Browse by intent
What do you need to do today?
Write & edit
Counters, casing, cleanup, structure
Fancy text
Bold, italic, cursive, bubble, zalgo
Translate
Morse, NATO, binary, ROT13, pirate, Yoda
Lorem ipsum
Placeholder text in 20+ languages
Rank & route
Slugs, density, hashtags, tweet threads
Build & debug
JSON, regex, Base64, JWT, beautifiers
Generate
UUIDs, passwords, QR, dice, randoms
Color
Palettes, gradients, mix, blindness sim
Images
Filters, resize, crop, picker — all browser-side
Math
Calculator, percent, area, base converter
Time & flow
Date diff, stopwatch, pomodoro, typing tests
Files
Base64 encode/decode, split, join
The catalog
Search, filter, then jump straight to the tool.
Text
Word Counter
Count words, characters, sentences, paragraphs, and spacing metrics in real time.
Case Converter
Convert text between uppercase and lowercase instantly for editing and cleanup.
Remove Line Breaks
Join broken lines and remove empty rows from copied text.
Remove Extra Spaces
Normalize whitespace by removing double spaces, tabs, and messy spacing.
Title Case Converter
Convert text into title case for article headlines, product titles, and content blocks.
Sentence Case Converter
Convert text into sentence case for cleaner paragraphs, descriptions, and support replies.
Text Reverser
Reverse letters and characters instantly for experiments, formatting checks, and playful content tasks.
Duplicate Line Remover
Remove repeated lines from pasted text while keeping one clean version of each entry.
Line Sorter
Sort text lines alphabetically to organize lists, notes, exports, and planning documents.
Text Trimmer
Trim whitespace around each line to make copied text cleaner and easier to reuse.
Snake Case Converter
Convert text into snake_case for variables, database fields, filenames, and internal naming.
Kebab Case Converter
Convert text into kebab-case for CSS classes, file names, route names, and frontend patterns.
Camel Case Converter
Convert text into camelCase for JavaScript variables, JSON keys, and frontend state names.
Pascal Case Converter
Convert text into PascalCase for component names, classes, and exported identifiers.
HTML Stripper
Remove HTML tags from content and keep only readable text for reuse, cleanup, or analysis.
Case Alternator
Convert text into alternating case for playful content, experiments, and standout formatting.
Sentence Counter
Count sentences, paragraphs, and average sentence length for quick content reviews.
Text Repeater
Repeat a word, phrase, or line multiple times for testing, layout work, and content experiments.
Word Sorter
Sort words alphabetically to clean lists, tags, outlines, and short text inputs.
Text to List Generator
Split comma-separated or sentence-like text into one item per line for cleaner list workflows.
Character Counter
Count characters, words, sentences, and lines in real time as you type.
Text Diff & Compare
Compare two text blocks line by line to spot differences quickly.
Bionic Reading Converter
Bolden the first half of each word to support faster, fixation-based reading.
UPPERCASE Converter
Convert text to all uppercase for headings, labels, or shouting.
lowercase Converter
Convert text to all lowercase for clean, modern, brand-friendly typesetting.
CONSTANT_CASE Converter
Convert text into CONSTANT_CASE for environment variables and constants.
dot.case Converter
Convert text into dot.case for filenames, configs, and namespaced keys.
Swap Case Converter
Swap upper and lowercase letters in any text instantly.
Remove Blank Lines
Strip empty lines from pasted text for cleaner exports and lists.
Find and Replace
Find and replace text with optional case sensitivity and regex support.
Pangram Checker
Check whether a sentence uses every letter of the English alphabet.
Vowel & Consonant Counter
Count vowels, consonants, and vowel ratio in a piece of text.
Syllable Counter
Estimate the number of syllables in any English text.
Paragraph Counter
Count paragraphs, sentences, and average words per paragraph.
Reverse Word Order
Reverse the order of words in each line of text.
Reverse Line Order
Reverse the order of lines in a list or text block.
Add Text to Each Line
Prepend or append a constant string to every line of a list.
Tabs to Spaces
Replace tab characters with a configurable number of spaces.
Spaces to Tabs
Replace runs of spaces with tab characters at a configurable width.
Filter Lines
Keep only the lines that match a substring or regular expression.
Emoji-fier
Sprinkle relevant emoji into any text by matching common keywords.
Paragraph Diff
Compare two paragraphs and highlight added and removed words inline.
Fancy Text
Bold Text Generator
Convert text into Unicode bold for posts, profiles, and bios that don't support markdown.
Italic Text Generator
Generate Unicode italic and bold-italic styled text for cross-platform posts.
Strikethrough Text Generator
Generate strikethrough text using Unicode combining characters.
Small Caps Generator
Convert text into small caps using Unicode small capital letters.
Cursive Text Generator
Generate cursive (script) styled text using Unicode mathematical script letters.
Bubble Text Generator
Convert text into circled / bubble Unicode characters for fun captions and titles.
Zalgo Text Generator
Generate corrupted-looking zalgo text with adjustable intensity.
Upside-Down Text Generator
Flip text upside-down using Unicode rotated characters.
ASCII Art from Text
Convert any short word into block ASCII art letters.
Handwriting Text
Render text in handwriting fonts with adjustable size, style, and ink color.
Translators
ROT13 Cipher
Apply ROT13 to scramble or unscramble text using the classic letter rotation.
Markdown to HTML
Convert markdown into clean HTML for blog imports and CMS workflows.
HTML to Markdown
Convert HTML into markdown so you can move web content into a clean doc.
Binary Translator
Convert text to binary and back using ASCII / UTF-16 character codes.
Morse Code Translator
Convert plain text to Morse code with letters, digits, and punctuation.
NATO Phonetic Translator
Convert words into NATO phonetic alphabet (Alpha, Bravo, Charlie…).
Pirate Translator
Translate plain text into pirate-style speech with classic pirate slang.
Yoda Translator
Translate plain English into Yoda-style word order.
Shakespeare Translator
Convert plain English into Shakespearean style with thee, thou, hast, doth.
Acrostic Poem Generator
Generate a quick acrostic poem from any short word or name.
Markdown Table Builder
Build markdown tables visually — type into cells, get formatted markdown back.
CSV to Markdown Table
Convert any CSV (with quoted fields) into a properly aligned markdown table.
Text to Speech
Read aloud any text using your browser's built-in voices, with rate and pitch controls.
Lorem Ipsum
Lorem Ipsum Generator
Generate placeholder paragraphs for design mockups, wireframes, and layout testing.
Chinese Lorem Ipsum
Generate Chinese placeholder paragraphs for layouts and design mockups.
Japanese Lorem Ipsum
Generate Japanese placeholder paragraphs for layouts and design mockups.
Korean Lorem Ipsum
Generate Korean placeholder paragraphs for layouts and design mockups.
Arabic Lorem Ipsum
Generate Arabic placeholder paragraphs for RTL layouts and mockups.
Hebrew Lorem Ipsum
Generate Hebrew placeholder paragraphs for RTL design layouts.
Russian Lorem Ipsum
Generate Russian placeholder paragraphs for Cyrillic design layouts.
Spanish Lorem Ipsum
Generate Spanish placeholder paragraphs for layouts and mockups.
French Lorem Ipsum
Generate French placeholder paragraphs for layouts and mockups.
German Lorem Ipsum
Generate German placeholder paragraphs for layouts and mockups.
Italian Lorem Ipsum
Generate Italian placeholder paragraphs for layouts and mockups.
Portuguese Lorem Ipsum
Generate Portuguese placeholder paragraphs for layouts and mockups.
Dutch Lorem Ipsum
Generate Dutch placeholder paragraphs for layouts and mockups.
Polish Lorem Ipsum
Generate Polish placeholder paragraphs for layouts and mockups.
Turkish Lorem Ipsum
Generate Turkish placeholder paragraphs for layouts and mockups.
Greek Lorem Ipsum
Generate Greek placeholder paragraphs for layouts and mockups.
Hindi Lorem Ipsum
Generate Hindi placeholder paragraphs for Devanagari design layouts.
Vietnamese Lorem Ipsum
Generate Vietnamese placeholder paragraphs for layouts and mockups.
Thai Lorem Ipsum
Generate Thai placeholder paragraphs for layouts and mockups.
Indonesian Lorem Ipsum
Generate Indonesian placeholder paragraphs for layouts and mockups.
Swedish Lorem Ipsum
Generate Swedish placeholder paragraphs for layouts and mockups.
SEO
Slug Generator
Turn titles into clean SEO-friendly URL slugs for articles, products, and landing pages.
Keyword Density Checker
Measure repeated keyword usage inside text to support on-page reviews and content editing.
Twitter / X Character Counter
Count characters with a 280-character ceiling for tweets and short-form posts.
Tweet Thread Splitter
Split long content into a numbered Twitter / X thread under the 280-character limit.
Word Frequency Counter
Rank repeated words with counts and percentages to spot keyword density issues.
Hashtag Generator
Generate variations of hashtags from a topic for social media planning.
Meta Tag Generator
Generate complete <meta> tags including Open Graph and Twitter Card from a single form.
Open Graph Preview
Preview how your URL appears on Facebook, LinkedIn, and Twitter / X before publishing.
Social Media Post Preview
Preview how a post will look on Instagram, Twitter/X, LinkedIn, and Facebook before publishing.
SERP Preview
Preview how your page will appear in Google search results with live title, URL, and meta description editing.
robots.txt Builder
Build a robots.txt with disallow rules, sitemap reference, and crawl-delay directive.
Sitemap.xml Builder
Generate a valid sitemap.xml from a list of paths with last-modified and priority.
UTM Link Builder
Build trackable campaign URLs with Google-standard UTM parameters.
Title Length Checker
Check page-title length in characters and pixel width with a Google SERP preview.
Meta Description Checker
Validate meta description length with a 160-character limit and a SERP preview.
Headline Analyzer
Score your headline for SEO and engagement potential with a 100-point breakdown.
Bio Link Generator
Generate a beautiful bio link page like Linktree for Instagram, TikTok, and Twitter bios.
FAQ Schema Generator
Generate FAQPage JSON-LD structured data from a list of question / answer pairs.
YouTube Thumbnail Downloader
Extract and download YouTube video thumbnails in all available resolutions.
Readability Score Checker
Measure text readability with Flesch-Kincaid, Gunning Fog, and reading level scores for better content.
Keyword Suggestion Generator
Generate related keyword variations, long-tail phrases, and question-based terms from a seed keyword.
Open Graph Tag Generator
Generate complete Open Graph and Twitter Card meta tags for rich social media sharing previews.
Email Subject Line Tester
Score and preview email subject lines for length, spam triggers, personalization, and mobile display.
Developer
JSON Formatter
Beautify, minify, and validate JSON directly in the browser.
Base64 Encoder
Encode text into Base64 for development, transport, testing, and integration workflows.
Base64 Decoder
Decode Base64 strings back into readable text directly in the browser.
URL Encoder
Encode URLs and query values safely for links, parameters, and integration workflows.
URL Decoder
Decode encoded URLs and query strings into readable text.
HTML Encoder
Escape special characters into safe HTML entities for snippets, templates, and content systems.
HTML Decoder
Decode HTML entities into readable text for copy cleanup, migration work, and debugging.
SHA-256 Generator
Generate SHA-256 hashes for strings directly in the browser for checks, demos, and dev workflows.
JWT Decoder
Decode JWT header and payload locally to inspect claims, timestamps, and token structure.
Binary Number Converter
Convert between binary, decimal, and hexadecimal representations.
Hexadecimal Converter
Convert hex values to decimal, binary, and any other base up to 36.
Number Base Converter
Convert numbers between any two bases from 2 to 36.
Roman Numerals Converter
Convert numbers (1–3999) to Roman numerals and back.
CSS Beautifier
Format minified CSS into a human-readable layout with consistent indentation.
CSS Minifier
Compress CSS by removing whitespace and comments without changing the rules.
CSS Inliner
Move CSS rules into inline style attributes — useful for transactional email.
HTML Beautifier
Reformat HTML with proper indentation and one tag per line.
Syntax Highlighter
Highlight code in JavaScript, TypeScript, HTML, CSS, or JSON for sharing and embedding.
Cron Expression Builder
Translate any cron expression into plain English and pick from common patterns.
UUID v7 Generator
Generate time-sortable UUID v7 identifiers (RFC 9562) for primary keys.
cURL to fetch()
Convert any cURL command into an equivalent JavaScript fetch() call.
Number to Words
Convert any number into its English-language equivalent (one, two, three…).
YAML ↔ JSON Converter
Convert between YAML and JSON formats with two-way translation.
Apache .htaccess Redirect
Generate Apache .htaccess redirect rules with 301, 302, and regex support.
JWT Signer (HS256)
Sign JSON Web Tokens with HMAC-SHA256 directly in your browser.
Password Strength Checker
Estimate password entropy, brute-force time, and tick a 5-point checklist.
Base64 to Image
Decode a Base64 string or data URL back into a downloadable image.
AES Text Encryptor
Encrypt and decrypt text with AES-256-GCM using a password (PBKDF2 200k).
Box Shadow Generator
Build CSS box-shadow values with offset, blur, spread, color, and inset controls.
Gradient Text Generator
Generate CSS for gradient-colored text with customizable angle and colors.
Border Radius Generator
Build asymmetric border-radius values for unique card and button shapes.
Clip-path Generator
Generate CSS clip-path values for triangles, pentagons, circles, ellipses, and arrows.
CSS Triangle Generator
Generate pure-CSS triangles using the border trick, with size and direction controls.
CSS Animation Generator
Generate ready-to-paste CSS keyframes for pulse, spin, bounce, shake, and more.
Glassmorphism Generator
Build the trendy frosted-glass UI effect with backdrop-filter and transparency.
Neumorphism Generator
Generate soft-UI / neumorphism CSS with paired light and shadow box-shadows.
Regex Tester
Test, validate, and debug regular expressions in real time with match highlighting and group capture.
Markdown Preview
Write Markdown and see a live rendered preview with syntax highlighting for code blocks.
SQL Formatter
Beautify and format SQL queries with proper indentation, keyword capitalization, and readable structure.
Environment Variable Generator
Generate .env templates with secure keys, URLs, and configuration values for development projects.
HTTP Status Code Reference
Browse, search, and understand every HTTP status code with plain-English explanations and common use cases.
Docker Compose Converter
Convert between Docker Compose file format versions with syntax validation and compatibility notes.
Code Minifier
Minify JavaScript, CSS, and HTML code by removing whitespace, comments, and unnecessary characters.
Generators
UUID Generator
Generate random v4 UUIDs in bulk for development, testing, and system workflows.
Password Generator
Generate strong passwords with adjustable length, numbers, and symbols.
QR Code Generator
Generate QR codes from text, links, phone numbers, or short campaign inputs instantly.
Random Number Generator
Generate random whole numbers in a custom range for testing, games, giveaways, or quick decisions.
List Randomizer
Shuffle line-based lists into a random order for games, assignments, testing, and lightweight selection tasks.
Random Word Generator
Generate a list of random English words for prompts and games.
Random Letter Generator
Generate random letters with optional digits for games and puzzles.
Coin Flipper
Flip a coin one or many times and see the heads/tails distribution.
Dice Roller
Roll any number of dice with any number of sides.
Gaussian Random Numbers
Generate normally-distributed random numbers with a custom mean and standard deviation.
Placeholder Image Generator
Generate solid-color placeholder images at any size with custom labels and colors.
Avatar from Initials
Generate clean SVG avatars from a name's initials with custom colors and shape.
Random IP Generator
Generate random IPv4 or IPv6 addresses for testing and demos.
Random User Generator
Generate fake names, emails, addresses, and IPs for testing purposes.
Random Color Generator
Generate any number of random hex colors with one-click copy.
Bingo Number Generator
Draw bingo numbers (B/I/N/G/O · 1–75) one at a time without repeats.
Team Generator
Randomly divide a list of names into balanced teams for games, projects, and group activities.
Decision Wheel Spinner
Spin a colorful wheel to make random choices, pick winners, and resolve group decisions.
Random Name Generator
Generate realistic random names for characters, testing data, personas, and creative projects.
Color
Color Palette Generator
Generate simple color palettes for mockups, dashboards, content blocks, and brand exploration.
Gradient Generator
Build simple CSS gradients for hero sections, cards, banners, and product visuals.
HEX to RGB Converter
Convert HEX color values into RGB output for CSS, design systems, and front-end implementation.
RGB to HEX Converter
Convert RGB values into HEX color codes for UI work, brand systems, and design references.
Lighten Color
Brighten any HEX color by a precise percentage.
Darken Color
Reduce the lightness of any HEX color by a precise percentage.
Saturate Color
Increase the saturation of a HEX color in HSL space.
Desaturate Color
Reduce the saturation of a HEX color in HSL space.
Invert Color
Invert any HEX color to its RGB complement.
Grayscale Color
Convert a HEX color to its luminance-based grayscale equivalent.
Color Mixer
Blend two colors at any ratio to find the in-between shade.
Color Blindness Simulator
Preview how a color appears under protanopia, deuteranopia, tritanopia, and achromatopsia.
Tailwind Color Picker
Browse and copy any Tailwind CSS color shade with one click.
WCAG Contrast Checker
Check color contrast against WCAG 2.1 AA and AAA standards with live preview.
CSS Named Colors
Searchable reference of all 147 CSS named colors with hex values.
Image Palette Extractor
Pull the dominant colors out of any uploaded image as a clickable palette.
Color Gradient Mixer
Blend two or more colors into smooth gradients with CSS, SVG, and image export options.
Images
Invert Image Colors
Apply photographic negative inversion to any image in the browser.
Flip Image
Mirror an image horizontally for layouts and design experiments.
Grayscale Image
Strip the saturation from any image to produce a grayscale version.
Sepia Image
Apply a vintage sepia tone to any image.
Blur Image
Apply a Gaussian-style blur to any image with adjustable radius.
Image Brightness
Adjust image brightness from 0% (black) to 200% (very bright).
Image Contrast
Adjust image contrast for a punchier or softer result.
Image Hue Rotate
Rotate the hue wheel of an image to produce stylized color variants.
Image Saturation
Boost or drop the saturation of any image.
Rotate Image 90°
Rotate any image 90 degrees clockwise.
Rotate Image 180°
Rotate any image upside-down.
Resize Image
Resize any image with optional aspect-ratio locking.
Crop Image
Crop any image to a precise rectangular region with pixel coordinates.
Image Color Picker
Click anywhere on an image to extract the HEX color of that pixel.
Image Compressor
Compress JPEG, PNG, and WebP images entirely in the browser.
Image to ASCII Art
Convert any uploaded image into ASCII art with adjustable resolution.
Image to Base64
Convert an image file to a Base64 data URI string entirely in the browser.
Image Watermark Tool
Add text or image watermarks to photos with adjustable position, opacity, and size controls.
Favicon Generator
Create favicons in multiple sizes from any image with ICO, PNG, and Apple Touch Icon export.
SVG to PNG Converter
Convert SVG vector graphics to PNG raster images with custom resolution and transparent background support.
Math
Percentage Calculator
Calculate what percentage one number is of another and find percentage values quickly.
Percentage Change Calculator
Calculate percentage increase or decrease between two values for reporting and performance tracking.
Tip Calculator
Calculate tip amounts and total bills quickly for meals, services, deliveries, and shared payments.
Unit Price Calculator
Calculate price per unit so you can compare offers, packages, and purchasing options faster.
Calculator
Run quick arithmetic in the browser with parentheses, percentages, and decimals.
Unit Converter
Convert between units of measurement including length, weight, temperature, volume, speed, and data.
Area Calculator
Compute the area of squares, rectangles, circles, triangles, and trapezoids.
Rule of Three (Direct)
Solve direct proportion problems where more A produces more B.
Rule of Three (Inverse)
Solve inverse proportion problems where more A produces less B.
Generate Number List
Generate a list of numbers between two bounds with a custom step.
Min & Max of a List
Find the minimum, maximum, and range of a list of numbers.
Average of a List
Compute the mean, median, and sum of a list of numbers.
Sort Numbers
Sort a list of numbers in ascending order, ignoring non-numeric tokens.
Filter Numbers
Keep only numbers that satisfy a comparison (greater, less, equal) against a threshold.
Currency Converter
Convert between major world currencies instantly using approximate exchange rates.
Age in Days Calculator
Calculate your exact age in days, hours, minutes, and seconds from your birthdate to the current moment.
Loan Calculator
Calculate monthly payments, total interest, and amortization schedules for any loan type.
BMI Calculator
Calculate your Body Mass Index and see your weight category based on WHO standards.
Compound Interest Calculator
Calculate how your investments grow over time with compound interest, regular contributions, and customizable compounding frequency.
Time & Productivity
Reading Time Calculator
Estimate article reading time from word count for blogs, guides, and educational pages.
Typing Speed Test
Measure your typing speed in words per minute with live accuracy feedback.
15 Second Typing Test
Quick burst typing test that reports words per minute and accuracy in 15 seconds.
30 Second Typing Test
Half-minute typing benchmark with live WPM and accuracy feedback.
1 Minute Typing Test
One-minute typing test with live words-per-minute and accuracy stats.
2 Minute Typing Test
Two-minute typing test for a more reliable WPM and accuracy score.
3 Minute Typing Test
Three-minute typing test built for stamina-focused WPM measurement.
5 Minute Typing Test
Five-minute typing test for a solid average words-per-minute score.
10 Minute Typing Test
Ten-minute typing test for endurance benchmarking and serious WPM training.
Scrabble Word Finder
Find playable Scrabble words from your tile letters with point scores.
Pomodoro Timer
Run focus blocks and short or long breaks with a clean, distraction-free timer.
Mind Map
Build a quick outline-style mind map and export it as a copyable list.
Words to Pages
Convert a word count into an estimated page count for single or double spacing.
Pages to Words
Convert a page count into an estimated word count for single or double spacing.
Words to Minutes
Estimate reading or speaking time in minutes from a word count.
WPM Calculator
Calculate words-per-minute from any custom text and time elapsed.
Speech Time Calculator
Estimate speech length in minutes for slow, average, and fast paces.
Word Unscrambler
Find valid English words that can be made from a small set of letters.
Date / Time Difference
Measure the gap between two dates in years, months, weeks, days, hours, and seconds.
Add to a Date
Add days, weeks, months, or years to any date.
Subtract from a Date
Subtract days, weeks, months, or years from any date.
Stopwatch
A precise stopwatch with lap support and millisecond resolution.
World Clock
See live clocks for any combination of major cities and timezones.
Countdown Timer
Count down (or up) to any target date with day, hour, minute, and second resolution.
Age Calculator
Calculate age in years, months, days, plus total days, hours, and minutes.
Timezone Converter
Convert any time from one timezone to another with full locale formatting.
Unix Timestamp Converter
Convert between Unix timestamps and ISO dates in both directions, with a live now value.
Files
Base64 File Encoder
Encode any file to a Base64 string for embedding or transport.
Base64 File Decoder
Decode a Base64 string back into a downloadable file.
Split Files
Split a single file into chunks of a configurable byte size.
Join Files
Concatenate multiple file parts back into a single file.
Operating principles
Tools should respect your time and your data.
OneFreeTools is built around four boring promises. They are also why it stays fast, free, and worth bookmarking.
- 01
No accounts, no detours
Every tool runs the moment you land. Bookmark, share, and reuse without a sign-up wall.
- 02
Browser-side by default
Your input stays on your device for the core interaction. Faster, calmer, and easier to trust.
- 03
Built for repeat workflows
Each tool links into adjacent ones, so a single task can carry across writing, SEO, and dev work.
- 04
Pages that actually teach
Original how-to, mistakes, and use cases sit beside every tool, not behind a paywall.
Ready when you are