Image Tools
Add Watermark to Images
Add text or image watermarks to multiple images with position, opacity, rotation, and tiling controls.
All tools run in your browser.
Free, private, fast, and efficient tools for everyday tasks. Ads help keep the site running.
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Image Tools
Resize, crop, compress, convert, and inspect images directly in the browser.
Documents & Publishing
Create, convert, arrange, and export Markdown, PDF, diagrams, and other document-ready content in your browser.
Text Tools
Count, clean, transform, sort, and prepare text for writing, office work, and publishing.
Developer Tools
Format, encode, decode, generate, and inspect data used in everyday development.
Converters & Calculators
Unit conversion and compact calculators for dates, money, percentages, and everyday math.
Passport & ID Photos
Passport, visa, ID, and exam photo tools with editable requirements and official source links.
Device Tests
Check keyboards, mice, screens, cameras, microphones, touch input, sensors, and game controllers in your browser.
All tools
174 toolsImage Tools
Resize, crop, compress, convert, and inspect images directly in the browser.
Image Tools
AVIF to JPG
Convert one or more AVIF images to adjustable-quality JPG files locally.
Image Tools
Favicon Generator
Create favicon.ico, common PNG icons, an Apple touch icon, and web app icons from one image.
Image Tools
Image Color Picker
Click an image to pick multiple exact colors, then copy or download your palette.
Image Tools
Image Compressor
Compress JPG, PNG, and WebP images locally in your browser.
Image Tools
Image Cropper
Crop an image to a custom size or common aspect ratio.
Image Tools
Image Metadata Viewer
Inspect image dimensions, format, EXIF camera details, orientation, date, color space, and GPS presence locally.
Image Tools
Image Resizer
Resize JPG, PNG, and WebP images in your browser and download the result.
Image Tools
Image to PDF
Combine multiple images into one PDF, reorder pages, and choose page settings without uploading files.
Image Tools
JPG to PNG
Convert JPG images to PNG in your browser.
Image Tools
JPG to WebP
Convert JPG images to smaller WebP files locally.
Image Tools
PNG to JPG
Convert PNG images to JPG with a chosen background.
Image Tools
QR Code Generator
Create a QR code from text or a URL locally.
Image Tools
Remove EXIF Metadata
Re-encode images locally to remove embedded EXIF, camera, date, and GPS metadata before sharing.
Image Tools
Resize Image to 100KB
Compress and resize images locally to try to keep each result under 100KB.
Image Tools
Resize Image to 200KB
Compress and resize images locally to try to keep each result under 200KB.
Image Tools
Rotate and Flip Image
Rotate or mirror an image and download the result.
Image Tools
SVG to PNG
Safely render an SVG as a transparent or colored PNG at a selected width and scale.
Image Tools
WebP to JPG
Convert WebP images to JPG in your browser.
Image Tools
Wi-Fi QR Code Generator
Create a downloadable Wi-Fi connection QR code locally.
Documents & Publishing
Create, convert, arrange, and export Markdown, PDF, diagrams, and other document-ready content in your browser.
Documents & Publishing
Add Watermark to PDF
Add a diagonal text watermark to all or selected PDF pages in the browser.
Documents & Publishing
Code to Image
Turn highlighted source code into a polished PNG with themes, line numbers, and background controls.
Documents & Publishing
Image to PDF
Combine multiple images into one PDF, reorder pages, and choose page settings without uploading files.
Documents & Publishing
Markdown Preview
Write Markdown and preview simple formatted HTML locally.
Documents & Publishing
Markdown to Card
Design an attractive knowledge card from Markdown for social posts, saved notes, and visual summaries.
Documents & Publishing
Markdown to Carousel
Split Markdown into polished social carousel pages and download every high-resolution image in one ZIP.
Documents & Publishing
Markdown to HTML
Convert Markdown into sanitized HTML in your browser.
Documents & Publishing
Markdown to Image
Turn Markdown into polished, shareable images with social sizes, visual themes, code highlighting, and local PNG export.
Documents & Publishing
Markdown to Long Image
Convert tutorials, notes, and articles into a clean long PNG with controlled typography and browser-only export.
Documents & Publishing
Merge PDF
Combine multiple PDF files in your chosen order directly in the browser.
Documents & Publishing
Mermaid Diagram Studio
Create clear diagrams for technical documents, reports, papers, and presentations, then export publication-ready SVG or high-resolution PNG.
Documents & Publishing
PDF Metadata Viewer
Inspect PDF title, author, dates, producer, keywords, and page count locally.
Documents & Publishing
PDF Page Counter
Count the pages in a PDF locally without uploading the document.
Documents & Publishing
PDF to Images
Render selected PDF pages as PNG or JPG images with local previews and downloads.
Documents & Publishing
Reorder PDF Pages
Move PDF pages into a new order and download the rearranged document locally.
Documents & Publishing
Rotate PDF Pages
Rotate all or selected PDF pages by 90, 180, or 270 degrees locally.
Documents & Publishing
Split PDF
Extract selected pages or page ranges into a new PDF without uploading the file.
Text Tools
Count, clean, transform, sort, and prepare text for writing, office work, and publishing.
Text Tools
Base64 Encode and Decode
Encode or decode UTF-8 Base64 text locally in your browser.
Text Tools
Base64 File Converter
Convert files to Base64 and decode Base64 back into downloadable files.
Text Tools
Case Converter
Convert text to uppercase, lowercase, title case, or sentence case in your browser.
Text Tools
Character Counter
Count characters, words, lines, and paragraphs instantly.
Text Tools
Email Normalizer
Normalize, validate, deduplicate, and lowercase email address lists.
Text Tools
HTML Entity Encode and Decode
Convert special text characters and HTML entities locally in your browser.
Text Tools
Lorem Ipsum Generator
Generate placeholder paragraphs, sentences, or words.
Text Tools
Markdown Preview
Write Markdown and preview simple formatted HTML locally.
Text Tools
Remove Duplicate Lines
Remove repeated lines from text while preserving their order.
Text Tools
Sort Lines
Sort, reverse, or randomize text lines in your browser.
Text Tools
Text Diff Checker
Compare two pieces of text and see changed lines.
Text Tools
Text to Binary
Convert UTF-8 text and groups of 8-bit binary locally.
Text Tools
Text to Slug
Turn a title or phrase into a clean URL slug.
Text Tools
Trim Whitespace
Clean leading, trailing, and repeated whitespace from text.
Text Tools
Unicode Escape Converter
Convert text to Unicode escapes and back locally.
Text Tools
URL Encode and Decode
Encode or decode URL components locally without sending your text to a server.
Text Tools
URL List Cleaner
Validate, trim, and deduplicate a list of URLs.
Text Tools
URL Parameter Extractor
Extract repeated and single query parameters from a URL.
Text Tools
Word Counter
Count words, characters, sentences, paragraphs, and estimated reading time in your browser.
Developer Tools
Format, encode, decode, generate, and inspect data used in everyday development.
Developer Tools
AES Text Encryption
Encrypt and decrypt text locally with AES-256-GCM and a password.
Developer Tools
Base64 Encode and Decode
Encode or decode UTF-8 Base64 text locally in your browser.
Developer Tools
Base64 File Converter
Convert files to Base64 and decode Base64 back into downloadable files.
Developer Tools
Basic Auth Generator
Create a Basic Authorization header locally.
Developer Tools
bcrypt Generator
Create a bcrypt password hash locally in your browser.
Developer Tools
chmod Calculator
Build a numeric chmod command from owner, group, and other permissions.
Developer Tools
Code to Image
Turn highlighted source code into a polished PNG with themes, line numbers, and background controls.
Developer Tools
Cookie Parser
Parse a Cookie header into structured JSON locally.
Developer Tools
Cron Expression Builder
Build a five-field cron expression locally.
Developer Tools
CSS Selector Tester
Test a CSS selector against pasted HTML and inspect matches.
Developer Tools
CSV to JSON
Convert CSV with quoted fields to JSON locally.
Developer Tools
cURL to Code Converter
Convert cURL commands to JavaScript Fetch and Python Requests locally.
Developer Tools
Device Information
View browser-visible device and environment information locally.
Developer Tools
Docker Run to Compose
Convert a simple docker run command into Compose YAML locally.
Developer Tools
Email Normalizer
Normalize, validate, deduplicate, and lowercase email address lists.
Developer Tools
Git Command Builder
Build common Git commands without running them.
Developer Tools
Hash Generator
Create SHA hashes locally using your browser's Web Crypto API.
Developer Tools
HMAC Generator
Create an HMAC locally with Web Crypto.
Developer Tools
HTML Entity Encode and Decode
Convert special text characters and HTML entities locally in your browser.
Developer Tools
HTML Link Extractor
Extract unique links from pasted HTML without fetching a page.
Developer Tools
HTML Metadata Extractor
Extract title, description, canonical, robots, and Open Graph metadata.
Developer Tools
HTML, CSS & JS Minifier
Remove comments and redundant whitespace from simple HTML, CSS, or JavaScript locally.
Developer Tools
HTTP Header Parser
Parse pasted HTTP headers into structured JSON.
Developer Tools
HTTP Status Lookup
Look up common HTTP status codes locally.
Developer Tools
IP Range Expander
Expand small IPv4 ranges into an address list locally.
Developer Tools
IPv4 Address Converter
Convert an IPv4 address to binary, integer, and hexadecimal locally.
Developer Tools
IPv4 Subnet Calculator
Calculate an IPv4 network, mask, broadcast, and usable range locally.
Developer Tools
IPv6 ULA Generator
Generate a random locally assigned IPv6 ULA /48 prefix.
Developer Tools
JavaScript Formatter
Format JavaScript with a local browser formatter.
Developer Tools
JSON Diff
Compare two JSON documents locally in your browser.
Developer Tools
JSON Formatter and Validator
Format, validate, and minify JSON locally in your browser.
Developer Tools
JSON Minifier
Minify valid JSON locally in your browser.
Developer Tools
JSON Schema Validator
Validate JSON data against a JSON Schema entirely in your browser.
Developer Tools
JSON to CSV
Convert a JSON array of objects to CSV, preview it, and download it locally.
Developer Tools
JSON to TOML
Convert compatible JSON data to TOML locally.
Developer Tools
JSON to XML
Convert JSON objects to simple XML locally.
Developer Tools
JSON to YAML
Convert valid JSON to YAML locally.
Developer Tools
JSON Viewer
Inspect and format JSON locally in your browser.
Developer Tools
JSON-LD Extractor
Extract and parse JSON-LD blocks from pasted HTML.
Developer Tools
JWT Decoder
Decode a JSON Web Token payload locally. This tool does not verify signatures.
Developer Tools
Keyboard Event Inspector
Inspect key, code, modifiers, and legacy keyCode for a keyboard event.
Developer Tools
MAC Address Generator
Generate locally administered random MAC addresses locally.
Developer Tools
MAC Vendor Lookup
Look up a MAC address prefix in a bundled IEEE OUI database.
Developer Tools
Markdown to HTML
Convert Markdown into sanitized HTML in your browser.
Developer Tools
Mermaid Diagram Studio
Create clear diagrams for technical documents, reports, papers, and presentations, then export publication-ready SVG or high-resolution PNG.
Developer Tools
Meta Tag Generator
Create title, description, and Open Graph tags locally.
Developer Tools
MIME Type Lookup
Look up common file extensions and MIME types locally.
Developer Tools
Password Generator
Generate a random password locally.
Developer Tools
Password Strength Analyzer
Estimate password entropy and character-set strength locally.
Developer Tools
QR Code Generator
Create a QR code from text or a URL locally.
Developer Tools
Random Port Generator
Generate random unprivileged port numbers locally.
Developer Tools
Regex Tester
Test JavaScript regular expressions with live matches.
Developer Tools
Request Header Builder
Build a JSON request-header object from key and value lines.
Developer Tools
Robots.txt Generator
Generate a basic robots.txt from a list of disallowed paths.
Developer Tools
Robots.txt Tester
Test a path against pasted Allow and Disallow rules.
Developer Tools
RSA Key Pair Generator
Generate a 2048-bit RSA-OAEP key pair and export PEM locally.
Developer Tools
Sitemap XML Generator
Generate a standards-based XML sitemap from a URL list.
Developer Tools
Sitemap XML Validator
Parse a sitemap and validate its URL locations locally.
Developer Tools
SQL Formatter
Format SQL statements locally in your browser.
Developer Tools
Text & Hex Converter
Convert UTF-8 text and hexadecimal bytes locally.
Developer Tools
Text Diff Checker
Compare two pieces of text and see changed lines.
Developer Tools
Text to Binary
Convert UTF-8 text and groups of 8-bit binary locally.
Developer Tools
Text to NATO Alphabet
Spell letters with the NATO phonetic alphabet locally.
Developer Tools
Text to Slug
Turn a title or phrase into a clean URL slug.
Developer Tools
Token Generator
Generate a random token locally.
Developer Tools
TOML to JSON
Convert TOML configuration into formatted JSON locally.
Developer Tools
TOML to YAML
Convert TOML configuration into YAML locally.
Developer Tools
TOTP Generator
Generate a local six-digit TOTP code from a Base32 secret.
Developer Tools
ULID Generator
Generate sortable ULIDs using browser cryptographic randomness.
Developer Tools
Unicode Escape Converter
Convert text to Unicode escapes and back locally.
Developer Tools
Unix Timestamp Converter
Convert Unix timestamps and readable dates in your browser.
Developer Tools
URL Encode and Decode
Encode or decode URL components locally without sending your text to a server.
Developer Tools
URL List Cleaner
Validate, trim, and deduplicate a list of URLs.
Developer Tools
URL Normalizer
Normalize URL hosts, ports, fragments, and query ordering.
Developer Tools
URL Parameter Extractor
Extract repeated and single query parameters from a URL.
Developer Tools
URL Parser
Break a URL into its protocol, host, path, and parameters.
Developer Tools
User-Agent Parser
Inspect a user-agent string for browser, operating system, and device clues.
Developer Tools
UUID Generator
Generate one or many UUID v4 values.
Developer Tools
Wi-Fi QR Code Generator
Create a downloadable Wi-Fi connection QR code locally.
Developer Tools
XML Formatter
Format and validate XML with readable indentation in your browser.
Developer Tools
XML to JSON
Parse simple XML into JSON locally.
Developer Tools
XPath Tester
Test an XPath expression against pasted HTML locally.
Developer Tools
YAML to JSON
Parse YAML and format it as JSON locally.
Developer Tools
YAML to TOML
Convert YAML data into TOML configuration locally.
Developer Tools
YAML Viewer
Parse YAML and inspect its structured JSON representation locally.
Converters & Calculators
Unit conversion and compact calculators for dates, money, percentages, and everyday math.
Converters & Calculators
Age Calculator
Calculate age in years, months, and days from a birth date.
Converters & Calculators
Aspect Ratio Calculator
Calculate matching image or video dimensions for an aspect ratio.
Converters & Calculators
Average Calculator
Calculate an arithmetic or weighted average from a list of values.
Converters & Calculators
Basic Calculator
Use a familiar button calculator for arithmetic, parentheses, percentages, memory, keyboard input, and calculation history.
Converters & Calculators
BMI Calculator
Calculate body mass index using metric measurements.
Converters & Calculators
Date Difference Calculator
Find the number of days between two dates.
Converters & Calculators
Discount Calculator
Calculate the sale price after a percentage discount.
Converters & Calculators
Equation Solver
Solve linear and quadratic equations or a two-variable linear system, including real and complex quadratic roots.
Converters & Calculators
Fraction Calculator
Add, subtract, multiply, or divide two fractions and receive a reduced fraction and decimal result.
Converters & Calculators
Loan Payment Calculator
Estimate monthly loan payments and total interest. For planning only.
Converters & Calculators
Matrix Calculator
Calculate matrix addition, subtraction, multiplication, determinant, inverse, transpose, and reduced row echelon form for matrices up to 4 by 4.
Converters & Calculators
Meeting Time Planner
Choose participant locations on the map and find meeting times inside everyone's selected work hours and weekdays.
Converters & Calculators
Multi-city Time Comparison
Choose any map locations and compare the same 24-hour period, work hours, and calendar-day changes.
Converters & Calculators
Percentage Calculator
Calculate percentages, percentage change, and percentage of a number.
Converters & Calculators
Quadratic Formula Calculator
Solve ax² + bx + c = 0 and inspect the discriminant, roots, and parabola vertex.
Converters & Calculators
Random Number Generator
Generate random integers in a chosen range.
Converters & Calculators
Ratio and Proportion Calculator
Solve one missing value in A:B = C:D by leaving exactly one input blank.
Converters & Calculators
Scientific Calculator
Evaluate scientific expressions with powers, roots, logarithms, trigonometry, constants, angle modes, memory, and history.
Converters & Calculators
Statistics Calculator
Analyze a numeric dataset with descriptive statistics and optionally calculate a two-variable linear regression.
Converters & Calculators
Time Zone Converter
Choose any locations on the map and convert a local date and time with daylight-saving and date changes handled automatically.
Converters & Calculators
Tip Calculator
Calculate a tip and split a bill between people.
Converters & Calculators
Unit Converter
Convert length, weight, temperature, area, volume, speed, and data storage units.
Converters & Calculators
Unix Timestamp Converter
Convert Unix timestamps and readable dates in your browser.
Converters & Calculators
World Clock
Click anywhere on an interactive world map and compare live local dates, times, UTC offsets, and simple day or night status.
Passport & ID Photos
Passport, visa, ID, and exam photo tools with editable requirements and official source links.
Passport & ID Photos
Canada Passport Photo Maker
Prepare a Canada passport photo layout in your browser and check the official requirements.
Passport & ID Photos
ID Photo Maker
Crop a photo to a custom ID-photo size locally.
Passport & ID Photos
Japan Passport Photo Maker
Create a Japan passport photo preview using editable photo requirements and official source links.
Passport & ID Photos
Japan Visa Photo Maker
Prepare a Japan visa photo layout in your browser and check the official application form.
Passport & ID Photos
UK Passport Photo Maker
Prepare a UK passport photo layout in your browser and check the official requirements.
Passport & ID Photos
US Passport Photo Maker
Prepare a 2 x 2 inch US passport-style photo, then check the correct official rules for a passport, visa, or immigration application.
Device Tests
Check keyboards, mice, screens, cameras, microphones, touch input, sensors, and game controllers in your browser.
Device Tests
Accelerometer Test
Inspect live acceleration including gravity along the X, Y, and Z axes.
Device Tests
Dead Pixel Test
Cycle fullscreen solid colors to make dead, bright, or stuck pixels easier to spot.
Device Tests
Display Color Test
Inspect grayscale, RGB gradients, color bars, contrast, and banding by eye.
Device Tests
Double Click Test
Measure the interval between clicks and check whether double clicks register reliably.
Device Tests
Gamepad Test
Inspect connected controller buttons, triggers, axes, stick drift, and vibration support.
Device Tests
Gyroscope & Orientation Test
Read device orientation angles and visualize rotation after explicit permission.
Device Tests
Headphone Test
Verify headphone channel placement with separate left, right, and stereo test tones.
Device Tests
Keyboard Ghosting Test
Measure simultaneous key detection and identify combinations your keyboard may not register.
Device Tests
Keyboard Test
Check every physical key and see pressed and tested keys on a full keyboard layout.
Device Tests
Microphone Test
View a live waveform, input level, peak, and dominant frequency from your microphone.
Device Tests
Mouse Polling Rate Test
Estimate mouse event frequency in hertz while you move the pointer across the test area.
Device Tests
Mouse Test
Test left, right, middle, side buttons, wheel scrolling, and pointer movement.
Device Tests
Multi-Touch Test
Visualize active touch points and measure the maximum simultaneous contacts detected.
Device Tests
Online Audio Recorder
Record microphone audio locally, play it back, and download the recording.
Device Tests
Online Mirror
Use your front camera as a private mirrored preview and save a snapshot when needed.
Device Tests
Refresh Rate Test
Estimate display refresh rate and frame timing variation from browser animation frames.
Device Tests
Screen Resolution Checker
Inspect screen size, browser viewport, pixel ratio, color depth, and orientation.
Device Tests
Screen Test
Open solid colors, gradients, color bars, and grids in fullscreen for visual inspection.
Device Tests
Speaker Test
Play a short tone through the left, right, or both audio channels.
Device Tests
Touch Screen Test
Trace across a fullscreen grid to check touch coverage and unresponsive areas.
Device Tests
Vibration Test
Check browser vibration support with short, long, and patterned feedback.
Device Tests
Webcam Test
Preview a camera locally, inspect stream settings, switch devices, and take a photo.