Tools that run
in your browser.

Combine multiple PDF files into one downloadable PDF. Drag, drop, reorder. Runs in your browser.

Extract specific pages or page ranges from any PDF. Download the result instantly.

Convert PDF pages to JPEG or PNG images. Download individually or all at once.

Rotate or flip PDF pages 90°, 180°, or 270°. Adjust individual pages or all at once.

Convert JPG, PNG, WebP, or GIF images to a PDF. Add multiple images, reorder, download instantly.

Reduce PDF file size in your browser. Lossless optimisation or image re-rendering.

Stamp page numbers onto every page of a PDF. Choose position, start number, and size.

Add a diagonal text watermark to every page of a PDF. Control opacity, size, and colour.

Extract plain text from any PDF using pdfjs-dist. Copy or download. Runs in your browser.

Remove specific pages from a PDF and download the result. Thumbnail preview included.

Drag PDF pages into any order and download the rearranged PDF. Runs in your browser.

View, edit, or strip the title, author, subject, dates, and creator embedded in a PDF. Runs in your browser.

Trim PDF pages with a draggable rectangle. Lock to A4, Letter, or square. Applied via pdf-lib in your browser.

Reduce JPEG, PNG and WebP size with a quality slider. Compression runs in your browser.

Scale to any size or use platform presets. Instagram, LinkedIn, WhatsApp and more.

Convert between JPEG, PNG, and WebP formats. Lossless or quality-controlled.

Rotate images 90°, 180°, 270° or flip horizontally. Download as PNG.

Crop images to any size, square, or circle shape. Canvas API. Runs in your browser.

Convert any image to a Base64 data URI. Copy directly into HTML, CSS, or JSON.

Pick any color from an uploaded image. Hex, RGB, and HSL output. Runs in your browser.

Generate favicon PNGs in 16, 32, 48, 64, 192, and 512 pixel sizes from any image. Runs in your browser.

Decode JWT header and payload instantly. All inspection runs in your browser.

Convert numbers between binary, octal, decimal, and hex. All bases shown at once.

Test regular expressions with live match highlighting, replace, and split modes.

Parse any cron schedule into plain English and see the next run times. Fully in-browser.

Encode special characters to HTML entities and decode them back. Instant, in your browser.

Live Markdown-to-HTML preview with syntax support. All rendering runs in your browser.

Beautify and format SQL queries. Supports MySQL, PostgreSQL, T-SQL and standard SQL.

Calculate network address, broadcast, host range and usable hosts from any CIDR block.

Click permission bits to get the numeric (755) and symbolic (rwxr-xr-x) notation instantly.

Generate random, strong, or memorable passwords using your browser's crypto API.

Format, validate, and convert YAML. Compatible with Kubernetes, CI configs, and OpenAPI files.

Pretty-print, minify, and validate XML. Uses the browser's native DOMParser.

Convert any text into a URL-safe slug. Handles diacritics, special characters, and custom separators.

Pretty-print, minify, validate, and sort JSON keys. Instant output.

Convert CSV to JSON and JSON back to CSV. Handles quoted fields and downloads.

Encode text or files to Base64, decode Base64, or convert images to data URIs.

Percent-encode and decode URLs, or parse query strings into key-value pairs.

Generate SHA-256, SHA-512, SHA-1, and MD5 hashes. Verify file checksums locally.

Generate random UUID v4 values in bulk. Uses the browser's crypto API.

Calculate compound interest with daily, monthly, quarterly, or annual compounding. Includes a year-by-year breakdown table.

Calculate monthly mortgage payments, total interest, and amortization schedule. Standard formula, runs in your browser.

Calculate monthly payments and total interest for auto, personal, or student loans. Runs in your browser.

Convert between hourly, weekly, monthly, and annual salary. Estimate take-home pay.

Calculate return on investment and annualized ROI. For investments, marketing spend, or any cost-vs-gain analysis.

Estimate lean body mass, fat mass, and implied body fat percentage using the Boer formula.

Calculate your estimated due date from your last period or conception date. Includes gestational age and trimester.

Calculate your Body Mass Index in metric or imperial units. Instant WHO category result.

Calculate your Total Daily Energy Expenditure and calorie targets for weight loss or gain.

Estimate body fat percentage using the US Navy circumference method. No calipers needed.

Estimate your 1RM for any lift using Epley and Brzycki formulas. Includes a full percentage table.

Find your ideal weight range using Hamwi, Devine, and BMI-range formulas for your height.

Calculate your maximum heart rate and 5 training zones using the Tanaka formula.

Calculate tip amount, total per person, and split a bill between any number of guests.

Convert length, weight, temperature, speed and volume between metric and imperial. Instant results.

Convert between bytes, KB, MB, GB and TB in both decimal (SI) and binary (IEC) units.

Calculate percentages three ways: X% of Y, X is what % of Y, and percentage change.

Calculate your exact age in years, months, and days from your date of birth. Includes birthday countdown and total days lived.

Calculate sale price and savings from a percent-off discount. Handles single or stacked discounts.

Find and replace text with plain search or regular expressions. Supports case-sensitive and whole-word matching.

Sort lines alphabetically, by length, or shuffle randomly. Remove duplicates and empty lines in one click.

Inline or side-by-side comparison. Handles plain text and structured diffs.

Convert text between camelCase, snake_case, kebab-case, PascalCase and more.

Count words, characters, sentences, and paragraphs. All processing runs in your browser.

Generate placeholder paragraphs, sentences, or words. Plain text or HTML output.

Flesch reading ease, grade level, and estimated reading time. Paste any text and see the score.

Convert between Unix timestamps and human-readable dates. Seconds or milliseconds.

Days between dates, add or subtract days, calculate age, or count down to a future date.

Convert any time between time zones using the IANA database. Includes common shortcuts for major cities.

Generate QR codes for URLs, plain text, or Wi-Fi credentials. Download as PNG or copy as SVG. Runs in your browser.

Decode QR codes from uploaded images or your webcam. All decoding runs in your browser.

Generate Code 128, EAN-13, and UPC-A barcodes. Download as SVG or PNG. Runs in your browser.

Generate complementary, analogous, triadic, and monochromatic color palettes. Copy hex, RGB, or CSS variables.

Generate 21 tints and shades from any base color. Click any swatch to copy the hex code.

Build linear, radial, or conic CSS gradients visually. Live preview and one-click copy.

Convert HEX, RGB, and HSL color values instantly. Live preview swatch included.

Check WCAG AA/AAA contrast ratios between two colours. Live pass/fail results.

Add, subtract, multiply, divide, and simplify fractions. Shows step-by-step working.

Convert between Roman numerals and Arabic numbers. Supports 1 to 3,999.