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Text & Regex

Clean, compare, count, transform, and test text, Unicode, slugs, regular expressions, and markdown content.

12 tools

Topic cluster

Text & Regex

Clean, compare, count, transform, and test text, Unicode, slugs, regular expressions, and markdown content.

Regex Tester

Test and evaluate regular expressions in real-time natively in your browser.

Regex Generator

Generate practical regex patterns for common validation and parsing tasks.

Unicode Inspector

Inspect Unicode code points locally, including UTF-16 units, UTF-8 bytes, invisible characters, combining marks, bidi controls, and non-ASCII text.

Text Diff Checker

Compare two pieces of text side-by-side. Highlights additions, deletions, and modifications instantly.

Supporting guides

url-encoding-explained-common-mistakes-and-solutions

base64-encoding-when-and-how-to-use-it

robots-txt-testing-checklist

Common tasks

Use this hub for text cleanup, regex validation, markdown review, Unicode inspection, and before-sharing text checks.

Clean copied text and normalize whitespace before it becomes documentation or a sample payload.
Test regex patterns against scrubbed examples, not production logs.
Compare before and after text so accidental content changes are visible.

Related workflows

Log scrub before sharing

Parse logs, remove secrets, and compare sanitized output before posting it to an issue or chat.

Open workflow

JSON to TypeScript contract review

Turn representative JSON into TypeScript, query edge fields, and compare contract changes before implementation.

Open workflow

Tutorials and checklists

JSON Schema validation checklist

Review schema coverage, required fields, and compatibility before implementation.

API auth header mistakes

Find authorization header mistakes before sharing request examples.

JSON vs JSON5 differences

Know which syntax belongs in strict JSON contracts and which does not.

Category FAQ

Can text tools be part of a security review?

Yes. They help normalize, diff, and inspect shared text, but they do not replace manual review.

When should I use regex tools in a workflow?

Use them after creating safe sample text so pattern tests do not expose private logs or tokens.

Markdown Preview

Live split-pane Markdown editor with GFM support.

Open

HTML to Markdown

Convert HTML snippets into clean Markdown instantly in your browser.

Open

Text Diff Checker

Compare two pieces of text side-by-side. Highlights additions, deletions, and modifications instantly.

Open

Multiple Whitespace Remover

Remove repeated spaces, tabs, and line breaks in one click.

Open

Letter Counter

Count characters, letters, words, and lines instantly.

Open

Bionic Reading Converter

Transform plain text into bionic-reading style output for faster scanning and focus.

Open

Regex Tester

Test and evaluate regular expressions in real-time natively in your browser.

Open

Regex Generator

Generate practical regex patterns for common validation and parsing tasks.

Open

Slugify & Case Converter

Convert text between slug, camelCase, PascalCase, snake_case, and more.

Open

Invisible Characters Detector

Detect and remove zero-width spaces, control characters, and confusable whitespace from text.

Open

Unicode Inspector

Inspect Unicode code points locally, including UTF-16 units, UTF-8 bytes, invisible characters, combining marks, bidi controls, and non-ASCII text.

Open

OAuth PKCE and JWKS Workbench

Generate PKCE verifier/challenge pairs and inspect or verify JWTs against pasted JWKS key sets locally.

Open