All Free Online Tools
Explore our growing library of 121+ specialized tools built for speed, simplicity, and efficiency.
All Available Tools96
Word Counter
Count words, characters, sentences, paragraphs, reading time, and keyword frequency instantly in your browser.
Text Case Converter
Convert text to uppercase, lowercase, title case, sentence case, alternating case, or inverse case instantly.
Lorem Ipsum Generator
Generate Lorem Ipsum placeholder text by paragraph, sentence, or word count for layouts, mockups, and prototypes.
JSON Formatter
Clean, format, and validate your JSON data instantly.
Base64 Encoder / Decoder
Encode and decode data using Base64 encoding scheme.
Meta Tag Generator
Generate high-quality meta tags for better SEO rankings.
Password Generator
Create strong, random, and secure passwords instantly.
QR Code Generator
Generate QR codes instantly for URLs, text, WiFi, email, phone numbers, and more. Free, fast, private, and fully in-browser with no signup required.
Duplicate Line Remover
Remove duplicate lines from lists, emails, keywords, CSV rows, logs, or pasted text with useful cleanup options.
Text Reverser
Reverse characters, words, sentences, or line order instantly for puzzles, testing, and creative text effects.
Character Counter
Count characters, words, lines, and paragraphs while checking common social, SEO, SMS, and writing limits.
Text Diff Checker
Compare two text blocks and highlight additions, deletions, and unchanged content in a clear diff view.
Markdown to HTML
Convert Markdown code into clean, production-ready HTML instantly with a live preview.
HTML to Markdown
Convert HTML source code back into clean, readable Markdown syntax instantly.
Text to Speech (TTS)
Listen to any text read aloud using your browser's native speech synthesis.
Sentence Counter & Analyzer
Count sentences and get deep linguistic insights like average sentence length.
Remove Duplicate Words
Instantly filter out duplicate words from a list or paragraph to extract unique keywords.
Find and Replace
Advanced find and replace tool with support for Regular Expressions (Regex).
Text Sorter
Quickly sort lists and text blocks alphabetically or numerically.
Unicode Converter
Convert text to Unicode escape sequences and vice versa.
URL Encoder/Decoder
Securely encode and decode URLs and data strings.
MD5 Hash Generator
Generate secure MD5 cryptographic hashes for any text.
Regex Tester
Test and debug your Regular Expressions in real-time.
SQL Formatter
Format and beautify your SQL queries instantly.
CSS Minifier
Minify CSS files instantly by stripping comments and unnecessary whitespace.
HTML Minifier
Minify HTML by removing comments and extra spaces to optimize loading times.
JavaScript Minifier
Lightweight JS minifier that strips comments and collapses whitespace.
JSON Diff Checker
Compare two JSON objects and view the differences with a unified text diff.
YAML to JSON
Convert YAML to JSON and vice versa instantly as you type.
JWT Decoder
Decode and inspect JWT tokens securely. Check payload claims and expiration.
Cron Expression Builder
Visual cron expression editor that translates cron syntax into plain English.
HTML Entity Encoder
Live-typing HTML entity encoder and decoder with a quick reference table.
Robots.txt Generator
Create a robots.txt file to guide search engine crawlers.
SERP Preview Tool
Visualize how your page appears in Google Search results.
Keyword Density Checker
Check word frequency and keyword density to review content focus, repetition, and SEO readability.
WHOIS Lookup
Look up domain registration details, ownership info, expiry dates, nameservers, and registrar data for any domain name instantly.
DNS Lookup
Check DNS records (A, MX, CNAME, TXT) for any host.
Domain Age Checker
Discover the original registration date of any website.
UUID Generator
Generate unique version 4 UUIDs (Universally Unique IDs).
Image to Base64
Convert any image into a Base64 data string.
Image Resizer
Quickly resize images to exact pixel dimensions securely in your browser.
Image Compressor
Compress image file sizes without noticeable quality loss to improve web performance.
Image Format Converter
Instantly convert images between PNG, JPEG, and WebP formats.
Image Color Picker
Click anywhere on an uploaded image to extract the exact HEX and RGB color codes.
Image to Text (OCR)
Extract text from images using browser-based Optical Character Recognition (OCR).
Favicon Generator
Generate a complete set of favicons for web, iOS, and Android from a single logo.
SVG Optimizer
Clean and minify SVG files to reduce their payload size for web use.
Image Metadata Viewer
Extract and view hidden EXIF data, including camera settings and GPS coordinates, from uploaded images.
Screenshot to PDF
Combine multiple screenshots or images into a single, structured PDF document.
Placeholder Image Generator
Generate custom placeholder images for web design mockups and wireframes.
PDF Text Extractor
Extract all readable text from any PDF file instantly and privately.
PDF Page Counter
Instantly count the number of pages in any PDF file privately and securely.
PDF Merge
Combine multiple PDF files into a single document instantly and privately.
PDF to Image
Convert PDF pages into high-quality PNG or JPG images instantly and privately.
PDF Split
Split a PDF into multiple files or extract specific pages instantly and privately.
PDF Password Remover
Remove passwords and restrictions from your PDF files instantly and privately.
PDF Password Protector
Add password encryption to secure your PDF files instantly and privately.
PDF Watermark
Add custom text or image watermarks to your PDF pages instantly and privately.
PDF Rotate
Rotate PDF pages by 90, 180, or 270 degrees instantly and privately.
PDF Metadata Editor
View and edit PDF title, author, and other hidden metadata instantly and privately.
Percentage Calculator
Calculate percentage of a number, percentage change, what percent X is of Y, and work backward from a percentage — all in one tool.
Loan Calculator
Calculate monthly EMI, total interest paid, and view a full month-by-month amortization schedule for any loan.
Investment Calculator
Calculate compound interest returns for lump-sum or monthly SIP investments with a year-by-year growth chart, wealth breakdown, and Rule of 72 insight.
Age Calculator
Find your exact age in years, months, days, weeks, and total hours from any date, with a next birthday countdown.
Unix Timestamp Converter
Convert Unix timestamps to human-readable dates and back. Supports seconds and milliseconds with a live Unix timestamp clock.
Number Base Converter
Convert any number between binary, octal, decimal, and hexadecimal bases instantly with input validation and one-click copy.
BMI Calculator
Calculate your Body Mass Index in metric or imperial units with a visual gauge, BMI category, and healthy weight range.
Aspect Ratio Calculator
Calculate width, height, or ratio from any two values. Supports common presets like 16:9, 4:3, and 1:1 with a visual preview.
Color Contrast Calculator
Check foreground and background color contrast ratios against WCAG AA and AAA accessibility standards with a live preview.
Open Graph Preview
See exactly how your page appears when shared on Facebook, X/Twitter, and LinkedIn — before you publish. Test and generate your OG meta tags in your browser.
Canonical Tag Generator
Build correct canonical link tags to prevent duplicate content penalties. Strip query strings, trailing slashes, and force HTTPS — all in your browser.
Schema Markup Generator
Build Google-compliant JSON-LD schema markup for 8 major categories to secure rich snippets and boost CTR.
Hreflang Tag Generator
Build valid hreflang alternate tags for multilingual and multi-regional websites. Choose from 50+ BCP 47 locale codes, get HTML and XML sitemap output — all client-side.
UTM Link Builder
Create tracking URLs with UTM parameters to measure marketing campaigns in Google Analytics.
Keyword Extractor
Pull top keywords and 1–3 word phrases from any text. Get frequency counts, density percentages, and CSV export — all client-side, no account needed.
Random String Generator
Generate cryptographically secure random strings and tokens entirely in the browser using the Web Crypto API.
Caesar Cipher
Encode and decode text using the classic Caesar shift cipher with a dynamic rotating alphabet wheel.
Color Picker
Visual HEX/RGB/HSL color picker with sliders, history, and one-click copy.
Color Palette Generator
Generate 5-color palettes using 6 harmony modes. Export as CSS vars, Tailwind, or JSON.
CSS Gradient Generator
Visual CSS gradient builder with multi-stop editor, presets, and instant CSS copy.
Color Name Finder
Enter a HEX code and instantly find the closest CSS color name.
Tint and Shade Generator
Generate tints and shades of any color and export as CSS vars or Tailwind scale.
Color Blindness Simulator
Simulate Protanopia, Deuteranopia, Tritanopia, and Achromatopsia on colors and images.
CSS Color Converter
Convert any color between HEX, RGB, HSL, CMYK, HWB and more. Copy each format.
Random Color Generator
Generate 5 random high-quality colors. Lock favorites, press Space to refresh.
GST / VAT Calculator
Add or remove GST/VAT from any amount.
Scientific Calculator
Full scientific calculator with history.
Margin Calculator
Calculate gross margin, markup, and profit.
ROI Calculator
Calculate Return on Investment percentage.
Readability Analyzer
Calculate five readability scores (Flesch-Kincaid, Gunning Fog, Coleman-Liau, ARI) instantly. See the grade level and audience your writing targets — all client-side.
Passive Voice Detector
Highlight passive voice constructions in your text, measure your passive rate, and get guidance on which sentences to rewrite. Fully client-side, no sign-up.
Essay Word Counter
Real-time word, character, sentence, and paragraph counter with academic target tracking, reading time, and speaking time estimates.
Headline Analyzer
Score your headlines 0–100 for SEO and click potential. Analyzes power words, emotional words, character length, and word balance — instantly in your browser.
Citation Generator
Generate APA 7th, MLA 9th, and Chicago 17th edition citations for websites, books, journal articles, and newspapers — all in your browser, no account needed.
Markdown Table Generator
Build formatted Markdown tables visually with an interactive spreadsheet editor and CSV importer.
Blog Outline Generator
Get a complete H1/H2/H3 blog outline in seconds. Choose from 4 content styles (how-to, listicle, comparison, educational), target audience, and word count. Fully client-side.
Upcoming Features
We are constantly expanding FluxToolkit. Here are some of the tools currently in development. Our mission is to build the most comprehensive, privacy-first toolkit for the modern web.
PDF Compressor
Reduce PDF file size without sacrificing quality instantly and privately.
PDF to Word
Convert PDF documents to editable .docx format instantly and privately.
XML Sitemap Generator
Generate an XML sitemap from a list of URLs.
HTTP Headers Checker
View HTTP response headers for any URL.
Redirect Checker
Trace URL redirects and check status codes.
IP Lookup
Find geolocation and ISP for any IP address.
SSL Certificate Checker
Check SSL certificate validity and expiry.
Ping Tool
Check if a website is up and measure response time.
Suggest a New Tool?
Is there a utility you use daily that we should build next?