The Ultimate All-in-One Web Utilities
The ultimate all-in-one online utilities platform designed to boost your productivity across documents, tech, finance, and lifestyle.
Popular
Most frequently used utilities by our community
Compound Interest Calculator
Calculate savings growth with detailed charts and annual breakdown.
URL Shortener with Interstitial
Shorten URL with a 5-second interstitial ad page before redirecting.
Random Spinner Wheel
Spin the wheel for random names or choices with festive confetti effects.
AI Utilities
Design and optimize prompts for popular AI systems like ChatGPT, Midjourney, and Claude.
AI Prompt Builder & Optimizer
Craft and optimize high-quality prompts for ChatGPT, Midjourney, and Claude.
AI Article Rewriter
Paraphrase, rewrite, shorten, expand, or adjust the tone of any article using AI.
AI Social Media Caption Generator
Generate highly engaging captions for Facebook, Instagram, TikTok, and X/Twitter with recommended hashtags.
AI Text Summarizer
Summarize long articles and text into concise summaries, bullet points, or paragraphs.
AI Address Translator & Standardizer
Translate and standardize addresses into clean English mailing formats with parsed fields and interactive envelope preview.
Text & Document Utilities
Daily essential tools for office workers, students, and content creators.
Text to Speech Reader
Convert text to speech with multiple languages, speed, and pitch control.
Word & Character Counter
Count characters, words, lines, and estimate reading time.
Case Converter
Convert English text to UPPERCASE, lowercase, or Title Case.
Whitespace & Duplicate Remover
Clean text by removing duplicate lines and excessive whitespaces.
TXT to SRT/VTT Converter
Convert line-separated text into SRT/VTT subtitle files for videos.
Line Randomizer / Shuffler
Randomly shuffle the order of lines or item lists.
Text Diff & Compare
Compare text differences side-by-side or inline with character-level diff highlighting.
Thai Grammar Checker
Check and auto-correct commonly misspelled Thai words.
Keyboard Layout Converter
Convert text typed with the wrong keyboard layout (Thai ⇄ English) back to the intended layout instantly.
Document & PDF Utilities
Pro-grade PDF manipulation suite. 100% client-side processing for maximum privacy.
PDF to Image Converter
Convert PDF pages into high-resolution JPG/PNG images.
Image to PDF Creator
Combine multiple JPG/PNG images into a single PDF document.
PDF Merger & Splitter
Merge multiple PDFs together or split/extract specific pages.
PDF Unlocker & Decrypter
Remove password protection from locked PDFs for unrestricted access.
PDF Watermark & Stamp
Protect your documents by stamping custom text watermarks on PDF pages.
Sign PDF Document
Draw, type, or upload your signature and place it anywhere on your PDF document locally.
Organize & Delete PDF Pages
Rearrange page sequence or delete unnecessary pages from your PDF using an interactive card drag-and-drop workspace.
Rotate PDF Pages
Rotate specific pages or all pages of your PDF document.
Compress PDF Document
Compress and reduce the file size of your PDF documents locally.
Excel/CSV to PDF Converter
Convert Excel (.xlsx) and CSV spreadsheets into formatted PDFs with print preview.
Graphic Design Utilities
Essential design and image processing tools for graphic designers. 100% client-side.
Color Picker & Palette Extractor
Upload an image to pick exact pixel colors and extract dominant palettes.
Image Converter & Compressor
Convert images between PNG, JPG, WEBP and compress file size locally.
Image Background Remover
Remove image background locally in browser, fully private.
AI Image Enhancer & Upscaler
Enhance image sharpness and upscale resolution up to 8x using client-side AI processing.
CSS Gradient Generator
Design beautiful linear and radial gradients with custom angles and colors.
Aspect Ratio Calculator
Calculate dimensions for 16:9, 4:3, 1:1, 9:16 and view social media guides.
Box Shadow & Glassmorphism
Design realistic box shadows and glassmorphism backdrop blur effects.
SVG to PNG/JPG/WebP Converter
Convert SVG vector files to PNG, JPG, or WebP with custom scaling and backgrounds.
Audio & Video Editors
Essential audio and video utilities for content creators to record/cut audio, extract high-quality video frames, edit subtitles, and generate storyboards.
Audio Cutter & Voice Recorder
Trim audio tracks or record your voice from mic and export WAV files.
Video Frame Extractor
Extract original-resolution screenshot frames from videos to create thumbnails.
Subtitle Editor & Timing Shifter
Import and edit WebVTT/SRT subtitle timings, shift offsets, and search/replace text.
Video Speed Editor & Storyboard
Adjust video playback rates and generate a series layout storyboard frame grid.
Video to GIF Converter
Convert MP4/WebM videos into animated GIFs entirely client-side. Set custom time range, FPS, and width.
Link, QR & Barcode Utilities
Fast & convenient link, QR code, and barcode utilities with high ad revenue potential.
URL Shortener with Interstitial
Shorten URL with a 5-second interstitial ad page before redirecting.
QR Code Generator
Convert links, text, or phone numbers into QR Code images instantly.
Barcode Generator
Generate world-standard CODE128, EAN-13, UPC-A, CODE39, ITF-14 barcodes with custom colors and sizes.
Social Chat Link Generator
Generate instant chat links for LINE, WhatsApp, and Facebook Messenger.
IP & User Agent Checker
Check your current IP address, country location, and User Agent.
URL Extractor
Extract all HTTP/HTTPS links from long texts or messy code snippets.
Developer & Tech Utilities
High-speed utilities developers bookmark and use as their daily tech companions.
Markdown to HTML Converter
Convert Markdown to HTML with real-time preview and syntax support.
CSV ↔ JSON Converter
Dual-mode converter between CSV and JSON formats with custom delimiter support.
Universal Data Formatter
Format, minify, and convert data structures between JSON and YAML.
Secure Password Generator
Generate highly secure random passwords with customizable options.
Base64 Encode/Decode
Encode plain text to Base64 or decode Base64 back to plain text.
Lorem Ipsum Generator
Generate Thai and English dummy text for website design testing.
Color Code Converter
Pick colors and convert values between HEX, RGB, HSL, and CMYK.
Website Screenshot
Capture full-page, high-resolution screenshots of any website from its URL.
CRON Expression Generator
Visual tool to build and explain CRON expressions for task scheduling.
SEO & Digital Marketers
Professional suites to optimize search rankings, audit site health, build campaign URLs, and analyze keywords.
SEO Audit Crawler
Crawl webpage, compute SEO health scores, parse outline, and audit technical performance parameters.
Keyword Density Analyzer
Calculate keyword frequencies, filter stop words, extract n-grams, and analyze keyword prominence settings.
Meta Tag Generator
Generate and analyze HTML Meta Tags with live search snippet and social media card previews.
Robots.txt Generator & Tester
Create clean robots.txt crawl rules and dynamically validate specific bot access permissions.
UTM Campaign Link Builder
Create UTM campaign tracking links with channel presets, integrated URL shortener, and QR codes.
Business Utilities
Excellent utilities to assist with daily business operations like invoice generation.
Invoice Generator
Create professional PDF invoices instantly. No signup required.
AI Business Plan Generator
Generate a 1-page Lean Canvas business plan and pitch deck outline using AI.
Digital Business Card (vCard)
Create a digital business card with a scannable QR code to save contacts instantly.
Receipt Scanner (OCR)
Scan receipts using AI to extract store name, date, and total amount. Export to CSV.
Org Chart Builder
Build an interactive organizational chart with drag-and-drop and export to PDF.
AI Brand Name Generator
Let AI generate creative brand names and catchy slogans based on your keywords.
Calculators, Currency & Finance
High Time-on-Site calculators and global currency converter yielding premium ad placement revenue.
VAT Calculator
Calculate prices before and after Value Added Tax (VAT).
Percentage Calculator
Universal percentage calculator for finding percentages, ratios, and percentage changes.
Global Currency Converter
Real-time currency converter supporting 160+ global currencies with live exchange rates.
Compound Interest Calculator
Calculate savings growth with detailed charts and annual breakdown.
Income Tax Calculator
Estimate income tax brackets and payable tax amount easily.
Percentage & Discount Calculator
Quickly calculate percentage values and discounted product prices.
Unit Price & Value Comparator
Compare 2 or more products to find which one has the cheapest unit price and best value.
Loan & Mortgage Calculator
Calculate monthly payments (EMI), total interest, and amortization schedule with extra payment support.
HR & Project Management
Essential tools for HR managers and project leads to calculate timesheets, net salary, set timers, and generate Gantt charts.
Work Hours & Timesheet Calculator
Calculate daily/weekly work hours, breaks, overtime (OT), and total wages with CSV exports.
Net Salary & Payroll Tax Calculator
Calculate net salary, social security, provident fund, and progressive income tax brackets easily.
Pomodoro Focus Timer & Task List
Manage daily tasks and focus sessions utilizing the Pomodoro clock with visual progress.
Simplified Gantt Chart Generator
Generate simplified Gantt charts to visually schedule project tasks with progress bars and SVG download.
Gamified Task Sim (Office RPG)
Interactive company task delegation & avatar sandbox with Office RPG style.
Cozy Village RPG & Builder
Embark on idle adventures, fight monsters, collect resources to build/upgrade your village, and visit friends.
Academic & Education
Essential tools for students, researchers, and academics to calculate GPA, generate citations, and analyze texts.
GPA & GPAX Calculator
Calculate semester and cumulative GPA (GPAX) with target GPA planning helper.
Bibliography & Citation Generator
Generate academic citations in APA 7th, MLA 9th, and Harvard formats for books, websites, and journals.
Plagiarism & Text Similarity Checker
Compare two text blocks to identify similarity percentage and highlight duplicated word sequences.
Scientific Calculator
Advanced math calculations featuring trigonometry, logarithms, exponentiation, and formula history.
Engineering & Technical Tools
Professional engineering sizing calculators, CCTV storage requirements, and solar cell setups.
CCTV Storage & Recording Days Calculator
Professional CCTV storage calculator. Estimate required HDD capacity and recording days based on resolution, FPS, H.265+ codec, and bitrate.
Solar Cell Size Calculator
Automatically calculate required solar panels, battery, and inverter size.
Lifestyle & Everyday
Calculators and everyday utilities for daily convenience.
Split Bill Calculator
Easily split restaurant bills among friends with custom tip percentages.
Date Calculator
Calculate duration between dates or add/subtract time from a specific date.
Event Countdown Timer
Beautiful countdown timer for important events and milestones.
World Time Zone Converter
Compare major world city time zones with your local current time.
Universal Unit Converter
Convert length, weight, temperature, area, volume, speed, time, and digital units simultaneously in realtime.
Retirement & Birthday Countdown
Calculate and countdown to your retirement age or your next birthday in real-time.
Meme Generator
Upload an image, add classic top and bottom impact text, and download your meme instantly.
Randomizers
Fun, friendly, and highly shareable randomizers for everyday lifestyle decisions.
Random Spinner Wheel
Spin the wheel for random names or choices with festive confetti effects.
Random Number Generator
Instantly generate random numbers within customizable Min/Max ranges.
Yes/No Decision Maker
Minimalist Yes or No random decision maker for the indecisive.
Team Generator & Match Maker
Randomly split a list of names into groups or pairs with cool shuffling animations.
Astrology & Fortune
Popular astrology, numerology, auspicious colors, and online fortune sticks.
Lucky Number & Daily Fortune
Calculate your daily lucky numbers, colors, and get a fortune cookie message based on your birthday.
AI Dream Interpreter
Tell AI your dream to receive a precise dream interpretation and a 3-digit lucky number.
E-SiamSi Fortune Sticks
Shake the virtual fortune sticks to get your daily fortune reading on love, work, and finance.
Numerology Analyzer
Analyze numerology of your phone, license plate, and name in one tool.
Auspicious Colors by Birth Day
Find out your lucky colors and colors to avoid based on your day of birth for better luck.
Health & Fitness
Accurately calculate body mass index (BMI), basal metabolic rate (BMR), and health metrics.
BMI & BMR Calculator
Calculate BMI health index and daily BMR calorie requirements.
Food Calorie Estimator (AI)
Let AI estimate calories and macros from your meal description quickly and accurately.
Sleep Cycle Calculator
Calculate best sleep and wake times based on 90-min cycles, with deep sleep white noise.
AI Symptom Checker
AI system to evaluate symptoms and provide self-care advice (Not a medical diagnosis).
Daily Water Tracker
Track daily water intake with goals for better hydration and healthy skin.
Period & Ovulation Forecaster
Calculate next period start, ovulation day, and track cycle phases.
Why OneToolAll?
80+ online tools in one place. 100% browser-based, secure, no sign-up, no downloads.
100% Private — No Uploads
All files, images, and text are processed locally in your browser. Nothing is uploaded to external servers, ensuring complete data privacy.
Free & Unlimited — No Sign-Up
Every tool is 100% free with no usage limits, no account creation, and no paywalls. Open the website and start using immediately.
Any Device — Works Everywhere
Responsive design for desktop, tablet, and mobile. Supports Chrome, Safari, Firefox, and Edge — use anywhere, anytime.
How It Works — 3 Simple Steps
Choose a Tool
Search or browse tools by category — PDF, images, SEO, calculators, and more.
Input Your Data
Paste text, upload files, or enter values. Everything runs securely in your browser.
Get Results Instantly
Download, copy, or share results immediately — no waiting.
What Our Users Say
Feedback from real users that drives us to keep improving OneToolAll.
"All-in-one SEO tools. No need to switch between tabs anymore. Saves me so much time!"
Somchai Sawangsuk
Digital Marketer
"I love the timesheet calculator. It's incredibly easy to use and most importantly, free!"
Sarah Jenkins
Project Manager
"JSON Formatter and Base64 tools are blazing fast since everything runs client-side!"
Thanawat Deelert
Web Developer