Every tool you reach for, laid out on one bench.
Free online tools for text, code, numbers, and color — fast, no sign-up, and mostly processed right in your browser.
Browse by category
Text Tools
Count, clean, and reshape text in your browser.
Developer Tools
Formatters and converters for everyday dev tasks.
Calculators
Quick, precise calculators for everyday questions.
Color Tools
Convert and inspect colors for design and code.
Image Tools
Resize, compress, and convert images.
PDF Tools
Merge, split, and manage PDF files.
Generators
Create QR codes, passwords, and other everyday essentials.
Creator Toolkit
Hashtags, captions, palettes, and image sizing for content creators.
Freelancer Toolkit
Quotes, time tracking, and pricing tools for freelancers and agencies.
Popular tools
See allWord Counter
Count words, characters, sentences, and estimated reading time instantly. Runs entirely in your browser — your text is never uploaded.
JSON Formatter
Format, validate, and beautify JSON instantly with clear error messages when something's wrong. Runs entirely client-side.
Age Calculator
Calculate exact age in years, months, and days from any birth date, plus your next birthday countdown.
Color Converter
Convert colors between HEX, RGB, and HSL instantly with a live preview swatch.
Base64 Encoder/Decoder
Encode plain text to Base64 or decode Base64 back to plain text, entirely in your browser.
Image Compressor
Compress and resize JPEG or PNG images directly in your browser, with adjustable quality and no upload to a server.
QR Code Generator
Generate a downloadable QR code from any URL or text, with adjustable size and color, created entirely in your browser.
Password Generator
Generate strong random passwords with adjustable length and character types, using your browser's secure random generator.
Hashtag Generator
Generate a set of relevant hashtags from any topic or niche using template-based combinations.
Color Palette Generator
Generate complementary, analogous, triadic, or monochromatic color palettes from any base color.
Thumbnail Resizer
Crop and resize an image to common thumbnail and social media dimensions, processed locally in your browser.
Quote Generator
Build a line-item quote with quantities, rates, and tax, then copy it as ready-to-send text.
Images to PDF
Combine one or more images into a single downloadable PDF, reorderable and processed entirely in your browser.
Text Diff Checker
Compare two blocks of text line by line and see exactly what was added, removed, or unchanged.
Regex Tester
Test a regular expression against sample text with live match highlighting and flag support.
CSS Gradient Generator
Build a linear or radial CSS gradient visually, with multiple color stops and copyable CSS.
Merge PDF
Combine two or more existing PDF files into a single PDF, in whatever order you choose, processed entirely in your browser.
Contrast Checker
Check the contrast ratio between two colors against WCAG AA and AAA accessibility thresholds.
Compound Interest Calculator
Project how an investment grows over time with compound interest and optional regular contributions.
Color Palette Extractor
Upload an image and extract its dominant colors as a ready-to-use hex palette.
Split PDF
Extract a specific page range from a PDF into a new, separate PDF file, processed entirely in your browser.
AI Prompt Token Counter
Estimate how many tokens a prompt will use and check it against common model context limits.
Meta Tag Generator
Generate title, description, Open Graph, and Twitter Card meta tags with a live social preview.
Favicon Generator
Generate favicon and app icon PNGs in every standard size from a single source image.
UTM Campaign URL Builder
Build a campaign tracking URL with UTM parameters for source, medium, campaign, term, and content.
Text Summarizer
Condense a long passage into its most representative sentences, entirely in your browser.
JWT Decoder
Decode a JSON Web Token's header and payload to inspect its contents, without verifying the signature.
Image Cropper
Crop an image by dragging a selection box, with optional aspect ratio locking.
Image Watermark Tool
Add a customizable text watermark to an image, with control over position, size, color, and opacity.
Date Calculator
Calculate the number of days between two dates, or add or subtract days from a date.
Calorie Calculator
Estimate your daily calorie needs (BMR and TDEE) based on age, height, weight, and activity level.
Final Grade Calculator
Calculate the score you need on a final exam to reach your desired overall grade.
Time Zone Converter
Convert a specific date and time from one time zone into several others at once.
Random Name Picker
Paste a list of names and randomly pick one, with an option to remove each name after it's picked.
Cooking Measurement Converter
Convert between cooking measurements like cups, tablespoons, and teaspoons, plus approximate ingredient weights in grams.
Newest tools
Age Calculator
Calculate exact age in years, months, and days from any birth date, plus your next birthday countdown.
Duplicate Line Remover
Remove duplicate lines from any list or block of text, with options for case sensitivity and whitespace trimming.
Base64 Encoder/Decoder
Encode plain text to Base64 or decode Base64 back to plain text, entirely in your browser.
BMI Calculator
Calculate Body Mass Index from height and weight, in either metric or imperial units, with a clear category result.
Image Compressor
Compress and resize JPEG or PNG images directly in your browser, with adjustable quality and no upload to a server.
QR Code Generator
Generate a downloadable QR code from any URL or text, with adjustable size and color, created entirely in your browser.
Unit Converter
Convert between common length, weight, and temperature units instantly, with precise results.
Hashtag Generator
Generate a set of relevant hashtags from any topic or niche using template-based combinations.
Thumbnail Resizer
Crop and resize an image to common thumbnail and social media dimensions, processed locally in your browser.
Time Tracker
Start and stop a timer to track time spent on tasks, with a locally saved log you can export as CSV.
Images to PDF
Combine one or more images into a single downloadable PDF, reorderable and processed entirely in your browser.
Markdown Previewer
Write Markdown and see a live rendered preview side by side, with HTML you can copy out.
Currency Converter
Convert between major currencies using a live exchange rate sourced from the European Central Bank.
Text Diff Checker
Compare two blocks of text line by line and see exactly what was added, removed, or unchanged.
CSS Gradient Generator
Build a linear or radial CSS gradient visually, with multiple color stops and copyable CSS.
Merge PDF
Combine two or more existing PDF files into a single PDF, in whatever order you choose, processed entirely in your browser.
Hourly Rate Calculator
Work out the hourly rate you need to charge to hit a target income, accounting for time off, expenses, and non-billable time.
Readability Score Calculator
Check the Flesch Reading Ease and Flesch-Kincaid Grade Level of any text instantly.
Cron Expression Explainer
Paste a 5-field cron expression and get a plain-English explanation of when it runs.
Color Palette Extractor
Upload an image and extract its dominant colors as a ready-to-use hex palette.
Split PDF
Extract a specific page range from a PDF into a new, separate PDF file, processed entirely in your browser.
AI Prompt Token Counter
Estimate how many tokens a prompt will use and check it against common model context limits.
Meta Tag Generator
Generate title, description, Open Graph, and Twitter Card meta tags with a live social preview.
Favicon Generator
Generate favicon and app icon PNGs in every standard size from a single source image.
Text to Speech Reader
Have any text read aloud using your browser's built-in speech engine, with adjustable voice, speed, and pitch.
Pomodoro Timer
A focus timer using the Pomodoro Technique, with focus, short break, and long break modes.
Mock JSON Data Generator
Generate realistic-looking fake JSON records for testing, prototyping, or populating a demo UI.
Pet Age Calculator
Convert your dog's or cat's age into human years using a non-linear veterinary approximation, not the old 'times 7' rule.
Text Summarizer
Condense a long passage into its most representative sentences, entirely in your browser.
JWT Decoder
Decode a JSON Web Token's header and payload to inspect its contents, without verifying the signature.
GPA Calculator
Calculate a weighted GPA on a 4.0 scale from your courses, grades, and credit hours.
Image Cropper
Crop an image by dragging a selection box, with optional aspect ratio locking.
Image Watermark Tool
Add a customizable text watermark to an image, with control over position, size, color, and opacity.
Rotate PDF
Rotate every page in a PDF by 90, 180, or 270 degrees, processed entirely in your browser.
Event Countdown
Create a live countdown to any future date and time — a launch, deadline, or event.
Image to ASCII Art
Convert an image into text-based ASCII art, with adjustable width and a copyable result.
Date Calculator
Calculate the number of days between two dates, or add or subtract days from a date.
Calorie Calculator
Estimate your daily calorie needs (BMR and TDEE) based on age, height, weight, and activity level.
Sleep Cycle Calculator
Find the best bedtime or wake-up time based on 90-minute sleep cycles.
Final Grade Calculator
Calculate the score you need on a final exam to reach your desired overall grade.
Time Zone Converter
Convert a specific date and time from one time zone into several others at once.
Roman Numeral Converter
Convert a number to Roman numerals, or a Roman numeral back to a number.
Random Name Picker
Paste a list of names and randomly pick one, with an option to remove each name after it's picked.
Cooking Measurement Converter
Convert between cooking measurements like cups, tablespoons, and teaspoons, plus approximate ingredient weights in grams.
Frequently asked questions
Are these tools actually free?
Yes — every tool on booliq is free to use, with no sign-up and no usage limits.
Is my data uploaded anywhere?
Most tools process your input entirely in your browser using JavaScript, so your text, files, or numbers never leave your device.
How often are new tools added?
New tools are added weekly. If a tool you need isn't here yet, it's likely on the list.