Free Developer & Text Tools

ASCII Table Searchable full ASCII table (0-127) with decimal, hex, octal, binary, and a character/code converter. Barcode Generator Create a real, scannable Code 128 barcode from text or numbers with instant PNG download. Base64 Encode Decode Encode text to Base64 or decode Base64 to text instantly, with UTF-8 and URL-safe support. Base64 Encoder & Decoder Encode text to Base64 or decode it back instantly, with full Unicode support. Binary to Text Convert space-separated 8-bit binary code into readable UTF-8 text instantly. Border Radius Generator Drag four corner sliders, preview instantly, and copy ready-to-use CSS border-radius code. Box Shadow Generator Design a CSS box-shadow visually with offset, blur, spread, color and inset controls, plus copy-ready CSS. CIDR Range Merger Collapse a messy list of IPv4 CIDR blocks into the smallest exact set that covers the same addresses. CRC32 Hash Generator Compute the standard IEEE CRC32 checksum of any text in hex and decimal, instantly in your browser. CSS Animation Generator Build a CSS keyframe animation with timing controls and a live preview. CSS Clamp Generator Generate a fluid clamp() value for responsive font-size and spacing, with live preview at real viewport widths. CSS Flexbox Generator Set direction, justify, align, wrap and gap visually, preview live, and copy flexbox CSS. CSS Gradient Generator Build linear, radial or conic CSS gradients visually with a live preview and copy-ready CSS. CSS Grid Generator Set columns, rows and gap (or pick a preset), preview live, and copy display:grid CSS. CSS Minifier Minify CSS to shrink file size and speed up your site, safely in your browser. CSS Specificity Calculator Paste a CSS selector to get its specificity score, or compare two selectors to see which one wins. CSS Triangle Generator Generate border-trick triangle and arrow CSS in any direction with a preview. CSV to JSON Converter Convert CSV to a clean JSON array with real quote-aware parsing and delimiter choice. Character Counter Count characters, sentences, bytes and check limits for Twitter, SMS and meta tags. Checksum Comparator Compare two checksums or compute one from text and get a clear verdict. Color Contrast Checker Check any two colors against WCAG AA/AAA contrast standards with a live text preview. Color Palette Generator Generate complementary, triadic and analogous harmonies plus tints and shades. Color Picker Pick any color and copy its HEX, RGB and HSL codes instantly, in one click. Cron Expression Generator Build a cron expression from presets or paste one in for a plain-English explanation. Cron Next Run Calculator Parse a five-field cron expression and see exactly when it fires next, ten times over. DNS Record Generator Build a correct, complete DNS record set for a domain including MX, SPF, DMARC and CAA. Env File Parser Convert a .env file into clean JSON with quotes, comments and duplicate keys handled. Free Text Case Converter Change text to UPPERCASE, lowercase, Title Case, camelCase, snake_case and more. HAR File Analyzer Read a HAR capture in your browser and see request counts, transfer size and blocking time. HTML Encoder Decoder Convert special characters to HTML entities or decode entities back to text, for safe markup. HTML Minifier Strip comments and collapse whitespace in your HTML instantly, right in your browser. HTML to Markdown Converter Paste HTML and get clean Markdown instantly — headings, lists, links, code blocks, and more. HTTP Status Code Lookup Search every HTTP status code with its meaning and SEO guidance on redirects, 404 vs 410, and maintenance mode. Hash Generator Generate MD5, SHA-1, SHA-256, and SHA-512 hashes from any text instantly in your browser. Hex to RGB Converter Convert any HEX color code to RGB, RGBA and HSL instantly with a live swatch and one-click copy. Hreflang Tag Generator Build an hreflang set with validated language and country codes, x-default and return links. Htpasswd Generator Create an Apache htpasswd line with salted APR1 MD5 hashing in your browser. IP Subnet Calculator Get the network, broadcast, mask, wildcard and usable host range for any IPv4 prefix. Internet Speed Test Test your connection in seconds download, upload, ping & jitter on a live gauge. JS Minifier Strip comments and excess whitespace from JavaScript safely, right in your browser. JSON Diff Viewer Compare two JSON documents by key path so reordered keys stop showing as false changes. JSON Formatter & Validator Format, validate, beautify and minify JSON instantly in your browser. JSON Validator Validate JSON instantly and get the exact error, line, and column when it's invalid. JSON to CSV Converter Convert a JSON array of objects into clean, RFC 4180 CSV — nested objects flatten automatically. JSON to XML Converter Convert JSON into clean, pretty-printed XML with arrays mapped to repeated elements. JSON to YAML Convert JSON into clean, readable YAML instantly in your browser. JWT Decoder Decode a JWT's header and payload into readable JSON and check its expiry status instantly. Lorem Ipsum Generator Generate lipsum placeholder text by paragraph, sentence or word — copy instantly. MIME Type Lookup Search 150+ file extensions and MIME types in either direction, across images, video, audio, docs, archives, code, and fonts. Markdown to HTML Converter Convert Markdown to clean, safe HTML instantly in your browser — no upload, no libraries. Morse Code Translator Convert text to Morse code or Morse code to text instantly, with audio playback of the dot-dash timing. Open Graph Tag Generator Build Open Graph and Twitter Card meta tags with a live social share preview. Password Generator Create strong, random, secure passwords instantly — private and browser-based. Query String Builder Turn key and value pairs into a correctly percent-encoded URL query string. RGB to Hex Converter Convert RGB or RGBA values to a hex color code instantly with sliders, live swatch and one-click copy. ROT13 Encoder & Decoder Encode or decode ROT13 text instantly, or use the ROT-N slider for any Caesar cipher shift. Regex Tester Test regex patterns live with instant match highlighting, capture groups, and flags. Remove Duplicate Lines Paste a list and instantly remove duplicate lines with case-sensitivity, trimming, and sort options. Remove Line Breaks Join text broken by line breaks into clean paragraphs, with paragraph-preservation and spacing options. SQL Formatter Tokenize and pretty-print SQL queries with clause indentation, keyword casing, and smart comma handling. SVG Path Generator Assemble move, line, curve and arc commands into a valid SVG path. Semantic Version Comparator Compare two semver strings and see which is newer and exactly why. Sitemap Validator Check an XML sitemap for well-formedness, required elements, size limits and bad URLs. Sort Text Lines Sort any list of lines alphabetically, numerically, by length, or in reverse — instantly, in your browser. String to Slug Converter Turn any text into a clean, lowercase, hyphenated URL slug with accent stripping. Tailwind Class Converter Convert Tailwind utility classes to plain CSS, and plain CSS back into utility classes. Text Diff Checker Compare two texts and see added, removed, and unchanged lines highlighted instantly. Text to Binary Convert any text into space-separated 8-bit UTF-8 binary code, instantly in your browser. Text to Speech Type or paste text and hear it read aloud with adjustable voice, rate, pitch, and volume. Title Case Converter Convert text to correct Title Case with smart minor-word handling, plus UPPERCASE, lowercase, and Sentence case. URL Encoder Decoder Encode or decode any text or URL to and from percent-encoding, with whole-URL vs component modes. URL Parser Break any URL into scheme, host, port, path, query parameters and fragment. UUID Generator Generate up to 100 random version-4 UUIDs at once, ready to copy into your code or database. Unicode Character Converter Break down text into Unicode code points, decimal, hex, HTML entities, and JS escapes, or convert back. Unit Converter Free unit converter: cm to inches, kg to lbs, Celsius to Fahrenheit & more. User-Agent Parser Parse any User-Agent string into browser, version, OS, device type, and rendering engine, free and instant. Viewport Size Checker See your live viewport width/height, screen resolution, pixel ratio, and current CSS breakpoint, updating on resize. Word Frequency Counter See which words repeat most in your text, ranked by count and percentage. XML Formatter Pretty-print or minify XML instantly with correct tag-aware indentation. XML to JSON Converter Convert XML to JSON instantly in your browser with a hand-rolled parser, no uploads. YAML to JSON Convert YAML configuration into clean, pretty-printed JSON instantly in your browser. cURL to Fetch Converter Turn any curl command into working fetch() code with headers, body and auth handled. 📝 Word Counter Free live word & character counter — words, characters, sentences, reading time.