UD5 Toolkit
Text to Symbol Font - Online Special Unicode Converter
Map English letters to fancy mathematical or ornamental Unicode symbols. Create Facebook/Twitter bio art. All local.
Laundry Symbol Decoder – Online Wash, Dry, Iron Guide
Laundry Symbol Decoder
Decode wash, dry, bleach & iron symbols instantly. Understand every care label symbol at a glance.
Frequently Asked Questions
Rebus Puzzle Maker – Online Emoji + Text Word Puzzles
Create a rebus puzzle by combining emojis and letters, then challenge friends to solve. Fun brain teaser.
Unicode Character Map - Online Browse & Copy Symbols
Browse thousands of Unicode characters, search by name or code, and copy symbols to clipboard. Supports emojis, arrows, and math symbols.
Text to Character Array - Online For Programmers
Split a text into an array of individual characters, ready to paste into code. Options for quotes and newlines.
SQL Formatter & Beautifier - Online SQL Query Cleaner
Format and beautify SQL queries for improved readability. Supports various SQL dialects. Quick syntax highlighting and local processing ensure a secure experience.
JWT Debugger - Online JSON Web Token Decoder & Verifier
Decode the header and payload of a JSON Web Token (JWT) without verifying the signature. Inspect claims securely on the client side. Great for developers.
Paint Color Visualizer – Online Test Wall Colors on Sample Rooms
Simulate paint colors on a pre-loaded room photo by adjusting hue, saturation. Find your perfect shade before buying. Local canvas.
Crontab Expression Editor - Online Interactive Cron Builder
Build cron expressions using a visual editor with dropdowns. See human-readable description and next run times. Easier than raw cron.
Crontab Guru - Online Cron Expression Parser & Translator
Describe cron schedule expressions in plain English and test future execution times. Indispensable for DevOps and backend developers. Local analysis.
Home Repair Cost Estimator – Online Get Rough Job Prices
Select a repair type (leaky faucet, paint room, etc.) and get a typical cost range. Simple general guide, no personal data.
FizzBuzz Interactive Tester - Online Coding Classic
Run the classic FizzBuzz with custom rules. See the output for any range. A beginner programmer's playground.
Shipping Box Size Optimizer - Online Fit Items into Carton
Enter item dimensions and find the smallest rectangular box that can fit them (simple packing heuristic). Helps reduce shipping costs. Local algorithm.
Emoji Lookup - Online Search & Copy All Emojis
Search the complete emoji set by keyword or code. Click to copy. Includes skin tones and flags. Always up to date with Unicode.
Rust & Corrosion Texture Generator - Online Apply to Image
Overlay a realistic rust or corrosion texture onto your photo. Adjust blend mode and opacity. Download result.
JSON Path Finder - Online Search & Extract from Object
Search and extract values from a large JSON object using dot/bracket notation. Quickly locate deeply nested fields. Data stays local in your browser.
Printable Word Search Puzzle Maker - Online Generator
Enter a list of words and generate a custom word search puzzle in PDF/PNG format. Great for teachers and parties. Local.
Webhook Tester & Inspector - Online View Incoming Payloads
Generate a temporary webhook URL (mock) and view the JSON payloads sent to it. Great for testing integrations locally.
JWT Signature Verifier - Online HMAC/RSA/EC Check
Paste a JWT and a public key or secret to verify the signature. Supports HS256, RS256, ES256. All operations local.
Online Audio Noise Reducer - Free Background Hum Remover
Remove constant background noise from a short audio clip using a real‑time noise gate and spectral subtraction. All processing stays in your browser.
Image FFT Visualizer - Online See Frequency Domain
Upload an image and see its 2D FFT magnitude and phase. Learn how image filtering works. Educatinal tool. Canvas.
Emoji Slang Dictionary - Online Interpret Hidden Meanings
Look up what certain emojis really mean in texting (e.g., 🍆, 💀). Fun and educational for parents and newbies.
Cover Letter Generator - Online Customizable Job Application
Create a tailored cover letter based on job title, your skills, and a template. Download as text or PDF print. Private.
Leather Stitching Spacing Guide – Online SPI for Projects
Select project type and leather weight to get recommended stitch spacing and thread size.
Crystal Load Capacitance Calculator - Online Pierce Oscillator Tool
Calculate load capacitors for a crystal oscillator given stray capacitance and crystal CL. Essential for microcontroller circuit design. Local.
Emoji Image Generator - Online Picture from Emojis Mosaic
Recreate an image using a mosaic of emojis. Replace pixel blocks with matching emojis. Fun, unique effect. All done locally.
Text to ASCII Drawing - Online Simple Diagrams
Create simple ASCII diagrams (arrows, boxes, trees) using a visual editor. Copy the plain text art. For comments and docs.
Treasure Map Maker – Online Print Ancient‑Style Map
Drop landmarks onto an aged parchment background to create a custom treasure map. Print for kids.
Emoji Subdomain Generator - Online Punycode Converter
Enter an emoji or any Unicode, and get the valid Punycode for use in a domain name. Geeky and fun.
Image Watermarker - Online Add Text or Logo to Photos
Protect your images by adding a text or image watermark. Adjust transparency, position, and rotation. All image processing is done locally; no upload to server.
Query String Parser & Builder - Online URL Params Editor
Parse a URL's query string into a key-value table, or build a query string from parameters. Perfect for API testing and web development.