QR Generator
Generate clean QR codes for links, text, and WiFi.
Guides
How-to Guides for Every Tool
Practical, short walkthroughs for faster results on LilUtils.
Everyday Utilities
Unit Converter
Convert length, weight, temperature, and more.
Text Cleaner
Normalize, trim, and clean messy text instantly.
Age Calculator
Calculate exact age in years, months, and days.
Word Counter
Count words, characters, and reading time.
Password Generator
Generate strong passwords locally with a quick strength signal.
Case Converter + Slugify
Convert text between common cases and generate clean slugs.
Timezone Converter / World Clock
Plan a meeting time across common timezones without leaving the browser.
Creator Toolkit
Social Image Resizer
Resize visuals for every platform in one pass.
Color Palette Generator
Extract palettes from images or generate new sets.
Gradient Builder
Build smooth gradients with live CSS output.
Favicon Generator
Generate favicon sets and app icons in seconds.
OG Image Generator
Create Open Graph images with clean templates.
Image Compressor
Compress images locally with a quality setting and preview-ready output.
SVG Optimizer / Minifier
Minify inline SVG markup locally before shipping it to production.
Color Contrast Checker
Check WCAG contrast and get a fast accessibility signal for text colors.
Dev Quick Tools
JSON Formatter
Format and validate JSON with instant errors.
JWT Decoder
Inspect JWT headers and payloads locally with optional public-key verification.
Regex Tester
Test regex patterns with highlighted matches, presets, and persistent flags.
Base64 Encode/Decode
Encode or decode text and files instantly.
UUID Generator
Generate UUID v4 identifiers on demand.
Cron Parser
Decode cron expressions, use presets, and preview upcoming schedules.
Sitemap Generator
Generate XML sitemaps from URL lists.
URL Encode/Decode
Encode or decode URLs and query strings.
JSON ⇄ YAML Converter
Convert between JSON and YAML locally for config and API workflows.
URL Parser + UTM Builder
Inspect URL parts and add clean UTM parameters for campaign links.
Hash Generator
Generate SHA-256, MD5, and HMAC hashes locally with Web Crypto.
React Config JSON Formatter
Format, validate, and debug React Config JSON with instant browser-based error highlighting.
React Environment JSON Formatter
Format, validate, and debug React Environment JSON with instant browser-based error highlighting.
React API Response JSON Formatter
Format, validate, and debug React API Response JSON with instant browser-based error highlighting.
React Webhook Payload JSON Formatter
Format, validate, and debug React Webhook Payload JSON with instant browser-based error highlighting.
React State JSON Formatter
Format, validate, and debug React State JSON with instant browser-based error highlighting.
React Native Config JSON Formatter
Format, validate, and debug React Native Config JSON with instant browser-based error highlighting.
React Native Environment JSON Formatter
Format, validate, and debug React Native Environment JSON with instant browser-based error highlighting.
React Native API Response JSON Formatter
Format, validate, and debug React Native API Response JSON with instant browser-based error highlighting.
React Native Webhook Payload JSON Formatter
Format, validate, and debug React Native Webhook Payload JSON with instant browser-based error highlighting.
React Native State JSON Formatter
Format, validate, and debug React Native State JSON with instant browser-based error highlighting.
Next.js Config JSON Formatter
Format, validate, and debug Next.js Config JSON with instant browser-based error highlighting.
Next.js Environment JSON Formatter
Format, validate, and debug Next.js Environment JSON with instant browser-based error highlighting.
Next.js API Response JSON Formatter
Format, validate, and debug Next.js API Response JSON with instant browser-based error highlighting.
Next.js Webhook Payload JSON Formatter
Format, validate, and debug Next.js Webhook Payload JSON with instant browser-based error highlighting.
Next.js State JSON Formatter
Format, validate, and debug Next.js State JSON with instant browser-based error highlighting.
Node.js Config JSON Formatter
Format, validate, and debug Node.js Config JSON with instant browser-based error highlighting.
Node.js Environment JSON Formatter
Format, validate, and debug Node.js Environment JSON with instant browser-based error highlighting.
Node.js API Response JSON Formatter
Format, validate, and debug Node.js API Response JSON with instant browser-based error highlighting.
Node.js Webhook Payload JSON Formatter
Format, validate, and debug Node.js Webhook Payload JSON with instant browser-based error highlighting.
Node.js State JSON Formatter
Format, validate, and debug Node.js State JSON with instant browser-based error highlighting.
TypeScript Config JSON Formatter
Format, validate, and debug TypeScript Config JSON with instant browser-based error highlighting.
TypeScript Environment JSON Formatter
Format, validate, and debug TypeScript Environment JSON with instant browser-based error highlighting.
TypeScript API Response JSON Formatter
Format, validate, and debug TypeScript API Response JSON with instant browser-based error highlighting.
TypeScript Webhook Payload JSON Formatter
Format, validate, and debug TypeScript Webhook Payload JSON with instant browser-based error highlighting.
TypeScript State JSON Formatter
Format, validate, and debug TypeScript State JSON with instant browser-based error highlighting.
Python Config JSON Formatter
Format, validate, and debug Python Config JSON with instant browser-based error highlighting.
Python Environment JSON Formatter
Format, validate, and debug Python Environment JSON with instant browser-based error highlighting.
Python API Response JSON Formatter
Format, validate, and debug Python API Response JSON with instant browser-based error highlighting.
Python Webhook Payload JSON Formatter
Format, validate, and debug Python Webhook Payload JSON with instant browser-based error highlighting.
Python State JSON Formatter
Format, validate, and debug Python State JSON with instant browser-based error highlighting.
Go Config JSON Formatter
Format, validate, and debug Go Config JSON with instant browser-based error highlighting.
Go Environment JSON Formatter
Format, validate, and debug Go Environment JSON with instant browser-based error highlighting.
Go API Response JSON Formatter
Format, validate, and debug Go API Response JSON with instant browser-based error highlighting.
Go Webhook Payload JSON Formatter
Format, validate, and debug Go Webhook Payload JSON with instant browser-based error highlighting.
Go State JSON Formatter
Format, validate, and debug Go State JSON with instant browser-based error highlighting.
Django Config JSON Formatter
Format, validate, and debug Django Config JSON with instant browser-based error highlighting.
Django Environment JSON Formatter
Format, validate, and debug Django Environment JSON with instant browser-based error highlighting.
Django API Response JSON Formatter
Format, validate, and debug Django API Response JSON with instant browser-based error highlighting.
Django Webhook Payload JSON Formatter
Format, validate, and debug Django Webhook Payload JSON with instant browser-based error highlighting.
Django State JSON Formatter
Format, validate, and debug Django State JSON with instant browser-based error highlighting.
Express Config JSON Formatter
Format, validate, and debug Express Config JSON with instant browser-based error highlighting.
Express Environment JSON Formatter
Format, validate, and debug Express Environment JSON with instant browser-based error highlighting.
Express API Response JSON Formatter
Format, validate, and debug Express API Response JSON with instant browser-based error highlighting.
Express Webhook Payload JSON Formatter
Format, validate, and debug Express Webhook Payload JSON with instant browser-based error highlighting.
Express State JSON Formatter
Format, validate, and debug Express State JSON with instant browser-based error highlighting.
Vue Config JSON Formatter
Format, validate, and debug Vue Config JSON with instant browser-based error highlighting.
Vue Environment JSON Formatter
Format, validate, and debug Vue Environment JSON with instant browser-based error highlighting.
Vue API Response JSON Formatter
Format, validate, and debug Vue API Response JSON with instant browser-based error highlighting.
Vue Webhook Payload JSON Formatter
Format, validate, and debug Vue Webhook Payload JSON with instant browser-based error highlighting.
Vue State JSON Formatter
Format, validate, and debug Vue State JSON with instant browser-based error highlighting.
Svelte Config JSON Formatter
Format, validate, and debug Svelte Config JSON with instant browser-based error highlighting.
Svelte Environment JSON Formatter
Format, validate, and debug Svelte Environment JSON with instant browser-based error highlighting.
Svelte API Response JSON Formatter
Format, validate, and debug Svelte API Response JSON with instant browser-based error highlighting.
Svelte Webhook Payload JSON Formatter
Format, validate, and debug Svelte Webhook Payload JSON with instant browser-based error highlighting.
Svelte State JSON Formatter
Format, validate, and debug Svelte State JSON with instant browser-based error highlighting.
Spring Boot Config JSON Formatter
Format, validate, and debug Spring Boot Config JSON with instant browser-based error highlighting.
Spring Boot Environment JSON Formatter
Format, validate, and debug Spring Boot Environment JSON with instant browser-based error highlighting.
Spring Boot API Response JSON Formatter
Format, validate, and debug Spring Boot API Response JSON with instant browser-based error highlighting.
Spring Boot Webhook Payload JSON Formatter
Format, validate, and debug Spring Boot Webhook Payload JSON with instant browser-based error highlighting.
Spring Boot State JSON Formatter
Format, validate, and debug Spring Boot State JSON with instant browser-based error highlighting.
Auth0 JWT Decoder
Decode and inspect Auth0 JWT tokens locally without sending secrets to a server.
Firebase JWT Decoder
Decode and inspect Firebase JWT tokens locally without sending secrets to a server.
Okta JWT Decoder
Decode and inspect Okta JWT tokens locally without sending secrets to a server.
Cognito JWT Decoder
Decode and inspect Cognito JWT tokens locally without sending secrets to a server.
Supabase JWT Decoder
Decode and inspect Supabase JWT tokens locally without sending secrets to a server.
Clerk JWT Decoder
Decode and inspect Clerk JWT tokens locally without sending secrets to a server.
Keycloak JWT Decoder
Decode and inspect Keycloak JWT tokens locally without sending secrets to a server.
FusionAuth JWT Decoder
Decode and inspect FusionAuth JWT tokens locally without sending secrets to a server.
Image Base64 Encode/Decode
Instantly encode or decode Image formats using Base64 directly in the browser.
PDF Base64 Encode/Decode
Instantly encode or decode PDF formats using Base64 directly in the browser.
SVG Base64 Encode/Decode
Instantly encode or decode SVG formats using Base64 directly in the browser.
JSON Payload Base64 Encode/Decode
Instantly encode or decode JSON Payload formats using Base64 directly in the browser.
Auth Header Base64 Encode/Decode
Instantly encode or decode Auth Header formats using Base64 directly in the browser.