All Tools
Every A2ZKit tool in one place — 126+ free tools that run entirely in your browser. No signup, no uploads.
PDF Tools
10 toolsMerge PDFCombine multiple PDF files into a single document, in any order
Split PDFExtract a page range or split a PDF into separate single-page files
Images to PDFConvert JPG and PNG images into a single PDF document
Rotate PDFRotate every page of a PDF by 90, 180, or 270 degrees
PDF to JPGConvert each page of a PDF into a high-quality JPG image
Compress PDFReduce PDF file size — best for large scanned or image-heavy documents
Delete & Reorder PDF PagesRemove unwanted pages or rearrange the page order in a PDF
Add Page Numbers to PDFInsert page numbers into a PDF, with position and format options
Watermark PDFStamp a text watermark (e.g. CONFIDENTIAL or DRAFT) across every page
PDF to WordConvert a PDF into an editable Word (.docx) document (text-based)
Text Tools
6 toolsText Case ConverterConvert text between different cases (UPPERCASE, lowercase, Title Case, etc.)
Word & Character CounterCount words, characters, sentences, and paragraphs in your text
Lorem Ipsum GeneratorGenerate Lorem Ipsum placeholder text with customizable options
Text Diff CheckerCompare two texts and highlight differences with syntax highlighting
Text Duplicate RemoverDetect and remove duplicate lines from text
Reading Time EstimatorEstimate reading time, speaking time, and comprehension metrics for any text
Developer Tools
24 toolsJSON FormatterFormat, validate, and beautify JSON with syntax highlighting
Base64 Encoder/DecoderEncode and decode Base64 strings
URL Encoder/DecoderEncode and decode URLs with different encoding types
Hash GeneratorGenerate MD5, SHA1, SHA256, SHA512 hashes
QR Code GeneratorGenerate QR codes for text, URLs, WiFi, and more
IP Address CheckerCheck your public IP address (IPv4/IPv6) and browser information
Tokenizer PlaygroundReal-time tokenization with popular LLM models (GPT-4, GPT-3.5, GPT-5)
Password Strength CheckerCheck password strength, estimate crack time, and generate secure passwords
Regex TesterTest and debug regular expressions with real-time match highlighting
JWT DecoderDecode and inspect JSON Web Tokens — header, payload, and signature
UUID GeneratorGenerate random UUIDs (v4) instantly — single or bulk
Cron Expression ExplainerTranslate cron expressions into plain English and preview next run times
Unix Timestamp ConverterConvert Unix epoch timestamps to human-readable dates and back, in any timezone
SQL Formatter & BeautifierFormat, beautify, or minify SQL queries in 7 dialects — MySQL, PostgreSQL, T-SQL, and more
XML Formatter & ValidatorPretty-print, minify, and validate XML with error line numbers — CDATA and comments preserved
JSON Diff CheckerCompare two JSON documents structurally — added, removed, and changed values with exact paths
HTML Minifier & BeautifierMinify HTML including inline CSS/JS, or beautify messy markup, with size savings shown
CSS Minifier & BeautifierMinify stylesheets with CSSO or beautify compressed CSS, with byte and gzip savings shown
JavaScript Minifier & BeautifierMinify JavaScript with Terser or beautify minified code, with byte savings shown instantly
Barcode GeneratorCreate CODE128, EAN-13, UPC-A, and 5 more barcode formats — download as SVG or PNG
Chmod CalculatorConvert Linux file permissions between rwx checkboxes, octal (755), and symbolic notation
IP Subnet CalculatorGet network, broadcast, host range, and masks from any IPv4 address and CIDR prefix
Cron Expression BuilderBuild cron expressions visually with live plain-English output and next run times
Mock Data GeneratorGenerate realistic fake names, emails, dates, and UUIDs as JSON, CSV, or SQL INSERT statements
Calculator Tools
27 toolsUnit ConverterConvert between different units of measurement
Percentage CalculatorCalculate percentages, discounts, and markups
Age CalculatorCalculate age between two dates
BMI CalculatorCalculate Body Mass Index
Days Weeks Hours ConverterConvert between days, weeks, hours, and other time units
World Time ConverterConvert time between different time zones worldwide
Square Root SimplifierSimplify square roots by extracting perfect square factors
Trigonometric FunctionsCalculate sine, cosine, tangent, and their inverses
Pythagorean TheoremCalculate missing sides of right triangles
Geometric Theorem LibraryComprehensive library of geometric theorems and formulas with step-by-step solutions
Matrix CalculatorPerform matrix operations including addition, subtraction, multiplication, determinant, inverse, and more
Scientific CalculatorFull-featured scientific calculator with trigonometry, logarithms, and history
Quadratic Equation SolverSolve quadratic equations ax²+bx+c=0 with step-by-step solutions
Statistics CalculatorCalculate mean, median, mode, standard deviation, and more from a dataset
Fraction CalculatorAdd, subtract, multiply, and divide fractions with step-by-step solutions
Roman Numeral ConverterConvert between Roman numerals and Arabic numbers
Prime Number CheckerCheck if a number is prime and find prime numbers in a range
Fibonacci GeneratorGenerate Fibonacci sequences and find any Fibonacci number
Number Base ConverterConvert numbers between binary, octal, decimal, and hexadecimal
Tip CalculatorCalculate tip and split bill among multiple people
Mortgage CalculatorCalculate monthly mortgage payments, total interest, and amortization
Retirement CalculatorEstimate your retirement savings and monthly income at retirement age
Fuel Cost CalculatorCalculate fuel cost and consumption for trips
GPA CalculatorCalculate GPA from grades and credit hours
Sleep CalculatorCalculate optimal sleep and wake times based on sleep cycles
Aspect Ratio CalculatorCalculate and convert image and video aspect ratios
Electricity Cost CalculatorCalculate electricity cost for appliances based on wattage and usage time
Time Tools
4 toolsData Tools
4 toolsDesign Tools
17 toolsFavicon GeneratorGenerate favicons from images in multiple sizes and formats
Image Compare SliderCreate before/after image comparison with interactive slider
Color Palette GeneratorExtract colors from images and generate harmonious palettes
SVG OptimizerOptimize SVG files by removing unnecessary elements and reducing file size
Image CompressionCompress images while maintaining quality for faster loading
Image Format ConverterConvert images between different formats (JPEG, PNG, WebP, GIF, BMP, TIFF)
Image WatermarkingAdd text or image watermarks to protect your work and add branding
Image ResizerResize images by pixels or percentage, with optional aspect-ratio lock
Image CropperCrop images to a square or any aspect ratio (1:1, 16:9, 4:3) in your browser
Rotate & Flip ImageRotate images by 90/180/270 degrees and mirror them, with a live preview
Image to Text (OCR)Extract text from images, screenshots, and scans using in-browser OCR
Circle Crop / Profile PictureCrop a photo into a circle (transparent corners) — perfect for avatars and profile pictures
Bulk Image ResizerResize many images at once to a max size or percentage and download them as a ZIP
Bulk Image RenamerRename a batch of images with a numbered pattern and download them as a ZIP
Image to Base64Convert an image to a Base64 data URI and back — copy, embed in CSS/HTML, or decode
HEIC to JPG ConverterConvert iPhone HEIC/HEIF photos to JPG or PNG in your browser — batch convert and download as ZIP
EXIF Viewer & Metadata RemoverView photo EXIF metadata — camera, GPS, timestamps — and strip it without re-encoding or quality loss
Color Tools
5 toolsColor Picker from ImagesUpload images and extract exact hex values instantly
Color Palette ExtractorExtract dominant colors and create beautiful palettes from images
Color Contrast CheckerTest color combinations for WCAG accessibility compliance
Color Blindness SimulatorSee how your designs appear to users with color vision deficiencies
Color Format ConverterConvert any CSS color between HEX, RGB, HSL, HWB, OKLCH, OKLAB, LAB, and CMYK with live preview
CSS Generators
4 toolsCSS Box Shadow GeneratorCreate beautiful box shadows with visual sliders and live preview
CSS Gradient CreatorDesign gradients with interactive color stops and angle controls
Border Radius GeneratorCreate custom border radius with individual corner controls
CSS Animation PreviewerTest and preview CSS animations with real-time controls
Finance Tools
9 toolsLoan CalculatorCalculate monthly loan payments, total interest, and amortization schedule
Compound Interest CalculatorCalculate compound interest growth with different compounding frequencies
Currency ConverterConvert between world currencies with up-to-date exchange rates
VAT / Tax CalculatorCalculate VAT, sales tax, and net/gross prices
Salary CalculatorConvert salary between hourly, daily, weekly, monthly, and annual rates
ROI CalculatorCalculate return on investment and annualized ROI for any investment
Break-Even CalculatorCalculate break-even point in units and revenue for your business
Discount CalculatorCalculate final price after discounts and find the original price
Tax Bracket CalculatorCalculate your US federal income tax bracket and effective tax rate
Health & Fitness
7 toolsTDEE CalculatorCalculate Total Daily Energy Expenditure and calorie needs for your goals
Body Fat CalculatorEstimate body fat percentage using Navy method and BMI method
Macro CalculatorCalculate daily macronutrient targets based on your goals
Pregnancy CalculatorCalculate due date, conception date, and pregnancy milestones
Ideal Weight CalculatorCalculate ideal body weight using multiple medical formulas
Water Intake CalculatorCalculate daily water intake needs based on weight, activity, and climate
Calorie Deficit CalculatorCalculate your daily calorie deficit for weight loss goals
Web Analysis
9 toolsWebsite Speed TesterGet real Lighthouse scores and performance insights
Meta Tag ExtractorExtract and analyze meta tags from any website
Social Media PreviewSee how your URLs appear on Facebook, Twitter, LinkedIn
Website Color ExtractorExtract dominant colors and generate color palettes from any website
DNS LookupLook up DNS records for any domain — A, AAAA, MX, CNAME, TXT, NS, and more
URL Slug GeneratorTurn any title into a clean, URL-safe slug with custom separators, stop-word removal, and bulk mode
UTM Campaign URL BuilderBuild campaign tracking URLs with UTM parameters — presets for Google Ads, Facebook, email, and more
Meta Tag GeneratorGenerate SEO, Open Graph, and Twitter Card meta tags with live Google and social share previews
Robots.txt GeneratorBuild a robots.txt with per-bot allow/disallow rules, sitemaps, and one-click AI-crawler blocking