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CSS Selectors Cheat Sheet
A CSS selectors cheat sheet: classes, IDs, combinators, attribute selectors, and pseudo-classes, with examples. Free CSS tools.
How to Convert Hex to Binary (and Back)
Convert hexadecimal to binary and back for free in your browser. Simple step by step guide with the four bit rule explained.
Base64 Cheat Sheet: Alphabet and How It Works
A Base64 cheat sheet: the 64 character alphabet, padding, how encoding works, and the URL safe variant. Free encoder and decoder.
How to Remove EXIF Data (Metadata) From a Photo
Remove hidden EXIF metadata and GPS location from a photo for free in your browser, with nothing uploaded. Step by step.
Best Free ASCII Tools
The best free online ASCII tools to convert characters to codes, switch encodings, and make Morse or an ASCII table in your browser. Free, no sign-up.
Best Free Health and Fitness Calculators
The best free online health and fitness calculators for BMI, calories, BMR, body fat, and ideal weight, in your browser. Free, no sign-up.
How to Compress an Image Without Losing Quality
Compress an image for free in your browser to shrink the file while keeping it sharp, with nothing uploaded. Step by step.
Best Free WebP Tools
The best free online WebP tools to convert to and from WebP, compress, edit, and handle transparency in your browser. Free, no sign-up.
Chmod Cheat Sheet: Unix File Permissions
A chmod cheat sheet for Unix file permissions: the number system, common values like 644 and 755, and symbolic notation. Free calculator.
How to Merge PDF Files (Free, No Upload)
Merge several PDFs into one for free in your browser, with nothing uploaded. Simple step by step guide.
Best Free Random Generators
The best free online random generators for passwords, UUIDs, numbers, and test data, in your browser. Free, no sign-up, nothing uploaded.