Why Text Encoding Changes a SHA-256 Hash
The same-looking text can give a different SHA-256 hash when its encoding changes. Learn why UTF-8, normalization, and invisible characters matter.
How-To Guides
Clear, tested steps for the technology jobs that come up again and again, written so you can follow along without prior knowledge.
How to URL-Encode Spaces and Special Characters
Learn to URL-encode spaces, ampersands, question marks and non-ASCII characters with percent-encoding, plus a free tool and worked examples.
How to Remove Empty Lines From a Document or List
Learn how to remove blank lines from text safely — delete every empty line or collapse runs to one, without losing paragraph breaks or spacing that…
Robots.txt Disallow Examples and Common Mistakes
Practical robots.txt Disallow examples for folders, pages, and file types — plus the mistakes that can hide your whole site from search results.
SHA-256 vs SHA-512: Output Length and Use Cases
SHA-256 gives a 64-character digest and SHA-512 gives 128. See both outputs for the same input and learn which one fits your job.
How to Encode Unicode Text as Base64 Without Garbled Characters
Learn why Unicode text turns garbled in Base64 and how UTF-8 encoding fixes it, with worked multilingual examples you can try in FBSubNet's free tool.
How to Convert ALL CAPS Text Into Sentence Case
Turn shouting ALL CAPS paragraphs into clean, readable sentences, and fix the names, acronyms and abbreviations a converter cannot know.
How to Change an Existing Article URL Safely
Learn how to change an existing article URL safely: map the old address, set a 301 redirect, update internal links, and verify nothing breaks.
SHA-256 Hashing vs Encryption: What Is Reversible?
SHA-256 hashing fingerprints data irreversibly; encryption scrambles it for later recovery. Learn the difference and when to use each.
Base64 Encoding vs Encryption: The Difference Explained
Base64 looks like encryption, but it is not. Learn how Base64 encoding works, why anyone can decode it, and when to use real encryption instead.
Word Count vs Character Count: What Each One Measures
Word count and character count measure different things. Learn what each one counts, where each matters, and how to check your text before you submit.