HelpMini
Featured Micro Tools
Ultimate Productivity Tools Directory & Search Index
Explore and search through the complete collection of 100+ free online developer utilities, web tools, converters, and productivity apps. 100% free.
File MIME-Type & Header Inspector
Inspect file MIME types, extensions, magic numbers, and binary headers by dropping files locally in your browser. 100% free and secure.
UUID / GUID Generator
Generate random UUIDs (v4) in bulk instantly online. Copy individual IDs or export lists for database seeding, testing, and development. 100% free.
Image Color Picker & Eyedropper
Upload any image and pick exact colors instantly using an interactive canvas eyedropper. Extract HEX, RGB, and copy color values with 100% client-side privacy.
Markdown to Slides Presentation Mode
Convert Markdown text into a full-screen interactive presentation slide deck instantly online. Supports slide breaks, keyboard navigation, and themes. 100% free.
One-Time Secret Text Sharing Link
Share sensitive text, passwords, or notes securely online with client-side zero-knowledge encryption. The secret self-destructs after being read once. 100% free.
Text-to-Speech (TTS) Reader
Listen to any text read aloud online using browser-native Web Speech Synthesis API. Customize voice selection, speech rate, pitch, and volume. 100% free.
Color Picker & Palette Harmony Generator
Pick colors and generate harmonious color palettes (Complementary, Triadic, Analogous, Monochromatic) with instant HEX, RGB, and HSL conversions. 100% free.
Software Keyboard Shortcuts Cheat Sheet
Quick reference cheat sheet for popular software keyboard shortcuts including VS Code, macOS, Windows, Photoshop, and Excel. 100% free.
Flashcard Creator for Learning & Presentations
Create interactive flashcards for studying, memory retention, and presentations. Flip cards, track progress, and test knowledge online. 100% free.
Decision Matrix & Random Picker Wheel
Make unbiased decisions using a weighted decision matrix or a dynamic random spinner wheel. Interactive canvas wheel animation and score matrix. 100% free.
Pitch Deck / Speech Countdown Timer
A full-screen, highly readable presentation and speech timer with visual warnings (green, yellow, red), stage timekeeping, and pause/reset controls. 100% free.
Name Badge & Desk Sign Print Layout Tool
Create and print professional conference name badges, event ID tags, and desk tent signs. Customize grid layout, dimensions, and names. 100% free.
Certificate of Completion Generator
Generate professional awards and certificates of completion online. Customize recipient names, course titles, dates, and print/export to PDF. 100% free.
Invoice & Receipt Template Print Previewer
Create, calculation-verify, and print professional commercial invoices and receipts online. Automatic subtotal, tax, and total rendering. 100% free.
Printable Meeting Notes & To-Do Template Generator
Generate customizable, clean meeting minutes, agenda layouts, and action item to-do sheets for printing or PDF export. 100% free and private.
Printable Habit Tracker & Grid Generator
Generate customizable monthly habit trackers and grid sheets for printing or digital planning. Export as PDF or high-res images. 100% free.
Mind Map Draw & Export Tool
Create, edit, and visualize interactive mind maps online. Add nodes, customize structures, and export your mind maps to SVG or PNG 100% free.
Mermaid.js Flowchart & Sequence Diagram Live Editor
Create and render Mermaid.js flowcharts, sequence diagrams, and architecture charts in real-time online. Export to SVG or PNG. 100% free.
Temporary Clipboard & Text Notepad
A fast, distraction-free temporary text pad that auto-saves to LocalStorage. Copy, download, or clear your scratchpad notes 100% locally.
Pro AI Video Prompt Generator
Craft cinematic prompts for Sora, Runway Gen-3, Luma Dream Machine, and Kling AI with camera movements, motion speed, and action physics.
Pro AI Photography Prompt Generator
Craft professional Midjourney, Flux, and SDXL prompts with camera gear, lenses, lighting, angles, and film simulation.
Slack & Discord Formatting Previewer
Convert standard Markdown to Slack mrkdwn & Discord markdown instantly. Live preview your messages with Slack and Discord styling, custom emoji support, and zero backend tracking.
Web Camera & Microphone Test Suite
Test your webcam video resolution, frame rate, microphone audio volume meter, and speakers online using WebRTC & Web Audio API. 100% free and private.
Email Subject Line A/B Tester & Spam Trigger Checker
Test and optimize your email subject lines before sending. Detect spam trigger words, preview mobile truncation, compare A/B variants, and improve open rates with 100% client-side privacy.
Screen Recorder & GIF Exporter
Record your screen, app window, or browser tab online without software installations using WebRTC & MediaRecorder API. Export to WebM or MP4. 100% free.
Audio File Converter
Convert audio files between WAV, MP3, and OGG formats online 100% client-side using Web Audio API. Fast, private, and completely free.
Working Hours & Out-of-Office Email Auto-Responder Generator
Generate professional Out-of-Office (OOO) and working hours auto-responder email templates instantly. Perfect for remote teams, vacations, sick leaves, and asynchronous workflows with 100% client-side privacy.
Pro E-Commerce AI Product Scene Prompt Generator
Transform casual product photos into professional commercial studio renders with custom backgrounds, surfaces, lighting, and props for Midjourney and Flux.
Currency Exchange Rate Calculator
Instantly convert currencies with real-time exchange rates. Features a built-in offline cache so you can calculate conversions even without an internet connection. 100% privacy-friendly.
GIF Speed & Frame Extractor
Adjust GIF playback speed (0.25x to 3x) and extract individual GIF animation frames into PNG images online. 100% free and client-side safe.
Pro AI Men's Fashion & Outfit Shoot Prompt Generator
Design commercial prompts for menswear eCommerce! Seamlessly swap outfits via dual-image reference, switch backgrounds, swap models while locking original scenes, and control cameras for Midjourney, Flux, and SDXL.
Global Timezone Overlap Finder & Meeting Scheduler
Find overlap working hours across remote teams in PST, EST, UTC, CET, JST, and worldwide. 100% free and client-side.
AI Couple Fashion & Two-Model Photoshoot Prompt Generator
Create precise AI fashion-shoot prompts for couple outfits and two-model ecommerce photography. Control model pairing, interactions, separate outfits, scenes, cameras, and lighting for Midjourney, Flux, SDXL, and Doubao.
Image Aspect Ratio Calculator
Calculate image dimensions and simplified aspect ratios (16:9, 4:3, 1:1, 9:16) for responsive web design, video formats, and social media media assets. 100% free.
Voice/Audio Transcriber & Note Cleaner
Transcribe voice memos and speech into text in real-time using your browser's native Speech Recognition API. Clean up transcriptions, remove filler words, and format notes with 100% privacy.
Calendar Event Link Generator
Generate instant 'Add to Calendar' links for Google Calendar, Outlook, Office 365, Yahoo, and downloadable .ics files for Apple Calendar. 100% client-side and free.
Pro eCommerce Google SEO & AI Search (GEO) Generator
Create SEO metadata, Product structured data and machine-readable product summaries.
Image Blur & Pixelate Sensitive Area Tool
Blur or pixelate sensitive regions (passwords, faces, phone numbers, addresses) on screenshots and photos online. 100% private and client-side safe.
JSON to TypeScript Interface Converter
Fast, 100% private online tool to convert complex JSON data into structured TypeScript interfaces instantly.
AI Men's Pants Ecommerce Photoshoot Prompt Generator
Generate detailed AI ecommerce photoshoot prompts for men's jeans, cargo pants, trousers, and casual pants. Control fit, fabric, footwear, pose, lens, scene, and lighting for Midjourney, Flux, SDXL, and Doubao.
Pro eCommerce Net Profit & Break-Even ROAS Calculator
Real-time eCommerce net profit calculator for Shopify, Amazon, and DTC stores. Accurately deduct platform fees, Stripe/PayPal transaction rates, shipping, and COGS to calculate net margin, break-even ROAS, and max CPA limit.
Image Resizer by Pixels or Percentage
Resize JPG, PNG, and WebP images online by exact pixel dimensions or percentage scale with aspect ratio locking. 100% free and client-side safe.
SEO Meta Title & Description Generator
Generate CTR-optimized Google Meta Titles and Meta Descriptions instantly with real-time character limit checks.
Remote Team Standup Notes Generator
Generate clean, structured daily standup notes (Yesterday, Today, Blockers) formatted for Slack, Discord, and Markdown instantly. 100% private and client-side.
Pro AI Women's Pants Ecommerce Photoshoot Prompt Generator
Generate detailed AI ecommerce photoshoot prompts for women's wide-leg pants, jeans, trousers, and leggings. Control silhouette, fabric drape, footwear, leg proportions, scene, and lighting for Midjourney, Flux, SDXL, and Doubao.
Asynchronous Meeting Agenda & Presentation Countdown Timer
Full-screen presentation countdown timer with structured meeting agenda tracks. 100% free, client-side, and distraction-free for remote teams.
Image EXIF Metadata Cleaner
Inspect and strip sensitive EXIF metadata (GPS location, camera details, timestamps) from JPEG and PNG photos online. 100% free and client-side safe.
Pomodoro & Ambient Noise Player for Focus
Boost your productivity with a customizable Pomodoro focus timer combined with browser-synthesized ambient noise (Rain, White Noise, Brown Noise). 100% private, free, and works offline.
Prompt Structurer & Refiner
Transform rough, one-line ideas into structured, high-converting prompts using the CO-STAR framework for ChatGPT and Claude.
Pro Social Media Copywriting AI Prompt Generator
Designed for DTC brands and digital creators! Generate high-converting AI prompts for TikTok, Instagram, Facebook, and Email marketing with hooks, emojis, and hashtags.
E-commerce Profit Margin & Markup Calculator
Calculate your true net profit, margin %, markup %, and breakeven sale price for Shopify, Amazon, Etsy, and WooCommerce stores.
Image to WebP Converter
Fast, 100% private online tool to batch convert PNG, JPG, and BMP images to optimized WebP format.
Free Freelance PDF Invoice Generator
Create professional PDF invoices instantly in your browser. 100% client-side privacy, custom logos, tax calculations, and instant PDF download.
Markdown & Text Cleaner
Fast, 100% private, client-side tool to strip HTML tags, normalize line breaks, and clean AI-generated Markdown text.
PDF Watermark Stamp Add
Add custom text watermarks or stamps to all pages of a PDF document online 100% client-side using pdf-lib. Private, fast, and completely free.
Social Media Image Resizer & Cropper
Crop and resize images instantly for Instagram, Twitter/X, LinkedIn, YouTube, and Facebook. Features exact platform dimension presets, drag-and-zoom editing, and 100% client-side privacy.
Batch Image Format Converter
Free, private, browser-based batch image converter for PNG, JPG, and WebP with resizing, quality controls, individual downloads, and ZIP export.
Open Graph (OG) Meta Tag & Social Preview Generator
Fast, 100% private online tool to generate Open Graph and Twitter Card HTML meta tags with live social media previews.
PDF to PNG/JPG Converter
Convert PDF pages into high-resolution PNG or JPG images online 100% client-side using pdf.js. Private, fast, and completely free.
Product Photo Background Color Changer
Instantly change or remove product photo backgrounds for Amazon, Etsy, and Shopify stores. Generate clean pure white background or brand color WebP/PNG images with 100% client-side privacy.
Rent vs. Buy Calculator
Compare renting with buying using the down payment opportunity cost, mortgage interest, housing appreciation, and investment returns over a 30-year projection.
LLM Token & Context Limit Calculator
Calculate exact token counts and estimate API costs across GPT-4o, Claude 3.5, DeepSeek, and Gemini 1.5.
Compound Interest & FIRE Calculator
Project compound growth from an initial balance and monthly contributions, explore an interactive chart, and estimate financial independence using the 4% withdrawal rule.
Freelance Hourly Rate Calculator
Fast, 100% private online calculator to compute your ideal freelance hourly rate based on expenses, taxes, and desired income.
Image to Base64 & DataURI Converter
Fast, 100% private client-side converter. Turn PNG, JPG, WEBP, and SVG images into DataURI, CSS, or HTML Base64 strings.
Images to PDF Converter
Convert PNG, JPG, JPEG, and WebP images into a single PDF document online 100% client-side using pdf-lib. Private, fast, and completely free.
Kids Coding Game: Space Explorer
No installation required! A visual coding game for ages 5–12. Combine move, turn, and repeat blocks to guide a spaceship through asteroids, collect energy crystals, and learn algorithmic thinking.
Number to English Words & Currency Converter
Fast, 100% private online tool to convert numbers and currency amounts into English words for invoices and checks.
Stripe & PayPal Fee Calculator
Calculate transaction fees, net payout income, or inverse ask amounts to pass processing fees to clients.
SVG Icon & Logo Vector Optimizer
Optimize and compress SVG icons and logo files in your browser. Remove useless metadata, minify paths, reduce file size by up to 80%, and copy clean inline SVG code with 100% privacy.
UTM Builder & Tracking URL Generator
Fast, 100% private online tool to create custom UTM tracking links for Google Analytics 4 (GA4) campaigns.
VAT & Sales Tax Calculator
Fast online VAT and Sales Tax calculator to add tax or remove tax (reverse calculation) for UK, EU, and US rates.
AI Watermark Remover & Object Eraser
A free image cleanup tool that runs 100% locally in your browser, with smart repair, clone stamp, touch and pen support, undo/redo, and PNG/JPEG export.
Word & Character Counter with Reading Time Estimator
Free, real-time online tool to count words, characters, sentences, paragraphs, and estimated reading time.
JSON Formatter & Validator
Fast, secure, 100% client-side JSON formatter, validator, and minifier for developers and store owners.
JSON Formatter, Validator & Beautifier
Free, 100% private online tool to format, validate, beautify, and minify your JSON data in real-time.
Kids Coding Game: Robot Pixel Painter
No installation required! A drawing and coding game for ages 6–12. Combine draw, turn, color, and loop blocks to guide a robot artist and learn loops and algorithms.
PDF Page Rotator & Reorder Tool
Rotate and reorder individual or all pages of a PDF document online 100% client-side using pdf-lib. Private, fast, and completely free.
Tip & Bill Splitter Calculator
Fast, 100% private online calculator to compute restaurant tips and split bills evenly among groups.
JSON & YAML Converter
100% client-side JSON and YAML converter and syntax validator.
Kids Coding Game: Magical Music Programmer
No installation required! A music-algorithm coding game for kids. Combine note blocks, rhythm lengths, and loops to code Twinkle, Twinkle, Little Star and your own melodies while building musical and computational thinking.
PDF Splitter & Page Extractor
Split PDF files or extract specific page ranges online 100% client-side using pdf-lib. Completely private, fast, and secure.
Base64 & URL Encoder/Decoder
Fast, 100% private online tool to encode and decode Base64 text and URL parameters.
Text Case & Naming Style Converter
Fast, client-side tool to convert text case (UPPERCASE, lowercase, Title Case) and code variable formats (camelCase, snake_case, kebab-case).
Tower of Hanoi & Sorting Algorithm Visualizer
Explore recursion with an interactive Tower of Hanoi puzzle and visualize bubble, selection, and insertion sorting algorithms step by step in your browser.
Robot Maze Escape
A polished coding maze game for kids with 60 campaign levels, conditions and loops, plus keys and doors, switches, ice, portals, daily challenges, and shareable custom maps.
PDF Merge
Merge multiple PDF files into one single document online 100% client-side using pdf-lib. Private, fast, and completely free.
Etsy & Shopify Product Tag & Keyword Extractor
Extract SEO tags and long-tail keywords from product descriptions and competitor titles. Features strict Etsy 20-character tag checking and one-click Shopify CSV/comma output.
HTTP Status Codes Quick Reference & Search
Quickly search and reference all HTTP status codes (1xx-5xx) with RFC definitions, use cases, and developer code snippets. 100% free and client-side.
Kids Coding Game: Crazy Physics Marbles
No installation required! A physics-logic coding game for kids. Place deflectors, boosters, and portals to change a marble's path, hit every target star, and develop spatial and function-mapping skills.
Logic Circuit Puzzle for Kids
Explore AND, OR, NOT, and other digital logic gates with no installation. Build circuits that light the output lamp while developing conditional reasoning and hardware-programming skills.
CIDR & IP Subnet Calculator
Calculate IPv4 CIDR blocks, subnet masks, wildcard masks, network and broadcast addresses, and usable IP address ranges online. 100% free.
Kids Coding Game: Interstellar Cargo Dispatcher
No installation required! A data-structure and broadcast-algorithm coding game for kids. Combine FIFO queue, LIFO stack, and color broadcast blocks to dock ships in order and learn real scheduling algorithms.
Turtle Painter — Coding Drawing Game for Kids
Control a little robot with movement, angle, and pen commands to draw geometric patterns. A no-install coding activity for learning sequences and spatial angles.
Sokoban Adventure — 98 Levels
Play classic Sokoban instantly with keyboard arrows or touch controls. Includes 98 solver-verified levels of increasing difficulty to build spatial reasoning, reverse planning, and deadlock awareness.
Responsive Webpage Multiviewer
Test website layouts across Mobile, Tablet, and Desktop viewports side-by-side in real-time. Toggle orientation, input live URLs, or test custom HTML. 100% free.
Instagram & TikTok Caption Hashtag Generator & Cleaner
Format social media captions with clean line breaks for Instagram and TikTok. Extract, sanitize, and count hashtags without text collapsing. 100% free and private.
QR Code Generator with Logo & Custom Palette
Generate custom high-resolution QR codes with brand logos, custom color palettes, and instant PNG/SVG vector download. 100% free and client-side private.
User-Agent String Parser & Browser Inspector
Parse and inspect User-Agent HTTP headers to detect browser name, version, operating system, rendering engine, and device type in real-time. 100% client-side.
Retail & E-commerce Barcode Generator (UPC-A, EAN-13, Code 128)
Generate instant, scannable retail barcodes (UPC-A, EAN-13, Code 128, Code 39) for Amazon, Etsy, and Shopify products. Export high-res PNG or vector SVG files. 100% free.
Keycode & Keyboard Event Detector
Press any key to inspect JavaScript KeyboardEvent properties in real-time, including event.key, event.code, keyCode, and modifier key states. 100% free.
JWT (JSON Web Token) Inspector & Decoder
Inspect and decode JSON Web Tokens (JWT) locally to examine headers, payload claims, and expiration status. 100% client-side, private, and secure.
HTML / XML Entity Encoder & Decoder
Safely encode special characters into HTML/XML entities to prevent XSS, or decode HTML entities back into plain readable text online. 100% client-side.
Social Media Bio Link Card Creator
Create a personalized multi-link bio page for Instagram, TikTok, and Twitter. Free Linktree alternative. Customize avatar, themes, and social links with instant 100% client-side HTML export.
Product Mockup Generator
Wrap your website and app screenshots inside clean MacBook and iPhone device frames. Generate professional presentation mockups instantly for free with 100% client-side privacy.
Regex Online Tester & Explainer
Test regular expressions online with real-time match highlighting, capturing group extraction, pattern breakdown, and quick preset cheat sheets. 100% client-side.
Learn C Programming: Console Text Adventure Game Engine
Learn C variables, printf/scanf input and output, and if-else branches through an interactive console dungeon adventure. Runs entirely in your browser.
CSS Box Shadow & Border-Radius Visual Editor
Visually design modern multi-layer CSS box shadows and individual corner border-radius curves with real-time preview and instant code copy. 100% free.
CSS Gradient & Glassmorphism Code Generator
Design linear, radial CSS gradients and modern translucent glassmorphism card UI effects with real-time preview and instant code copy. 100% free.
Cron Expression Generator & Schedule Explainer
Build, parse, and translate Cron job expressions into human-readable schedule explanations with next execution time calculations. 100% free and client-side safe.
Compound Interest & Investment Return Calculator
Calculate compound interest growth, monthly investment contributions, and inflation-adjusted future wealth. Interactive financial projection tool, 100% free and private.
JSON to CSV / CSV to JSON Converter
Convert JSON array data into clean CSV files, or parse CSV table data into structured JSON objects online. 100% free and client-side safe.
Mortgage & Loan Amortization Calculator
Calculate home mortgage monthly payments, total interest costs, and generate full yearly amortization schedules for US and UK loan standards. 100% free and private.
Salary Net Pay Estimator (Gross to Net Income)
Estimate your net take-home salary after federal income tax, state tax, and social security deductions. Visual payroll breakdown for US, UK, and global remote jobs.
WCAG Color Contrast Checker
Check text and background color contrast ratios for WCAG AA and AAA accessibility compliance. Real-time preview, score badges, and automated shade suggestions.
Expense Receipt PDF Merger & Organizer
Combine multiple receipt photos and PDF invoices into a single organized expense report PDF. Calculate total reimbursement with 100% client-side privacy.
Unit & Metric/Imperial Converter
Convert miles to kilometers, Fahrenheit to Celsius, pounds to kilograms, and more. Fast, accurate, and 100% free client-side unit converter.
Free Online Text Diff & Compare Tool
Compare two text snippets or code files side-by-side. Highlight added, deleted, and modified lines with 100% client-side privacy.
Duplicate Line Remover & Text Alphabetizer
Remove duplicate lines, alphabetize text lists, remove empty lines, and trim whitespace. 100% free and client-side private text cleaning tool.
Readability Score Checker (Flesch-Kincaid & Gunning Fog)
Analyze reading difficulty, grade level, and text complexity. Calculates Flesch Reading Ease, Flesch-Kincaid Grade, and Gunning Fog index with 100% client-side privacy.
Lorem Ipsum & Dummy Text Generator
Generate instant placeholder text in paragraphs, sentences, or words. Includes classic Lorem Ipsum and modern e-commerce dummy copy with 100% free privacy.
Text Cleaner & Whitespace Sanitizer
Remove extra spaces, consecutive empty lines, tabs, and unneeded line breaks. Free client-side text formatting and cleaning tool with 100% privacy.
Emoji Picker & Search Directory
Search and copy thousands of Unicode emojis instantly for social media posts, email subject lines, and marketing copy. Free client-side emoji directory.
Markdown Table Generator & CSV Import
Create, edit, and convert CSV data into Markdown tables visually. Custom column alignment and instant code copy with 100% free client-side privacy.
Privacy Policy & Terms of Service Template Generator
Generate customized Privacy Policy and Terms of Service documents for Shopify stores, SaaS apps, and blogs. Basic GDPR & CCPA starter templates with 100% free client-side privacy.
Text Hash Generator (MD5, SHA-1, SHA-256, SHA-512)
Generate MD5, SHA-1, SHA-256, and SHA-512 hashes instantly in your browser. Client-side security with zero data transmission.
Strong Password Generator & Security Strength Meter
Generate highly secure, customizable passwords with built-in cryptographic entropy meters. 100% free and client-side private password builder.
Email Signature HTML Generator
Create responsive, professional HTML email signatures for Gmail, Outlook, and Apple Mail. Custom branding, social links, and live preview with 100% free privacy.
Google Search
Search Console tools and reports help you measure your site's Search traffic and performance, fix issues, and make your site shine in Google Search results.
Pro AI Women's Fashion & Outfit Shoot Prompt Generator
Design commercial prompts for women's fashion eCommerce! Easily swap outfits, backgrounds, and models while controlling fabrics, accessories, and camera setups for Midjourney, Flux, SDXL, and Doubao.
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Lightweight, instant productivity tools that save you hours.