Coding & Development
Owl Util
1h agoOwl Util offers a collection of 30 free, browser‑based tools covering development, data handling, design, health, art, and productivity. Users can format JSON, validate regex, visualize code, run SQL queries, edit CSV files, count AI tokens, generate QR codes, convert text to PDF, create ASCII art, test color blindness, explore tantric symbols, pick random items, play brain‑tug games, repeat text, view optical illusions, read stoic quotes, calculate date differences, upscale media, edit video subtitles, trim videos, solve puzzles, and more—all without sign‑up or installation.
JSON FormatterRegex ValidatorCode VisualizerRainscapeSQL MasterCSV EditorToken CounterQR GeneratorText to PDFASCII Art GeneratorColor Blind TestTantra ExplorerRandom PickerBrain Tug GameText RepeaterIllusion LabStoic QuotesDate Difference CalculatorDarshanvaani PlatformVMR EditorDSA PracticeVideo TrimJigsaw PuzzlesRandAnimalAI Video and Image UpscalerColor ScreenSubtitle EditorWord CounterAI ChatbotPassport Photo Creator
Key Capabilities
01
JSON Formatter
Beautify, minify, and validate JSON data instantly with tree visualization.
02
Regex Validator
Test, debug, and validate regular expressions in real‑time.
03
Code Visualizer
Visualize, format, and share code beautifully in the browser.
04
Rainscape
Immersive ambient rain sounds with procedurally generated audio and visual scenes.
05
SQL Master
Write, test, and format SQL queries directly in the browser.
06
CSV Editor
Edit, filter, sort, and transform CSV data with a spreadsheet‑like interface.
07
Token Counter
Count tokens for LLM prompts and responses, supporting GPT, Claude, and more.
08
QR Generator
Generate QR codes for URLs, text, Wi‑Fi, or contact cards instantly.
09
Text to PDF
Convert text documents, markdown, or plain text to PDF instantly.
10
ASCII Art Generator
Create creative ASCII art from text or images for sharing.
11
Color Blind Test
Interactive Ishihara‑style color vision assessment in the browser.
12
Tantra Explorer
Explore ancient tantric texts, symbols, and visualizations online.
13
Random Picker
Pick a random name or item from a custom list using a spinning wheel.
14
Brain Tug Game
Test mental math skills against a computer opponent in a fast‑paced game.
15
Text Repeater
Repeat any text multiple times instantly.
16
Illusion Lab
Create and explore optical illusions and visual tricks.
17
Stoic Quotes
Daily wisdom and quotes from ancient Stoic philosophers.
18
Date Difference Calculator
Calculate differences between two dates, including business days.
19
Darshanvaani Platform
Guidance platform focusing on philosophy.
20
VMR Editor
Powerful video watermark remover tool.
21
DSA Practice
Learn and practice data structures and algorithms.
22
Video Trim
Trim and cut video files locally in the browser.
23
Jigsaw Puzzles
Play relaxing jigsaw puzzles with beautiful images online.
24
RandAnimal
Discover a random animal instantly.
25
AI Video and Image Upscaler
Upscale videos and images using AI.
26
Color Screen
Display a full‑screen color for monitor testing or ambient light.
27
Subtitle Editor
Generate, edit, style, and export video subtitles privately.
28
Word Counter
Analyze word count, keyword density, and reading time.
29
AI Chatbot
Free, private AI chatbot running entirely in the browser, powered by Gemma 2B.
30
Passport Photo Creator
Create compliant passport photos with exact specifications privately.
Use Cases
Developer debuggingValidate JSON structures and regular expressions while coding.Software developers
Data analysisEdit and transform CSV datasets without installing spreadsheet software.Data analysts
Database prototypingWrite and test SQL queries directly in the browser for quick prototyping.Database administrators
Design asset creationGenerate QR codes, ASCII art, and passport‑style photos for marketing materials.Graphic designers
Content creationConvert markdown or plain text to PDF for publishing and sharing.Writers and marketers
AI prompt engineeringCount tokens for prompts to optimize usage with large language models.AI developers and prompt engineers
Health and accessibility testingAssess color vision and perform color‑blind tests online.Healthcare professionals and UI/UX designers
Educational practicePractice data structures and algorithms or solve mental‑math challenges with games.Students and educators
Video editing on the goTrim videos, remove watermarks, and edit subtitles without uploading to a server.Content creators and videographers
Daily inspirationRead stoic quotes or philosophical guidance for personal development.General public seeking motivation
Update History
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