Free browser tools for code, text, design, images, and AI — that respect your data.
TULAKITO is a clean toolbox of 150 single-purpose helpers across 7 categories. Format JSON, generate QR codes, count LLM tokens, build CSS layouts, compress images, and more — all running locally in your browser. No accounts, no uploads, no tracking of what you paste.
Choose a category or search the full toolbox.
Developer
JSON Beautifier
Format, minify, and validate JSON with readable errors.
Base64 Encoder
Encode text to Base64 or decode Base64 safely in your browser.
URL Encoder
Encode and decode URL strings without sending data anywhere.
Regex Tester
Test regular expressions against sample text with live matches.
JWT Decoder
Decode JWT headers and payloads locally without verifying secrets.
UUID Generator
Generate browser-native UUID v4 identifiers instantly.
Hash Generator
Generate SHA hashes from text using the browser Web Crypto API.
Timestamp Converter
Convert Unix timestamps and ISO dates into readable time formats.
JSON to CSV
Convert arrays of JSON objects into CSV text for spreadsheets.
CSV to JSON
Convert simple CSV data into structured JSON arrays.
HTML Entity Encoder
Encode or decode HTML entities for safe markup snippets.
Text Diff Checker
Compare two text blocks line by line and spot changes.
SQL Formatter
Format common SQL keywords onto readable query lines.
XML Formatter
Pretty print compact XML markup with indentation.
cURL to Fetch Converter
Convert curl commands into JavaScript fetch or axios snippets.
Cron Expression Builder
Build and explain cron schedules with a live human-readable preview.
JSON Schema Validator
Validate JSON data against a JSON Schema definition.
JSON Path Evaluator
Run JSONPath queries against JSON documents in the browser.
YAML JSON Converter
Convert YAML to JSON and JSON to YAML both directions.
HTTP Status Codes
Browse and search every HTTP status code with descriptions.
CIDR Subnet Calculator
Calculate network, broadcast, mask, and host range for any CIDR.
Mock Data Generator
Generate fake users, addresses, and records as JSON for testing.
JSON Diff Viewer
Compare two JSON documents and see added, removed, and changed keys.
JSON Sort and Minify
Sort JSON keys alphabetically and minify in one click.
JSON Escape Encoder
Escape JSON strings for embedding in code or unescape them back.
Luhn Card Validator
Validate credit card numbers and IMEIs using the Luhn algorithm.
JSON to TypeScript
Convert JSON into TypeScript interfaces and type aliases instantly.
JSON to Go Struct
Generate Go struct definitions from JSON with proper tags.
JSON to Zod Schema
Generate Zod schemas from JSON payloads for runtime validation.
JSON to Pydantic Model
Convert JSON into Python Pydantic v2 model classes.
XML to JSON Converter
Convert XML markup into structured JSON and back to XML.
TOML to JSON Converter
Convert TOML configuration to JSON and JSON back to TOML.
ENV to JSON Converter
Parse dotenv files into JSON and convert JSON keys back to .env format.
JWT Generator
Sign HS256 JWTs in your browser using the Web Crypto API.
SVG to JSX Converter
Convert raw SVG markup into React JSX with camelCase attributes.
HTML to JSX Converter
Convert HTML snippets into JSX for React components.
Htaccess Rule Generator
Build .htaccess redirects, rewrites, and basic auth rules.
Cookie String Parser
Parse Set-Cookie and document.cookie strings into a readable table.
Writer
Word Counter
Count words, characters, sentences, paragraphs, and reading time.
Case Converter
Convert writing into lowercase, title case, camelCase, and more.
Markdown Preview
Preview Markdown locally with a focused editor and output pane.
Slug Generator
Turn titles and phrases into clean URL-friendly slugs.
Find and Replace
Replace words, phrases, or patterns in text quickly.
Duplicate Line Remover
Remove repeated lines while preserving the first occurrence.
Whitespace Cleaner
Trim messy spacing, line breaks, tabs, and repeated whitespace.
Lorem Ipsum Generator
Generate placeholder paragraphs for drafts, mockups, and layouts.
Readability Estimator
Estimate reading ease from words, sentences, and syllables.
Sentence Counter
Count sentences, words, and average sentence length.
Text Reverser
Reverse characters, words, or line order in text.
Line Sorter
Sort lines alphabetically, reverse order, or remove blanks.
Markdown HTML Converter
Convert Markdown to HTML and HTML back to Markdown.
ASCII Art Generator
Turn text into ASCII art banners and figlet-style headers.
Morse Code Translator
Translate text to Morse code and decode Morse back to text.
NATO Phonetic Converter
Spell text using the NATO phonetic alphabet for clear speech.
ROT13 Caesar Cipher
Encode and decode text with ROT13 and Caesar shift ciphers.
Markdown TOC Generator
Generate a table of contents from Markdown headings.
HTML Tag Stripper
Remove HTML tags and entities to extract plain text.
Smart Quote Converter
Convert between straight quotes, curly quotes, and dashes.
Invisible Character Finder
Detect zero-width and invisible Unicode characters in text.
Line Ending Converter
Convert line endings between LF, CRLF, and CR, plus tabs to spaces.
Unicode Character Inspector
Inspect any character to see its codepoint, name, and Unicode block.
Emoji Search and Picker
Search emoji by name or keyword and copy them instantly.
Fancy Text Generator
Convert text into bold, italic, script, and other Unicode font styles.
Upside Down Text
Flip text upside down using Unicode characters for social bios.
Zalgo Text Generator
Generate glitchy zalgo text with stacked combining diacritics.
Strikethrough Text
Add Unicode strikethrough, underline, and overline to any text.
Small Caps Generator
Convert text into small caps, superscript, and subscript Unicode.
Discord ANSI Colors
Format Discord code blocks with ANSI colors for chat messages.
Tweet Thread Splitter
Split long text into numbered tweets that fit the 280 character limit.
Social Character Counter
Count characters against X, LinkedIn, Instagram, TikTok, and YouTube limits.
Binary Text Converter
Convert text to binary code and decode binary back to readable text.
SRT VTT Converter
Convert subtitles between SRT and WebVTT formats both directions.
SEO
Meta Tag Generator
Generate essential title, description, canonical, and robots meta tags.
Open Graph Generator
Build Open Graph and Twitter card tags for better link previews.
UTM Builder
Create campaign tracking URLs with common UTM parameters.
Robots.txt Generator
Generate a simple robots.txt file with sitemap support.
Schema Markup Generator
Create basic JSON-LD schema markup for websites and articles.
SERP Snippet Preview
Preview how a title, URL, and description may look in search results.
Keyword Density Checker
Find repeated words and estimate keyword density in page copy.
Heading Structure Checker
Extract H1-H6 headings from HTML and review page structure.
Hreflang Generator
Generate hreflang link tags for multilingual pages.
XML Sitemap Generator
Build a valid XML sitemap from a list of URLs and priorities.
HTML Link Extractor
Paste HTML to extract internal, external, and nofollow links.
Image Alt Auditor
Paste HTML and list every image with missing or duplicate alt text.
Anchor Text Analyzer
Paste HTML and see anchor text frequency for every linked URL.
RSS Feed Generator
Build a valid RSS 2.0 feed XML from blog entries and metadata.
Designer
Color Converter
Convert HEX colors into RGB and HSL values.
Contrast Checker
Check WCAG contrast ratios for foreground and background colors.
CSS Gradient Generator
Create linear gradients and copy CSS background code.
PX to REM Converter
Convert pixel values to rem units using a configurable base size.
Color Palette Generator
Generate a simple tint and shade palette from one color.
Box Shadow Generator
Tune CSS box-shadow values and copy the result.
Border Radius Generator
Preview and copy CSS border-radius values.
CSS Grid Generator
Visually design CSS grid layouts and copy the generated code.
CSS Flexbox Generator
Tune flex-direction, justify, align, and gap with live preview.
CSS Animation Generator
Build CSS keyframe animations and copy ready-to-use code.
CSS Clip-path Generator
Create CSS clip-path shapes with a visual editor.
CSS Filter Generator
Combine blur, brightness, contrast, and more into a CSS filter.
Glassmorphism Generator
Build frosted glass cards with backdrop-filter CSS.
Mesh Gradient Generator
Create modern mesh gradients with multiple radial color stops.
SVG Wave Generator
Generate SVG waves and dividers for hero sections.
Favicon Generator
Turn a letter or emoji into a downloadable PNG favicon.
Image to Base64
Convert an image to a Base64 data URI for inline embedding.
Color Mixer
Blend two colors with adjustable ratio and copy the mix.
Cubic Bezier Editor
Edit CSS cubic-bezier easing curves with a draggable preview.
CSS Triangle Generator
Generate CSS-only triangles and arrows with adjustable direction.
Neumorphism Generator
Build soft neumorphism shadow surfaces with a live preview.
CSS Button Generator
Design CSS buttons with gradient, hover, and shadow controls.
CSS Loader Generator
Generate pure CSS spinners and loading animations to copy.
Tailwind Shade Generator
Generate a Tailwind-style 50 to 950 color scale from one color.
Color Blindness Simulator
Preview an image or color through common color blindness filters.
Blob SVG Generator
Generate organic blob shapes as SVG for hero sections.
CSS Pattern Generator
Build repeating CSS background patterns with stripes and dots.
Conic Gradient Generator
Build CSS conic gradients with angles and color stops.
Productivity
Password Generator
Generate strong random passwords with adjustable character options.
Unit Converter
Convert common length and weight units instantly.
Random Number Generator
Generate random numbers within a custom range.
Pomodoro Timer
Focus with a 25/5 Pomodoro timer that runs in your browser.
Countdown and Stopwatch
Run a countdown timer or a stopwatch with lap tracking.
Time Zone Converter
Convert a time across multiple cities and time zones at once.
Number Base Converter
Convert between binary, octal, decimal, hex, and Roman numerals.
Random Decision Maker
Flip a coin, roll dice, or get a yes or no answer instantly.
List Randomizer
Shuffle a list or pick a random winner from a list of entries.
Quick Notes Scratchpad
A Markdown-aware scratchpad saved in your browser locally.
Day of Week Finder
Find the weekday, ISO week, and day-of-year for any date.
Username Generator
Generate creative usernames and handles in multiple styles.
Email Signature Generator
Build a clean HTML email signature you can paste into your client.
Markdown Resume Builder
Write a resume in Markdown and export a clean print-ready page.
Bookmarklet Generator
Wrap JavaScript into a properly encoded javascript: bookmarklet.
Bulk URL Opener
Paste a list of URLs and open them all in new browser tabs.
IBAN Validator
Validate and format international bank account numbers locally.
ICS Event Generator
Build a downloadable .ics calendar event file from a form.
Media
Image Compressor
Compress JPG, PNG, and WebP images in the browser without uploads.
Image Resizer
Resize images to specific dimensions while keeping aspect ratio.
Image Format Converter
Convert between PNG, JPG, and WebP image formats locally.
Image Cropper
Crop an image to a custom rectangle and download the result.
Image EXIF Viewer
View image EXIF metadata and download a stripped copy for privacy.
QR Code Generator
Generate downloadable QR codes for URLs, text, and Wi-Fi credentials.
Color Picker from Image
Pick exact colors from any uploaded image with a pixel eyedropper.
Image to PDF
Combine JPG and PNG images into a single downloadable PDF file.
PDF Merge
Merge multiple PDF files into one document in your browser.
PDF Split
Split a PDF into per-page or per-range files locally.
Image to ASCII Art
Convert any image into ASCII art with adjustable detail and width.
Image Watermark Adder
Add text or image watermarks to photos directly in your browser.
AI
LLM Token Counter
Estimate token counts for GPT, Claude, and Llama prompts.
Prompt Template Builder
Build reusable prompt templates with variables and live preview.
JSON Mode Output Cleaner
Extract clean JSON from messy LLM responses with code fences.
LLM Pricing Comparator
Compare model pricing for input and output tokens across providers.
Token Boundary Visualizer
See how a prompt is tokenized with color-coded token boundaries.
Function Calling Builder
Convert a JSON schema into OpenAI and Anthropic tool-call specs.