Free Online Tools

Utilities that run right in your browser — free, no sign-up, your data is never stored.

Instant No login Private & safe

Text

Word Counter Count words, characters, lines, sentences, paragraphs and estimate reading time for your text. Case Converter Convert text to UPPERCASE, lowercase, Title Case, camelCase, snake_case and more. Text to Slug Turn titles into SEO-friendly URL slugs: strip accents, lowercase, replace spaces. Lorem Ipsum Generator Generate Lorem Ipsum placeholder text by paragraphs, sentences, words or bytes for design and mockups. Text Diff Checker Compare two texts, highlighting added and removed parts and computing similarity. Article Rewriter Rewrite English articles by swapping in basic synonyms, running in your browser. Text to Hashtags Extract hashtags from text by word frequency, with adjustable count and minimum length. Hashtag Generator Generate hashtag sets by topic and category like travel, food, fitness for social media. Backwards Text Generator Reverse the whole text or reverse each word while keeping word order. Remove Line Breaks Remove line breaks, merge text into one paragraph or just strip extra blank lines. Remove Vietnamese Accents Convert accented Vietnamese text to unaccented text instantly in your browser. Random Sentence Generator Generate random English sentences for testing, placeholders and content ideas. Duplicate Line Remover Remove duplicate lines with options to ignore case, trim spaces and sort. Text Replacer Bulk find and replace in text, with case sensitivity and regex support. Text Cleaner Clean text: collapse spaces, remove blank lines, special characters and normalize formatting. Comma Separator Convert multi-line lists to comma-separated strings and back, with optional quotes. Small Text Generator Create small Unicode text: small caps, superscript and subscript for bios and social media. Word Combiner Combine two word lists into every combination, great for SEO keywords and domain names. Text to Speech Read text aloud right in your browser with adjustable voice, rate and pitch. Email Extractor Extract all email addresses from any text, one per line, with duplicates removed. URL Extractor Extract every URL link from text or HTML, one per line, duplicates removed. List Randomizer Randomly shuffle the order of lines, great for draws and random picking. List Alphabetizer Sort lines alphabetically A to Z or Z to A, with Vietnamese support. Reverse List Reverse the order of lines so the last becomes first and vice versa. Reverse Words Reverse the order of words in a sentence while keeping each word intact. Emoji Remover Strip all emoji and emoticons from text, keeping only the plain characters. Upside Down Text Create upside-down Unicode text for Facebook, Instagram and TikTok bios. Cursive Text Generator Generate fancy cursive script text with Unicode for Instagram and Facebook bios. Old English Text Create Old English / Gothic Fraktur Unicode text for logos, tattoos and bios. Palindrome Checker Check whether a word or phrase is a palindrome, with optional case sensitivity. Text Size Calculator Calculate text size in bytes (UTF-8), KB, plus character, word, line and sentence counts. HTML Tags Remover Strip all HTML tags to plain text, with an option to keep line breaks. Markdown to HTML Convert Markdown to HTML with live preview, supporting headings, lists, links and tables. BBCode to HTML Convert forum BBCode to HTML: bold, italic, url, img, quote, code, list and color. Text Converter Convert between Text, Hex, Binary and Decimal (ASCII) in real time. Punycode Converter Convert Unicode (IDN) domains to Punycode (xn--) and back per RFC 3492.

Developer

JSON Formatter Beautify, minify and validate JSON syntax. Base64 Encode/Decode Encode and decode Base64 strings (full Unicode support). URL Encode/Decode Encode and decode URLs (percent-encoding). JSON Escape / Unescape Add or remove escape characters from JSON strings for safe embedding. JSON ↔ XML Converter Two-way conversion between JSON and XML with readable formatting. JSON Schema Generator Generate a JSON Schema (draft-07) automatically from sample JSON data. Base64 to Image Convert a Base64 string or Data URI to an image, preview and download. URL Parser Break down and inspect URL components: host, path, query and hash. JWT Decoder Decode and inspect a JSON Web Token: header, payload and signature. HMAC Generator Generate HMAC (SHA-256/1/512) from a message and secret key. Hash Generator Generate MD5, SHA-1/224/256/384/512, SHA-3, RIPEMD-160 and CRC32 from text. UUID Generator Generate unique identifiers UUID v1 and v4, in bulk up to 100 at once. HTML Encoder / Decoder Convert special characters to HTML entities and back for safe display. Unix Timestamp Converter Convert Unix timestamp to date-time and back, in UTC and local time. Number Base Converter Convert numbers between binary, octal, decimal and hexadecimal. CSS Beautifier Format and indent CSS code so it is clean, readable and easy to maintain. CSS Minifier Minify CSS by stripping whitespace and comments to reduce file size. HTML Beautifier Format and indent HTML code so it is clean, readable and easy to edit. HTML Minifier Minify HTML by removing extra whitespace and comments to reduce size. JS Beautifier Format, indent and line-break JavaScript code for readability. JS Minifier Minify JavaScript with Terser to reduce file size. JS Obfuscator Obfuscate JavaScript (Base64/CharCode) to make it hard to read or copy. XML Beautifier Format and indent XML code for readability and structure checking. XML Minifier Minify XML by removing whitespace and comments between tags. Random JSON Generator Generate sample JSON data (users, products) to test APIs and mock data. Random XML Generator Generate random sample XML data to test and mock applications. SQL Formatter Format and prettify SQL queries across dialects with proper indentation. Bulk URL Opener Open many URLs at once in new browser tabs. URL Rewriting Tool Convert query-string URLs into clean SEO-friendly URLs. .htaccess Redirect Generator Generate 301/302 redirect rules for Apache .htaccess files.

Image & Color

Color Converter Convert colors between HEX, RGB and HSL formats. Color Picker Pick colors visually and copy HEX, RGB, HSL codes. Gradient Generator Build linear and radial CSS gradients visually. Box Shadow Generator Create CSS box-shadow effects with sliders and live preview. Image Compressor Compress images in your browser without uploading. Image Resizer Resize images quickly while keeping aspect ratio. Image Converter Convert images between PNG, JPG, WEBP, BMP, ICO. Image to Base64 Convert images into Base64 Data URI strings to embed. Favicon Generator Generate multi-size favicons from an image with embed code. SVG to PNG Convert SVG code to PNG with selectable resolution. SVG to JPG Convert SVG code to white-background JPG with quality control. EXIF Reader Read image EXIF metadata: camera, ISO, aperture, GPS. HEIC Converter Convert iPhone HEIC/HEIF photos to JPG or PNG. Image to Text (OCR) Extract text from images via OCR, Vietnamese and English. QR Code Reader Read and decode QR code content from an uploaded image. Barcode Reader Read 1D/2D barcodes like EAN, UPC, Code 128, QR from images. Meme Generator Create memes with top/bottom Impact captions and download. Signature Pad Draw a handwritten signature and download a transparent PNG.

Converters

Calculators

AdSense Revenue Calculator Estimate daily, monthly and yearly Google AdSense revenue from page views, CTR and CPC. Age Calculator Calculate exact age in years, months, days, total days lived and days to next birthday. Average Calculator Calculate the mean, median, sum, minimum and maximum of a set of numbers. Percentage Calculator Find X% of Y, what percent X is of Y, and the percent increase/decrease between two numbers. Discount Calculator Calculate the final price and the amount saved when applying a percentage discount. Probability Calculator Compute single-event probability and the combined probability of two independent events. Sales Tax Calculator Calculate tax amount and after-tax total, or extract tax from a tax-inclusive price. Reading Time Calculator Estimate reading and speaking time of a text based on word count and custom reading speed. Uptime / Downtime Calculator Calculate allowed downtime for an SLA uptime level per day, week, month and year. Random Number Generator Generate random numbers within a chosen range, multiple at once, with a no-duplicate option. Calorie Calculator Plan daily calories and macros to reach your weight loss or weight gain goal. TDEE Calculator Calculate BMR and TDEE from weight, height, age, gender and activity level.

Generators & Marketing

Meta Tags Generator Generate SEO-friendly meta tags (title, description, keywords, author) for your website. Open Graph Generator Create Open Graph tags to optimize how your link looks when shared on Facebook and Zalo. Twitter Card Generator Generate Twitter Card tags so your posts look great when shared on Twitter (X). Robots.txt Generator Create a robots.txt file to control how search engine bots crawl your website. FAQ Schema Generator Generate schema.org FAQ JSON-LD markup for Google rich snippets. UTM Builder Build UTM tracking links for marketing campaigns, compatible with Google Analytics. QR Code Generator Generate QR codes for URLs, text, email, phone and WiFi, download as PNG. Barcode Generator Generate CODE128, EAN-13, UPC and CODE39 barcodes for products, download as SVG. Credit Card Generator Generate Luhn-valid fake credit card numbers (Visa, MasterCard, Amex) for software testing. Fake Name Generator Generate random fake identities (name, gender, email, phone, date of birth) for testing. Fake Address Generator Generate random fake Vietnamese and US addresses for testing forms and sample data. WhatsApp Link Generator Create WhatsApp wa.me chat links with phone number and a prefilled message. Mailto Link Generator Generate mailto links with To, CC, BCC, subject and a prefilled body. PayPal.me Link Generator Create PayPal.me payment links with username, amount and currency. YouTube Timestamp Link Create a YouTube link that starts at a specific timestamp (h:m:s). YouTube Thumbnail Downloader Download HD thumbnail images from any YouTube video. Twitter Character Counter Count characters, words and remaining characters for Twitter (X) posts up to the 280 limit.

Security

Password Generator Generate strong random passwords with custom length and character sets, fully in your browser. Password Strength Checker Score your password security out of 100 and get instant suggestions to make it stronger. Bcrypt Generator & Verifier Generate bcrypt hashes with custom cost and verify a password against a hash, right in your browser. Text Encryption Tool Encrypt and decrypt text with a secret key (XOR + Base64) in your browser, no data sent anywhere.

Video Downloader