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P
Merge PDF
PDF
P
Compress PDF
PDF
C
Image Compressor
Image
C
Image Converter
Image
G
Instagram Grid
Image
B
BMI Calculator
Calculators
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P
PDF
10 tools
I
Image
12 tools
C
Calculators
12 tools
D
Date/Time
6 tools
U
Unit Convert
12 tools
C
Colors
3 tools
T
Text
9 tools
D
Developer
6 tools
F
Fun
6 tools
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All tools
- Merge PDF Combine PDFs and images into one file, in any order
- Split PDF Split into separate pages (ZIP)
- Rotate PDF Rotate all pages by 90/180/270°
- Delete PDF Pages Remove the pages you specify
- Extract PDF Pages Keep only the selected pages
- PDF Page Numbers Add page numbers automatically
- PDF Watermark Stamp a text watermark on every page
- PDF to JPG Export each page as a JPG image (ZIP)
- Image to PDF Turn multiple images into one PDF
- Compress PDF Shrink file size by re-encoding images
Image
- Image Compressor Reduce JPG size by adjusting quality
- Image Resizer Resize with ratio lock & social presets
- Image Converter Convert 20+ formats: PNG, JPG, WebP, GIF, BMP, TIFF, ICO, HEIC, PSD & more
- Image Cropper Drag to select an area, or crop by coordinates/ratio
- Rotate & Flip Rotate 90/180°, flip horizontally or vertically
- Watermark Add a text or logo (image) watermark
- Pixelate / Mosaic Pixelate the whole image or a selected area
- Instagram Grid Split a square image into an N×N grid
- Color Extractor Extract a color palette (HEX) from an image
- Favicon Generator Make favicons (16·32·48·180) from an image
- Image Merger Join images horizontally or vertically
- EXIF Remover Strip location & metadata from photos
Calculators
- BMI Calculator Body mass index from height & weight
- Age Calculator Exact age from date of birth
- Compound Interest Principal, rate & term to final amount
- Discount Calculator Discount rate & amount from prices
- Bill Splitter Split a total among people
- Tip Calculator Tip and total by percentage
- 1RM Calculator Estimate one-rep max from weight & reps
- BMR Calculator Basal metabolic rate from height, weight, age
- Loan Calculator Monthly payment & total interest
- Savings Interest Deposit/installment maturity interest
- VAT Calculator 10% VAT (supply price ↔ total)
- Weekly Holiday Pay Korean weekly holiday allowance
Date/Time
- D-Day Counter Days left until a target date
- Days Between Dates Number of days between two dates
- Day of the Week Find the weekday of a date
- Sleep Calculator Bed/wake time by 90-min cycles
- Ovulation Calculator Predict ovulation & fertile window
- Pregnancy Weeks Pregnancy weeks & due date from LMP
Unit Convert
- Length Converter mm·cm·m·km·inch·ft·mile
- Weight Converter g·kg·t·oz·lb
- Data Size Converter B·KB·MB·GB·TB (base 1024)
- Temperature Converter Celsius · Fahrenheit · Kelvin
- Base Converter Binary · Octal · Decimal · Hex
- Pyeong Converter Pyeong ↔ square meters
- Speed Converter m/s, km/h, mph, knot, ft/s
- Area Converter m², km², ha, pyeong, ft², acre
- Time Converter seconds, minutes, hours, days, weeks, years
- Pressure Converter Pa, hPa, bar, atm, psi, mmHg
- Angle Converter degrees, radians, gradians, turns
- Frequency Converter Hz, kHz, MHz, GHz, rpm
Colors
- Color Code Converter Convert HEX · RGB · HSL
- Contrast Checker WCAG contrast ratio & pass/fail
- CSS Gradient Generate CSS gradient code
Text
- Character Counter Count characters, words, lines
- Manuscript Sheets Count 200-char manuscript sheets
- Reading Time Estimated time to read a text
- Case Converter UPPER · lower · Title case
- Number to Korean Amount to Korean words (for contracts)
- Whitespace Cleaner Collapse spaces, blank lines, trim
- Remove Duplicate Lines Dedupe, sort or reverse lines
- Reverse Text Reverse characters, words or lines
- Slug Generator Turn a title into a URL slug
Developer
- Base64 Encode/Decode Text ↔ Base64 (Unicode-safe)
- UUID Generator Generate standard UUID v4
- URL Encoder Encode / decode URLs & query strings
- Timestamp Converter Unix timestamp ↔ date & time
- Hash Generator SHA-1, SHA-256, SHA-512 of text
- JSON Formatter Prettify, minify & validate JSON
Fun
- Coin Flip Flip coins, show statistics
- Dice Roller Roll dice (e.g. 2d6)
- Ladder Game Randomly pair people with outcomes
- Roulette Pick one option at random
- Random Number Pick random numbers (optional no-repeats)
- Rock Paper Scissors Play rock-paper-scissors vs the computer