Tooloolis691

💻 Developer Tools (46)

The utility belt for daily development work: format JSON and SQL, test regex patterns, encode and decode, generate UUIDs and hashes, look up DNS records. Everything runs client-side, which means your code and data stay on your machine.

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Developer

46 tools · all client-side

JSON Formatter

Format, validate & minify JSON in your browser

Open

Regex Tester

Test regular expressions in real-time

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Base64 Encoder / Decoder

Encode or decode Base64 instantly

Open

JWT Decoder

Decode JSON Web Tokens — 100% client-side

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Hash Generator

Generate MD5, SHA-1, SHA-256, SHA-512 hashes

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URL Encoder / Decoder

Encode or decode URL-safe strings instantly

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UUID Generator

Generate v4 UUIDs — cryptographically random

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Unix Timestamp Converter

Convert between Unix timestamps and human dates

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Color Picker & Converter

Pick colors and convert HEX ↔ RGB ↔ HSL

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Markdown Editor

Write Markdown with live HTML preview

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SQL Formatter

Format and beautify SQL queries

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CSS Gradient Generator

Design linear and radial CSS gradients visually

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AI Text Detector

Detect AI-generated text with rule-based heuristics

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AI Token Counter

Count tokens for GPT-4, Claude, Gemini — with cost estimates

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Tiktoken Visualizer

See your text tokenized — colorful, instant, for GPT/Claude/Gemini

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Multi-Model AI Comparator

Compare GPT-4, Claude, Gemini — tokens + costs side-by-side

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PII Scrubber

Remove personal info before sending text to AI

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API Key Leak Detector

Scan text or files for leaked API keys — 20+ providers

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ChatGPT Export Viewer

View and search ChatGPT/Claude conversation exports

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Regex Explainer

Explain any regular expression in plain English

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Password Breach Checker

Check if your password has been in a data breach

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AI Hallucination Checker

Flag likely hallucinations in AI-generated text

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Battery Health Live Checker

Live battery status + charge cycles forecast

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Network Quality Live Test

Real RTT + jitter + packet loss measurement

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Display PPI / Resolution Detector

Pixel density, screen size, color depth — live

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Display Color Accuracy Tester

Test RGB, gradients, calibration patterns

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Microphone Frequency Response Test

Live FFT analysis of your mic input

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Screen Refresh Rate Detector

Detect 60Hz, 120Hz, 144Hz via rAF

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Screen Recorder

Record your screen, camera, or both — no install needed

Open

AI Regex Builder

Describe what you want in plain English — get the regex

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Cron Expression Builder

Build cron expressions visually — see next 10 run times

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Git Commit Message Generator

Generate conventional commit messages from your changes

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API Response Tester

Test API endpoints — send requests, see responses & latency

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Data Broker Removal Tracker

DIY checklist — 30+ data brokers + opt-out URLs

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Password Breach Pattern Check

Heuristic check — common-pattern detector, fully local

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Phishing URL Heuristic Score

Suspicious patterns in any URL — instant score

Open

Digital Footprint Self-Audit

How exposed are you online? 20-question audit

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File Metadata Risk Checklist

EXIF + Office metadata — what leaks before you share

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Browser Fingerprint Live Test

See exactly what trackers learn from your browser

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Internet Speed Test

Test your download & upload speed — ping, jitter & connection quality

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What's My IP

See your public IP address, location, ISP & connection details

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Favicon Generator

Generate favicons from image, text or emoji — all sizes & formats

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Barcode Generator

Generate barcodes — Code 128, EAN-13, UPC-A, Code 39 & more

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Online Whiteboard

Collaborative drawing board — freehand, shapes, text & sticky notes

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Flowchart Maker

Build flowcharts visually — drag & drop shapes, connectors & text

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DNS Lookup

A, AAAA, MX, TXT, NS & CNAME records — via Cloudflare DNS-over-HTTPS

Open
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