HTML Entities vs. Extracting Plain Text
Choose between escaping literal characters, decoding references, and removing markup for readable text.
Guides to working with text
Practical guides to reversing text, Unicode characters, cleanup, counting and common encodings. Each guide explains a real task, shows an example and links to a tool you can try.
Extract Text With a Constrained Regular Expression
Build a small regex for repeated patterns and understand the site’s limits and match output.
Encode a URL Component Without Breaking the URL
Use percent encoding for a query value, understand reserved characters, and handle decode errors.
Remove Extra Spaces Without Losing Paragraphs
Clean repeated spaces and tabs line by line while preserving existing line breaks.
Base64 Is an Encoding, Not Encryption
Understand the UTF-8-to-Base64 process, round trips, decoding errors, and why it provides no secrecy.
Caesar Shifts and ROT13 for Text Puzzles
Apply a fixed shift to Latin letters, reverse it, and understand why the cipher is not secure.
Morse Code for Short Text Messages
Encode and decode supported letters, digits, and selected punctuation as written Morse sequences.
Compare Two Lists by Complete Lines
Find entries unique to either list and entries shared by both, while understanding exact matching and duplicates.
Reverse Text vs. Reverse Words: Which Order Changes?
Compare the homepage’s UTF-16 reverse tab with the separate word-order tool, including punctuation, spacing, and multiline behavior.
How Horizontal Mirrored Text Works
Learn how the horizontal mirror tool reverses grapheme order and substitutes lookalike Unicode glyphs.
Create Readable URL Slugs From Titles
Convert a heading into a lowercase ASCII slug and plan for collisions and published redirects.
Text to Binary and Hex: Inspect UTF-8 Bytes
Compare binary and hexadecimal views of the same UTF-8 bytes and decode only complete valid sequences.