All tools
Browse all 77 tools across 11 categories.
Format, encode, convert and debug — faster.
JSON Formatter & Validator
Beautify, minify and validate JSON with clear error reporting.
Base64 Encode / Decode
Convert text and files to and from Base64 in one click.
URL Encode / Decode
Percent-encode and decode URLs and query parameters.
UUID Generator
Generate cryptographically random UUID v4 identifiers.
Hash Generator
Compute SHA-1, SHA-256, SHA-384 and SHA-512 hashes.
JWT Decoder
Decode and inspect JSON Web Token headers and payloads.
HTML Entity Encode/Decode
Encode and decode HTML entities, including numeric and named references.
Unix Timestamp Converter
Convert Unix timestamps to human dates and back, in local and UTC time.
Number Base Converter
Convert numbers between binary, octal, decimal and hexadecimal.
Regex Tester
Test regular expressions live with match highlighting and capture groups.
JSON to CSV Converter
Convert between JSON arrays and CSV with proper quoting and parsing.
Color Contrast Checker
Check WCAG color contrast ratios with AA and AAA pass/fail results.
Rank higher with clean, technical SEO tools.
Meta Tag Generator
Generate title, description, Open Graph and Twitter tags.
Robots.txt Generator
Build a valid robots.txt with allow/disallow rules.
Keyword Density Checker
Analyse word frequency and keyword density in any text.
UTM Campaign Builder
Build properly encoded UTM tracking URLs for your marketing campaigns.
SERP Snippet Preview
Preview how your page appears in Google search results before you publish.
XML Sitemap Generator
Turn a list of URLs into a valid XML sitemap for search engines.
Compress, resize and convert images instantly.
Image Compressor
Smartly compress JPG, PNG and WebP without uploading.
Image Resizer
Resize images by pixels or percentage, privately.
Image to Base64
Convert any image to a Base64 data URL locally with copy-ready HTML and CSS.
Image Color Picker
Upload a photo and pick any colour from it — get HEX, RGB & a palette.
Image Cropper
Crop an image to any region by dragging a selection — then download.
Image Format Converter
Convert images between PNG, JPG and WebP with adjustable quality.
Image Rotator & Flipper
Rotate by 90° steps and flip images horizontally or vertically.
Image Filters & Effects
Apply grayscale, sepia, brightness, contrast, blur and more.
Favicon Generator
Turn any image into favicon PNGs at every size you need.
Work with PDFs without the bloat.
Merge PDF
Combine multiple PDF files into one, in any order — privately.
Split PDF
Extract a page range from a PDF, or split it into single pages.
Images to PDF
Turn JPG and PNG images into a single PDF document.
Rotate PDF
Rotate all pages of a PDF by 90, 180 or 270 degrees.
Delete PDF Pages
Remove unwanted pages from a PDF and keep the rest.
Answers you can trust, instantly.
Percentage Calculator
Work out percentages, increases, decreases and changes.
BMI Calculator
Calculate Body Mass Index in metric or imperial units.
Age Calculator
Find your exact age in years, months, days and more.
Date Difference Calculator
Count the time between two dates precisely.
Tip Calculator
Work out tips and split the bill in seconds.
Discount Calculator
See sale prices, stacked discounts and savings.
Unit Converter
Convert length, weight, temperature and data units.
Tools that keep work moving.
QR Code Generator
Create QR codes for URLs, text, Wi-Fi and more.
Password Generator
Generate strong, cryptographically secure passwords with a live strength meter.
Random Number Generator
Generate cryptographically secure random numbers with unique and sorted options.
Break-Even Calculator
Find how many units you must sell to cover costs and the revenue at that point.
Markup Calculator
Apply a markup to a cost to get the selling price, profit and margin.
ROI Calculator
Calculate return on investment, net profit and optional annualized ROI.
Smart helpers powered by on-device intelligence.
Text Summarizer
Condense long text into a short extractive summary by ranking sentences by keyword frequency.
Readability Checker
Measure how easy your text is to read with Flesch Reading Ease and Flesch-Kincaid grade level.
Sentiment Analyzer
Detect positive, neutral, or negative tone using a built-in sentiment word lexicon.
Keyword Extractor
Pull the top ranked keywords and key phrases from any content by frequency.
Text to Speech
Read any text aloud using your browser's built-in speech voices, with rate and pitch controls.
Hashtag Generator
Turn any caption or topic into a clean, deduped set of hashtags.
Polish every word.
Word & Character Counter
Live word, character, sentence and reading-time counts.
Case Converter
Convert text between UPPER, lower, Title, camelCase and more.
Lorem Ipsum Generator
Generate placeholder text by words, sentences or paragraphs.
URL Slug Generator
Turn titles into clean, SEO-friendly URL slugs.
Text Diff Checker
Compare two texts line by line and highlight added, removed, and unchanged lines.
Remove Duplicate Lines
Strip duplicate lines from text, keeping the first occurrence or only truly unique lines.
Line Sorter
Sort lines alphabetically, by length, in reverse, or shuffle them randomly.
Text Reverser
Reverse text by characters, words, or lines, or flip it upside-down with Unicode.
Whitespace Remover
Trim lines, collapse extra spaces, remove blank lines, or strip all spaces from text.
Text Repeater
Repeat any text a set number of times with a chosen separator and optional numbering.
Make content that stands out.
Color Converter
Convert colours between HEX, RGB, HSL and more.
CSS Gradient Generator
Build linear and radial CSS gradients visually with live preview and copyable code.
CSS Box Shadow Generator
Craft CSS box shadows with sliders for offset, blur, spread, color and inset.
Border Radius Generator
Round element corners visually with per-corner sliders and a link-all toggle.
Plan, budget and decide with confidence.
Loan / EMI Calculator
Estimate monthly repayments, total interest and cost.
Compound Interest Calculator
Project savings growth with compounding and deposits.
Simple Interest Calculator
Calculate simple interest and the total amount from principal, rate and time.
Sales Tax Calculator
Add sales tax to an amount, or extract the net and tax from a total.
Profit Margin Calculator
Find profit, profit margin and markup from your cost and selling price.
Savings Goal Calculator
See how many months it takes to reach a savings goal at your monthly rate.
Learn faster with the right tools.
Number to Words
Convert numbers into written English words, with support for decimals and negatives.
Roman Numeral Converter
Convert numbers to Roman numerals and back, with full validation.
Average (Mean/Median/Mode)
Compute mean, median, mode, range and more from a list of numbers.
Prime Number Checker
Check whether a number is prime and see its factors and prime factorization.
Multiplication Table
Generate a clean times table for any number and range.
GPA Calculator
Calculate your weighted GPA from course credits and letter grades.