by step formula breakdowns.
LTV & CAC Ratio Benchmarker
Calculate Customer Lifetime Value (LTV), LTV:CAC Ratio, and benchmark unit economics health (Poor, Sustainable, or Highly Scalable) for subscription and ecommerce businesses.
Customer Acquisition Cost & Payback Period Calculator
Calculate blended CAC, customer payback period in months, and evaluate acquisition efficiency against SaaS and eCommerce benchmarks.
CTR & CVR Ad Funnel Calculator
Analyze click through rates (CTR) and conversion rates (CVR) across marketing funnels with interactive stage drop off visualizations.
Lead to Close Funnel & Conversion Estimator
Model sales conversion stages from website visitors to marketing leads, sales qualified leads (SQL), and closed customer deals with revenue forecasting.
Video Ad VTR & Completion Rate Calculator
Calculate View Through Rate (VTR) and quartile audience retention across 25%, 50%, 75%, and 100% video ad impressions.
Ad Budget & Reach Forecaster
Forecast total gross ad impressions, unique audience reach, and cost per unique user based on planned ad spend, estimated target CPM, and desired exposure frequency.
Video Ad View Through Rate & Drop Off Analyzer
Analyze audience retention drop offs between 3 Second Hooks, 50% Midpoints, and 100% Completions with step by step decay bar charts and creative health indicators.
Reach & Frequency Calculator
Calculate unique audience reach, average exposure frequency, Gross Rating Points (GRPs), and audience penetration percentage for digital and broadcast advertising flights.
Multi Channel Media Budget Allocator
Plan and distribute digital advertising budgets across Search, Social, Programmatic, Video, Audio, and DOOH with dynamic share sliders and blended CPM outputs.
3 Way Ad Rate Card Reverse Calculator
Reverse engineer advertising rate cards: solve for Budget, Impressions/Clicks/Views, or Unit Cost across CPM, CPC, and CPV ad buying models.
Share of Voice (SOV) & ESOV Growth Calculator
Calculate Share of Voice (SOV) and Excess Share of Voice (ESOV) to evaluate brand market share momentum and empirical growth trajectory.
SEO Tools
Google SERP snippet visualization, pixel width limits, XML sitemaps, and hreflang builders.
Google SERP & Pixel Snippet Simulator
Enforces 60 character title and 160 character description limits with visual pixel width gauge bars. Simulates exact Google desktop and mobile SERP cards.
Robots.txt Builder & Syntax Validator
Construct and validate clean robots.txt directives for Googlebot, Bingbot, and AI crawlers with path rules, sitemap declarations, and direct file download.
Schema.org Structured Data Generator
Generate valid JSON LD structured data for FAQPage, Article, Organization, and LocalBusiness schemas to earn Google rich snippet badges.
XML Sitemap Entry & File Generator
Generate syntax validated RFC XML sitemap markup (<urlset>) with priority weighting, change frequencies, and one click .xml file downloads.
Canonical URL & Hreflang Tag Builder
Generate multi regional SEO hreflang and canonical link tags to prevent duplicate content penalties and configure international site routing.
Keyword Density & N Gram Frequency Analyzer
Analyze article copy to extract single words, 2 word phrases, and 3 word n grams with percentage density and keyword stuffing threshold warnings.
Meta Tag Inspector & Extractor
Paste any webpage HTML <head> code to automatically parse, audit, and extract Title, Meta Description, Canonical, Robots, and Open Graph tags.
Disavow File Syntax Formatter
Convert raw lists of toxic backlink URLs into Google Search Console compliant disavow text files with automated domain: prefixing, duplicate pruning, and .txt export.
AI Productivity Tools
Structured enterprise prompt engineering, role framing, sensitive data scrubbing, and Midjourney formatting.
System Prompt & Structured Role Builder
Assemble enterprise grade system prompts for ChatGPT, Claude, and Gemini using structured persona framing, task objectives, constraints, and output specifications.
AI Token Counter & LLM Cost Estimator
Estimate token counts from raw prompt text and compare real time API invocation costs across OpenAI GPT 4o, Anthropic Claude 3.5, and Google Gemini.
Few Shot Prompt Example Formatter
Construct structured input/output example pairs for few shot prompt engineering and LLM system prompt formatting with instant copyable scaffolds.
Prompt Obfuscator & Sensitive Data Scrubber
Scrub emails, phone numbers, IP addresses, credit cards, and personal names from prompts before sending to cloud LLMs with client side regex tokenization.
Midjourney & Image AI Prompt Formatter
Build structured, weighted Midjourney prompts with style archetypes, lighting, camera angles, aspect ratio flags (ar flag), and engine versions (v flag).
Prompt to JSON Schema Builder
Construct validated JSON Schema objects for OpenAI, Anthropic, and Gemini Structured Outputs (`response_format`) with dynamic field definitions and type validation.
AI Temperature & Top_P Parameter Explainer
Interactive visual guide and calculator demonstrating how Temperature and Top_P (Nucleus Sampling) affect LLM creativity, determinism, and token distribution.
Prompt Variable Templater & Replacer
Turn reusable prompt templates into interactive form interfaces: automatically detects {variables} or [tags] and renders real time input fields with live assembly.
AI Output Diff & Consistency Checker
Compare two AI model completions or prompt versions side by side with color coded diff highlighting, token variance statistics, and lexical similarity scores.
Career Tools
Salary-to-hourly calculations, resume bullet optimization, notice periods, and STAR interview prep.
Salary to Hourly & Pay Period Converter
Convert annual gross salary into hourly rate, daily rate, weekly wage, biweekly paycheck, and monthly take home estimates based on custom weekly hours.
Google XYZ Resume Bullet Formatter
Transform passive work responsibilities into high impact executive resume bullet points using the Google XYZ formula: Accomplished [X], Measured by [Y], by doing [Z].
Notice Period & Final Working Day Calculator
Calculate your exact final employment date, calendar days countdown, and remaining business working days from your resignation date with weekend exclusion.
Modular Executive Cover Letter Builder
Compose tailored 3 paragraph executive cover letters highlighting key achievements, company alignment, and value propositions with one click export.
Interview STAR Method Planner & Practice Timer
Structure behavioral interview answers using the Situation, Task, Action, and Result framework with an integrated 2 minute mock practice timer.
Freelance vs. Full Time Tax & Income Gap Analyzer
Calculate real take home income parity between a full time salaried job and independent contractor rates, factoring in self employment taxes, health insurance, and unpaid time off.
Professional 3 Tier Bio Generator
Generate polished professional bios in 3 standard lengths: 1 sentence elevator pitch, 50 word social profile bio, and 150 word executive keynote speaker bio.
Reference List Formatter
Build polished, typography standardized professional reference sheets with candidate headers, supervisor/peer relationship tags, and one click plain text copy.
Notice Period & Exit Date Planner
Calculate your exact final working day and transition timeline based on resignation date, notice period (Weeks, Calendar Days, or Working Days), and public holidays.
Real Estate Tools
Mortgage amortization, rental yield, cap rates, rent vs buy analysis, and commission splits.
Mortgage Payment & Loan Estimator
Calculate fixed monthly principal & interest payments, total lifetime financing interest, and overall loan payoff cost using standard amortization formulas.
Rental Yield & Investment ROI Calculator
Calculate Gross Rental Yield, Net Rental Yield, and net annual cash flow factoring in property purchase price, monthly rent, vacancy rates, and recurring expenses.
Cap Rate (Capitalization Rate) Calculator
Calculate Net Operating Income (NOI) and property Capitalization Rate (Cap Rate) with commercial real estate risk benchmark evaluations.
Rent vs. Buy Home Comparison Calculator
Compare the 5 year and 10 year net financial impact of renting versus buying a home, factoring in mortgage interest, property taxes, appreciation, and investment opportunity cost.
Real Estate Commission & Broker Split Calculator
Calculate total property sales commissions, listing vs. buyer brokerage splits, and agent net payout after broker splits and desk fees.
70% Rule Fix and Flip Calculator
Calculate the Maximum Allowable Offer (MAO) for real estate fix and flip investments using the industry standard 70% rule formula.
Square Footage & Area Converter
Convert real estate property dimensions and land area measurements across Square Feet, Square Meters, Square Yards, Acres, and Hectares.
Cash on Cash Return Calculator
Calculate Cash on Cash (CoC) return percentage on rental real estate investments by comparing annual pre tax cash flow to total out of pocket cash invested.
Down Payment & Loan to Value (LTV) Gauge
Calculate mortgage Loan to Value (LTV %) ratio, required loan financing amount, and automated Private Mortgage Insurance (PMI) requirement threshold warnings.
Business Tools
Gross profit margins, markup multipliers, payment gateway fees, compound interest, and startup runway.
Gross Margin, Markup & Profit Calculator
Calculate gross profit, margin percentage, and markup percentage from item cost and selling price. Solve in reverse: enter cost and desired margin to get target price.
Break Even Sales & Unit Volume Calculator
Determine the exact unit sales volume and revenue needed to cover fixed and variable costs with contribution margin and safety margin analysis.
Payment Gateway Fee & Net Payout Calculator
Calculate processing fees and net payouts for Stripe, PayPal, and Square, plus reverse calculate the exact invoice amount needed to receive full target payouts.
Compound Interest & Wealth Growth Projector
Project compound investment growth over time with monthly contributions, annual return rates, compounding frequencies, and an interactive SVG balance growth curve.
Startup Burn Rate & Cash Runway Calculator
Calculate gross and net monthly cash burn, total months of operating runway remaining, and projected zero cash exhaustion dates with health benchmark status badges.
Working Capital & Current Ratio Calculator
Measure corporate liquidity and short term financial health by calculating Net Working Capital, Current Ratio, and Quick Ratio liquidity assessments.
Business Valuation (Earnings Multiple) Estimator
Estimate small business enterprise valuation using Seller's Discretionary Earnings (SDE), EBITDA, or revenue multiples across conservative, median, and aggressive tiers.
SaaS Customer Lifetime Value (LTV) Calculator
Calculate customer lifetime value (LTV), average retention lifespan in months, and LTV:CAC ratio benchmarks from ARPU, gross margin, and monthly churn rate.
Price Elasticity of Demand Calculator
Calculate the Price Elasticity of Demand (PED) coefficient using the midpoint formula, categorizing goods as Elastic, Inelastic, or Unitary with total revenue impact analysis.
Bill Splitter & Tip Rounding Calculator
Split restaurant bills, corporate lunches, and group expenses fairly with customizable tip percentages (10%, 15%, 18%, 20%), headcounts, and round to nearest dollar options.
Developer Tools
JSON linting, Base64 encoding, URL parsing, UUID generation, and Epoch timestamp conversion.
JSON Formatter, Minifier & Syntax Linter
Fast, client side JSON beautifier, minifier, and error linter. Safely formats code with 2 space or 4 space indentation and pinpoints exact syntax error line numbers.
Base64 Text & String Encoder / Decoder
Safely encode and decode UTF8 text and Unicode characters to and from Base64 with instant copy, byte telemetry, and zero server logging.
URL Slug & Query Parameter Parser
Deconstruct any web URL into protocol, host, port, path, and an interactive editable table of query parameters with live re assembly and copy.
UUID & GUID v4 Batch Generator
Generate batches of cryptographically random UUID v4 identifiers client side using browser native crypto.randomUUID() with case and hyphen formatting controls.
Unix Timestamp to Human Date Converter
Convert between Epoch timestamps (seconds or milliseconds) and human readable UTC/Local ISO dates with a live ticking current timestamp counter.
HTML Entity Encoder & Decoder
Convert special characters and reserved symbols into HTML named and numeric entities (e.g. < to <) to prevent XSS vulnerabilities, or decode entities back to plain text.
Regex (Regular Expression) Live Tester
Test, debug, and validate JavaScript regular expressions with real time reactive match highlighting, capture group extraction, and regex syntax error validation.
.htaccess Rewrite Rule & 301 Redirect Generator
Generate copy paste Apache .htaccess 301 redirects, mod_rewrite rules, and Nginx configurations entirely in your browser. 100% free web utility.
CSS Box Shadow & Elevation Generator
Design multi layered CSS box shadows and elevation tiers with interactive horizontal/vertical offset, blur, spread, color, and opacity sliders with instant CSS declaration copy.
JWT (JSON Web Token) Header & Payload Inspector
Safely decode and inspect Base64Url encoded JWT headers and claims payloads client side with syntax highlighting, expiration countdowns, and zero token transmission.
Utilities Tools
Cryptographic random generation, security tools, focus timers, unit conversions, and QR codes.
Cryptographic Secure Password Generator
Cryptographically secure client side entropy generation using browser window.crypto.getRandomValues(). Custom length sliders, character toggles, and live entropy strength meters.
Minimalist Pomodoro & Focus Timer
Clean 25/5/15 minute focus interval timer with browser tab title countdowns, Web Audio API sound chimes, and daily completed session counters.
Percentage Difference & Change Calculator
Solve "What is X% of Y?", "X is what % of Y?", and percentage increase/decrease calculations with reactive formula cards and step by step explanations.
Universal Unit & Measurement Converter
Multi category measurement conversion matrix across Length, Weight, Temperature, and Digital Storage with simultaneous reactive calculation across all units.
QR Code Generator for URLs & Text
Create high resolution scannable QR codes for URLs, contact information, and plain text with color customization, size controls, and instant PNG and SVG vector downloads.
Color Code Converter (HEX, RGB, HSL)
Convert between HEX, RGB, HSL, and CMYK color codes with a live visual swatch, native color picker, and WCAG accessibility contrast scores on black and white.
Age, Date & Calendar Difference Calculator
Calculate the exact elapsed duration between two calendar dates broken down into Years, Months, Weeks, Days, Hours, and Minutes with leap year accuracy.
Stopwatch & Multi Lap Timer
High precision browser stopwatch with millisecond digital display, split lap recording, fastest and slowest lap comparisons, and tab title status synchronization.
Time Zone Meeting Planner & Overlap Finder
Coordinate global team meetings and client calls across multiple time zones with an interactive 24 hour visual slider highlighting overlapping standard business hours (9 AM to 5 PM).
Ecommerce Tools
Amazon FBA, Etsy, and eBay profit calculators, fee breakdowns, and listing byte validators.
Amazon FBA Fee & Profit Margin Calculator
Estimate Amazon referral fees by category, FBA fulfillment fees by size tier, monthly storage, true net profit margin, and exact break even selling price locally.
Etsy Fee & Profit Margin Calculator
Break down Etsy $0.20 listing fees, 6.5% transaction fees across item plus buyer shipping, 3% + $0.25 payment processing, optional Offsite Ads (12%/15%), and net payout.
eBay Final Value Fee & Payout Calculator
Compute exact eBay Final Value Fees across No Store, Starter (13.25% + $0.30), or Basic Store & above (12.35% + $0.30), Promoted Listing ad fees, and true net payout.
Amazon Backend Search Terms & Listing Counter
Audit Amazon Product Titles (200 char limit), validate backend Search Terms strictly against the 249 UTF-8 byte cap with one click sanitization, and track 5x Bullet Points.
Etsy Tag Counter
Validate all 13 Etsy tags in real time with strict 20-character limits, duplicate detection, and one-click bulk export.
eBay Title Counter
Audit eBay 80-character listing titles, preview the 55-character mobile search cutoff, detect duplicate words, and strip promotional filler.
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