Caynetic .app

Apps & tools.

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Browser tools

100 tools

Data & text

CSV Deduplicator

Remove duplicate rows before your next import.

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Data & text

JSON Formatter & Validator

Format, validate and minify JSON.

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Security

Strong Password Generator

Generate a strong password in your browser.

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Design

Color Contrast Checker

Check text and background contrast.

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Marketing

SMS Segment Calculator

Count message segments and character space.

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Finance

VAT Calculator

Add or remove VAT with a rate you choose.

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Security

Password Strength Checker

Check password strength in your browser with local pattern-aware estimates and practical recommendations.

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Marketing

Keyword Density Analyzer

Measure keyword frequency and density in your browser with a practical keyword density analyzer for SEO, editing, and content review.

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Marketing

Meta Tag Preview Analyzer

Preview search and social meta tags in your browser with title, description, URL, and Open Graph length checks before publishing.

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Marketing

Email Subject Line Tester

Test email subject lines and preheaders in your browser with length checks, inbox previews, readability signals, and practical recommendations.

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Marketing

Email Header Analyzer

Analyze pasted email headers in your browser to inspect delivery hops, SPF, DKIM, DMARC, sender details, warnings, and copy-ready diagnostics.

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Marketing

Email Signature Generator

Create clean, copy-ready email signatures in plain text and HTML from your contact details, company, links, and brand color.

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Marketing

vCard Contact Generator

Create copy-ready vCard contact files from names, company details, email, phone, website, address, and notes in your browser.

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Data & text

Base64 Encoder & Decoder

Encode text to Base64 and decode Base64 back to readable UTF-8 text instantly in your browser.

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Development

HTML Entity Encoder & Decoder

Encode text into safe HTML entities or decode HTML entities back to readable text directly in your browser.

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Development

HTML Formatter & Minifier

Format, minify, and inspect HTML in your browser with indentation controls, comment handling, markup counts, and nesting warnings.

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Security

SHA-256 Hash Generator

Generate SHA-256 hashes in your browser, normalize line endings, compare expected hashes, and copy the result instantly.

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Marketing

URL Slug Generator

Convert any title or phrase into a clean, SEO-friendly URL slug in your browser.

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Data & text

Batch Filename Planner

Preview clean, sequential, cross-platform filenames before batch renaming files for uploads, archives, and project folders.

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Development

URL Encoder & Decoder

Encode and decode URL components, full URLs, and query strings in your browser.

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Marketing

UTM Link Builder

Build clean campaign-tracked URLs with UTM parameters in your browser.

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Marketing

WhatsApp Link Generator

Generate clean WhatsApp click-to-chat links with Bahamian phone defaults, optional starter messages, and copy-ready wa.me URLs.

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Marketing

Mailto Link Generator

Build clean mailto links with recipients, cc, bcc, subject lines, message body text, and copy-ready HTML anchors in your browser.

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Marketing

Robots.txt Generator

Generate a clean robots.txt file in your browser with user-agent rules, allow and disallow paths, crawl delay, and sitemap support.

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Development

Cache-Control Header Builder

Build a practical Cache-Control header for static assets, HTML pages, APIs, and private responses with clear browser and CDN caching notes.

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Security

Content Security Policy Header Builder

Build a practical Content Security Policy header with common directives, report-only mode, warnings, and server snippets in your browser.

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Development

DNS Record Formatter & Validator

Format and validate common DNS records into clean zone-file rows with clear errors, warnings, and copy-ready output.

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Development

Redirect Map Validator

Validate website redirect maps in your browser by finding duplicate sources, chains, loops, self-redirects, external targets, and copy-ready normalized rules.

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Data & text

Markdown to HTML Converter

Convert Markdown to clean HTML in your browser.

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Data & text

Markdown Table Formatter

Format CSV, TSV, or pipe-delimited rows into clean Markdown tables in your browser with alignment and copy-ready output.

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Data & text

Markdown Front Matter Checker

Check Markdown front matter locally for required fields, duplicate keys, valid dates, clean slugs, tags, excerpt length, and copy-ready metadata.

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Data & text

JSON Path Finder

Find values inside JSON with dot, bracket, index, and wildcard paths.

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Data & text

JSON Schema Starter Generator

Generate a starter JSON Schema from sample JSON in your browser.

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Marketing

Local Business JSON-LD Generator

Generate copy-ready LocalBusiness JSON-LD structured data from business details, address, links, and opening hours in your browser.

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Development

Regex Tester

Test regular expressions in your browser with flags, live match results, capture groups, and replacement previews.

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Data & text

Text Diff Checker

Compare two blocks of text in your browser and see added, removed, changed, and unchanged lines with a clear copyable diff summary.

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Data & text

Line Sorter & Deduplicator

Sort, trim, and deduplicate plain-text lists in your browser with clear counts and copy-ready output.

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Security

.env Config Auditor

Audit pasted .env files locally for duplicate keys, invalid names, empty values, missing required variables, and generate a scrubbed .env.example.

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Operations

Action Item Extractor

Paste meeting notes to extract action items, owners, due dates, priorities, and a copy-ready follow-up list in your browser.

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Development

Cron Expression Explainer

Explain and validate five-field cron expressions in your browser with practical field-by-field schedule details and warnings.

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Development

Log Timeline Analyzer

Paste application logs to detect timestamps, count severity levels, find timeline gaps, and summarize incidents directly in your browser.

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Development

HAR Request Analyzer

Paste HAR JSON to summarize requests, status codes, slow calls, host traffic, transfer size, and timing bottlenecks in your browser.

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Development

HTTP Status Code Analyzer

Paste HTTP status codes, logs, or response rows to classify outcomes, count errors, flag retryable responses, and build a copy-ready status report.

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Operations

Calendar Invite Generator

Create a copy-ready .ics calendar invite with event times, timezone, location, description, attendees, and reminder settings.

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Operations

Meeting Agenda Builder

Build a timed meeting agenda from objectives, agenda rows, owners, durations, and target meeting length, then copy a clean agenda summary.

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Operations

Time Zone Meeting Planner

Plan meetings from Nassau time across multiple time zones, compare local times, flag outside-hours slots, and copy a clear schedule summary.

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Development

SLA Uptime Calculator

Calculate uptime targets, downtime budgets, actual availability, and remaining SLA downtime for services, websites, and internal systems.

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Design

CSS Clamp Calculator

Generate responsive CSS clamp() values from minimum and maximum sizes, viewport widths, and px or rem output settings.

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Design

CSS Specificity Calculator

Calculate CSS selector specificity, compare selector strength, and spot cascade risks before shipping styles.

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Design

Box Shadow Generator

Generate copy-ready CSS box-shadow values with live preview, presets, opacity control, and clean CSS output.

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Development

Timestamp Converter

Convert Unix timestamps and human-readable date/time values in your browser.

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Data & text

Subtitle Time Shifter

Shift SRT and WebVTT subtitle timings forward or backward in your browser with clamping, format conversion, and copy-ready output.

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Security

JWT Decoder

Decode JWT header and payload instantly in your browser, inspect standard claims, and check token timing fields.

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Development

SemVer Comparator

Compare semantic versions, validate prerelease/build metadata, and see which release has higher SemVer precedence directly in your browser.

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Data & text

CSV to JSON Converter

Convert CSV data to JSON in your browser with configurable delimiter, header handling, and formatted output.

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Data & text

JSON to CSV Converter

Convert JSON arrays and objects to CSV in your browser with flattened fields, delimiter options, and copy-ready output.

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Data & text

CSV Column Profiler

Profile pasted CSV data in your browser with row counts, column types, blank cells, uniqueness, duplicate rows, and numeric stats before import.

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Data & text

CSV Pivot Summarizer

Summarize pasted CSV data in your browser by grouping one column and calculating counts, sums, averages, minimums, or maximums for another.

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Data & text

CSV Join Key Checker

Compare two CSV exports in your browser to check whether selected key columns can be joined safely, with missing and duplicate key reports.

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Security

CSV Privacy Redactor

Redact sensitive CSV columns, email addresses, and phone numbers in your browser before sharing spreadsheet exports or import files.

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Security

Spreadsheet Formula Injection Checker

Check pasted CSV or TSV data for spreadsheet formula-injection cells and create a safer escaped export in your browser.

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Marketing

Email List Cleaner

Clean, validate, and deduplicate pasted email lists in your browser.

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Finance

Weighted Average Calculator

Calculate weighted averages, compare them against a simple average, and normalize uneven weights with a practical browser-based calculator.

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Operations

Proposal Scorecard Calculator

Rank vendor proposals with weighted criteria, normalized scores, tie handling, and a copyable decision summary in your browser.

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Marketing

Net Promoter Score Calculator

Calculate Net Promoter Score from promoter, passive, and detractor counts, then review response mix, target gap, and score band in one practical browser-based tool.

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Marketing

RFM Customer Segmenter

Paste customer purchase data to score recency, frequency, and monetary value, then group customers into practical RFM segments in your browser.

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Marketing

Lead Response Time Calculator

Analyze lead response times, SLA hit rate, slowest follow-ups, and estimated value at risk from pasted lead timestamps in your browser.

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Marketing

A/B Test Calculator

Compare two conversion rates, estimate lift, confidence, z-score, and whether an A/B test result is strong enough to act on.

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Marketing

Churn Rate Calculator

Calculate customer churn, retention, net customer growth, gross MRR churn, and net MRR churn with a practical browser-based churn rate calculator.

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Finance

Loan Payment Calculator

Estimate monthly loan payments, total interest, payoff time, and amortization details with optional extra monthly payments.

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Finance

Compound Interest Calculator

Estimate compound growth with recurring contributions, flexible compounding frequency, and a yearly breakdown you can review instantly in your browser.

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Finance

Depreciation Calculator

Estimate annual depreciation, accumulated depreciation, and ending book value with straight-line, double-declining, or sum-of-years-digits methods.

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Finance

Break-Even Calculator

Calculate break-even units, required revenue, target-profit volume, and contribution margin in your browser with a simple business break-even calculator.

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Operations

Reorder Point Calculator

Calculate lead-time demand, reorder point, stock cover, and suggested reorder quantity with a practical browser-based inventory calculator.

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Operations

Inventory Turnover Calculator

Calculate inventory turnover, days inventory on hand, average inventory, gross profit, and GMROI in your browser with a practical stock efficiency calculator.

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Operations

SKU Generator

Generate clean, copy-ready product SKUs with store prefixes, category codes, product names, variants, locations, and padded sequences.

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Operations

Barcode Check Digit Validator

Validate UPC-A, EAN-8, EAN-13, and GTIN-14 barcode check digits, spot incorrect codes, and generate missing check digits in your browser.

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Finance

Cash Conversion Cycle Calculator

Calculate days inventory outstanding, days sales outstanding, days payable outstanding, cash conversion cycle, and cash tied up in working capital.

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Operations

Service Queue Calculator

Estimate customer wait time, queue utilization, and staffing needs with a practical service queue calculator for small business counters and support teams.

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Operations

Staff Shift Coverage Planner

Paste staff shifts to total labor hours, compare coverage against a target, and flag understaffed or overstaffed time slots in your browser.

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Operations

Equipment Maintenance Planner

Plan equipment service dates and usage intervals, then flag overdue, due-soon, and healthy maintenance status in your browser.

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Operations

Unit Price Comparator

Compare product pack sizes by normalized unit price, rank the best value, and estimate savings before buying or restocking.

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Development

Data Transfer Time Calculator

Estimate upload or download time from file size, connection speed, and network overhead with a practical browser-based data transfer calculator.

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Development

File Size Budget Calculator

Calculate page, app, or campaign asset size budgets with compressed estimates, overage warnings, and a copy-ready size report.

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Development

IPv4 Subnet Calculator

Calculate IPv4 network, broadcast, subnet mask, wildcard mask, host range, and usable addresses from a CIDR block.

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Design

Color Palette Generator

Generate beautiful color palettes from any base color.

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Design

Color Format Converter

Convert HEX, RGB, HSL, and CMYK colors into copy-ready CSS and design formats with a live preview.

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Finance

Markup Calculator

Calculate markup, gross margin, total profit, and target selling price in your browser with a practical markup calculator for pricing decisions.

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Finance

Recipe Cost Calculator

Calculate recipe batch cost, portion cost, waste allowance, and suggested menu price from ingredient rows in your browser.

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Finance

Project Quote Calculator

Build a practical project quote from labor hours, hourly rate, direct costs, overhead, target margin, contingency, and deposit terms.

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Finance

Retainer Capacity Calculator

Plan monthly retainer capacity, client load, revenue, labor cost, and gross margin with a practical calculator for service teams.

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Finance

Unit Economics Calculator

Estimate monthly gross profit, customer lifetime value, LTV:CAC, CAC payback, and year-one cohort contribution with a practical unit economics calculator.

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Finance

Cash Runway Calculator

Estimate monthly burn, cash runway, break-even revenue, and an expected runway end date from your starting cash, revenue, and operating costs.

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Finance

Cash Drawer Reconciliation Calculator

Reconcile a cash drawer from opening float, cash sales, refunds, paid outs, drops, counted cash, and card settlement variance.

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Finance

Meeting Cost Calculator

Estimate the cost of internal meetings from attendee rates, headcount, duration, and meeting frequency with a practical browser-based calculator.

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Finance

Salary Proration Calculator

Prorate salary for a partial pay period using annual salary, pay frequency, workdays paid, and fixed adjustments with a practical salary proration calculator.

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Finance

Invoice Number Generator

Generate clean, sequential invoice numbers with prefixes, dates, client codes, padding, and copy-ready batches.

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Finance

Amount to Words Converter

Convert invoice, receipt, and cheque amounts into clear words with Bahamian dollar defaults and copy-ready output.

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Finance

Invoice Late Fee Calculator

Calculate overdue days, grace periods, flat late fees, and simple interest on unpaid invoices with a practical invoice late fee calculator.

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Finance

Days Sales Outstanding Calculator

Calculate DSO, average daily credit sales, receivables turnover, and cash tied up above your target collection window in your browser.

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