Free Online Tools
For Everyone.

PDF Merge

Combine multiple PDF files into one with drag-to-reorder, thumbnail previews, and page range selection from each file

PDF Compress

Reduce PDF file size with 3 quality presets for web, print, and archive with size estimate preview and DPI control

PDF Split

Split PDF files with a visual page picker, split by range, every N pages, or extract specific pages with thumbnail previews

PDF to Image

Convert PDF pages to high-quality JPG, PNG, or WebP images with page range selection, DPI control, and batch ZIP download

PDF Sign

Add signatures to PDFs by drawing, typing, or uploading an image with live drag-and-drop placement and date stamps

PDF Unlock

Remove password protection from PDFs with auto-detection of encrypted files and clear wrong-password feedback

PDF Protect

Password-protect your PDFs with separate owner and user passwords, permission flags for print, copy, and edit

PDF Rotate

Rotate individual pages or all pages in a PDF with thumbnail grid preview and horizontal/vertical flip options

PDF Watermark

Add text or image watermarks to PDFs with diagonal, horizontal, or vertical placement, opacity, and page range controls

PDF OCR

Extract text from scanned PDFs using Tesseract.js OCR with language auto-detect and searchable PDF export

PDF Crop

Crop PDF pages with a visual drag-to-crop editor, apply to individual pages or entire document with live preview

PDF Form Filler

Auto-detect and fill interactive PDF form fields with tab navigation, field type indicators, and export

PDF Redact

Permanently black out sensitive content in PDFs with keyword search, draw redaction boxes, and permanent burn-in

PDF Page Numbers

Add page numbers to PDFs with 9 position options, custom formats like 'Page X of Y', font control, and skip options

PDF Repair

Fix corrupted PDF files with detailed issue detection, page recovery reporting, and automatic repair attempts

PDF Compare

Compare two PDFs side-by-side with synchronized scrolling, pixel diff overlay, text diff mode, and change summary

PDF Highlight

Highlight text in PDFs with 5 colors, add sticky note annotations, plus underline and strikethrough tools

PDF Annotate

Full annotation suite for PDFs with freehand drawing, arrows, rectangles, circles, and text boxes all in one tool

PDF Image Inserter

Insert images into PDF pages with drag-to-position placement, resize and rotate controls, and layer ordering

PDF Image Extractor

Extract all embedded images from any PDF with thumbnail previews, selective download, and batch ZIP export

PDF to Markdown

Convert PDF text content to clean Markdown with headings, lists, tables, and code block detection

PDF Resize

Change PDF page dimensions with preset sizes like A4, Letter, A3, Legal, or custom dimensions with content scaling

PDF Header/Footer

Add custom headers and footers with 6 text zones, smart tokens for page number, date, and title, with live preview

PDF Metadata

View and edit PDF document properties including title, author, subject, keywords, creator, and creation date

PDF Bookmarks

Manage PDF outline and bookmarks with a visual tree editor to add, remove, reorder, and set destination pages

PDF Dark Mode Converter

Convert PDFs to a dark color scheme by inverting backgrounds while preserving images for comfortable reading

PDF Flatten

Flatten all annotations and form fields in a PDF to make them permanent, ideal for sharing finalized documents

Image to PDF

Convert JPG and PNG images into a single PDF with drag-to-reorder, thumbnail previews, and instant download

PDF Stamp & Certify

Apply official stamps to PDFs — Approved, Confidential, Draft, Reviewed, and more — with custom positioning

Image Compressor

Compress images up to 90% smaller while maintaining visual quality, perfect for web optimization

Image Resizer

Resize images to exact pixel dimensions or by percentage while preserving aspect ratio and quality

Image Format Converter

Convert images between PNG, JPG, WebP, and BMP formats with quality control and batch support

Image Cropper

Crop images to custom dimensions with a visual drag-and-drop editor and preset aspect ratios

Image to Base64 Encoder

Convert any image to a Base64-encoded data URI for embedding directly in HTML, CSS, or JSON

Word Counter

Count words, characters, sentences, and paragraphs with readability scoring and keyword density analysis

Case Converter

Transform text between uppercase, lowercase, title case, camelCase, snake_case, and more formats instantly

Character Counter

Track character count with and without spaces in real time, perfect for tweets, meta descriptions, and SMS

Lorem Ipsum Generator

Generate professional placeholder text in paragraphs, sentences, or words for your designs and mockups

Text Diff Checker

Compare two blocks of text side-by-side with color-coded highlighting of every difference

Find and Replace

Powerful find and replace with full regex support, case matching, and bulk replacement capabilities

URL Slug Generator

Convert any text into a clean, URL-friendly slug optimized for SEO and web applications

Sort Lines

Sort lines of text alphabetically, numerically, or in reverse order with case-sensitive options

Duplicate Line Remover

Instantly remove duplicate lines from any text while preserving original order and formatting

Reverse Text

Reverse text by characters, words, or entire sentences for encoding, fun, or data manipulation

Empty Line Remover

Clean up text instantly by stripping all blank and empty lines with one click

Text Repeater

Repeat any text or string a specified number of times with custom separators and formatting options

Password Generator

Generate cryptographically strong passwords with custom length, character sets, and strength analysis

QR Code Generator

Create customizable QR codes for URLs, text, WiFi, email, and phone with color and size options

UUID Generator

Generate universally unique identifiers (UUID v4) for databases, APIs, and distributed systems

Random Number Generator

Generate truly random numbers within any custom range with optional decimal precision and bulk generation

Hash Generator

Generate secure hash values using SHA-1, SHA-256, SHA-384, and SHA-512 algorithms for data integrity

Barcode Generator

Generate industry-standard barcodes in CODE128, EAN-13, UPC-A, and other formats for print or digital use

Gradient Generator

Design beautiful linear and radial CSS gradients with a visual editor, color stops, and live code output

Random Color Generator

Generate random colors with instant HEX, RGB, and HSL values, plus copy-to-clipboard functionality

Box Shadow Generator

Design pixel-perfect CSS box shadows with real-time preview, multiple layers, and one-click code copying

Border Radius Generator

Craft custom CSS border-radius values with a visual drag editor and instant code generation

JSON Formatter

Format, validate, and beautify JSON data with syntax highlighting, error detection, and tree view

Base64 Encoder/Decoder

Encode and decode text or binary data in Base64 format for embedding images, APIs, and data transfer

Regex Tester

Test, debug, and validate regular expressions with real-time matching, group highlighting, and flag support

URL Encoder/Decoder

Encode and decode URLs and query parameters for safe transmission in web applications and APIs

HTML Encoder/Decoder

Encode and decode HTML entities, special characters, and Unicode symbols for safe web content

JWT Decoder

Decode and inspect JSON Web Token headers, payloads, and signatures with expiration time validation

Markdown Previewer

Write Markdown in a live editor and preview the rendered HTML output with full syntax support

Color Picker

Pick any color from a visual palette and get instant HEX, RGB, and HSL values ready to copy

CSS Minifier

Minify CSS code to reduce file size and improve page load performance with compression statistics

JavaScript Minifier

Minify and compress JavaScript code for production deployment with size reduction reporting

HTML Beautifier

Format and auto-indent messy HTML code into clean, readable markup with configurable indentation

Code Diff Checker

Compare two code snippets side by side with syntax-aware diffing and color-coded change highlighting

Percentage Calculator

Calculate percentages, percentage increases, decreases, and ratios with step-by-step breakdowns

Age Calculator

Calculate your exact age in years, months, days, hours, and minutes with zodiac sign and birthday countdown

BMI Calculator

Calculate your Body Mass Index, view your health category, and get personalized weight range recommendations

Loan Calculator

Calculate monthly loan payments, total interest, and view a full amortization schedule for any loan

Tip Calculator

Calculate tips at any percentage and split the total bill evenly between any number of people

Discount Calculator

Calculate final sale prices, total savings, and compare multiple discount percentages side by side

Compound Interest Calculator

Visualize how your investments grow over time with compound interest, contributions, and compounding frequency

Salary Converter

Convert your salary between hourly, daily, weekly, bi-weekly, monthly, and yearly rates instantly

GPA Calculator

Calculate your Grade Point Average by entering course grades and credit hours with weighted support

Date Difference Calculator

Calculate the exact number of days, weeks, months, and years between any two dates you choose

Fuel Cost Calculator

Estimate total fuel costs for any trip based on distance, vehicle efficiency, and current fuel prices

Percentage Change Calculator

Calculate the percentage increase or decrease between any two values with clear visual indicators

Unit Converter

Convert between length, weight, volume, temperature, speed, and area units with metric and imperial support

Color Converter

Convert colors seamlessly between HEX, RGB, HSL, and CMYK formats with live color preview

Timestamp Converter

Convert Unix timestamps to human-readable dates and back, with millisecond precision and timezone support

Timezone Converter

Convert times between any of the world's time zones with daylight saving time awareness

File Size Converter

Convert between bytes, kilobytes, megabytes, gigabytes, and terabytes with binary and decimal modes

Cooking Converter

Convert between cups, tablespoons, teaspoons, grams, ounces, and other kitchen measurements accurately

Number Base Converter

Convert numbers between binary, octal, decimal, and hexadecimal systems with real-time conversion

Roman Numeral Converter

Convert between Roman numerals and decimal numbers with validation and historical reference

Color Palette Generator

Generate harmonious color palettes with complementary, analogous, and triadic color scheme support

CSS Gradient Generator

Build stunning linear and radial CSS gradients with a visual color picker, angle control, and code export

Color Contrast Checker

Check WCAG 2.1 color contrast ratios to ensure your designs meet AA and AAA accessibility standards

Glassmorphism Generator

Create modern frosted-glass UI effects with adjustable blur, transparency, and border styling in pure CSS

Neumorphism Generator

Design elegant soft-shadow neumorphic UI elements with customizable depth, color, and shape controls

CSS Unit Converter

Convert between px, rem, em, vh, vw, and other CSS units based on your root font size settings

Meta Tag Generator

Generate SEO-optimized meta tags with title, description, keywords, and viewport configuration

Open Graph Preview

Preview exactly how your links will appear when shared on Facebook, Twitter, LinkedIn, and other platforms

Google SERP Preview

Preview your page's appearance in Google search results with title, description, and URL formatting

UTM Builder

Build tracked UTM campaign URLs for Google Analytics with source, medium, campaign, and content parameters

Schema Markup Generator

Generate JSON-LD structured data markup for rich search results, knowledge panels, and featured snippets

Pomodoro Timer

Boost your productivity with the Pomodoro technique timer featuring work sessions, breaks, and progress tracking

World Clock

View and compare current times across multiple cities and time zones around the world simultaneously

Countdown Timer

Create customizable countdown timers for events, deadlines, and launches with audio notifications

Date Difference

Calculate the exact number of days, weeks, months, and years between any two dates with precision

Age in Days Calculator

Calculate exactly how many days, hours, and minutes you've been alive from your date of birth

Typing Velocity

Measure your typing speed and accuracy in WPM with error heatmaps, custom text input, and a code snippet mode for developers

Reaction Forge

Test your reaction time with multi-round averages, false-start detection, session graphs, and world percentile estimates

Speed Math Arena

Solve math problems against the clock with 5 operation modes, configurable ranges, streak bonuses, and an ELO rating system

Memory Palace

Match card pairs with 4 deck themes, combo multipliers, time bonuses for fast matches, and a hint token system

Number Rush

Click numbers 1–50 in order as fast as possible with animated scrambles, speed feedback, and ghost timer showing your personal best pace

Brain Age Score

Take a 5-minute multi-game brain assessment covering speed, memory, math, and vision to get your Brain Score with a shareable results card

Color Vision Pro

Find the odd color in progressively harder grids with color blindness mode, speed scoring, and color theory explanations

Word Unscramble

Unscramble anagram puzzles before the timer runs out with a 500+ word bank, category filters, and letter shuffle animations

Sequence Master

Remember and repeat growing visual and audio patterns in this Simon-says game with visual-only and audio-only modes

Reflex Grid

Click randomly lit cells in a 5×5 grid before they disappear, tracking hit rate, response time, and session accuracy

Target Hunt

Click appearing targets as fast as possible with varying point values by size, accuracy tracking, and miss penalties

Number Memory

See a number for 2 seconds and type it back correctly, starting at 3 digits and growing to 12+ to test your digit span

Pattern Lock

Remember and redraw dot-connect patterns with growing complexity and decreasing mistake tolerance at higher levels

Pixel Memory

Memorize a briefly flashed pixel art image and recreate it on a blank grid with pixel-perfect and partial scoring

Visual Search

Find the target symbol hidden among distractors as grid density increases, tracking search time and miss rate

Shadow Match

Match silhouette shapes to one of four candidates as shapes rotate and scale with increasing difficulty

Math Memory

See a math equation for 1.5 seconds then type the answer from memory, combining working memory with arithmetic

Don't Tap Plus

Tap only safe blocks and avoid 3 types of hazards with power-ups, shields, and level progression across a game map

Avoid & Collect

Move your character to collect items while avoiding obstacles with momentum physics, particle effects, and boss waves

Fill Puzzle

Toggle cells to solve 50 hand-crafted logic puzzles with a solution hint system and increasing difficulty

Scientific Calculator

Full-featured scientific calculator with trigonometry, logarithms, exponents, and memory functions

Binary Calculator

Perform addition, subtraction, multiplication, and bitwise operations on binary numbers with decimal conversion

Prime Number Checker

Check if any number is prime, find its factors, and discover the nearest prime numbers above and below

GCD/LCM Calculator

Find the Greatest Common Divisor and Least Common Multiple of two or more numbers with detailed steps

Factorial Calculator

Calculate factorials, permutations, and combinations for any number with step-by-step computation