Prepare an image for your website
Choose dimensions from your layout, resize the original, then compare quality and file size before uploading.
Work through the sizing example YOUR EVERYDAY TOOL DRAWER
Small tools.
Less busywork.
99 useful little helpers for the things between the big things. Free, fast, and right here.
Find your tool99 tools, one handy placeZero accounts to create100% processed on your device
Start with the job you need to finish
Clean a copied list
Keep a backup, remove repeated lines without changing their order, then check capitalization before pasting back.
See a before-and-after exampleConvert a spreadsheet export
Keep IDs and postal codes intact. Learn how headers, quotation marks, and leading zeros behave in JSON.
Convert CSV with examplesWhat needs doing?
99 tools
01
Word counter
Count words, characters, and reading time.
Text
02
Case converter
Give your text a change of case.
Text
03
URL slug generator
Turn a title into a clean, readable URL.
Text
04
Duplicate line remover
Clean up lists without the repetition.
Text
05
Line sorter
Put a messy list in alphabetical order.
Text
06
JSON formatter
Make JSON readable. Catch syntax errors.
Developer
07
URL encoder & decoder
Encode a URL component or decode one.
Developer
08
Base64 converter
Encode and decode Unicode text.
Developer
09
CSV to JSON
Turn spreadsheet rows into JSON records.
Developer
10
Color converter
Find matching HEX, RGB, and HSL values.
Developer
11
Percentage calculator
Work out percentages without the guesswork.
Calculate
12
Aspect ratio calculator
Find the proportions of an image or screen.
Calculate
13
Days between dates
Measure the space between two dates.
Calculate
14
Unit converter
Convert length, weight, and temperature.
Calculate
15
Image resizer
Get your image to exactly the right size.
Image
16
Image compressor
Find a lighter size for your next upload.
Image
17
Image format converter
Switch between PNG, JPEG, and WebP.
Image
18
Image cropper
Keep the part of the picture you need.
Image
19
Password generator
Create a strong, random password locally.
Generate
20
UUID generator
Fresh version 4 identifiers, in a click.
Generate
21
Whitespace cleaner
Tidy spacing while keeping your line breaks.
Text
22
Text replacer
Replace literal text throughout a draft.
Text
23
Text reverser
Reverse the code points in text.
Text
24
Line numberer
Add a number to every line of a list.
Text
25
HTML escape
Encode or decode the five basic HTML characters.
Developer
26
JSON to CSV
Turn flat JSON records into a safe CSV file.
Developer
27
Query string parser
Read URL parameters, including repeated keys.
Developer
28
Number base converter
Convert large whole numbers between common bases.
Developer
29
Unix timestamp converter
Convert Unix seconds or milliseconds and ISO dates.
Developer
30
Data size converter
Convert bytes, decimal sizes, and binary sizes.
Calculate
31
Contrast checker
Check whether two colors meet WCAG contrast targets.
Developer
32
Fraction simplifier
Reduce an integer fraction to its simplest form.
Calculate
33
Average calculator
Find the average and spread of a number list.
Calculate
34
Random number generator
Generate unbiased random whole numbers in a range.
Generate
35
List shuffler
Put every item in a list into a random order.
Generate
36
Lorem ipsum generator
Create classic placeholder paragraphs for a layout.
Generate
37
Date offset calculator
Add or subtract calendar days from a date.
Calculate
38
Duration converter
Turn hours, minutes, and seconds into totals.
Calculate
39
Discount calculator
Calculate a sale price and the amount saved.
Calculate
40
Tip calculator
Split a bill with a tip among a group.
Calculate
NEW
Upside down text generator
Flip text upside down to copy and paste anywhere.
Text
NEW
Small text generator
Make tiny text: small caps, superscript, and subscript.
Text
NEW
Bold text generator
Bold, italic, and fancy fonts you can copy and paste.
Text
NEW
Strikethrough text generator
Cross out text for WhatsApp, Instagram, or anywhere.
Text
NEW
Morse code translator
Translate text to Morse code and back.
Text
NEW
Binary translator
Convert text to binary code and binary to text.
Text
NEW
Remove line breaks
Join broken lines from PDFs and emails into clean text.
Text
NEW
Add prefix and suffix to lines
Add text to the start or end of every line.
Text
NEW
Word frequency counter
Find the most used words in any text.
Text
NEW
Character counter
Count characters with and without spaces against a limit.
Text
NEW
Random word generator
Get random words for games, drawing, and writing prompts.
Generate
NEW
Random letter generator
Pick random letters, vowels, or consonants.
Generate
NEW
Random name picker
Pick one or more random winners from a list of names.
Generate
NEW
Random team generator
Split a list of people into fair random teams.
Generate
NEW
Random color generator
Generate random HEX and RGB colors.
Generate
NEW
Number to words converter
Write numbers in words, including rupees and cheques.
Calculate
NEW
Roman numeral converter
Convert numbers to Roman numerals and back.
Calculate
NEW
MD5 hash generator
Create the MD5 hash of any text.
Developer
NEW
SHA-256 hash generator
Generate SHA-256, SHA-1, SHA-384, or SHA-512 hashes.
Developer
NEW
JWT decoder
Decode a JSON Web Token header and payload.
Developer
NEW
Regex tester
Test a JavaScript regular expression and see every match.
Developer
NEW
Text compare (diff checker)
Compare two texts and see which lines changed.
Developer
NEW
Password strength checker
Estimate how hard a password is to crack.
Developer
NEW
Age calculator
Calculate exact age in years, months, and days.
Calculate
NEW
BMI calculator
Calculate body mass index in kg/cm or lb/in.
Calculate
NEW
GPA calculator
Calculate GPA or CGPA from grades and credits.
Calculate
NEW
Percentage change calculator
Find the percentage increase or decrease between two numbers.
Calculate
NEW
Compound interest calculator
See how savings grow with compound interest and deposits.
Calculate
NEW
Loan EMI calculator
Monthly payment and total interest for a loan.
Calculate
NEW
GST calculator
Add or remove GST and split CGST and SGST.
Calculate
NEW
Hours calculator
Hours and minutes between two times, minus breaks.
Calculate
NEW
Day of the week calculator
Find the weekday for any date, past or future.
Calculate
NEW
Week number calculator
What week number is it? ISO and US week numbers.
Calculate
NEW
Military time converter
Convert 24-hour military time to 12-hour AM/PM and back.
Calculate
NEW
Height converter (cm to feet and inches)
Convert height between centimetres and feet and inches.
Calculate
NEW
Mouse double click test
Check if your mouse double clicks when you click once.
Test
NEW
Mouse scroll test
Test your scroll wheel for skipping and jumping.
Test
NEW
Mouse button tester
Test left, right, middle, and side mouse buttons.
Test
NEW
CPS test (clicks per second)
Measure your clicks per second in 1, 5, or 10 seconds.
Test
NEW
Spacebar counter
How many times can you press space in 10 seconds?
Test
NEW
Keyboard tester
Test every key on your keyboard in the browser.
Test
NEW
Reaction time test
Test your reaction speed in milliseconds.
Test
NEW
Typing speed test
Check your typing speed in words per minute.
Test
NEW
Dead pixel test
Find dead or stuck pixels with full screen colors.
Test
NEW
White screen
A full screen of pure white for light, cleaning, or testing.
Test
NEW
Black screen
A full screen of pure black, for OLED, focus, or testing.
Test
NEW
What is my screen resolution?
See your screen size, resolution, and browser viewport.
Test
NEW
Online stopwatch
A simple stopwatch with laps, right in your browser.
Time
NEW
Countdown timer
Set a timer for any time with an alarm sound.
Time
NEW
Pomodoro timer
Focus in 25-minute sessions with short breaks.
Time
NEW
Online metronome
A precise metronome with tempo, time signature, and tap tempo.
Time
NEW
Tone generator
Play a pure tone at any frequency from 20 Hz to 20 kHz.
Test
NEW
Flip a coin
Heads or tails? Flip a fair virtual coin.
Generate
NEW
Dice roller
Roll one or more dice: d4, d6, d8, d10, d12, or d20.
Generate
NEW
Wheel spinner
Spin a wheel of names to pick a random winner.
Generate
NEW
Yes or no wheel
Spin a wheel to decide yes or no.
Generate
NEW
Magic 8-ball
Ask a yes or no question and shake for an answer.
Generate
NEW
Mic test
Check your microphone is working and hear yourself.
Test
NEW
Tally counter
An online click counter for counting anything.
Calculate
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