All tools

Generate Apache .htaccess redirect rules.

Add or subtract days, weeks, months or years from a date.

Stamp page numbers onto every page of a PDF.

Calculate exact age in years, months and days from a birth date.

Estimate monthly LLM API costs from token volume.

Convert between square meters, square feet, acres and more.

Calculate the mean, median, mode and range of a list of numbers.

Decode Base64 strings back to text.

Encode text or files to Base64.

Encode any file to a Base64 string or data URI.

Convert numbers between binary, octal, decimal and hexadecimal.

Build a CSS border-radius, with independent corners.

Calculate how many units you need to sell to break even.

Calculate the Compound Annual Growth Rate of an investment.

Convert text to UPPERCASE, lowercase, Title Case and more.

Count characters with and without spaces, live.

Convert colors between HEX, RGB, HSL and OKLCH.

Generate harmonious color palettes from a base color.

Pick a color from anywhere on your screen, or enter one manually.

Extract specific columns from CSV data.

Calculate sales commission from a sale amount and rate.

See what text changed between two PDF versions.

Calculate compound interest with configurable compounding frequency.

Reduce image file size while controlling quality.

Reduce PDF file size by rendering pages as compressed images.

See how much of a model's context window your text uses.

Check WCAG contrast ratio between two colors.

Crop an image to a custom or preset aspect ratio.

Trim margins or crop every page to a region.

Parse a CSP header and flag common weaknesses.

Build a Content-Security-Policy header from directives.

Generate a fluid clamp() value for responsive typography.

Format and beautify CSS stylesheets.

Clean up CSV formatting and convert between delimiters.

Convert CSV data to a JSON array of objects.

View a CSV file as a formatted table.

Remove duplicate rows from CSV data.

Convert between bytes, KB, MB, GB, TB and bits.

Convert a file into a data: URI for embedding in HTML or CSS.

Calculate the number of days, weeks or months between two dates.

Find what day of the week any date falls on.

Remove specific pages from a PDF.

Calculate the final price after a percentage discount.

Calculate your monthly loan EMI, total interest and repayment schedule.

Pull the embedded raster images out of a PDF.

Extract a page range into a new PDF.

Generate favicon PNGs and an .ico file from an image.

Calculate fixed deposit maturity value and interest earned.

Generate SHA-1, SHA-256 and SHA-512 hashes of a file.

Add, subtract, multiply and divide fractions.

Calculate your GPA from course grades and credits.

Calculate a weighted grade, or what score you need on remaining work.

Build a linear or radial CSS gradient with live preview.

Add or remove GST from an amount at any tax slab.

Generate MD5, SHA-1, SHA-256 and SHA-512 hashes.

Generate an HMAC signature for a message with a secret key.

Generate hreflang tags for multi-language pages.

Decode HTML entities back into plain characters.

Escape special characters into HTML entities.

Format and indent HTML markup for readability.

Parse and explain raw HTTP response headers.

Search and look up the meaning of any HTTP status code.

Calculate print size or DPI for a given image.

Estimate an image's file size from its dimensions.

Combine one or more images into a PDF.

Create and download a professional PDF invoice.

Format and beautify JavaScript code.

Combine JPG or PNG images into a single PDF.

Convert JPG images to PNG format.

Compare two JSON documents and highlight the differences.

Format and beautify JSON with adjustable indentation.

Strip whitespace to compress JSON to its smallest size.

Generate a JSON Schema from a sample JSON document.

Validate JSON data against a JSON Schema.

Escape text into a JSON string literal, or unescape it back.

Convert a JSON array of objects to CSV.

Generate TypeScript interfaces from a JSON sample.

Convert JSON to YAML format.

Validate JSON syntax and pinpoint errors instantly.

Format or minify a JSONL file.

Validate a JSONL (JSON Lines) file line by line.

Decode JWT headers and payloads to inspect claims.

Create and sign a JWT with an HMAC secret.

Find the most frequent words and phrases in your page content.

Convert between meters, feet, inches, miles and more.

Compare loan repayment options across amount, rate and tenure.

Generate placeholder Lorem Ipsum text by paragraph, sentence or word.

Project the future value of a one-time investment.

Normalize Markdown heading and list spacing.

Combine multiple PDF files into a single document.

Generate title, description and Open Graph meta tags.

Search file extensions and their MIME types.

Generate Nginx server block redirect rules.

Preview how a link will look when shared on social media.

Reorder, rotate and delete pages from a visual grid.

Generate strong, random passwords with custom rules.

Check a password's strength and estimated crack time.

Convert each PDF page into a JPG image.

Convert a PDF's text into clean Markdown.

Convert each PDF page into a lossless PNG image.

Extract selectable text content from a PDF.

Calculate percentages, percentage of a value and percentage change.

Convert PNG images to JPG format.

Calculate profit margin and markup from cost and selling price.

Split long text into token-bounded chunks.

Format a prompt as chat messages, XML tags or Markdown.

Generate a downloadable QR code from text or a URL.

Create and download a PDF price quotation.

Generate random numbers within a custom range.

Simplify ratios and scale them proportionally.

Create and download a PDF payment receipt.

Test regular expressions against sample text with live matches.

Remove duplicate lines from a list of text.

Resize an image to exact dimensions or a percentage.

Generate a valid robots.txt file for your site.

Test whether a URL is allowed or blocked by a robots.txt file.

Rotate one or all pages of a PDF.

Generate JSON-LD structured data for Article, Product, FAQ and more.

A full scientific calculator with trig, log and power functions.

Scrub API keys, tokens and secrets out of text before sharing it.

Preview how a page will look in Google search results.

Build a CSS box-shadow with live preview.

Draw or upload a signature and place it on a page.

Calculate simple interest on a principal amount.

Project the future value of monthly SIP investments.

Convert text into clean, URL-friendly slugs.

Convert between km/h, mph, m/s and knots.

Split a PDF into separate files by page range.

Format and indent SQL queries for readability.

Turn a list of values into a SQL IN (...) clause.

Generate SQL INSERT statements from CSV data.

Convert between Celsius, Fahrenheit and Kelvin.

Compare two blocks of text and highlight the differences.

Redact emails, phone numbers and other PII before sending text to an AI model.

Convert between seconds, minutes, hours, days and years.

Convert a time between two timezones.

Calculate a tip and split the bill between people.

Count exact tokens for GPT-4o and GPT-4 tokenizers.

Convert text to and from \u Unicode escape sequences.

Convert between Unix timestamps and human-readable dates.

Decode percent-encoded URLs back to plain text.

Percent-encode text for safe use in URLs.

Break a URL down into its protocol, host, path and query parameters.

Parse a User-Agent string into browser, OS and device details.

Generate random UUID v4 identifiers in bulk.

Convert between liters, gallons, cups and more.

Stamp text or an image watermark over every page.

Convert images to and from WebP format.

Convert between kilograms, pounds, ounces and more.

Count words, characters, sentences and reading time instantly.

Calculate annualized returns for irregular cash flows.

Format and indent XML documents for readability.

Generate a sitemap.xml file from a list of your site's URLs.

Convert YAML to JSON format.