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Useful online tools. Ready when you are.

Make a decision, clean up JSON, build an AI prompt or create a QR sheet—fast, free and directly in your browser.

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Nothing to install. Most tools process your data locally in the browser.

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Fresh utilities, ready to use in your browser.

Free to useNo account required
Fast by defaultUseful presets included
Browser basedNothing to install
Privacy awareLocal processing where possible
Tool collections

Choose what you need

Browse all 35 tools by collection.

Random10 tools

Decision wheels, names, numbers, teams and prizes.

Games5 tools

Quick games, compatibility and numerology calculators.

Developer9 tools

JSON, cookies, encoding and everyday web utilities.

AI4 tools

Prompt builders and AI-readiness checks.

Image4 tools

Screenshot and image utilities that run locally.

Maker3 tools

Printable assets and practical creation tools.

Random collection

Random picker tools

Use a wheel or picker for quick, fair choices.

Random Letter Picker

Spin A-Z, a selected alphabet range or your own unique letters.

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Yes or No Wheel

Spin Yes, No, Maybe or your own custom answers for a quick decision.

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Random Number Wheel

Spin a number range with optional weights and no-repeat draws.

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Random Decision Generator

Add any choices and spin the wheel to make a quick, unbiased decision.

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Wheel Spinner

Start from an empty list and create a completely custom picker wheel.

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Random Food Picker

Spin a food wheel for lunch, dinner, restaurants or takeaway.

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Random Name Picker

Pick names fairly with optional no-repeat draws, visible history and shareable lists.

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Random Drink Picker

Choose coffee, tea, smoothies, soda or another drink idea.

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Random Team Picker

Select a team or group for classes, workshops, games and activities.

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Prize Wheel

Create a giveaway, raffle or rewards wheel and share it with participants.

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Games collection

Games and fun calculators

Play lightweight games and try entertainment calculators instantly.

Coin Flip

Flip a virtual coin with animation, live heads-or-tails results and session statistics.

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Magic 8 Ball

Ask a question and reveal a random Magic 8 Ball answer for a quick, shareable prediction.

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Rock Paper Scissors

Play Rock Paper Scissors against the computer with score tracking and instant rounds.

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Name Compatibility Calculator

Compare two names with a repeatable compatibility score, shared letters and name-number insights.

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Life Path Number Calculator

Calculate your Life Path Number and explore strengths, challenges, career, love and personal year themes.

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Developer collection

JSON and web utilities

Create, format, compare and inspect common web data in your browser.

Markdown Table Formatter

Format Markdown tables or convert CSV and TSV into clean, aligned Markdown locally in your browser.

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JSONL Viewer & Validator

Inspect JSON Lines as a searchable table, find invalid rows and export valid data as JSON or CSV.

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Mojibake & Encoding Repair Tool

Detect and repair garbled UTF-8, Windows-1252 and Latin-1 text privately in your browser.

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Browser Command Palette

Build a searchable Ctrl+K launcher for favorite websites and browser tools.

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JSON Mock API Generator

Generate JSON mock API configurations, fetch examples and MSW handlers for development.

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URL List to QR Sheet

Turn a list of links into a printable sheet of labeled QR codes.

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JSON Diff Tool

Compare two JSON objects and find added, removed and changed values.

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Cookie Parser

Parse HTTP Cookie headers, decode values and copy them as JSON.

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JSON Stringify Tool

Validate, compact, escape and unstringify JSON privately in your browser.

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AI collection

AI creator tools

Turn rough ideas into clearer prompts and check AI crawler readiness.

AI Agent Website Crawlability Checker

Audit robots.txt, sitemap.xml, llms.txt, page readability and major AI crawler rules.

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Prompt Variable Filler

Fill reusable AI prompt templates with topic, audience, tone, style, output and length.

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AI Prompt Library Generator

Build structured prompt templates for writing, coding, research and productivity.

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Google Flow Prompt Generator

Create free Veo 3.1 prompts with camera, motion, audio, aspect ratio and structured JSON.

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Image collection

Image tools

Edit, combine and prepare images directly in your browser.

Color Contrast Checker

Check WCAG contrast ratios for text and UI colors, preview readability and copy an accessible CSS color pair.

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Image Color Palette Extractor

Extract dominant colors and reusable hex values from an image locally, then copy or export the palette.

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Subtitle Screenshot Stitcher

Keep the first video frame, detect subtitle bands in later screenshots and stack them into one caption PNG.

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Long Screenshot Maker

Merge scrolling screenshots by dragging until each overlap matches, then export one long PNG.

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Maker collection

Printable maker tools

Create practical printable assets directly in your browser.

Time Zone Meeting Planner

Compare working hours across cities, find shared meeting windows and copy a daylight-saving-aware local-time summary.

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Printable Chore Chart Maker

Build a weekly chore chart for families or roommates, assign tasks and days, then print or save as PDF.

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Printable QR Business Card Sheet

Create A4 business card sheets with a logo, contact details and vCard QR codes.

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