Encoding Tools
Encode, decode, hash, and convert strings between formats.
Most Loved
All Encoding Tools
Guides & How-Tos
Understand Base64 encoding and decoding, how it works, when to use it, and common pitfalls for web developers.
Learn what UUIDs are, the different versions (v1, v4, v7), and when to use them in databases, APIs, and distributed systems.
Learn how URL encoding works, why special characters must be percent-encoded, and how to encode/decode URLs correctly.
Learn how to create strong passwords, understand entropy, hashing algorithms, and best practices for password security.
Learn how JWTs work, structure, algorithms, claims, signing, and security best practices for authentication and APIs.
Understand cryptographic hash functions. MD5, SHA-256, HMAC, and when to use each for integrity, passwords, and signatures.
Learn about character encoding. ASCII, UTF-8, HTML entities, hex encoding, and Base32 for web developers.
Learn about Base64 data URIs, SVG optimization, image formats, and best practices for embedding images in web apps.
Learn binary, hexadecimal, octal, and ROT13 encoding, how computers represent data at the lowest level.
Quick Answers
What are encoding tools?
Encode, decode, hash, and convert strings between formats.
How many encoding tools do you have?
We've got 10 free encoding tools including Base64 Encoder / Decoder, Hash Generator, Base32 Encoder / Decoder, and more. All free to use!
What are the most popular encoding tools?
The most popular tools in this category are Base64 Encoder / Decoder, Hash Generator.
Do I need to make an account?
Nope! Everything on BuildUtilities is free and works without signing up.