Fast, Free & Easy-to-Use Online Tools

307 Essential Online Tools, All in One Place

Video to GIF Converter
Convert your videos into high-quality GIFs instantly.
Video to MP3 Converter
Extract high-quality audio from any video file instantly.
Video Compressor
Compress your videos without losing quality.
Audio Compressor
Reduce audio file size while maintaining clear sound quality.
Video Converter
Convert between popular video formats instantly.
Audio Converter
Convert between popular audio formats instantly.
Video to Audio Converter
Extract high-quality audio from video in any format.
Video to WebP Converter
Convert video clips into high-quality animated WebP files.
Video to APNG Converter
Convert video clips into high-quality animated PNG (APNG) files.
Video Trimmer
Trim and cut your videos instantly in the browser.
Video Muter
Remove audio from any video file instantly.
Video Speed Controller
Speed up or slow down your videos instantly.
Video Rotate & Flip
Correct the orientation of your videos instantly.
Audio Trimmer
Trim and cut your audio files instantly in the browser.
Audio Merger
Combine multiple audio files into one instantly.
Video Merger
Join multiple video clips into a single movie instantly.
Video Watermarker
Add text or image watermarks to your videos with drag-and-drop positioning.
Screen Recorder
Record your screen, webcam, or both directly in your browser.
Audio Volume Booster
Increase the volume of your audio or video files by up to 500% without losing quality.
Hardcode Subtitles Tool
Burn custom-styled subtitles directly into your video files with full control over colors, size, and position.
Image Censor
Securely redact, blur, or black out sensitive information from your photos in your browser.
Metadata (EXIF) Remover
Protect your privacy by stripping EXIF metadata from your images.
Image Merger
Combine multiple images together into a single vertical or horizontal image.
Image Rotate
Rotate only images with portrait or landscape orientation at once.
Image to Grayscale
Grayscale image is an online free tool to convert images into Grayscale.
Image Cropper
Select, crop, and download images with ease.
Image Adjustment
Fine-tune image parameters like brightness, contrast, and saturation.
Image Compressor
Compress images easily online.
Image Resizer
Resize any Image.
Image Upscaler
Enhance and upscale images using AI directly in your browser.
QR Code Generator
Create infinite QR Codes instantly.
QR Code Editor
Read, edit, and regenerate QR codes from images.
QR Code Reader
Read QR Codes from Image.
Image to Base64
Convert image to Base64 String.
JPG to PNG
Convert JPG to PNG easily online.
JPG to WEBP
Convert JPG to WEBP easily online.
PNG to JPG
Convert PNG to JPG easily online.
PNG to WEBP
Convert PNG to WEBP easily online.
WEBP to JPG
Convert WEBP to JPG easily online.
WEBP to PNG
Convert WEBP to PNG easily online.
Image OCR
Image to Text, Extract Text Data.
JFIF to PNG
Convert JFIF images to PNG format instantly.
JFIF to WEBP
Convert JFIF images to WEBP format quickly and securely.
ICO to PNG
Convert ICO icons to high-quality PNG format.
PNG to ICO
Convert PNG images to ICO icon format.
SVG to PNG
Convert SVG vector graphics to PNG images.
SVG to WEBP
Convert SVG vector graphics to high-performance WEBP images.
SVG to JPG
Convert SVG vector graphics to JPG images.
SVG to ICO
Convert SVG vector graphics to ICO icon format.
JPG to ICO
Convert JPG images to ICO icon format instantly.
WEBP to ICO
Convert WEBP images to ICO icon format instantly.
ICO to JPG
Convert ICO icons to JPG images instantly.
ICO to WEBP
Convert ICO icons to optimized WEBP images instantly.
HEIC to PNG
Convert Apple HEIC photos to high-quality PNG images.
HEIC to JPG
Convert Apple HEIC photos to high-quality JPG images instantly.
HEIC to WEBP
Convert Apple HEIC photos to modern WEBP format instantly.
TIFF to PNG
Convert TIFF images to high-quality PNG format instantly.
TIFF to JPG
Convert TIFF images to JPG format instantly.
Base64 to PNG
Convert Base64 strings back to PNG images instantly.
Base64 to JPG
Convert Base64 strings to high-quality JPG images instantly.
Sitemap Generator
Generate full-fledged XML sitemaps recursively in real-time.
Schema.org Entity Relationship Visualizer
Visualize and debug Schema.org JSON-LD entities and their relationships.
Visual Site Crawler & Architecture Mapper
Crawl and visualize your website architecture and internal linking structure.
Keyword Density & Content Semantic Analyzer
Analyze your content for keyword frequency, n-grams, and semantic structure to improve SEO ranking.
Social Analytics
Analyze the social media reach and total shares of any URL across popular platforms.
Redirect Checker
Checker whether a URL has a Redirect.
SEO Analyzer
Analyze and get a score for your on-page SEO.
Schema.org (JSON-LD) Generator
Generate structured data for your website using Schema.org JSON-LD format.
SERP Simulator
Preview how your website appears in Google search results.
Hreflang Tag Generator
Generate correct hreflang tags for your multi-language website.
Canonical URL Generator
Generate valid canonical tags to avoid duplicate content issues.
Keyword Cloud & Density Heatmap
Analyze your website's content to find the most used keywords.
Sitemap Visualizer
Visualize and analyze your XML sitemap structure.
JSON-LD Validator & Auto-Fixer
Validate, format, and fix your Schema.org JSON-LD code.
PWA Compatibility Checker
Audit your website for Progressive Web App features.
PWA Manifest Generator
Create a fully compliant Web App Manifest (manifest.json) for your Progressive Web App in seconds.
AMP Validator
Validate your Accelerated Mobile Pages (AMP) for errors.
JSON-LD to Microdata Converter
Convert your Schema.org JSON-LD to HTML Microdata.
Microdata to JSON-LD
Convert HTML Microdata to valid JSON-LD schema format for better SEO and structured data management.
SEO Tags Generator
Generate SEO & OpenGraph tags for your website.
Twitter Card Generator
Generate Twitter Cards for website embeds.
Privacy Policy Generator
Generate Privacy Policy pages for your website.
Terms of Service Generator
Generate TOS for your website.
Robots.txt Generator
Generate Robots.txt Files
HTACCESS Redirect Generator
Generate HTACCESS Redirects
Htaccess to Nginx Converter
Convert .htaccess redirect rules and configurations to Nginx-ready syntax.
Nginx to Htaccess Converter
Convert Nginx configuration rules and redirects to Apache .htaccess syntax.
HTTP-auth Generator
Generate .htpasswd and server configuration rules for Apache and Nginx HTTP Authentication.
Wheel Color Picker
Dive into the world of gooey fun! Spin the wheel to craft your unique slime masterpiece.
Online SMTP Test
Free advanced online tool to Test and check your SMTP server.
GZIP Compression Test
Test if Gzip is working on your website.
Domain Generator
Generate Domain names from keywords.
Domain WHOIS
Get WHOIS Information about a domain name.
URL Parser
Parse and extract details from URL.
HTTP Headers Parser
Parse HTTP Headers for any URL.
URL Unshortener
Unshorten a URL and find the original.
HTTP Status Code Checker
Check HTTP Status Codes from URLs
PDF to Word Converter
Convert your PDF files to editable Word Documents.
Word to PDF Converter
Convert your Word Documents to portable PDF files natively.
PDF to Image Converter
Convert your PDF documents into high-quality images instantly.
Word to Image Converter
Convert your Word Documents into image files utilizing secure native processing.
Word to HTML Converter
Convert your Word Documents directly into clean HTML files seamlessly.
PDF to HTML Converter
Convert PDF text documents seamlessly into safely structured HTML pages.
PDF to EPUB Converter
Extract PDF texts and package them into perfectly structured EPUB e-book formats natively.
PDF to FB2 Converter
Convert PDF text streams into beautifully responsive FB2 e-book files natively.
EPUB to PDF Converter
Convert complex e-Reader EPUB archives into universally readable PDF document formats.
FB2 to PDF Converter
Render FictionBook FB2 formatting securely natively out into PDF layouts.
FB2 to EPUB Converter
Convert FictionBook FB2 e-books into universally compatible EPUB archives.
EPUB to FB2 Converter
Convert EPUB e-book archives into FictionBook FB2 XML format natively.
SRT to VTT Converter
Easily convert SRT subtitle files to WebVTT format for web video compatibility.
VTT to SRT Converter
Convert WebVTT subtitle files to the widely supported SRT format for offline video players.
Whitespace Normalizer
Clean up messy text by removing extra spaces, tabs, and empty lines while normalizing whitespace for better formatting.
Text to List Converter
Convert comma-separated or line-separated text into formatted lists, including bullet points, numbered lists, and task lists.
Text Diff Checker
Compare two pieces of text and visualize the differences instantly with side-by-side or inline views.
AI Content Detector
Scan any document directly analyzing mathematical heuristics to evaluate ChatGPT or AI probability securely offline.
AI-Ready Prompt Optimizer
Transform your messy thoughts into professional, high-performing AI prompts for ChatGPT, Claude, and Gemini.
Text to Speech
Synthesize and download realistic voices into an offline MP3 audio file natively.
Grammar Checker
Find and fix spelling, grammar, and punctuation mistakes instantly.
Text Cleaner
Text Cleaner Tool.
E-Mail Extractor
Extract E-Mails from Text
URL Extractor
Extract URLs from Text
Word Count
Count the Words & Letters in Text.
Text Separator
Separate Text based on Characters.
Text To Slug
Convert Text to Slug \/ Permalink.
Duplicate Lines Remover
Delete duplicate lines from text.
Line Break Remover
Remove Line Breaks from Text
Text Replacer
Replace any string occurences in text.
Text Reverser
Reverse any piece of text.
Word Density Counter
Find out the density of words in text.
Palindrome Checker
Check whether a string is a palindrome or not.
Case Converter
Change the case of text.
Randomize \/ Shuffle Text Lines
This online tool randomizes \/ shuffle text lines provided as input. Get the random lines.
Text Repeater
Text repeater is an online tool to generate a single word or string multiple times.
Paste & Share Text
Online Text Sharing easy way to share text online.
Lorem Ipsum Generator
Generate placeholder lorem ipsum words & paragraphs.
HTML Tags Stripper
Get Rid of HTML Tags in Code.
Invisible Text Generator
Generate invisible text and zero-width characters for blank usernames, social media bios, or bypassing character limits.
Sentence & Paragraph Counter
Count sentences, paragraphs, words, and characters in your text with real-time analysis.
Add\/Remove Line Numbers
Quickly add sequential numbers to your text lines or strip existing numbers from your content.
Text Line Joiner
Merge multiple lines of text into a single line using a custom separator like a comma, semicolon, or space.
Alphabetical Line Sorter
Organize lists and text blocks by sorting lines alphabetically in ascending or descending order.
Markdown to Text
Convert Markdown formatted content into clean, plain text by stripping all syntax and formatting.
Morse Code Converter
Easily encode text into Morse code or decode Morse code back into plain, readable text.
NATO Phonetic Converter
Convert text into the standard NATO phonetic alphabet for clear communication and spelling.
Text Line Wrapper
Automatically wrap long lines of text at a specific character length for better readability and formatting.
Braille Translator
Instantly convert standard English text into Braille characters or translate Braille back into readable text.
Text to ASCII Art
Transform your plain text into stylized ASCII art banners for use in comments, documentation, and social media.
Readability Score Calculator
Analyze text readability and complexity using industry-standard formulas like Flesch-Kincaid and Gunning Fog.
Keyword Extractor
Extract the most important keywords and phrases from your text instantly.
Text Similarity Checker
Compare two documents or text snippets to determine their percentage of similarity and differences.
Fancy Unicode Text Generator
Convert standard text into stylish, decorative fonts using unique Unicode characters for social media and profiles.
Text to Handwriting Converter
Transform digital text into realistic handwriting on lined notebook paper for a personal, hand-written aesthetic.
E-Mail Validator
Validate emails individually or in bulk.
HTML Code Editor
Free online HTML code editor with instant live preview. Enter your code in the editor and see the preview changing as you type. Compose your documents easily without installing any program.
JSON Viewer
View, format, and validate JSON data instantly within an interactive visual tree.
E-Mail Extractor
Extract E-Mails from Text
Code Syntax Highlighter
Create beautiful, shareable images of your code snippets instantly.
Regex Tester
Test your regular expressions in real-time with syntax highlighting and a cheatsheet.
Cron Expression Generator
Easily build and understand cron job schedules with a human-readable description and cheatsheet.
SQL Beautifier
Format SQL Queries
Source Code Downloader
Download any webpage's source code
JSON to YAML
Convert JSON data to YAML format instantly.
YAML to JSON
Convert YAML data to JSON format instantly.
Markdown To HTML
Convert Markdown format to HTML.
HTML To Markdown
Convert HTML Documents to Markdown.
CSV To JSON
Convert CSV to JSON Format
JSON To CSV
Convert JSON to CSV Format
JSON to TSV
Convert JSON data to TSV format instantly.
JSON To Xml
It helps to convert your JSON data to XML format.
TSV to JSON
Convert TSV data to JSON format instantly.
XML To JSON
It helps to convert your XML data to JSON format.
HTML Minifier
Minify your HTML Code for size reduction.
CSS Minifier
Minify your CSS code for size reduction.
JS Minifier
Minify your JS code for size reduction.
HTML Formatter
Format HTML code that is unformatted.
CSS Formatter
Format CSS code that is unformatted.
JS Formatter
Format JS code that is unformatted.
RGB To Hex
Convert RGB Colors to Hexcodes.
Hex To RGB
Convert Hex Colors to RGB.
Json Beautifier
Online JSON Viewer, JSON Beautifier and Formatter to beautify and tree view of JSON data
Json Validator
JSON Validator is the free online validator tool for JSON.
Timestamp Converter
Convert to & from UNIX Timestamps.
JWT Encoder \/ Decoder
Easily decode, verify, and encode JSON Web Tokens (JWT) directly from your browser.
HTML Entity Encode
Encode HTML into HTML Entities.
HTML Entity Decode
Decode HTML Entities into HTML.
URL Encoder
Encode your URL to make them transmission-safe.
URL Decoder
Decode any URL that has been encoded.
Text to Binary
Convert \/ Encode text to Binary.
Binary to Text
Convert \/ Decode Binary to Text.
Text to Base64
Encode Text to Base64.
Base64 To Text
Encode Base64 To Text.
ROT13 Encoder
Encode data into ROT13
ROT13 Decoder
Decode ROT13 encoded data.
Unicode to Punycode
Convert Unicode to Punycode.
Punycode to Unicode
Convert Punycode to Unicode.
Encode Quoted Printable
To encode a regular text to Quoted Printable, type in the box on top and click the Encode button.
Decode Quoted Printable
To decode a regular text to Quoted Printable, type in the box on top and click the Decode button.
Password Generator
Generate secure random passwords.
Password Strength Test
Check the strength of your Passwords
MD5 Generator
Generate MD5 hashes from text.
SHA Generator
Generate SHA hashes from text.
Bcrypt Generator
Generate Bcrypt Hashes
Hash Generator
Generate different types of hashes.
UUIDv4 Generator
Generate UUIDv4 IDs
Security Headers Auditor
Audit the security headers of any website for better SEO and protection.
Security Headers & Web Firewall (WAF) Auditor
Audit your website for security headers, detect Web Firewalls (WAF), and improve your site's protection.
Safe Browsing Checker
Check if a website is safe to visit and free from malware.
SSL Checker
Verify SSL Certificate of any website.
JS Obfuscator
Protect your JavaScript code by obfuscating it.
Credit Card Validator
Validate any Credit Card Details
Email Header Decoder
Parse raw email headers into a human-readable format to analyze sender info, routing hops, and security flags.
CSP Header Generator
Create secure Content Security Policy (CSP) headers for your website.
Security.txt Generator
Create a security.txt file to help researchers report vulnerabilities.
Google Dorking Assistant
Generate advanced Google search queries for security reconnaissance.
IDN\/Punycode Phishing Detector
Identify domain homograph attacks using Punycode and Unicode characters.
CVE Lookup Tool
Search and analyze Common Vulnerabilities and Exposures (CVE) details.
SSH Config Generator
Create professional SSH client configuration files for easy server access.
AES-256 Encryption\/Decryption
Securely encrypt and decrypt text using the industry-standard AES-256 algorithm.
Random Secret Key Generator
Generate high-entropy random keys for APP_KEY, JWT secrets, and secure application credentials.
Browser Fingerprint Audit
Analyze your browser's unique fingerprint and identify potential privacy leaks.
DNS Leak Tester
Check if your DNS queries are leaking and identifying your true location.
Glitch Text Generator
Zalgo Text Generator \/ Glitch Text Generator
Bubble Text Generator
Bubble text gives your letters a fun appearance.
Upside Down Text Generator
Upside-down text flips your letters and symbols.
Dice Roller
Roll a dice online.
Virtual Coin Flip
Coin Flip is an online heads or tails coin toss simulator.
Aim Trainer
Aim Trainer is a free browser game that is specifically designed to improve the players aim.
Count Down Timer
Countdown Timer that counts down in seconds, minutes and hours.
Stop Watch
Fast Stopwatch and Online Countdown timer always available when you need it.
World Clock
The time zone abbreviations and acronyms worldwide.
What is My Browser
What browser do I have? Find out my browser.
Date Picker Calendar
Date Picker Calendar allow the selection of a specific date and year.
YouTube Thumbnail Downloader
Download YouTube Thumbnails
Zodiac Sign Finder
Discover your zodiac sign, elemental nature, and ruling planet based on your date of birth.
Fake Identity Generator
Instantly generate comprehensive random personas including names, addresses, and bios for testing or creative use.
Leet Speak Converter
Transform your text into \\\1337\\\ speak by replacing standard characters with numbers and symbols.
English to GenZ Converter
Transform your standard English text into Gen Z slang and internet culture speak.
Age Calculator
Calculate Age & Give Important Info About Your Age
Between Dates Calculator
Calculate Days, Weeks, Months etc between two dates.
BMI Calculator
Body mass index (BMI) is a measure of body fat based on height and weight that applies to adult men and women.
Profit Calculator
Calculate Your Profit in Future
Interest Calculator
Calculate Interest on Amount overtime.
GPA Calculator
Easy To Use GPA Calculator Tool
Scientific Calculator
Scientific Calculator with double-digit precision that supports both button click and keyboard type.
Currency Converter
Simple Currency Converter Tool
Random Number Generator
Generate numbers randomly with constraints.
Percentage Calculator
Calculate percentages, percentage increases, and percentage decreases instantly with this versatile mathematical tool.
Loan (EMI) Calculator
Calculate Equated Monthly Installments (EMI) for any loan with detailed interest and total payment breakdowns.
Sales Tax \/ GST Calculator
Quickly calculate the total price including tax or extract the tax amount from a gross total.
Binary Operations Calculator
Perform arithmetic operations on binary numbers (Add, Subtract, Multiply, Divide) with instant conversion to decimal and hex.
Password Entropy Calculator
Measure the mathematical strength of your passwords using bit entropy to determine how resistant they are to brute-force attacks.
Standard Deviation Calculator
Calculate the sample and population standard deviation, variance, and mean for a set of numbers.
Decimal to Fraction Calculator
Convert any decimal number into its simplest fraction form, including mixed numbers and improper fractions.
Calorie (BMR) Calculator
Estimate your daily calorie needs based on your Basal Metabolic Rate (BMR) and activity level using the Mifflin-St Jeor equation.
Tip Calculator
Quickly calculate tips and split bills among friends with real-time per-person breakdowns.
Time Duration Calculator
Calculate the exact time difference between two dates and times with detailed breakdowns.
Aspect Ratio Calculator
Calculate the aspect ratio of any image or video, or scale dimensions while maintaining a fixed ratio.
Ohm's Law Calculator
Calculate Voltage, Current, Resistance, and Power instantly by entering any two known values.
Macronutrient Calculator
Break down your daily calorie goal into Protein, Carbohydrates, and Fats based on your fitness goals.
Electricity Cost Calculator
Calculate the estimated cost of running any household appliance based on its wattage and your local energy rates.
Pet Real Age Calculator
Calculate your pet's equivalent human age using scientifically-backed aging curves for dogs and cats.
Open Port Checker
The open port checker is a tool you can use to check your external IP address and detect open ports on your connection.
Subdomain Finder
Discover subdomains for any domain using public records and certificates.
HTTP Methods Auditor
Check which HTTP methods are enabled on a server to identify potential security risks.
WebRTC Leak Test
Check if your real IP address is leaking through WebRTC.
Website Status Checker
Check whether a website is online or not.
Ping
Measure Ping for any Address.
IP To Hostname
Get Hostname from any IP Address
Hostname To IP
Get IP Address from a Hostname
IP Information
Get information about any IP
MX Lookup
Tool to find domains MX servers.
User Agent Finder
Find out your user agent.
Whats My IP
Find out your IP Address.
Dns Lookup
Online dnslookup is a web based DNS client that queries DNS records for a given domain name.
IP Subnet Calculator
IPv4 and IPv6 Subnet Calculator
ASN Lookup
Identify and retrieve detailed information about Autonomous System Numbers (ASN), including organization names, countries, and assigned IP ranges.
Traceroute Online
Trace the full network path of a request to any domain or IP address, identifying every hop and measuring latency along the route.
IP Blacklist Check
Check if a domain or IP address is listed in major DNSBL (DNS-based Blackhole List) databases and other reputation services for suspicious activity.
Email Blacklist Check
Check if an email address, its domain, or its mail servers are listed in major DNSBL and anti-spam databases.
DNS Propagation Check
Verify the worldwide propagation of your DNS records across multiple global name servers and locations.
Website Technologies Check
Analyze a website to detect its tech stack, server configurations, SSL certificate details, and hosting provider.
Memory \/ Storage Converter
Convert between data storage units like Kilobytes, Megabytes, and Terabytes.
Length Converter
A versatile tool to convert between length and distance units like Metres, Kilometres, Miles, and Feet.
Speed Converter
Convert between speed units like Kilometres per hour, Miles per hour, Knots, and Metres per second.
Temperature Converter
A quick utility to convert between temperature scales like Celsius, Fahrenheit, and Kelvin.
Weight Converter
Convert between mass and weight units like Kilograms, Pounds, Ounces, and Grams.
Area Converter
Convert between area units like Square Metres, Acres, Hectares, and Square Feet.
Volume Converter
Convert between volume and capacity units like Litres, Gallons, Cubic Metres, and Millilitres.
Power Converter
Convert between power units like Watts, Horsepower, Kilowatts, and BTUs per hour.
Pressure Converter
Convert between pressure units like Pascals, PSI, Bar, and Atmospheres.
Pace Converter
Convert between pace units like Minutes per Kilometre and Minutes per Mile.
Fuel Consumption Converter
Convert between fuel efficiency units like MPG and Litres per 100km.
Time Converter
Convert between time units like Seconds, Minutes, Hours, Days, and Weeks.
Angle Converter
Convert between angle units like Degrees, Radians, Gradians, and Circles.
Torque Converter
Convert between torque units like Newton-metres and Pound-feet.
Energy Converter
Convert between energy units like Joules, Calories, and BTUs.
Frequency Converter
Convert between frequency units like Hertz, Kilohertz, and Megahertz.
Voltage Converter
A comprehensive tool to convert between various voltage units like Volts, Millivolts, Kilovolts, and more.
Current Converter
A comprehensive tool to convert between various electrical current units like Amperes, Milliamperes, and more.
Illuminance Converter
A precise tool to convert between various illuminance units like Lux, Foot-candles, and Phots.
Luminance Converter
A specialized tool to convert between luminance units like Candela per square metre (nits), Stilbs, and Lamberts.
Density Converter
A versatile tool to convert between various density units like Kilograms per cubic metre, Grams per cubic centimetre, and Pounds per cubic foot.
Viscosity Converter
A specialized tool to convert between various dynamic viscosity units like Pascal-seconds, Poise, and Centipoise.
Capacitance Converter
A precise tool to convert between various capacitance units like Farads, Microfarads, and Picofarads.
Force Converter
A fundamental tool to convert between force units like Newtons, Pound-force, and Kilogram-force.

Performing security verification

We are verifying that you are a genuine visitor before opening Regex Tester.

A powerful tool for developers to test and debug regular expressions. Features real-time matching, group capture visualization, syntax error reporting, and a comprehensive regex cheatsheet.

Related Tools

Punycode to Unicode

Convert Punycode to Unicode.

Base64 To Text

Encode Base64 To Text.

ROT13 Decoder

Decode ROT13 encoded data.

CSV To JSON

Convert CSV to JSON Format

TSV to JSON

Convert TSV data to JSON format instantly.

JSON to YAML

Convert JSON data to YAML format instantly.

E-Mail Extractor

Extract E-Mails from Text

JWT Encoder / Decoder

Easily decode, verify, and encode JSON Web Tokens (JWT) directly from your browser.

Contact

Missing something?

Feel free to request missing tools or give some feedback using our contact form.