Simple tools. Less friction.
Handle everyday tasks without sign-up or setup.
Use 64 free browser tools for text, calculations, dates, images, PDFs, data, and more.
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Featured tools
Character Counter
A free character counter with a large writing area, instant character, word, line and UTF-8 byte counts, plus local autosave.
Open toolImage to PDF
Convert JPG, PNG, and WebP images to PDF directly in your browser. Combine multiple images into one PDF with no upload required.
Open toolPDF Merge & Split
Merge multiple PDF files or extract selected pages for free. Your PDFs are processed entirely in your browser and are not uploaded.
Open toolSafe QR Code Generator
Create static QR codes for URLs, text, Wi-Fi, email, and phone numbers. Review the exact content first, then save as PNG or SVG—no signup and no built-in expiry.
Open toolDate & Day Calculator
Calculate days between two dates or find the date a certain number of days before or after another date. Free and easy to use.
Open toolAge Calculator
Calculate your age from your date of birth. Check your age on a specific date and see how many days remain until your next birthday.
Open toolAll tools
Text & writing
15 toolsCharacter Counter
A free character counter with a large writing area, instant character, word, line and UTF-8 byte counts, plus local autosave.
Open toolWhitespace & Line Break Cleaner
A free tool for cleaning line breaks, blank lines, spaces, and tabs. Compare the original and processed text side by side, with autosave, copy, and TXT download.
Open toolFull-width & Half-width Converter
A free full-width and half-width converter for letters, numbers, symbols, spaces, and katakana, with side-by-side comparison, autosave, copy, and TXT download.
Open toolUppercase & Lowercase Converter
A free case converter for uppercase, lowercase, sentence case, title case, and inverted case, with instant conversion, autosave, copy, and TXT download.
Open toolWord Frequency Counter
A free word frequency counter with frequency percentages, Japanese word segmentation, number exclusion, minimum length, and CSV copying.
Open toolText Difference Checker
A free text difference checker that highlights additions, deletions, and changes. Includes options to ignore spaces, line breaks, or letter case, plus autosave and text swapping.
Open toolSafe Bulk Find & Replace
A free bulk find and replace tool with multiple rules, change previews, per-match exclusions, autosave, copy, and TXT download. All processing stays in your browser.
Open toolCompare Two Lists
Compare two lists to find matches, differences, and all unique items. Choose case, whitespace, and blank-line options, then copy or download results as TXT.
Open toolInvisible Character Detector & Remover
Find invisible Unicode characters and zero-width spaces, see their exact positions and names, then remove or convert only the types you choose. Runs locally in your browser.
Open toolDuplicate Line Remover
A free duplicate line remover with options to ignore case and outer spaces, remove blank lines, sort results, copy, download, and autosave.
Open toolLine & List Sorter
A free line and list sorter with alphabetical, natural numeric, and length sorting, plus trimming, blank-line removal, autosave, copy, and TXT download.
Open toolLine Number Add & Remove
A free tool to add customizable line numbers or remove existing numbering, with start values, zero padding, separators, autosave, copy, and TXT download.
Open toolPrefix & Suffix Each Line
A free tool to add a prefix and suffix to every line, including an {n} sequence placeholder, start number, blank-line skipping, autosave, copy, and TXT download.
Open toolLine Filter & Extractor
A free line filter to keep or exclude matches using contains, starts with, ends with, exact match, or regular expressions, plus autosave, copy, and TXT download.
Open toolReading Time Calculator
Estimate reading time for English, Japanese, or mixed text with adjustable words-per-minute speed and character counts.
Open toolCalculators & converters
9 toolsPercentage Calculator
Calculate percentages, proportions, and percentage changes in your browser. Handles decimals, negative values, and invalid input clearly.
Open toolDiscount Calculator
Calculate the final price and savings from an original price and discount percentage. Supports 0%, 100%, and decimal prices.
Open toolSplit Bill Calculator
Split a bill between people and optionally add a tip. See the amount per person, tip amount, and grand total instantly.
Open toolFuel Cost Calculator
Estimate trip fuel use and cost with km/L, L/100 km, or US MPG. No fuel-price API or external data is used.
Open toolElectricity Cost Calculator
Estimate appliance energy use in kWh and electricity cost from wattage, daily hours, number of days, and your price per kWh.
Open toolUnit Converter
Convert units for length, weight, temperature, area, volume, and speed, including metric, US customary, and Imperial labels.
Open toolFile Size Converter
Convert B, KB, MB, GB, TB, KiB, MiB, GiB, and TiB accurately, with decimal and binary units kept distinct.
Open toolAspect Ratio Calculator
Calculate an aspect ratio such as 16:9 and find a new width or height while preserving the original proportions.
Open toolNumber Base Converter
Convert whole numbers exactly between bases 2 and 36, including binary, octal, decimal, and hexadecimal, using BigInt.
Open toolDate & time
11 toolsDate & Day Calculator
Calculate days between two dates or find the date a certain number of days before or after another date. Free and easy to use.
Open toolAge Calculator
Calculate your age from your date of birth. Check your age on a specific date and see how many days remain until your next birthday.
Open toolWork Hours Calculator
Calculate net working time from start time, end time, and break duration. Supports overnight shifts and decimal hours.
Open toolTime Duration Calculator
Calculate the difference between two calendar date-and-time values. Time-zone changes and daylight-saving transitions are not included.
Open toolTime Calculator
Add or subtract hours, minutes, and seconds from a time. Shows whether the result falls on the previous or following day.
Open toolBusiness Days Calculator
Count business days between dates or add and subtract business days, excluding weekends and custom holidays.
Open toolStopwatch
Measure elapsed time with a browser stopwatch that supports pause, resume, laps, and reset without interval-counting drift.
Open toolCountdown Timer
A timestamp-based countdown timer with hours, minutes, seconds, pause, resume, reset, and an on-screen completion notice.
Open toolPomodoro Timer
A simple Pomodoro timer with configurable work and break lengths, pause, resume, skip, and completed work-session count.
Open toolUnix Timestamp Converter
Convert Unix timestamps to UTC ISO date-time values and convert ISO values back to seconds or milliseconds.
Open toolTime Zone Converter
Convert local date and time between common IANA time zones using built-in Intl daylight-saving rules and no external API.
Open toolImages & PDF
12 toolsImage Compare & Diff
Compare two images with a slider, overlay, or pixel diff. Exact diff requires matching dimensions.
Open toolImage Optimizer & Converter
Optimize and convert JPEG, PNG, and WebP images locally in your browser. Compare appearance and file size, process multiple images, and download them individually or as a ZIP.
Open toolPDF Merge & Split
Merge multiple PDF files or extract selected pages for free. Your PDFs are processed entirely in your browser and are not uploaded.
Open toolImage to PDF
Convert JPG, PNG, and WebP images to PDF directly in your browser. Combine multiple images into one PDF with no upload required.
Open toolImage Cropper
Crop JPEG, PNG, or WebP images with free selection or 1:1, 4:3, 3:2, 16:9, and portrait presets, entirely in your browser.
Open toolImage Metadata Viewer
Inspect filename, file size, dimensions, EXIF camera and lens data, capture date, orientation, and GPS presence locally.
Open toolImage Color Picker & Palette
Pick colors from an image and copy HEX, RGB, HSL, or a palette of CSS variables.
Open toolPDF to Image
Render PDF pages as JPG, PNG, or WebP images and download them individually or as a ZIP.
Open toolPDF Page Organizer
Preview, reorder, rotate, and remove pages, then save a new PDF.
Open toolImage Metadata Remover
Save a clean copy without location and other privacy metadata. Your original image stays unchanged.
Open toolPrint Size & PPI Calculator
Calculate an image’s PPI at a chosen print size, or find the pixels needed for a target PPI.
Open toolContact Sheet Maker
Arrange images in a contact sheet and export multiple pages as PNG, JPG, or PDF.
Open toolData & web
11 toolsURL Encoder & Decoder
A free URL encoder and decoder for full URLs or components, with optional plus-space handling and autosave.
Open toolBase64 Encoder & Decoder
A free Unicode-safe Base64 encoder and decoder with URL-safe output and optional line wrapping.
Open toolJSON Formatter & Validator
A free JSON formatter and validator with 2-space or 4-space indentation, minification, recursive key sorting, clear errors, autosave, and copying.
Open toolHTML Entity Encoder & Decoder
A free HTML entity encoder and decoder with optional quote and non-ASCII encoding.
Open toolURL Slug Generator
A free URL slug generator with lowercase conversion, accent removal, Unicode preservation, separator choice, maximum length, autosave, and copying.
Open toolURL Cleaner
Remove utm parameters, fbclid, gclid, and common email tracking parameters while preserving ordinary URL queries.
Open toolCSV Viewer & Formatter
Parse CSV or TSV with quoted commas, escaped quotes, and multiline fields, preview it as a table, and export normalized CSV locally.
Open toolColor Converter
Convert HEX, RGB, HSL, and alpha color values with a live preview, entirely in your browser.
Open toolContrast Checker
Calculate the WCAG 2.x contrast ratio for foreground and background colors and check AA and AAA text thresholds.
Open toolSafe QR Code Generator
Create static QR codes for URLs, text, Wi-Fi, email, and phone numbers. Review the exact content first, then save as PNG or SVG—no signup and no built-in expiry.
Open toolQR Code Reader
Read QR codes from uploaded images or a supported camera with local browser processing and no external decoding API.
Open toolRandom & handy
6 toolsSecure Password Generator
Generate a strong random password for free. Choose password length, uppercase, lowercase, numbers and symbols. Runs entirely in your browser.
Open toolRoulette & Random Picker
Enter names or options and pick one at random for free. Use this simple roulette for speaking order, chores, meals, destinations, and more. No sign-up required.
Open toolRandom Number Generator
Generate random integers within a range, with or without duplicates, using crypto.getRandomValues and rejection sampling.
Open toolDice Roller
Roll up to 100 dice using d4, d6, d8, d10, d12, d20, or d100, with individual rolls, totals, and history.
Open toolTeam Generator
Enter one participant per line and create balanced random teams by number of teams or members per team.
Open toolList Shuffler
Shuffle a list with crypto-based randomness while preserving every item and duplicate, then copy the full result.
Open toolPractical guides
Practical Rakuruno workflows for text cleanup, PDFs, QR codes and business-day counting, with examples and checks before you use the result.
Browse all six guides →