100% 免费、保护隐私的在线工具。 本地运行 • 零服务器上传。
所有 PDF 压缩、图片转换与计算均直接在您的浏览器本地执行，文件绝不上传至任何服务器。
Drop Anything Here
Drag & Drop ANY File here (PDF, JPG, HEIC, WebP, JSON, CSV) — our smart engine will auto-detect its type and suggest relevant tools!
NexVaani Tools (全部工具)
100% Free & PrivatePDF Compressor
Free, private browser-based PDF compressor. Reduce PDF file size toward a target KB or MB with zero file server uploads and no watermarks.
JPG to PDF Converter
Merge multiple JPG, PNG, and WebP images into a single clean PDF document offline in your browser.
PDF to JPG Converter
Extract every PDF page into high-resolution JPG images directly inside your browser.
PDF Page Extractor
Select, split, and extract specific pages from any PDF document into a new standalone PDF.
PDF Page Deleter
Delete unwanted, blank, or duplicate pages from any PDF document with 1-click visual selection.
PDF Page Rotator
Permanently rotate upside-down or sideways PDF pages 90, 180, or 270 degrees clockwise.
JPG Image Compressor
Compress JPG and JPEG photos toward 20KB, 50KB, 100KB, or custom target sizes with quality tuning.
Image Resizer
Resize image dimensions in pixels, percentage, or centimeters with aspect ratio locking.
HEIC to JPG Converter
Convert Apple iPhone .HEIC and .HEIF photos into standard high-quality JPG format offline.
WebP to JPG Converter
Convert modern Google .WebP images into universally compatible .JPG format offline.
Favicon Generator
Generate complete multi-size favicon packages (16x16, 32x32, 180x180, 512x512) and HTML code.
Percentage Calculator
Calculate percentages, percentage increase/decrease, and percentage differences with PDF summary reports.
Percentage Increase Calculator
Calculate percentage growth, salary increments, price markups, and relative decline with full formulas.
Discount Calculator
Calculate final sale prices, discount amounts, and savings with optional sales tax inclusion.
Loan EMI Calculator
Calculate monthly loan EMI payments, total interest payable, and full yearly amortization schedules.
Mortgage Calculator
Calculate monthly mortgage payments including principal, interest, property taxes, and home insurance.
ROI Calculator
Calculate Return on Investment (ROI), total net profit, and investment efficiency percentages.
Compound Interest Calculator
Calculate compound interest growth, future investment values, and monthly contribution yields.
Salary to Hourly Calculator
Convert annual salary to hourly wage, monthly pay, bi-weekly paychecks, and daily rates.
Sales Tax Calculator
Calculate total sales tax, final checkout prices, or reverse calculate pre-tax amounts from gross totals.
Margin & Markup Calculator
Calculate gross profit margin, markup percentage, cost of goods, and selling revenue prices.
Currency Converter
Convert global currencies with indicative exchange rates and instant conversion tables.
JSON Formatter & Validator
Format, validate, beautify, and inspect JSON data with syntax highlighting and tree view.
JSON Validator
Validate JSON syntax in real-time with line-by-line error messages and structure verification.
CSV to JSON Converter
Convert CSV spreadsheets and Excel data into formatted JSON arrays and nested objects offline.
Base64 Encoder & Decoder
Encode UTF-8 strings to Base64 or decode Base64 data into clean text with browser-based local processing.
Hash Generator (SHA-256, MD5)
Generate cryptographic hashes (SHA-256, SHA-512, SHA-1, MD5) directly inside your browser.
JWT Token Decoder
Decode and inspect JSON Web Tokens (JWT) headers, payloads, and claims offline in your browser.
Word & Character Counter
Analyze text statistics: word count, character count, sentences, paragraphs, and reading time.
Case Converter
Convert text case: UPPERCASE, lowercase, Title Case, Sentence case, camelCase, and snake_case.
QR Code Generator
Create customizable high-resolution QR codes for websites, Wi-Fi networks, text, and vCards.
Meta Tag & Open Graph Generator
Generate complete HTML SEO meta tags, OpenGraph social cards, and Twitter Cards with live previews.
Aspect Ratio Calculator
Calculate missing width or height dimensions for images, videos, and UI mockups based on standard aspect ratios.
Profit Margin Calculator
Calculate gross profit margin, markup percentage, revenue, and net profit from unit cost and selling price.
Inflation Calculator
Calculate the erosion of purchasing power and future equivalent value of money based on inflation rates.
Tip & Bill Split Calculator
Calculate restaurant gratuity (15%, 18%, 20%, 25%) and split the total bill evenly among friends.
Fuel Cost Calculator
Calculate total gasoline expense, fuel consumption (liters/gallons), and per-passenger travel costs for road trips.
BMI Health Calculator
Calculate Body Mass Index (BMI) for adults with metric and imperial units, WHO weight categories, and ideal weight targets.
Time Duration Calculator
Calculate elapsed hours, minutes, and days between two times or calendar dates with work hours tracking.
Universal Unit Converter
Convert between metric and imperial units for length, weight, temperature, area, volume, speed, and digital storage.
Length & Distance Converter
Convert length and distance between centimeters, meters, kilometers, inches, feet, yards, and miles.
Weight & Mass Converter
Convert weight and mass between kilograms, grams, milligrams, pounds, ounces, stone, and metric tons.
Temperature Converter
Convert temperature scales between Celsius (°C), Fahrenheit (°F), and Kelvin (K) with instant formula walkthrough.
JSON to CSV Converter
Convert JSON arrays and nested objects into tabular CSV spreadsheet files for Excel and Google Sheets.
UUID / GUID Generator
Generate cryptographically random RFC 4122 Version 4 UUIDs and GUIDs individually or in bulk.
Text & Code Diff Checker
Compare two text snippets or code files side-by-side to highlight additions, deletions, and character modifications.
Regular Expression Tester
Test and debug JavaScript regular expressions in real time with syntax highlighting and match capture groups.
Color Picker & Palette Generator
Inspect, convert, and harmonize colors across HEX, RGB, HSL, and CMYK formats with WCAG contrast checker.
Lorem Ipsum Generator
Generate customizable placeholder Latin dummy text by paragraphs, sentences, words, or lists with HTML tags.
Duplicate Line Remover
Remove duplicate lines, trim whitespace, remove empty rows, and sort lists alphabetically in your browser.
HTML Minifier & Beautifier
Minify HTML markup by removing whitespace, comments, and line breaks to accelerate web page loading.
CSS Minifier
Minify CSS code by stripping whitespace, comments, and redundant semicolons to boost page speed.
JavaScript Minifier
Minify and compress JavaScript source code in your browser to reduce script payload sizes.
QR Code Scanner & Reader
Scan and decode QR codes instantly using your device webcam or by uploading image files.
Robots.txt Generator
Generate compliant robots.txt directives for Googlebot, Bingbot, and AI crawlers with custom crawl rules.
Open Graph Meta Tag Generator
Generate rich Open Graph and Twitter Card social meta tags with live social preview card.
Keyword Density Analyzer
Analyze word frequency, 1-word, 2-word, and 3-word keyword density percentages to prevent keyword stuffing.
Character Counter
Count characters with and without spaces, words, sentences, and paragraphs for social media character limits.
Secure Password Generator
Generate strong, high-entropy cryptographic passwords with custom length, symbols, and numbers locally using Web Crypto API.
Text Summarizer
Summarize long articles, essays, and reports into concise key takeaways using browser-based text extraction.
Markdown to HTML Converter
Convert GitHub Flavored Markdown (GFM) into clean HTML markup with live visual preview and 1-click copy.
Text & String Reverser
Reverse text character-by-character, word-by-word, or line-by-line with instant 1-click transformation.
Random Number Generator
Generate random numbers, rolls, and sequences between any min and max values using Web Crypto API.
My IP Address Checker
Check your public IPv4/IPv6 address, ISP, location, and browser connection details instantly.
Number Base Converter
Convert numbers across Binary (Base 2), Octal (Base 8), Decimal (Base 10), and Hexadecimal (Base 16).
HTML Entity Encoder & Decoder
Encode special characters into HTML entities and decode HTML entities back to raw text.
URL Encoder & Decoder
Encode strings into percent-encoded URL formats (encodeURIComponent) and decode percent-encoded URLs.
CSV Delimiter Converter
Change delimiters in CSV and spreadsheet files between Comma (,), Semicolon (;), Tab (\t), and Pipe (|).
PDF Merge & Combine
Combine multiple PDF documents into a single organized file with drag & drop page reordering and zero server upload.
SIP Investment Calculator
Calculate maturity wealth, invested capital, and compounding returns for monthly mutual fund SIPs with visual charts.
GST Tax Calculator
Calculate GST amounts (3%, 5%, 12%, 18%, 28%) with forward/reverse calculation and CGST/SGST breakdown.
Image to Text (OCR)
Extract text from photos, scanned receipts, book pages, and documents locally in your browser with zero server uploads.
PDF Password Protect
Encrypt PDF documents with strong AES passwords directly in your browser with zero server uploads.
PDF Page Organizer
Visually reorder, rotate, and delete PDF pages in an interactive grid with zero server uploads.
AI Background Remover
Remove image backgrounds and create transparent PNG cutouts locally in your browser with zero server uploads.
Barcode & QR Studio
Generate Code 128 retail barcodes and 2D QR matrix codes with custom SKUs and high-resolution PNG export.
AI Text to Speech
Convert text to natural speech audio in your browser using neural voice synthesis with pitch and rate modulation.
AI Chat Assistant
Chat with an in-browser AI assistant for coding solutions, document summaries, and calculations with zero server logging.
AI Image & DALL-E Studio
Generate ultra-detailed prompts for Midjourney v6, DALL-E 3, and Stable Diffusion with lighting and camera controls.
AI Content & Headline Writer
Generate high-CTR headlines, viral video hooks, blog outlines, and cold email copy in seconds.
AI Grammar & Readability Checker
Analyze spelling, grammar errors, wordiness, and Flesch readability grade in your browser with zero server uploads.
AI Code & SQL Generator
Generate clean TypeScript, JavaScript, Python, SQL, and HTML/CSS snippets for algorithms and web tasks.
AI Text Humanizer
Humanize ChatGPT and AI-generated text, remove robotic clichés, and enhance natural sentence flow with 100% in-browser privacy.
AI Resume Bullet Builder
Generate high-impact resume bullets using the Google XYZ formula with quantifiable metrics and action verbs.
AI YouTube Viral Script Studio
Generate high-retention YouTube scripts, 3-second opening hooks, and high-CTR thumbnail prompts for Shorts and full tutorials.
AI Viral Hashtag Studio
Generate targeted hashtag clusters and engaging captions for Instagram, TikTok, Twitter, and LinkedIn with zero server uploads.
AI Email Subject Line Tester
Generate high-converting email subject lines with simulated open rate potential and spam trigger avoidance.
AI Regex & Query Synthesizer
Generate regular expressions from plain English descriptions with live interactive test string matching in your browser.
Passport & Visa Photo Maker
Crop and align headshots for US, Indian, Schengen, and UK passport requirements with printable 6-photo sheets.
Digital Signature Generator
Draw digital signatures or generate stylish cursive calligraphy with transparent PNG download for PDFs and contracts.
Text to PDF Converter
Convert text notes, essays, and contracts into formatted vector PDF documents with custom margins and font controls.
Image Color Inverter & Grayscale
Invert image colors into dark negatives, convert photos to black and white grayscale, or apply vintage sepia.
PDF to Excel / CSV Extractor
Extract tables and tabular text from PDF documents into structured Excel CSV spreadsheets locally in your browser.
AI Paraphraser & Sentence Rewriter
Paraphrase essays, rewrite articles, and enhance sentence fluency in 4 writing styles with zero server uploads.
AI Social Bio Generator
Generate high-converting, aesthetic bios for Instagram, Twitter (𝕏), and LinkedIn with zero server uploads.
AI Cold Email & Pitch Generator
Generate personalized B2B cold email templates and sales pitches using AIDA and PAS frameworks.
AI Meeting Notes Summarizer
Extract executive summaries, key decisions, and assigned action item checklists from meeting transcripts.
AI Meta Description Generator
Generate high-CTR Google meta descriptions (150-160 chars) with live desktop & mobile SERP snippet preview.
Loan Prepayment Calculator
Calculate total interest saved and tenure reduction when making extra monthly or yearly lump sum loan prepayments.
JPG & PNG to WebP Converter
Convert JPG, PNG, and GIF images to modern Next-Gen WebP format with custom compression quality and 0 server uploads.
Scanned PDF OCR Text Extractor
Extract editable text from scanned PDF documents and books using WebAssembly Optical Character Recognition (OCR) with 0 server uploads.
Retirement & FIRE Corpus Calculator
Calculate target retirement nest egg and required monthly SIP investment adjusted for inflation and life expectancy.
Circular Image & Avatar Cropper
Crop photos into perfect circular avatars with custom stroke borders and transparent PNG backgrounds for WhatsApp and LinkedIn.
AI Job Cover Letter Generator
Generate compelling, tailored 3-paragraph job application cover letters customized for any job title, company, and skill set.
JSON to CSV & CSV to JSON Converter
Convert JSON arrays to tabular CSV spreadsheets and CSV files back to JSON with syntax validation and instant download.
Home Loan + SIP Recovery Calculator
Calculate how a small monthly SIP investment completely covers and recovers 100% of your home loan bank interest.
PDF to SAP & ERP Table Extractor
Extract line items, quantities, and prices from PDF invoices directly into SAP Batch CSV and ERP formats with 100% in-browser privacy.
PDF to Markdown / LLM Converter
Convert PDF research papers, books, and documents into clean GitHub Flavored Markdown ready for ChatGPT, Claude, and Gemini prompts.
Age Calculator
Calculate exact age in years, months, weeks, days, hours, and minutes with countdown to your next birthday.
Color Palette Generator from Image
Extract dominant color palettes and HEX/RGB codes from any uploaded photo using HTML5 Canvas in browser memory.
Ramadan Prayer Times & Fasting Timetable
Check daily Sehri, Iftar, Fajr, Dhuhr, Asr, Maghrib, and Isha prayer times with live countdown for cities worldwide.
College GPA & CGPA Calculator
Calculate college semester GPA and cumulative CGPA across USA 4.0 scale, Indian 10-point scale, and UK Degree Honours classifications.
Cron Expression Builder & Tester
Build, validate, and decipher crontab syntax with human-readable explanations and upcoming schedule run times.
JSON to CSV / CSV to JSON Dual Converter
Bidirectional converter between JSON arrays and CSV spreadsheets with automatic nested object flattening and custom delimiters.
Open Graph Image & Social Card Preview
Preview how your website URL and OG tags look when shared across WhatsApp, Facebook, Twitter/X, and LinkedIn.
YouTube Thumbnail Downloader
Download full HD (1080p), HQ, and standard YouTube video cover thumbnails in 1 click.
Duplicate Line Remover & List Cleaner
Remove duplicate lines, empty spaces, and sort lists alphabetically or numerically in browser RAM with 100% privacy.
Unix Timestamp Converter
Convert Unix epoch timestamps to human-readable dates and convert calendar dates back to Unix timestamps in UTC and local time.
AI Prompt Studio & Prompt Enhancer
Craft high-converting mega-prompts for ChatGPT, Claude 3.5, and Midjourney v6 with role, context, constraints, and examples.
US Paycheck & Salary Tax Calculator
Calculate take-home pay, federal income tax, state tax, Social Security (FICA), and Medicare deductions for hourly and salaried jobs.
Global VAT & Sales Tax Calculator
Add or remove Value Added Tax (VAT) with international country presets (UK 20%, EU, Gulf 15%, Australia 10%).
Hijri & Gregorian Date Converter
Convert dates between Islamic Hijri lunar calendar and Western Gregorian solar calendar with Umm al-Qura astronomical accuracy.
Social Media Video Link Grabber
Extract clean direct stream URLs, video covers, and metadata from public social media posts.
Facebook Video Link & Poster Grabber
Extract public Facebook video poster art, SD/HD resolution metadata, and stream URLs.
Instagram Reels Link & Poster Grabber
Extract public Instagram Reel cover posters, video aspect ratios, and direct stream links.
TikTok Video Link & Thumbnail Grabber
Extract clean cover thumbnails and stream metadata from public TikTok videos in 1 click.
AI Prompt Optimizer & Engineer
Transform rough prompts into high-performance, structured system prompts using CO-STAR, Few-Shot, and Chain-of-Thought frameworks.
OpenAPI 3.1 & Swagger Spec Builder
Visually build OpenAPI 3.1.0 and Swagger API specifications with real-time YAML and JSON generation.
JSON Schema Generator & Validator
Automatically infer strict JSON Schema (Draft 2020-12 and Draft-07) from sample JSON payloads with type detection.
API Tester & HTTP Client (Postman Alternative)
Lightweight in-browser REST API and HTTP client. Test GET, POST, PUT, and DELETE requests with headers, payloads, and latency telemetry.
Regex Visualizer & Railroad Diagram
Deconstruct and visualize complex regular expressions as interactive railroad token diagrams with plain-English explanations.
Next.js & Tailwind Code Snippet Generator
Generate clean, production-ready code snippets for Next.js 15 App Router, React 19 hooks, and Tailwind CSS v4 components.
AI Resume Optimizer & ATS Scorer
Audit your resume against any job description. Get an instant ATS match score (0-100), identify missing keywords, and enhance bullets.
PDF Redactor (PII Sanitizer)
Permanently redact and blackout sensitive PII, SSN, PAN, and banking numbers in PDF files with in-browser processing.
TypeScript Interface & Type Generator
Convert JSON objects into typed TypeScript interfaces, type aliases, and Zod validation schemas automatically.
YAML Formatter, Validator & JSON Converter
Format, validate, and convert YAML documents. Features bi-directional YAML ↔ JSON conversion and indentation controls.
PDF Repair Tool
Repair corrupted, unreadable, or damaged PDF documents directly in your browser. Reconstructs missing XREF tables and restores stream objects with zero file uploads.
PDF Unlock & Restriction Remover
Remove owner passwords, printing locks, and editing restrictions from PDF files instantly. Client-side decryption with complete privacy.
PDF Compare & Diff Tool
Compare two PDF documents side-by-side with visual overlay diffs, text change highlights, and layout verification. 100% private in-browser comparison.
PDF to Editable Word Converter
Convert PDF documents into editable Word (.docx / .doc) and rich-text files. Edit paragraphs, fix typos in-browser, and export formatted documents.
Bulk PDF Multi-Tool Processor
Batch process 50+ PDF files simultaneously. Merge multiple PDFs in order, compress an entire folder into a ZIP, or stamp batch watermarks in your browser.
PDF to EPUB eBook Converter
Convert PDF documents into standard IDPF EPUB eBooks. Reflowable typography formatted for Amazon Kindle, Apple Books, Kobo, and Android e-readers.
PDF to LaTeX Academic Converter
Convert PDF research papers, mathematical formulas, and scientific publications into clean compile-ready LaTeX (.tex) code. Overleaf and TeXShop compatible.
PDF to Responsive HTML5 Converter
Convert PDF documents into clean, responsive HTML5 web pages with semantic tags and embedded CSS. Mobile-friendly, accessible, and 100% private.
AI Image Upscaler & Super-Resolution
Upscale photos and graphics 2x and 4x up to Ultra HD 4K. Neural edge sharpening, noise suppression, and interactive split-screen comparison in browser.
AI Photo Enhancer & Color Balancer
Enhance photo clarity, color vibrance, exposure, and contrast with one click. AI Auto-Clarity, Cinematic HDR, and portrait presets with zero uploads.
Video Frame Extractor & Grabber
Extract crisp, high-resolution still frames from MP4, WebM, and MOV videos. Capture frames at exact timestamps or batch extract an entire timeline to ZIP.
Video to Animated GIF Converter
Turn video clips into lightweight, animated GIFs in seconds. Customize frame rate (FPS), clip duration, and resolution with zero server uploads.
AI Photo Restorer & Scratch Remover
Restore old, scratched, yellowed, and faded vintage photographs. De-sepia correction, scratch reduction, contrast revival, and interactive split slider.
Audio Background Noise Remover
Remove 50/60Hz electrical hum, microphone rumble, and high-frequency hiss from audio files in your browser. Live spectrum visualizer and instant export.
Image to Scalable SVG Vectorizer
Convert bitmap images (PNG, JPG, WebP) into infinitely scalable SVG vector graphics. Multi-color palette tracing, monochrome stamp mode, and instant SVG export.
Bulk Media & Image Web Optimizer
Batch optimize up to 50+ images simultaneously. Convert to Next-Gen WebP, resize dimensions, strip EXIF metadata, and download an organized ZIP archive.
AI Business Email Writer
Draft high-converting business emails, proposals, follow-ups, and pitches with customizable tone (Formal, Friendly, Persuasive, Executive) and subject lines.
AI Long-Form Article & Blog Writer
Write comprehensive, structured long-form articles and blog posts with H2/H3 headings, key takeaways, and FAQ sections. Markdown & HTML export.
AI Multi-Platform Social Media Post Studio
Generate high-engagement social posts across Twitter/X threads, professional LinkedIn articles, and aesthetic Instagram captions with hashtags in one click.
AI eCommerce Product Description Studio
Generate high-converting product listings for Amazon, Shopify, and Etsy. Optimized titles, 5 benefit-driven bullet points, sales descriptions, and SEO keywords.
AI Customer Sentiment & Emotion Analyzer
Analyze sentiment polarity (-100 to +100) on customer reviews, support tickets, and surveys. Detect emotions (Joy, Trust, Frustration) and highlight key terms.
Income Tax Calculator (India & US)
Compare India Income Tax FY 2026-27 under New Regime vs Old Regime side-by-side with Section 87A rebate and ₹75,000 standard deduction. Also calculates US Federal Tax.
Goal-Based Investment & Wealth Planner
Plan long-term financial goals (Child Education, Home Purchase, Retirement). Calculates inflation-adjusted future target costs and required monthly SIP investments.
Gold & Jewelry Price Calculator (with GST & Wastage)
Calculate the exact price of gold jewelry. Itemizes 24K, 22K (Hallmark) and 18K gold rate, making charges/wastage %, and 3% GST. Supports grams, tola, and pavan.
AI Video Subtitle & SRT Generator
Generate, edit, and sync video subtitles with speech AI and export accurate .SRT and .VTT files directly in your browser.
GIF to MP4/WebM Video Converter
Convert animated GIFs into lightweight MP4 and WebM videos with customizable framerate and loop duration.
AI Video Resolution Upscaler
Boost video resolution, enhance edge clarity, and upscale clips to 1080p and 4K with GPU canvas shaders.
AI Viral Video Script & Hook Studio
Generate high-retention video scripts, viral 3-second hooks, and scene breakdowns for YouTube, TikTok, and Reels.
Custom Knowledgebase AI Chatbot Studio
Build, test, and export customized AI chatbots grounded in your custom FAQ knowledge base.
AI Multi-Class Text Intent Classifier
Classify customer support tickets, emails, and feedback into categories with confidence score breakdowns.
AI Trending Content Topic & Cluster Generator
Generate high-intent content clusters, evergreen pillar ideas, and tutorial topics from seed keywords.
Voice Prompt to Production Script Synthesizer
Transform ramblings and voice memos into structured scripts, executive briefings, and action items.
Autonomous Agent System Prompt & Tool Calling Studio
Engineer production-grade ReAct agent system prompts, guardrails, and OpenAI/Claude tool calling specs.
File Size & Compression Ratio Diff Checker
Compare original vs optimized files to calculate byte-exact savings, reduction ratios, and CDN bandwidth economy.
Base64 Data String to File Reconstructor
Decode Base64 raw strings and Data URIs back into binary files with automatic MIME detection.
Split-Screen Markdown & KaTeX Live Studio
Live synchronous Markdown preview with GitHub Flavored Markdown tables, KaTeX math, and export options.
Code-to-Image Carbon Screenshot Maker
Render beautiful, high-resolution code snippet screenshots with custom gradients and macOS window frames.
Dynamic Custom QR Code & Logo Studio
Generate customizable QR codes with custom color palettes and centered brand logos.
NIST Password Entropy & Vulnerability Analyzer
Evaluate cryptographic bits of entropy, GPU brute-force resistance, and NIST SP 800-63B compliance.
Magic Bytes & MIME Header File Type Identifier
Detect the true binary identity and MIME type of files via magic byte inspection to expose spoofed file extensions.
Domain WHOIS & Live DNS Inspector
Inspect registrar details, active nameservers, and real-time DNS-over-HTTPS (DoH) resolution records.
Webpage Backlink & Anchor SEO Auditor
Extract, inspect, and audit all internal and outbound hyperlinks, anchor texts, and rel tags.
Core Web Vitals & Lighthouse Speed Simulator
Measure real user telemetry for Google Core Web Vitals (LCP, INP, CLS, TTFB, FCP) in the browser.
Postman Collection v2.1 JSON Generator
Build compliant Postman Collections ready for 1-click import into Postman, Insomnia, or Thunder Client.
In-Browser GraphQL Playground & Explorer
Execute GraphQL queries, inspect variables, and test schemas with zero third-party telemetry.
ESLint Flat Config (v9+) Interactive Builder
Configure and export modern flat configuration files for Next.js, React, TypeScript, and Tailwind.
Safe In-Browser HTML Table & Data Scraping Parser
Extract, parse, and convert messy HTML web tables into structured CSV and JSON datasets locally.
OAuth 2.0 PKCE & JWT Token Studio
Generate RFC 7636 PKCE Code Verifiers, SHA-256 Code Challenges, and mock JWT Bearer tokens in your browser.
API Rate Limiter Visualizer & Simulator
Simulate Token Bucket and Leaky Bucket algorithms, burst capacity, and HTTP 429 backpressure handling.
Visual No-Code Event Workflow Builder
Design, test, and export conditional event pipelines and integration workflows.
Barcode Reader
Scan barcodes and QR codes from any image instantly using the browser's native decoder — no uploads, no ads.
Batch Image Compressor
Compress multiple JPG, JPEG, and PNG images at once in your browser. Target a maximum file size, preview savings, and download all as a ZIP.
BBCode to HTML Converter
Convert forum BBCode tags [b], [i], [url], [img], [quote], [list] into clean, semantic HTML markup with live preview.
Date Difference Calculator
Calculate the exact number of days, weeks, months, and working business days between any two calendar dates.
Date to Unix Timestamp
Convert any calendar date and time into Unix epoch seconds and milliseconds, in local time or UTC.
DNS Lookup Tool
Query DNS records (A, AAAA, MX, TXT, NS, CNAME, SOA) for any domain via Google Public DNS and Cloudflare DNS over HTTPS.
DPI Converter
Convert any image to 300 DPI, 600 DPI, or custom print resolutions for passport photos, exam forms, and high-quality printing.
Email Extractor
Extract, dedupe, and sort every email address from any pasted text, HTML, CSV, or server log instantly — free and private.
EXIF Data Reader
Read hidden EXIF metadata from any photo: camera model, lens, shutter speed, ISO, aperture, date taken, and GPS coordinates.
Fancy Text Generator
Convert text into 14+ stylish Unicode fonts — bold, cursive script, gothic, bubble, and aesthetic styles for Instagram, Twitter, and TikTok.
Gravatar Checker
Check if any email address has a registered Gravatar profile, preview the avatar in high resolution, and copy the direct image URL.
HTML Tags Remover
Strip all HTML tags, scripts, and CSS styles from pasted markup to get clean, readable plain text with decoded HTML entities.
Mailto Link Generator
Build mailto: links with pre-filled recipient, CC, BCC, subject line, and body text, plus ready-to-paste HTML anchor code.
MP3 Cutter & Audio Trimmer
Cut any audio clip to exact start and end seconds and export as MP3 or WAV — ringtone maker with zero server upload.
Numerology Calculator
Calculate your life path, birthday, and expression numbers from your date of birth and full name, with complete interpretations.
PayPal Link Generator
Build PayPal.me payment links with pre-filled amount and currency for client invoices, tips, donations, and freelance services.
PDF Sign & Place
Draw your signature, click where it goes on any PDF page, and download the signed file — powered by pdf-lib, 100% in-browser.
Ping Test
Test website latency and response time from your browser with 5-sample ping, jitter, and status codes.
Pregnancy Due Date Calculator
Calculate pregnancy due date from last period, current week, trimester, and key scan milestones — private and instant.
Search Console CSV Analyzer
Analyze a Google Search Console Performance CSV in your browser. Find high-impression low-CTR queries, pages ranking 4–20, and quick SEO wins.
SEO Slug Generator
Turn any title into a clean, lowercase, hyphenated SEO-friendly URL slug with accent transliteration and stop-word removal.
SSL Certificate Checker
Check any domain's SSL/TLS certificate: issuer, validity dates, expiry countdown, and covered SAN hostnames — free and instant.
WhatsApp Status Resizer
Resize any photo to 1080×1920 WhatsApp and Instagram status size with a stylish blurred-fill background — no cropping, no quality loss.
Text Separator
Split messy text into clean lines by comma, pipe, tab, or any custom delimiter with trim, sort, and dedupe options.
Timetable Maker
Build a printable weekly timetable or class schedule that auto-saves in your browser — free and no account needed.
Free Text Translator
Translate text between 20+ languages instantly with a free open translation API — no signup, no limits to hit.
Unix Timestamp to Date
Convert Unix epoch seconds or milliseconds to readable UTC, local, and ISO dates with relative time ('5 minutes ago').
URL Extractor
Pull every http/https link out of any text, HTML, or log file with automatic cleanup, sorting, and deduplication — free and private.
URL Parser
Break any URL into protocol, host, port, path, hash, and a decoded table of every query parameter — free and private.
User Agent Parser
Decode any User-Agent string into browser, engine, OS, and device type — and see your own browser's UA string instantly.
UTM Link Generator
Append all five UTM campaign parameters to any URL with correct encoding and existing-query handling — free and private.
Video Compressor
Compress MP4 and WebM videos in your browser using FFmpeg WebAssembly — pick quality, see new size, zero server uploads.
WhatsApp Link Generator
Create wa.me click-to-chat links with a pre-filled message for customer support, sales, and social media bios.
WhatsApp Sticker Maker
Turn any photo into a 512×512 WhatsApp sticker instantly — square crop, optional caption bar, PNG/WebP download with zero uploads.
Wheel of Decision
Spin a customizable decision wheel with your own options — fair crypto-random picks for classes, giveaways, and dinner.
YouTube Timestamp Link Generator
Create YouTube links that open at an exact minute and second — perfect for sharing the best moment of any video.