Free text & code tools — word count, JSON, Base64, regex, hashing
Quick utilities for writers and developers: a word and character counter, JSON formatter, Base64 and URL encode/decode, a regex tester that shows live matches, text diff, case converter, hashing and UUID generation. They run in your browser, so text and code you paste stay on your machine — fast for debugging, content work or cleaning up data.
Password Generator (cryptographically secure, with strength meter)
Generate strong random passwords using your browser's secure crypto API. Configurable length, character sets, and ambiguity filter.
Word Counter (with reading and speaking time)
Count words, characters, sentences, paragraphs, plus estimated reading and speaking time. Handles CJK languages correctly.
Case Converter (camel, snake, kebab, Title, etc.)
Convert text into 10 case styles: UPPER, lower, Title, Sentence, camelCase, PascalCase, snake_case, kebab-case, CONSTANT_CASE, and inverted.
Base64 Encoder / Decoder (UTF-8 and URL-safe)
Encode any UTF-8 text to Base64 or decode it back. Toggle URL-safe encoding for use in URLs and JWTs.
JSON Formatter & Minifier (validates and pretty-prints)
Pretty-print or minify JSON. Validates the input and shows a clear error with line and column on failure.
Lorem Ipsum Generator (paragraphs, sentences, words)
Generate placeholder Latin text by paragraphs, sentences, or word count. Optional 'Lorem ipsum' opening line.
URL Encoder / Decoder (percent-encoding, UTF-8 safe)
Encode any text into URL percent-encoding or decode an encoded string back. UTF-8 safe — handles emoji and CJK characters correctly.
Free Roman Numeral Converter 2026 — Numbers 1–3999 (Both Directions)
Free Roman numeral converter. Convert 1–3999 to Roman numerals (I, V, X, L, C, D, M) and back instantly. No signup, works in your browser.
UUID Generator (v4 random, v7 time-ordered)
Generate cryptographically random UUID v4 or time-ordered UUID v7. Bulk-generate up to 100 at a time with one-click copy.
Text Diff Tool (line-level comparison, color-coded)
Compare two blocks of text line by line. Added, removed, and unchanged lines are color-coded with line numbers.
Regex Tester (live matches, groups, replace)
Test JavaScript regular expressions interactively. See live highlighted matches, capture groups, and a replace preview.
Character Frequency Analyzer (letters, all chars, or words)
Count how often each character or word appears in your text. Sortable, with percentages, and optional case sensitivity.
Hash Generator (SHA-1, SHA-256, SHA-384, SHA-512)
Compute SHA-1, SHA-256, SHA-384, and SHA-512 hashes of any UTF-8 text. Browser-native Web Crypto API; nothing leaves your device.
Email Validator (syntax + common typo detection)
Validate email address syntax against RFC 5322 and detect common typos in popular providers (gmail, yahoo, hotmail, etc).
Find and Replace Text (literal or regex, with options)
Replace text with literal find/replace or full regex. Toggle case sensitivity and multi-line mode. Match count shown live.
Markdown to HTML Converter (CommonMark subset)
Convert Markdown to clean HTML in your browser. Supports headings, lists, code blocks, links, images, blockquotes, bold/italic/strikethrough.
HTML to Markdown Converter
Convert HTML to Markdown in your browser. Headings, lists, code, links, images, blockquotes, bold/italic/strikethrough.
Device Info Checker (browser, OS, hardware, network)
See your device's browser, OS, screen, hardware, GPU, storage, network, and dark-mode preferences in one place. All detected client-side.
WPM Typing Speed Test 2026 — Free Words Per Minute Counter
Free WPM typing speed test. Measure words per minute (WPM), CPM, accuracy, and elapsed time live as you type. Color-coded errors, no signup.
URL Slug Generator (SEO-friendly URLs)
Convert any title or sentence into an SEO-friendly URL slug. Configurable separator, length cap, lowercase, and Unicode support.
IPv4 Subnet Calculator (CIDR, mask, hosts)
Calculate network address, broadcast, host range, netmask, wildcard, total/usable hosts from any IPv4 + CIDR. Includes binary representation and class detection.
Password Strength Tester (entropy + crack time)
Test password strength with entropy bits, charset analysis, common-password check, and estimated crack time across attack scenarios.
Caesar Cipher Encoder / Decoder (with ROT13)
Encode or decode text with the classic Caesar cipher. Adjustable shift from -25 to +25, with one-click presets for ROT13 and the historical +3 shift.
JWT Decoder (header, payload, signature, expiry)
Decode any JWT (JSON Web Token) into header, payload, signature parts. Highlights expired tokens. Browser-only — your token never leaves your device.
CSV ↔ JSON Converter (RFC 4180 compliant)
Convert CSV to JSON or JSON to CSV. Configurable delimiter (comma/semicolon/tab/pipe), header-row toggle, RFC 4180 quoted-field handling.
JSON to YAML Converter — Bidirectional
Convert JSON to YAML or YAML to JSON instantly. Edit either side and the other updates automatically. No libraries, fully browser-based.
Reading Level Checker — Flesch Score & Grade Level
Paste text to instantly see Flesch Reading Ease score, Flesch-Kincaid Grade Level, word count, syllable count, and estimated reading time.
Typing Speed Test — WPM & Accuracy
Measure your typing speed in WPM and accuracy with a real-time interactive test. Six rotating passages, live error highlighting, and a results screen.
Unix File Permissions Calculator (chmod)
Toggle read/write/execute checkboxes for owner, group, and other. Instantly see the octal value (755, 644…) and symbolic string (rwxr-xr-x).
Keyboard Key Code Finder — keyCode, code, key Properties
Press any key to instantly see its JavaScript keyCode, code, key, which, and charCode values. Essential for web developers handling keyboard events.
Morse Code Translator — Text to Morse and Back
Translate text to Morse code or decode Morse code back to text. Supports letters, digits, and common punctuation. Free online bidirectional Morse code converter.
ASCII Table — Decimal, Hex, Binary, Octal & Character Chart
Complete ASCII character table showing decimal, hexadecimal, octal, and binary values for all 128 ASCII codes. Filter by printable or control characters and search by number, hex, or character.
Text to Binary Converter — Encode & Decode Binary Code
Convert text to binary code or binary back to readable text. Supports space-separated, newline-separated, or continuous binary output. Swap encode and decode in one click.
HTML Entity Encoder & Decoder — Named, Numeric & Hex
Encode special characters to HTML entities or decode HTML entities back to text. Supports named entities (&), decimal numeric (A), and hex (A) formats.
Text Sorter — Sort Lines Online (A–Z, Z–A, Deduplicate)
Paste any list, sort lines A–Z or Z–A, remove duplicates, and copy the result instantly.
Resistor Color Code Calculator — Decode and Encode Band Colors
Decode resistor color bands to find resistance values, or enter a value to see the matching color bands. Supports 4-band and 5-band resistors.
QR Code Generator — Free, No Login Required
Create a QR code from any text or URL and download it as a PNG — no account needed, runs entirely in your browser.
Duplicate Line Remover — Clean Text Lists Instantly
Remove duplicate lines from any text list. Supports case-insensitive matching, whitespace trimming, and keep-first or keep-last control.
Reverse Text Generator — Flip Characters, Words, or Lines
Reverse any text by characters, words, or lines. Correctly handles Unicode, emoji, and multi-byte characters. Instant copy to clipboard.
Reading Time Calculator – Words to Minutes
Estimate how long a text takes to read at your reading speed.