Markdown → PDF
Create a clean, paginated PDF with readable typography.
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Search by name or format, filter by category, or jump back into something you used recently. 169 of 174 tools run entirely in your browser; the rest process your input on a server.
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174 tools
Markdown → PDF — open tool
Markdown → DOCX
Turn Markdown headings, lists and tables into a Word document.
Markdown → HTML
Export Markdown as a complete, styled HTML document.
DOCX → Markdown
Extract Word document content as portable Markdown.
DOCX → HTML
Convert a Word document into clean HTML.
DOCX → PDF
Lay out a Word document on readable PDF pages.
PDF → Text
Extract the readable text from every page, in reading order.
PDF → JPG
Render each page as a JPG image and bundle them in a ZIP.
PDF → PNG
Render each page as a PNG image and bundle them in a ZIP.
PDF → DOCX
Extract the text and rebuild it as an editable Word document.
HTML → PDF
Render an HTML document as a consistently spaced PDF.
Text → PDF
Lay out plain text on readable PDF pages.
PNG → JPG
Create a compact JPG with a white transparency background.
PNG → WebP
Compress a PNG into a modern WebP image.
JPG → PNG
Export a JPG image in lossless PNG format.
JPG → WebP
Compress a JPG into a modern WebP image.
WebP → PNG
Convert WebP into a widely supported lossless PNG.
WebP → JPG
Convert WebP to JPG with a white transparency background.
SVG → PNG
Rasterize a scalable SVG as a transparent PNG.
JSON → YAML
Convert JSON data into readable YAML.
YAML → JSON
Parse YAML and output formatted JSON.
CSV → JSON
Turn CSV rows into an array of JSON objects.
JSON → CSV
Convert an array of JSON objects into CSV.
JSON → XML
Build a well-formed XML document from JSON data.
XML → JSON
Parse XML elements and attributes into formatted JSON.
CSV → XML
Build a well-formed XML document from CSV rows.
CSV → Markdown
Format CSV data as a Markdown table.
Markdown → CSV
Extract the first Markdown table as CSV data.
Markdown → Text
Remove Markdown syntax while retaining readable text structure.
HTML → Text
Extract readable plain text from an HTML document.
HTML → Markdown
Convert an HTML document into clean, readable Markdown.
JSON to YAML Text
Convert JSON text into readable YAML directly in your browser.
YAML to JSON Text
Convert YAML text into formatted JSON locally.
XML Formatter
Format XML with consistent indentation and readable structure.
BMI Calculator
Calculate body mass index from height and weight.
Compound Interest Calculator
Estimate growth with principal, rate, time, and compounding frequency.
JSON Validator
Check JSON syntax and get a clear validation result instantly.
Regex Tester
Test regular expressions against sample text with match details.
Text Diff
Compare two pieces of text and quickly spot what changed.
Age Calculator
Calculate an exact age from a date of birth.
Simple Interest Calculator
Calculate simple interest and the total amount from principal, rate, and time.
Random Number Generator
Generate a random number between any minimum and maximum value.
Discount Calculator
Calculate sale prices, savings, and final totals from a discount percentage.
Tip Calculator
Split a bill and calculate a fair tip for any group size.
Slug Generator
Turn titles and phrases into clean, URL-friendly slugs.
Duplicate Line Remover
Remove repeated lines and clean up lists instantly in your browser.
Password Generator
Create strong random passwords locally with configurable length and character sets.
JSON Formatter
Format, validate and minify JSON without leaving the page.
Base64 Encoder/Decoder
Encode text as Base64 or decode Base64 back to text, with full Unicode support.
URL Encoder/Decoder
Percent-encode text for URLs, or decode an encoded string back to plain text.
UUID Generator
Generate random RFC 4122 version 4 UUIDs in bulk, with formatting options.
JWT Decoder
Inspect a JSON Web Token's header and payload with claim dates decoded. No verification.
Word Counter
Count words, characters, sentences and estimated reading time as you type.
Text Case Converter
Convert text between upper, lower, title, sentence, camel, snake and more.
Pomodoro Timer
Work in focused intervals with automatic short and long breaks.
Percentage Calculator
Work out percentages of values, shares of a total, and percentage change.
Date Difference Calculator
Measure the time between two dates in days, weeks, months and weekdays.
Unit Converter
Convert length, mass, temperature, volume, time and digital storage units instantly.
Reading Time Calculator
Estimate how long text takes to read or speak, with adjustable reading pace.
SQL Formatter
Format SQL queries for any major dialect with clean indentation and optional uppercase keywords.
HTML Formatter
Pretty-print HTML with consistent indentation, right in your browser.
CSS Formatter
Format CSS with readable indentation and one declaration per line.
JavaScript Formatter
Format JavaScript with consistent indentation, locally.
JSON to TypeScript
Generate TypeScript types from a JSON sample, with named types for nested objects.
Find and Replace
Search and replace text with optional regex, capture groups, and a live match count.
Lorem Ipsum Generator
Generate placeholder paragraphs, sentences or words for mockups and designs.
Hash Generator
Hash text or files with MD5, SHA-1, SHA-256, SHA-384 and SHA-512, entirely on-device.
QR Code Generator
Create QR codes for any text with size, color and error-correction control, downloadable as PNG or SVG.
Loan / EMI Calculator
Compute monthly payments, total interest and a year-by-year amortization schedule.
Color Converter
Convert between HEX, RGB and HSL, with a live swatch and WCAG contrast ratios.
Unix Timestamp Converter
Convert between Unix timestamps (seconds or milliseconds) and human-readable dates, both ways.
Stopwatch
A fast, precise stopwatch with laps and splits, running entirely in your browser.
Image Compressor
Compress PNG and JPG images with a quality slider, comparing before and after sizes.
Image Resizer
Resize images to exact dimensions or a target box, with aspect ratio preserved by default.
JS Minifier
Minify JavaScript with real terser — comments, whitespace and identifiers — with ES5/ES6 target and console stripping.
CSS Minifier
Strip comments, collapse whitespace, shorten hex colors and drop empty rules from CSS.
HTML Minifier
Remove comments, normalize tag whitespace and collapse text whitespace — safely, around scripts, styles and textareas.
XML Validator
Check XML well-formedness with the line and column of the first structural error.
YAML Validator
Validate YAML documents — including multi-document streams — with line and column for errors.
JSON Schema Validator
Validate a JSON document against a JSON Schema (draft-07 plus common formats) and list every violation.
HTML Entity Encoder/Decoder
Encode text as HTML entities (named or numeric) or decode an entity-laden string back to plain text.
Unicode Escapes
Convert text to \uXXXX escapes and back, with a code-point breakdown of every character used.
IP & CIDR Calculator
Analyze IPv4 and IPv6 addresses: network, broadcast, usable hosts and block size from a CIDR.
URL Parser
Break any URL into protocol, host, port, path, query parameters and hash — entirely on-device.
Query String Builder
Build clean URL query strings from key/value pairs, with sorting, encoding and empty-pair handling.
UTM Builder & Parser
Tag campaign URLs with utm_* parameters, or inspect which UTM tags an existing URL carries.
robots.txt Analyzer
Paste a robots.txt and check exactly what any user agent may fetch, with the matching rules explained.
Color Palette Generator
Generate harmonious five-color palettes — analogous, complementary, triadic and more — from a base color.
CSS Gradient Generator
Compose linear, radial and conic CSS gradients with editable color stops and a live preview.
Mock Data Generator
Generate deterministic fake rows — names, emails, companies, amounts — as CSV or JSON.
Barcode Generator
Render Code 128, Code 39, EAN-13, EAN-8 and ITF-14 barcodes as scalable SVG, downloadable as SVG or PNG.
Investment Calculator
Forecast growth from an initial deposit plus monthly contributions, compounded monthly, with a year-by-year table.
ROI Calculator
Return on investment: profit, percentage return and multiple from what you put in and got back.
CAGR Calculator
Compound annual growth rate from a start value, an end value and a number of years.
Ratio Calculator
Simplify any ratio to its lowest terms and see each side's share of the whole.
Statistics Calculator
Mean, median, mode, min/max, range, variance and standard deviation for a list of numbers.
Word Frequency Counter
Rank the most common words in any text with counts, shares and a top-N list.
Line Sorter & Cleaner
Sort lines alphabetically or naturally, remove duplicates and blank lines, and trim each line.
Markdown Previewer
Write Markdown and see the rendered result live, with links, code, tables and more.
Box-Shadow Generator
Compose CSS box-shadow values with live preview, sliders and a one-click copy.
Dice Roller
Roll any number of dice with configurable sides (d4–d100), animated results and history.
Coin Flip
Flip a coin with animated results, streak tracking and a heads/tails history.
Random Picker
Pick randomly from a list of options — add, remove and reorder with optional no-repeat mode.
PDF Merge
Combine multiple PDF files into a single document, with reorderable page order.
PDF Split
Extract specific pages or split every page into its own PDF, downloaded as a ZIP.
Image Cropper
Crop images with a draggable selection overlay — adjust position and size, then download.
Image Color Picker
Click any pixel in an image to pick its color — get HEX and RGB values with one-click copy.
Image Dimensions Checker
Upload any image to see its width, height, aspect ratio, megapixels and file size.
Image to Base64
Convert any image to a Base64 data URI or raw Base64 string for embedding in code.
JSON to Python
Generate Python dataclass definitions from a JSON sample with correct type annotations.
JSON to Go
Generate Go struct definitions from a JSON sample with correct types and JSON tags.
JSON to C#
Generate C# class definitions from a JSON sample with auto-properties.
JSON to Java
Generate Java class definitions from a JSON sample with getters, setters and typed fields.
JSON to SQL
Generate CREATE TABLE SQL statements from a JSON sample with appropriate column types.
Cron Generator & Explainer
Build cron expressions with sliders and presets, and get a plain-English explanation.
HTTP Status Code Lookup
Search HTTP status codes by number or name — get a clear explanation for every code.
MIME Type Lookup
Search MIME types by name, extension or category — get the correct Content-Type value.
User-Agent Parser
Parse any User-Agent string to extract browser, engine, OS, device type and bot detection.
Mortgage Calculator
Calculate monthly payments, total interest and a year-by-year amortization schedule.
Break-Even Calculator
Find how many units you need to sell to cover costs and hit a target profit.
Tax Calculator
Estimate US federal and state income tax with bracket breakdown and effective rate.
Salary Calculator
Convert annual salary to hourly, daily, weekly and monthly rates with optional tax deduction.
Business Days Calculator
Count business days between dates or add business days to a start date.
Countdown Timer & Stopwatch
Set a countdown with hours, minutes and seconds, or use the stopwatch with laps.
Meeting Time Converter
Convert a meeting time across 17+ timezones — pick your timezone and see the world clock.
JSON Diff
Compare two JSON objects and see every added, removed and changed field.
JWT Encoder
Encode header and payload into a JWT structure with Base64URL encoding.
HTML to JSX
Convert HTML to React-compatible JSX — classes, styles, self-closing tags.
CSS Units Converter
Convert between px, rem, em, pt, vh, vw and % for responsive CSS.
Regex Cheatsheet & Tester
Common regex patterns with a syntax reference — test them against your text.
Keyboard Key Code Tester
Press any key to see its key, code, keyCode, which, location and modifier state.
CSV Column Extractor
Select specific columns from CSV data by index — reorder, filter and export.
Aspect Ratio Calculator
Find the aspect ratio of any dimensions, or scale to a target ratio.
Fuel Cost Calculator
Calculate trip fuel cost from distance, efficiency and fuel price.
Retirement Calculator
Project retirement savings with contributions, compound growth and inflation.
Pregnancy Due Date Calculator
Estimate a due date, current trimester and conception date from LMP.
GPA Calculator
Calculate cumulative GPA from course grades and credit hours.
Number to Words
Convert any integer to its English word representation.
Data Size Converter
Convert between bytes, KB, MB, GB, TB, PB and EB.
Font Size Converter
Convert between px, pt, rem, em, % and viewport units for web typography.
Favicon Generator
Create a simple favicon from text — choose colors, shape and size, download PNG.
Screen Resolution Tester
See your current screen dimensions, pixel ratio and responsive breakpoints.
Text ↔ Binary Converter
Convert text to binary and binary back to text, one click away.
Date Format Converter
Convert any date to ISO, Unix timestamp, locale, RFC 2822 and more formats.
Password Strength Checker
Analyze password strength with entropy, criteria checks and a quality score.
WCAG Contrast Checker
Check color-pair contrast against WCAG AA and AAA accessibility standards.
JSON Minifier
Compress JSON by removing all whitespace — see bytes saved instantly.
Markdown to HTML
Convert Markdown to HTML with headings, lists, links, code blocks and more.
Color Blindness Simulator
See how images look with protanopia, deuteranopia, tritanopia or achromatopsia.
Markdown Table Generator
Build Markdown tables visually — add rows/columns, set alignment, copy the output.
Sitemap.xml Generator
Generate a valid sitemap.xml from a list of URLs with changefreq and priority.
robots.txt Generator
Build robots.txt with allow/disallow rules, crawl delay and sitemap directives.
OG & Social Meta Tag Generator
Generate Open Graph and Twitter Card meta tags with a live social preview.
JSON Schema Generator
Generate a JSON Schema (draft-07) from a sample JSON document automatically.
SRI Hash Generator
Generate Subresource Integrity hashes (SHA-256/384/512) for CDN resources.
HTML Meta Tag Generator
Generate a complete set of HTML meta tags for SEO, viewport, theme and more.
Email Signature Generator
Create professional HTML email signatures with photo, contact info and branding.
HTTP Headers Reference
Search and explore HTTP request/response headers with descriptions and examples.
CORS Headers Explainer
Configure and visualize CORS headers — see the preflight request and response.
SSH Key Generator
Generate Ed25519 and ECDSA key pairs in your browser using WebCrypto.
UUID v5 Generator
Generate deterministic UUID v5 from a namespace and name — same input, same UUID.
Password Hash Generator
Generate SHA-1/256/384/512 hashes of any text using the WebCrypto API.
X.509 Certificate Decoder
Decode PEM certificates to view their fingerprint, size and basic info.
SQL Injection Pattern Checker
Scan SQL queries or user input for common injection patterns and severity.
Color Palette from Image
Extract the dominant colors from any image as a ready-to-use palette.
API Mock Data Generator
Generate realistic mock JSON from a template — field names guide the data types.
Docker Compose Generator
Build docker-compose.yml visually — add services, ports, volumes and env vars.
package.json Generator
Build a package.json interactively — name, deps, scripts, all in one place.
Cron Expression Validator
Validate cron expressions — check each field against its range with clear errors.
AI Text Summarizer
Summarize any text using AI — bring your own OpenAI key, stored locally.
AI Text Rewriter
Rewrite text in different tones (professional, casual, concise) — bring your own key.
AI Regex Generator
Describe what to match in plain English — get a regex with explanation and tester.
AI SQL Generator
Describe a query in English, provide your schema — get the SQL instantly.
AI JSON Schema Generator
Describe your data structure in English — get a complete JSON Schema (draft-07).
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