Count words, characters, sentences, and paragraphs with reading time estimate.
Real-time character count with and without spaces, with social media limit indicators.
Generate placeholder text with configurable paragraphs, words, or sentences.
Convert text to UPPERCASE, lowercase, Title Case, camelCase, snake_case, and more.
Remove duplicate lines from text with optional sorting.
Convert any text to a URL-friendly slug with live preview.
Paste JSON to auto-format, prettify, and validate with error messages.
Encode text to Base64 or decode Base64 back to text.
Convert HEX color codes to RGB and vice versa with color preview.
Convert length, weight, temperature, speed, area, and volume units instantly.
Convert numbers between Binary, Octal, Decimal, and Hexadecimal.
Convert Unix timestamps to dates and vice versa with live current timestamp.
Generate strong passwords with configurable length and character types.
Generate v4 UUIDs with bulk generation option and copy button.
Generate QR codes from text or URLs and download as PNG.
Generate random numbers with configurable min, max, count, and uniqueness.
Generate harmonious 5-color palettes with HEX and RGB values.
Generate MD5, SHA-1, and SHA-256 hashes from any text.
Paste a list of names and instantly draw a random winner. Perfect for raffles, classrooms, and giveaways.
Calculate percentages with three modes: X% of Y, X is what % of Y, % change.
Calculate Body Mass Index with metric/imperial support and category gauge.
Calculate exact age in years, months, days with next birthday countdown.
Calculate final price and savings from original price and discount percentage.
Calculate tip amount, total bill, and split between multiple people.
Calculate monthly payments, total interest, and view amortization summary.
Test regex patterns with real-time match highlighting and group display.
Decode JWT tokens to view header and payload as formatted JSON.
Encode or decode URL components instantly.
Convert special characters to HTML entities and back.
Compare two texts side by side with highlighted differences.
Write Markdown on the left, see rendered HTML preview on the right.
Convert any image to a Base64-encoded data URI string instantly.
Convert CSV data to JSON format instantly. Supports quoted fields and multi-line values.
Strip extra whitespace from text, leaving single spaces between words.
Sort lines of text alphabetically, with reverse and case-insensitive options.
Reverse text by characters, words, or lines instantly.
Analyze text to find the most frequently used words with counts and percentages.
Remove line breaks and join lines with a custom separator.
Focus timer with work/break intervals, session tracking, and customizable durations.
Check WCAG accessibility compliance for text and background color combinations.
Parse and explain cron expressions in plain English with next scheduled run times.
Resize and compress images client-side with quality controls and format conversion.
Generate HTML meta tags, Open Graph tags, and Twitter Cards for better SEO.
Preview how your page will appear in Google search results on desktop and mobile.
Analyze keyword frequency and density in your content to optimize for SEO.
ToolCenterLab