Free online JSON tools. JSON formatter and beautifier with adjustable indentation. JSON validator that checks syntax and shows statistics. JSON to CSV converter with column filtering and sortable preview. JSON to XML converter with custom root and item tag names. JSON to YAML converter. JSON minifier with compression statistics showing original size, minified size, bytes saved, and compression percentage. JSON diff checker that compares two JSON objects and shows added, removed, and changed fields.
Free online encoding and decoding tools. Base64 encoder converts text to Base64. Base64 decoder converts Base64 back to text. Base64 image preview renders Base64 image strings. URL encoder encodes special characters for URLs. URL decoder decodes URL percent-encoded strings. HTML entity encoder escapes HTML special characters. HTML entity decoder unescapes HTML entities. JWT token decoder displays header, payload, claims, and checks token expiry. Hex encoder converts text to hexadecimal bytes. Hex decoder converts hex back to text. Unicode escape converts text to escape sequences. Unicode unescape converts escape sequences to readable text. MD5 hash generator. SHA-256 hash generator. Morse code encoder and decoder.
Free online generators for developers. UUID generator supporting v4 random, v1 time-based, and nil formats. Generate up to 100 UUIDs at once with uppercase and curly brace options. Secure password generator with length slider from 6 to 64 characters, character set options, ambiguous character exclusion, and password strength meter. Lorem Ipsum placeholder text generator for words, sentences, and paragraphs. QR code generator with custom foreground and background colors, four error correction levels, and PNG download.
Free fake data generator for developers and testers. Generate realistic mock test data including first names, last names, full names, email addresses, usernames, ages, phone numbers, mobile numbers, websites, countries, street addresses, cities, states, zip codes, full addresses, company names, job titles, departments, salaries, start dates, UUIDs, IP addresses, status values, boolean values, dates, scores, ratings, credit card numbers, balances, currencies, passwords, bios, and notes. Add custom fields with static values, comma-separated lists, random number ranges, true/false booleans, incrementing numbers, UUIDs, or date ranges. Export as JSON or CSV. Generate up to 1000 rows.
Free online hash and security tools. MD5 hash generator for text. SHA-256 hash generator for text with uppercase option. SHA-512 hash generator for text with uppercase option. File hash generator that computes MD5, SHA-256, and SHA-512 for any file directly in your browser without uploading the file to any server. All hashing uses the Web Crypto API.
Free online file converter that runs in your browser. Convert PDF to Word DOCX by extracting text from each page. Convert Word DOCX to PDF by rendering content with styled headings and paragraphs. Convert multiple images JPG PNG WEBP to a single PDF file. Extract PDF pages as individual PNG images. No files are uploaded to any server.
Free online time and date tools. Unix timestamp converter converts Unix timestamps in seconds or milliseconds to human-readable dates showing UTC, ISO 8601, local time, day of week, day of year, and week number. Also converts dates to Unix timestamps. Live mode shows the current timestamp in real time. Timezone converter converts a date and time between any of 35+ worldwide timezones with UTC offset display. Cron expression generator builds cron expressions with a visual field builder, shows a plain English description, previews the next 5 execution times, and offers 18 common presets.
Free online text utilities. Text diff checker compares two texts line by line and highlights added lines, removed lines, and changed lines with color coding. Remove duplicate lines tool deduplicates text with options for case sensitivity, whitespace trimming, empty line removal, and sorted output. Case converter converts text to 12 formats simultaneously including UPPERCASE, lowercase, Title Case, Sentence case, camelCase, PascalCase, snake_case, kebab-case, CONSTANT_CASE, dot.case, alternating case, and inverted case. Regex tester tests regular expressions against text with live match highlighting, flag controls, match detail table, and 10 built-in presets for email, URL, phone, IPv4, UUID, date, hex color, ZIP code, credit card, and HTML tags.