All 143 Free Tools — Complete NexVaani Directory
Every tool on this site, grouped by category. All free forever, no sign-up, zero server uploads.
AI & Neural Tools (18)
AI Text to SpeechConvert text to natural speech audio in your browser using neural voice synthesis with pit…AI Chat AssistantChat with an in-browser AI assistant for coding solutions, document summaries, and calcula…AI Image & DALL-E StudioGenerate ultra-detailed prompts for Midjourney v6, DALL-E 3, and Stable Diffusion with lig…AI Content & Headline WriterGenerate high-CTR headlines, viral video hooks, blog outlines, and cold email copy in seco…AI Grammar & Readability CheckerAnalyze spelling, grammar errors, wordiness, and Flesch readability grade in your browser …AI Code & SQL GeneratorGenerate clean TypeScript, JavaScript, Python, SQL, and HTML/CSS snippets for algorithms a…AI Text HumanizerHumanize ChatGPT and AI-generated text, remove robotic clichés, and enhance natural senten…AI Resume Bullet BuilderGenerate high-impact resume bullets using the Google XYZ formula with quantifiable metrics…AI YouTube Viral Script StudioGenerate high-retention YouTube scripts, 3-second opening hooks, and high-CTR thumbnail pr…AI Viral Hashtag StudioGenerate targeted hashtag clusters and engaging captions for Instagram, TikTok, Twitter, a…AI Email Subject Line TesterGenerate high-converting email subject lines with simulated open rate potential and spam t…AI Regex & Query SynthesizerGenerate regular expressions from plain English descriptions with live interactive test st…AI Paraphraser & Sentence RewriterParaphrase essays, rewrite articles, and enhance sentence fluency in 4 writing styles with…AI Social Bio GeneratorGenerate high-converting, aesthetic bios for Instagram, Twitter (𝕏), and LinkedIn with ze…AI Cold Email & Pitch GeneratorGenerate personalized B2B cold email templates and sales pitches using AIDA and PAS framew…AI Meeting Notes SummarizerExtract executive summaries, key decisions, and assigned action item checklists from meeti…AI Job Cover Letter GeneratorGenerate compelling, tailored 3-paragraph job application cover letters customized for any…TranslatorTranslate text between 20+ languages instantly with a free open translation API — no signu…
Calculators & Converters (33)
Percentage CalculatorCalculate percentages, percentage increase/decrease, and percentage differences with PDF s…Percentage Increase CalculatorCalculate percentage growth, salary increments, price markups, and relative decline with f…Discount CalculatorCalculate final sale prices, discount amounts, and savings with optional sales tax inclusi…Loan EMI CalculatorCalculate monthly loan EMI payments, total interest payable, and full yearly amortization …Mortgage CalculatorCalculate monthly mortgage payments including principal, interest, property taxes, and hom…ROI CalculatorCalculate Return on Investment (ROI), total net profit, and investment efficiency percenta…Compound Interest CalculatorCalculate compound interest growth, future investment values, and monthly contribution yie…Salary to Hourly CalculatorConvert annual salary to hourly wage, monthly pay, bi-weekly paychecks, and daily rates.…Sales Tax CalculatorCalculate total sales tax, final checkout prices, or reverse calculate pre-tax amounts fro…Margin & Markup CalculatorCalculate gross profit margin, markup percentage, cost of goods, and selling revenue price…Currency ConverterConvert global currencies with indicative exchange rates and instant conversion tables.…Profit Margin CalculatorCalculate gross profit margin, markup percentage, revenue, and net profit from unit cost a…Inflation CalculatorCalculate the erosion of purchasing power and future equivalent value of money based on in…Tip & Bill Split CalculatorCalculate restaurant gratuity (15%, 18%, 20%, 25%) and split the total bill evenly among f…Fuel Cost CalculatorCalculate total gasoline expense, fuel consumption (liters/gallons), and per-passenger tra…BMI Health CalculatorCalculate Body Mass Index (BMI) for adults with metric and imperial units, WHO weight cate…Time Duration CalculatorCalculate elapsed hours, minutes, and days between two times or calendar dates with work h…Universal Unit ConverterConvert between metric and imperial units for length, weight, temperature, area, volume, s…Length & Distance ConverterConvert length and distance between centimeters, meters, kilometers, inches, feet, yards, …Weight & Mass ConverterConvert weight and mass between kilograms, grams, milligrams, pounds, ounces, stone, and m…Temperature ConverterConvert temperature scales between Celsius (°C), Fahrenheit (°F), and Kelvin (K) with inst…Random Number GeneratorGenerate random numbers, rolls, and sequences between any min and max values using Web Cry…SIP Investment CalculatorCalculate maturity wealth, invested capital, and compounding returns for monthly mutual fu…GST Tax CalculatorCalculate GST amounts (3%, 5%, 12%, 18%, 28%) with forward/reverse calculation and CGST/SG…Loan Prepayment CalculatorCalculate total interest saved and tenure reduction when making extra monthly or yearly lu…Retirement & FIRE Corpus CalculatorCalculate target retirement nest egg and required monthly SIP investment adjusted for infl…Home Loan + SIP Recovery CalculatorCalculate how a small monthly SIP investment completely covers and recovers 100% of your h…Pregnancy Due Date CalculatorCalculate pregnancy due date from last period, current week, trimester and key scan milest…Numerology CalculatorCalculate your life path, birthday and expression numbers from date of birth and name, wit…PayPal Link GeneratorBuild PayPal.me payment links with amount and currency pre-filled for invoices, tips and s…Age CalculatorCalculate exact age in years, months and days from date of birth, plus total days lived an…Date Difference CalculatorFind exact days, weeks, months and working days between any two dates — deadlines, visas a…Wheel of DecisionSpin a customizable decision wheel with your own options — fair crypto-random picks for cl…
Developer & Web Tools (1)
Developer Utilities (31)
JSON Formatter & ValidatorFormat, validate, beautify, and inspect JSON data with syntax highlighting and tree view.…JSON ValidatorValidate JSON syntax in real-time with line-by-line error messages and structure verificat…CSV to JSON ConverterConvert CSV spreadsheets and Excel data into formatted JSON arrays and nested objects offl…Base64 Encoder & DecoderEncode UTF-8 strings to Base64 or decode Base64 data into clean text with browser-based lo…Hash Generator (SHA-256, MD5)Generate cryptographic hashes (SHA-256, SHA-512, SHA-1, MD5) directly inside your browser.…JWT Token DecoderDecode and inspect JSON Web Tokens (JWT) headers, payloads, and claims offline in your bro…JSON to CSV ConverterConvert JSON arrays and nested objects into tabular CSV spreadsheet files for Excel and Go…UUID / GUID GeneratorGenerate cryptographically random RFC 4122 Version 4 UUIDs and GUIDs individually or in bu…Text & Code Diff CheckerCompare two text snippets or code files side-by-side to highlight additions, deletions, an…Regular Expression TesterTest and debug JavaScript regular expressions in real time with syntax highlighting and ma…Color Picker & Palette GeneratorInspect, convert, and harmonize colors across HEX, RGB, HSL, and CMYK formats with WCAG co…HTML Minifier & BeautifierMinify HTML markup by removing whitespace, comments, and line breaks to accelerate web pag…CSS MinifierMinify CSS code by stripping whitespace, comments, and redundant semicolons to boost page …JavaScript MinifierMinify and compress JavaScript source code in your browser to reduce script payload sizes.…QR Code Scanner & ReaderScan and decode QR codes instantly using your device webcam or by uploading image files.…Secure Password GeneratorGenerate strong, high-entropy cryptographic passwords with custom length, symbols, and num…My IP Address CheckerCheck your public IPv4/IPv6 address, ISP, location, and browser connection details instant…Number Base ConverterConvert numbers across Binary (Base 2), Octal (Base 8), Decimal (Base 10), and Hexadecimal…HTML Entity Encoder & DecoderEncode special characters into HTML entities and decode HTML entities back to raw text.…URL Encoder & DecoderEncode strings into percent-encoded URL formats (encodeURIComponent) and decode percent-en…Digital Signature GeneratorDraw digital signatures or generate stylish cursive calligraphy with transparent PNG downl…JSON to CSV & CSV to JSON ConverterConvert JSON arrays to tabular CSV spreadsheets and CSV files back to JSON with syntax val…Ping TestTest website latency and response time from your browser with 5-sample ping, jitter and st…SSL Certificate CheckerCheck any domain's SSL certificate: issuer, validity dates, expiry countdown and all cover…Barcode ReaderScan barcodes and QR codes from any image instantly using the browser's native decoder — n…URL ParserBreak any URL into protocol, host, port, path, hash and a decoded table of every query par…User Agent ParserDecode any User-Agent string into browser, engine, OS and device type — and see your own i…Unix Timestamp to DateConvert Unix epoch seconds or milliseconds to readable UTC, local and ISO dates with relat…Date to Unix TimestampConvert any calendar date and time into Unix epoch seconds and milliseconds, local or UTC.…DNS LookupQuery A, AAAA, MX, TXT, NS, CNAME and SOA records for any domain via Google Public DNS.…Gravatar CheckerCheck if any email has a Gravatar, preview the avatar and copy its direct image URL instan…
File, Text & Data Tools (16)
Word & Character CounterAnalyze text statistics: word count, character count, sentences, paragraphs, and reading t…Case ConverterConvert text case: UPPERCASE, lowercase, Title Case, Sentence case, camelCase, and snake_c…Lorem Ipsum GeneratorGenerate customizable placeholder Latin dummy text by paragraphs, sentences, words, or lis…Duplicate Line RemoverRemove duplicate lines, trim whitespace, remove empty rows, and sort lists alphabetically …Character CounterCount characters with and without spaces, words, sentences, and paragraphs for social medi…Text SummarizerSummarize long articles, essays, and reports into concise key takeaways using browser-base…Markdown to HTML ConverterConvert GitHub Flavored Markdown (GFM) into clean HTML markup with live visual preview and…Text & String ReverserReverse text character-by-character, word-by-word, or line-by-line with instant 1-click tr…CSV Delimiter ConverterChange delimiters in CSV and spreadsheet files between Comma (,), Semicolon (;), Tab (\t),…Email ExtractorExtract, dedupe and count every email address from any pasted text, CSV or log instantly —…URL ExtractorPull every http/https link out of any text, HTML or log file with automatic cleanup and de…Text SeparatorSplit messy text into clean lines by comma, pipe, tab or any custom delimiter with trim, s…HTML Tags RemoverStrip all HTML tags, scripts and styles from pasted markup and get clean plain text with d…BBCode to HTML ConverterConvert forum BBCode — [b], [url], [img], [quote], [list] — into clean, safe HTML with a l…Fancy Text GeneratorConvert text into 14 stylish Unicode fonts — bold, cursive, bubble, strikethrough — for In…Timetable MakerBuild a printable weekly timetable or class schedule that auto-saves in your browser — no …
Image & Photo Tools (1)
Image Tools (19)
JPG Image CompressorCompress JPG and JPEG photos toward 20KB, 50KB, 100KB, or custom target sizes with quality…Image ResizerResize image dimensions in pixels, percentage, or centimeters with aspect ratio locking.…HEIC to JPG ConverterConvert Apple iPhone .HEIC and .HEIF photos into standard high-quality JPG format offline.…WebP to JPG ConverterConvert modern Google .WebP images into universally compatible .JPG format offline.…Favicon GeneratorGenerate complete multi-size favicon packages (16x16, 32x32, 180x180, 512x512) and HTML co…Image to Text (OCR)Extract text from photos, scanned receipts, book pages, and documents locally in your brow…AI Background RemoverRemove image backgrounds and create transparent PNG cutouts locally in your browser with z…Passport & Visa Photo MakerCrop and align headshots for US, Indian, Schengen, and UK passport requirements with print…Image Color Inverter & GrayscaleInvert image colors into dark negatives, convert photos to black and white grayscale, or a…JPG & PNG to WebP ConverterConvert JPG, PNG, and GIF images to modern Next-Gen WebP format with custom compression qu…Circular Image & Avatar CropperCrop photos into perfect circular avatars with custom stroke borders and transparent PNG b…WhatsApp Sticker MakerTurn any photo into a 512×512 WhatsApp sticker with optional caption bar — free, in-browse…WhatsApp Status ResizerResize any photo to 1080×1920 WhatsApp/Instagram status size with a stylish blurred-fill b…Video CompressorCompress MP4/WebM videos with FFmpeg WebAssembly entirely in your browser — the only zero-…MP3 CutterCut any audio clip to exact start/end seconds and export as MP3 or WAV — ringtone maker, n…EXIF ReaderRead hidden EXIF metadata from any photo: camera, lens, settings, GPS coordinates, date ta…Color Palette GeneratorGenerate complementary, triadic and tetradic color schemes plus tints, shades and CSS vari…DPI ConverterConvert any image to 300 DPI (or any DPI) at exact print sizes — passport photos, forms an…YouTube Thumbnail DownloaderGrab any YouTube video thumbnail in full HD (maxres, sd, hq, mq) from just the video URL.…
PDF & Document Tools (12)
PDF CompressorFree, private browser-based PDF compressor. Reduce PDF file size toward a target KB or MB …JPG to PDF ConverterMerge multiple JPG, PNG, and WebP images into a single clean PDF document offline in your …PDF to JPG ConverterExtract every PDF page into high-resolution JPG images directly inside your browser.…PDF Page ExtractorSelect, split, and extract specific pages from any PDF document into a new standalone PDF.…PDF Page DeleterDelete unwanted, blank, or duplicate pages from any PDF document with 1-click visual selec…PDF Page RotatorPermanently rotate upside-down or sideways PDF pages 90, 180, or 270 degrees clockwise.…PDF Merge & CombineCombine multiple PDF documents into a single organized file with drag & drop page reorderi…PDF Password ProtectEncrypt PDF documents with strong AES passwords directly in your browser with zero server …PDF Page OrganizerVisually reorder, rotate, and delete PDF pages in an interactive grid with zero server upl…Text to PDF ConverterConvert text notes, essays, and contracts into formatted vector PDF documents with custom …PDF to Excel / CSV ExtractorExtract tables and tabular text from PDF documents into structured Excel CSV spreadsheets …PDF Sign & PlaceDraw your signature, stamp it onto any PDF page and download — real PDF objects via pdf-li…
PDF & Document Utilities (1)
SEO & Webmaster Tools (11)
QR Code GeneratorCreate customizable high-resolution QR codes for websites, Wi-Fi networks, text, and vCard…Meta Tag & Open Graph GeneratorGenerate complete HTML SEO meta tags, OpenGraph social cards, and Twitter Cards with live …Robots.txt GeneratorGenerate compliant robots.txt directives for Googlebot, Bingbot, and AI crawlers with cust…Open Graph Meta Tag GeneratorGenerate rich Open Graph and Twitter Card social meta tags with live social preview card.…Keyword Density AnalyzerAnalyze word frequency, 1-word, 2-word, and 3-word keyword density percentages to prevent …AI Meta Description GeneratorGenerate high-CTR Google meta descriptions (150-160 chars) with live desktop & mobile SERP…Slug GeneratorTurn any title into a clean, lowercase, hyphenated SEO-friendly URL slug with accent trans…Mailto Link GeneratorBuild mailto: links with pre-filled subject and body, plus ready-to-paste HTML anchor code…UTM Link GeneratorAppend all five UTM campaign parameters to any URL with correct encoding and existing-quer…WhatsApp Link GeneratorCreate wa.me click-to-chat links with a pre-filled message for support, sales and group sh…YouTube Timestamp Link GeneratorCreate YouTube links that open at an exact second — perfect for sharing the best moment of…