Explore all 164 tools

Pick colors from images with the eyedropper or explore the interactive color spectrum. Copy HEX, RGB, HSL codes with auto-history (last 10 colors). Free online tool.

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Compound Interest Calculator

See how your money grows with compound interest. Charts.

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Coordinate Converter

Convert coordinates between DD, DMS, DDM, and UTM formats instantly. All four formats on one screen with live, buttonless conversion.

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Countdown Timer

Set a date and time, get a live countdown. Embeddable.

🌐

Country Code Lookup

Look up ISO alpha-2, alpha-3, dialing codes, country TLDs, and currency codes for 250 countries. Search, sort, and copy with one click.

⏰

Cron Expression Builder

Visual cron builder. Human-readable. Presets included.

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Currency Converter

Live exchange rates. Frankfurter API, 7-day chart.

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DCA Calculator

Dollar Cost Averaging. Add buys, see real average cost.

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DPI & PPI Calculator

Calculate screen pixel density. For designers and developers.

📅

Date Difference Calculator

Days between dates. Business days, years, weeks.

🖥️

Dead Pixel Test

Full-screen color test for your screen. No ads during the test.

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Decibel Meter

Measure sound levels. Great for classrooms and events.

🎮

Discord Link Preview

Preview how your link appears as a Discord embed. Colored sidebar, title, description, inline image. Free preview tool.

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Distance Calculator

Calculate straight-line distance between any two points on Earth. Coordinates or cities — instant km, miles, nmi.

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Dividend Reinvestment Calculator

Calculate dividend returns with reinvestment and tax.

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Dockerfile & Docker Compose Generator

Generate Dockerfile and compose files for Node, Python, Go, Java. Pick DB, ports, env vars. No Docker experience needed.

😊

Emoji Copy & Paste

Free emoji picker to copy and paste emojis instantly. Browse 1,800+ emojis across 9 categories. No app, no keyboard needed.

❓

FAQ Schema Generator

Create FAQPage structured data (JSON-LD). Question-answer pairs, copy code.

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Facebook Link Preview

Preview how your link appears on Facebook. Fetch OG meta tags and see the exact Facebook card layout instantly.

🎨

Favicon Generator

Design pixel-perfect favicons free online. Draw on a 32×32 canvas with 16 templates, preview at all favicon sizes, and export as PNG or real ICO. No upload required.

🎛️

Frequency Generator & Tone Tool

Pure tones 20Hz-20kHz. Water extraction mode included.

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Function Graph Plotter

Math function graphing. sin, cos, x², multi-function.

🎞️

GIF Maker

Create animated GIFs from multiple images. Combine, reorder, adjust timing, preview, and download — all in your browser with zero uploads.

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Gradient Generator

CSS gradients: linear, radial, conic. Copy CSS code.

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HTML Entity Encoder & Decoder

Encode/decode HTML entities. XSS prevention.

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HTML Formatter & Beautifier

Format & beautify HTML. Minify HTML for production. Preserves script/style, handles void elements correctly.

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HTML to Markdown Converter

Convert HTML to Markdown instantly. Handles headings, lists, links, images, tables, code blocks. Free, client-side, no sign-up.

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HTTP Header Checker

Check HTTP response headers for any URL. View status, security, cache headers. Free developer tool.

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Hash Generator

SHA-256, SHA-1, SHA-512. Web Crypto API.

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Hreflang Tag Generator

Generate hreflang link tags for multilingual SEO. 50+ languages, smart URL patterns. Free hreflang tool.

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IP Subnet Calculator

Calculate subnet details from IP + mask. Network, broadcast, usable hosts, wildcard mask. IPv4.

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Image Compressor

Compress JPEG, PNG & WebP images. One slider, instant results.

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Image Cropper

Crop, rotate & flip images in your browser. Canvas API, no upload.

🎚️

Image Filters & Adjustments

Adjust brightness, contrast, saturation & Gaussian blur. Per-channel RGB contrast. Canvas API, no upload.

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Image Format Converter

PNG, JPEG, WebP conversion. Batch processing support.

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Image Resizer & Compressor

Resize & compress images. Canvas API, no upload.

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Image to PDF

Convert JPG, PNG, WebP images to PDF. A4/Letter, margins.

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Inflation Calculator

Calculate inflation impact. Future value of money.

🧾

Invoice Generator

Create invoices, print-ready template. Export via print.

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JSON Compare

Compare two JSON objects. Find added/removed/changed keys.

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JSON Escape / Unescape

Escape and unescape JSON strings. Convert special chars to JSON-safe sequences. Decode escaped strings.

{ }

JSON Formatter & Validator

Format, validate, minify JSON. Error line detection.

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JSON Minifier

Minify and compress JSON. Strip whitespace, reduce file size. Size comparison stats.

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JSON Schema Generator

Generate JSON Schema from JSON. Auto-detects types.

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JSON to CSV Converter

Convert JSON to CSV instantly. Paste JSON and get clean CSV output. Free, browser-based, zero-dependency.

☕

JSON to Java POJO/DTO Converter

Convert JSON to Java POJO classes with Lombok, Jackson, nested objects. Free online converter, no sign-up.

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JSON to SQL Converter

Convert JSON to SQL INSERT/CREATE TABLE statements. MySQL, PostgreSQL, SQLite, MSSQL. Nested flattening.

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JSON to TypeScript Generator

Convert JSON to TypeScript interfaces, types, and enums. Optional readonly, strict null checks.

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JSON ↔ YAML Converter

Convert JSON to YAML and YAML to JSON. js-yaml powered, bidirectional. Handles nested objects and arrays.

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JSONPath Tester

Evaluate JSONPath queries. Select data from JSON.

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JWT Decoder

Decode JWT tokens. View header, payload, expiration.

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Keto & Macro Calculator

Calculate keto macros. BMR, TDEE, doughnut chart.

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LinkedIn Link Preview

Preview how your link appears on LinkedIn. Fetch OG meta tags and see LinkedIn card layout. Free professional sharing tool.

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Loan & Mortgage Calculator

Loan calculator. Monthly payment, amortization, early payoff.

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Markdown Previewer

Live Markdown preview. Write left, see rendered HTML right.

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Markdown Table Generator & CSV Converter

Create Markdown tables visually or paste CSV. Align columns, export to HTML. Works with GitHub Flavored Markdown.

💸

Meeting Cost Calculator

Calculate meeting costs instantly — total, per-minute, hourly rate, and annualized for recurring meetings. Supports USD, EUR, GBP, TRY. Free, client-side, no signup.

🤔

Create classic memes with Impact-style text on Canvas. Upload your own image up to 10MB or pick from 6 templates. Customize text, font, color, outline, then export as PNG or copy to clipboard. Free, no sign-up, no watermark.

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Meta Tag & SERP Preview Generator

Preview Google search results and social cards. Generate meta tags with live SERP simulator. Free SEO tool.

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Meta Tag Generator

Generate SEO meta, Open Graph, Twitter Card tags.

🎵

Metronome

Precise rhythm tool for musicians. No subscription paywalls.

💣

Minesweeper

Classic minesweeper. 3 difficulty levels. Flag, reveal, win.

🔊

Morse Code Translator

Encode text to Morse code and decode Morse back to text. Play as audio tones. International ITU standard.

📛

Name Generator

Generate unique names for characters, babies, and brands. 7 categories: fantasy, modern, medieval, sci-fi, Nordic, Japanese, Arabic. Gender filters. Free, no sign-up.

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Number Base Converter

Binary, octal, decimal, hex. Real-time conversion.

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Number to Words Converter

Convert numbers to words in 8 languages: English, Turkish, German, French, Spanish, Arabic, Hindi, Chinese.

🖼️

Online Whiteboard

Free online whiteboard drawing tool. Draw freehand, create shapes, add text, and export as PNG or editable SVG. Zero dependencies, no sign-up, all data stays in your browser.

👁️

Open Graph Preview

Social media link preview. Facebook, Twitter, LinkedIn.

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OpenAPI/Swagger Viewer

Parse OpenAPI 3.x and Swagger 2.0 specs into a collapsible tree. Color-coded HTTP method badges. 100% client-side.

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PDF Merge

Combine multiple PDFs into one. Drag-and-drop, reorder, instant download.

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PDF Split

Split PDFs by page range. Extract individual pages or ranges.

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PDF to Image

Convert PDF pages to PNG, JPG, or WebP images. High quality.

🏃

Pace & Running Calculator

Running pace, time, distance. 5K, 10K, marathon splits.

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Password Generator

Generate strong, random passwords. Configurable length.

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Password Strength Checker

Entropy score, crack time, improvement tips.

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Percentage Calculator

Quick percentage calculations — find % of, what %, % change, reverse %. Free, no signup.

👾

Pixel Art Maker

Draw pixel art on a customizable grid. 24-color palette, 3 grid sizes, click-and-drag drawing, and PNG export. Free, no sign-up.

✅

Pomodoro + Task Tracker

Pomodoro timer + task list. Progress tracking.

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Pomodoro Timer

Focus timer with clean design. No ads interrupting your flow.

👶

Pregnancy Due Date Calculator

Estimate your due date instantly. No sign-ups.

📱

QR Code Generator & Scanner

Create and scan QR codes instantly. No app needed.

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Reaction Time Test

Test your reflexes. High-precision timing via performance.now().

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Readability Score Checker

Flesch-Kincaid score, grade level, word statistics.

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Redirect Checker

Trace redirect chains. See each hop with status codes and final destination. Free SEO tool.

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Regex Explainer

Translate regex to human language. Token-by-token explanation.

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Regex Tester

Test regex in real-time. Highlight matches, groups.

👴

Retirement Calculator

Estimate retirement fund and monthly income. 4% rule, growth chart.

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Robots.txt Generator

Generate robots.txt. Allow/block crawlers.

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Robots.txt Tester

Test any URL against robots.txt rules. Check which pages Googlebot and Bingbot can crawl. Free SEO tool.

🏛️

Roman Numeral Converter

Convert numbers to Roman numerals and back.

🔎

SERP Preview Tool

Google SERP preview. Title 60, description 160 chars.

🗄️

SQL Formatter

Format SQL. MySQL, PostgreSQL, SQLite. Beautify/minify.

🗄️

SQL to JSON Converter

Convert SQL CREATE TABLE + INSERT to JSON. Multi-dialect, big-int safe.

🔑

SSH Key Generator

Generate SSH key pairs. RSA, ECDSA. PEM format.

📜

SSL Certificate Decoder

Decode SSL/X.509 certificates. View Subject, Issuer, Validity, Fingerprint, Public Key. Free developer tool.

📐

SVG Optimizer

Minify and clean SVG code. Remove metadata, comments, whitespace.

🐖

Savings Calculator

Future value of savings. Compound growth with Chart.js visualization.

🏗️

Schema Markup Generator

Generate JSON-LD schema. Organization, Product, FAQ, Article, more.

🧮

Scientific Calculator

Trig, log, sqrt, power. Expression input with history.

✍️

Signature Generator

Create a beautiful handwritten signature. Download as PNG.

🗺️

Sitemap Validator

Validate XML sitemaps. Check format, count URLs, detect errors. Supports sitemap index files.

💬

Slack Link Preview

Preview how your link unfurls in Slack. Compact card with colored sidebar, thumbnail, and description. Free unfurl preview.

🌙

Sleep Sounds & White Noise

Mix rain, fire, ocean, and white noise. Fall asleep faster.

🐍

Snake Game

Classic snake game. Eat, grow, beat your high score.

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Spirit Level

Use your phone as a bubble level. Perfect for hanging pictures.

⏱️

Stopwatch

Online stopwatch with lap timing. Millisecond precision.

🌅

Sunrise & Sunset Calculator

Calculate sunrise, sunset, golden hour and blue hour for any city. Pure client-side astronomy — no sign-up.

🌡️

Temperature Tracker

Track body temp. Chart, CSV export. Fever alerts.

📝

Text Diff Checker

Compare two texts side by side. Color-coded LCS diff.

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Text Encryptor / Decryptor

AES-256-GCM encryption. Password-protected messages.

🔊

Text to Speech Converter

Convert text to speech using built-in browser voice synthesis. 100K characters, rate & pitch sliders, .txt upload.

📖

Thesaurus & Synonym Finder

Find synonyms, antonyms, and related words instantly. Real-time lookup with similarity scores and part-of-speech labels. Free, no sign-up.

🌐

Time Zone Converter

Convert time between any two IANA time zones. Meeting planner mode finds overlapping business hours. EST→IST, UTC→Tokyo, instant, no signup.

💵

Tip Calculator

Calculate tips and split bills. Works worldwide.

📊

Trade Risk & Break-Even Calc

Break-even price with commission. BIST, Binance presets.

🐦

Twitter Card Preview

Preview how your page appears as a Twitter Card. Fetch meta tags and see summary_large_image layout instantly.

⌨️

Typing Speed Test

Test your typing speed with live WPM, accuracy, and a visual keyboard. Multiple difficulty modes, timed tests, and shareable results. Free, no signup.

🔗

URL Encoder & Decoder

Encode/decode URL strings. Percent-encoding tool.

🔗

URL Slug Generator

Convert text to clean, SEO-friendly URL slugs. Handles special characters and accents — hyphen-separated, lowercase. Free SEO tool.

📊

UTM Builder

Build UTM campaign URLs. Source, medium, campaign.

🆔

UUID Generator

Generate UUID v4 identifiers. Browser crypto API.

📏

Unit Converter

Length, weight, temp, area, volume, speed. All in one.

🕐

Unix Timestamp Converter

Convert Unix timestamps to dates and back. Bidirectional.

🎯

Venn Diagram Maker

Create beautiful 2-circle and 3-circle Venn diagrams. Customize colors, labels, and intersection text. Export as SVG or PNG. Free, no sign-up.

🎬

Video Hook & Script Timer

Calculate video duration from script. WPM slider, hook detection.

🎬

Video to GIF Converter

Convert video to animated GIF in your browser. Trim, set frame rate, adjust quality — all client-side with zero uploads. Supports MP4, WebM, MOV.

💧

Water Intake Calculator

Daily water needs based on weight, activity, climate.

🌐

What Is My IP Address

Check your public IPv4 & IPv6, ISP, and location instantly.

📝

Word & Character Counter

Count words, characters, sentences, and reading time.

🟩

Wordle Solver

Wordle solver. Letter filtering, 2000+ words.

🌍

World Clock

Track time across multiple cities. Search, add city clocks. Day/night indicators, UTC offsets. Free world clock.

📄

XML Formatter & Validator

Format & validate XML. DOMParser error detection.

📋

XML to CSV Converter

Convert XML to CSV with auto-detection of repeated records and dot-notation nested flattening. Browser-based, zero data leakage.

🔄

XML ↔ JSON Converter

Bidirectional XML ↔ JSON conversion. Recursive mapping.

🔍

XPath Tester & Evaluator

Test and evaluate XPath expressions against XML documents instantly. Query XML nodes with XPath 1.0, view results with generated paths. Free, browser-based, zero-dependency.

📜

XSD Generator & Validator

Generate XSD schema from XML, or validate XML against XSD. Zero-dependency, browser-based.

📄

YAML Validator

Validate YAML, convert to JSON. Error line detection.

📋

YouTube Title & Tag Generator

Generate YouTube titles and tags from keywords.

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cURL to Code Converter

Convert curl commands to Python, Node.js, and Java code. Parse -X, -H, -d flags. Free developer tool.

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