Free online tools that just work
A collection of small, fast web utilities — text counters, formatters, encoders, and browser checks. Free, no signup, and almost all of them run entirely in your browser. There is nothing to install and nothing to sign up for — open a tool, get your answer, and get on with your day.
44 tools and counting.
Text Tools
Count, transform, and inspect text — including the transcript of a YouTube video.
Word Counter
Free online word counter. Count words, characters, sentences, and paragraphs instantly as you type or paste text.
Character Counter
Free online character counter. Instantly count characters, letters, and spaces as you type. Perfect for tweets, SMS, and meta description limits.
Reverse Text Generator
Reverse any text instantly — flip letters, words, or lines backwards. Free online reverse text generator that runs in your browser.
YouTube Transcript Generator
Paste a YouTube link and get the full video transcript as text. Free YouTube transcript extractor — copy or download in one click.
Developer Tools
Formatters, converters, validators, and encoders for everyday development work.
JSON Formatter and Validator
Format, validate, beautify, or minify JSON online. Paste JSON and get clean, readable output instantly. Runs entirely in your browser.
XML Formatter
Format, beautify, or minify XML online. Paste XML and get clean, indented output instantly. Runs entirely in your browser.
SQL Formatter
Format, beautify, or minify SQL online with a dialect picker for MySQL, PostgreSQL, SQL Server, and SQLite. Runs entirely in your browser.
Regex Tester
Test a regular expression against your own text with live match highlighting, a capture-group table, and a replace preview. Runs in your browser.
JSON to CSV Converter
Convert JSON to CSV in your browser. Flattens nested objects, quotes safely, and downloads a spreadsheet-ready file. Nothing is uploaded.
CSV to JSON Converter
Convert CSV to JSON in your browser. Detects the delimiter, handles quoted fields, and types numbers and booleans. Nothing is uploaded.
JSON to YAML Converter
Convert JSON to YAML in your browser. Keeps your key order, quotes the strings other YAML readers would misread, and never uploads your config.
YAML to JSON Converter
Convert YAML to JSON in your browser. Resolves anchors and merge keys, handles multi-document files, and refuses expansion bombs. Nothing is uploaded.
Number Base Converter
Convert numbers between binary, octal, decimal, hexadecimal, and any base from 2 to 36. Exact past 64 bits. Runs in your browser, no signup.
Markdown Preview
Write markdown and see the rendered result beside it, with tables and task lists. Copy the HTML. Runs in your browser, nothing is uploaded.
Cron Expression Generator
Turn a cron expression into plain English, build one from dropdowns, and see the next five run times on your own clock. Runs in your browser.
HTML Entity Encoder and Decoder
Escape text to HTML entities or decode entities back to text. Named and numeric references, emoji-safe, nothing uploaded. Runs in your browser.
Calculators
Quick answers for the numbers, dates, and times people look up most often.
Unit Converter
Convert length, weight, temperature, area, volume, and speed instantly. Exact conversion factors, a table of every unit, and nothing leaves your browser.
Date Calculator
Count the days between two dates, or add and subtract days, weeks, months, and years from any date. Free date calculator, in your browser.
Time Zone Converter
Convert a date and time between any two time zones, with daylight saving handled and a live world clock. Runs in your browser, no signup.
Sleep Calculator
Work out when to go to bed, or when to wake up if you sleep now, using 90-minute sleep cycles and an adjustable fall-asleep buffer. Runs in your browser.
Images & Files
Merge or split a PDF, shrink a picture, generate a QR code or barcode, open and convert 3D models — nothing is uploaded.
QR Code Generator
Create a free QR code from any text or URL in seconds. Download as PNG. No watermark, no signup, generated in your browser.
Barcode Generator
Free barcode generator for Code 128, EAN-13, UPC-A and Code 39. Check digits calculated for you. Download PNG or SVG — made in your browser.
Image Compressor
Compress JPEG, PNG and WebP with a quality slider and before/after sizes. Real PNG quantization, in your browser — nothing is uploaded.
GLB Viewer
Free online GLB viewer. Drag in a .glb file to orbit, zoom, and inspect your 3D model, with mesh and triangle counts. Runs entirely in your browser.
GLB to Meshy-Compatible Converter
Convert a compressed GLB into a plain, Meshy-compatible GLB. Decodes Meshopt and Draco and removes mesh quantization, entirely in your browser.
Merge PDF
Combine PDF files into one, in the order you choose. Runs entirely in your browser — your documents are never uploaded and no copy is kept.
Split PDF
Split a PDF or pull out the pages you need, by range or one file per page. Runs in your browser — nothing is uploaded and no copy is kept.
Network & Location
See what the internet knows about your connection — IP address, city, region, and more.
What Is My IP Address?
See your public IP address instantly (IPv4 and IPv6). Free IP lookup with no ads, no logging, and no signup.
What City Am I In?
Find out what city you are in right now based on your IP address. Fast, free, and private — no signup required.
What State Am I In?
Find out which state or region you are in based on your IP address. Instant, free, and private.
What Is My Zip Code?
Find the zip code / postal code for your current location based on your IP address. Instant and free.
What Country Am I In?
Detect which country you are browsing from based on your IP address. Instant, free, and private country lookup.
What Is My Location?
Find your current location using your browser's geolocation or your IP address. Free, instant, and nothing is stored.
Browser & Device
Check what your browser reports about itself, your screen, and your settings.
What Is My User Agent?
See your browser's user agent string instantly, with a plain-English breakdown of your browser, engine, and operating system.
What Operating System Do I Have?
Instantly detect your operating system and version — Windows, macOS, Linux, Android, or iOS — right from your browser.
What Is My Screen Size?
Check your screen size, resolution, and pixel density instantly. See your display's width and height in pixels.
What Is My Window Size?
See your browser window and viewport size in pixels, updating live as you resize. Handy for responsive design testing.
Are Cookies Enabled in My Browser?
Check if cookies are enabled in your browser in one click, and learn how to turn cookies on or off in Chrome, Safari, Firefox, and Edge.
Webcam Test
Test your webcam in one press: live preview, real resolution and frame rate, camera picker and snapshot. Nothing is uploaded — it all stays local.
Keyboard Tester
Test every key on your keyboard online. Keys light up as you press them, with event.code, keyCode, n-key rollover, and stuck-key detection.
Gamepad Tester
Test your controller online: live button and trigger pressure, stick drift and deadzone measurement, rumble test. Nothing leaves your browser.
Mic Test
Test your microphone in one click: live level meter, waveform, and record-and-play-back. Nothing is uploaded — the audio never leaves your browser.
Speaker Test
Test your speakers or headphones online: left and right channel tones, a stereo balance check, and a 20 Hz to 20 kHz frequency sweep. No signup, no ads.
About
How this site is built and what it is built from.