All tools
55 tools live and 0 in development. Every one is free, runs in your browser and has a guide beneath it.
Developer tools
Format, validate, encode and inspect data
JSON Editor Two panels with text, tree and table modes, compare, transform and repair JSON Formatter Pretty print messy JSON with your preferred indentation JSON Validator Find the exact line and character of any JSON syntax error JSON Minifier Strip whitespace to shrink JSON for production Code Formatter Beautify JavaScript, TypeScript, CSS, HTML and SQL Text Diff Checker Compare two texts and highlight every difference XML Formatter Pretty print and validate XML, SVG and XHTML Base64 Encode / Decode Encode text or files to Base64 and back URL Encode / Decode Percent-encode or decode URLs and query strings JWT Decoder Inspect JWT header, payload and expiry without a server Regex Tester Live-match regular expressions with group highlighting UUID Generator Generate one or thousands of v4 UUIDs Hash Generator Hash text or files with MD5, SHA-1, SHA-256 and SHA-512 HTML Entity Encoder Escape and unescape HTML entities safely Cron Expression Parser Translate cron schedules into plain English and next run times SQL Formatter Format SQL for MySQL, PostgreSQL, SQLite and SQL Server GraphQL Formatter Format and validate GraphQL queries and schemas Mock JSON Generator Generate realistic fake JSON from a simple schema API Request Tester Send GET, POST and other requests and inspect the response Password Generator Strong random passwords and passphrases, generated locally
Text tools
Count, clean, convert and transform text
Word Counter Words, characters, sentences, reading time and keyword density Case Converter Switch between upper, lower, title, sentence, camel and snake case Lorem Ipsum Generator Paragraphs, sentences or words of placeholder text Markdown Preview Write Markdown on the left, see rendered HTML on the right Slug Generator Turn any title into a clean, SEO-friendly URL slug Remove Duplicate Lines Deduplicate, trim and clean lists in seconds Sort Lines Sort lines A to Z, Z to A, by number or by length Find and Replace Bulk find and replace with plain text or regex
Image tools
Compress, convert, resize and edit images
Image Editor Crop, resize, rotate and export images in your browser Image Compressor Shrink images up to 80% with a live quality preview Image Converter Convert between PNG, JPG, WebP and AVIF in bulk Image Resizer Resize by pixels, percentage or preset social sizes Favicon Generator Every favicon size and the HTML to go with it from one image Color Picker from Image Click any pixel to get its HEX, RGB and HSL values
PDF tools
Merge, split, compress and convert PDFs
PDF Converter Turn images into a PDF or merge PDFs, all offline PDF Split Extract pages or split a PDF into separate files PDF Compress Reduce PDF file size by recompressing images PDF to Image Render PDF pages to PNG or JPG at any resolution PDF Page Reorder Drag pages to reorder, rotate or delete them
Converters
Units, colours, number bases and data formats
JSON to CSV Flatten JSON arrays into a clean CSV spreadsheet JSON to YAML Convert JSON to clean, readable YAML YAML to JSON Turn YAML into JSON and catch indentation mistakes Timestamp Converter Convert Unix timestamps to dates and back, any timezone Text to Binary Convert text to binary, hex or octal and back Unit Converter Length, weight, temperature, area, volume and speed Color Converter Convert colours between HEX, RGB, HSL and OKLCH Number Base Converter Convert between binary, octal, decimal and hexadecimal QR Code Generator QR codes for URLs, Wi-Fi, contacts and text as SVG or PNG
Calculators
Percentages, dates, loans and everyday maths
Percentage Calculator What is X% of Y, percent change and more, with the working Loan & EMI Calculator Monthly payment, total interest and a full schedule Age Calculator Exact age today or on any date, down to the day Date Difference Calculator Days, weeks, months and years between any two dates BMI Calculator Body mass index with category and healthy weight range Tip Calculator Tip amount, total and per-person share in one tap Compound Interest Calculator Growth over time with contributions and a yearly chart