CodeToolWorks Tools

Convert any color between HEX, RGB, and HSL instantly — paste one format and get the other two with a live preview swatch.

5 Q&A

Generate harmonious color palettes from any base color — complementary, analogous, triadic, and more — with click-to-copy HEX codes.

5 Q&A

Check any text/background color pair against WCAG contrast rules — get the exact ratio plus AA/AAA pass/fail for normal and large text.

5 Q&A

Convert RGBA colors to 8-digit HEX and back — control transparency with the alpha channel and copy production-ready codes.

4 Q&A

Pick any color and instantly get HEX, RGB, and HSL values with one-click copy and live preview swatch.

2 Q&A

Convert between Unix timestamps, human-readable dates, and ISO 8601 formats across any timezone.

Build, inspect, and translate 5-part POSIX cron expressions into human-readable plain English schedules.

Encode text into HTML entities and decode entities back to text. Handles named (©), decimal (©), and hex (©) entities.

5 Q&A

Apply the ROT13 letter rotation to any text. Encoding and decoding are the same operation — run it twice to get the original back.

5 Q&A

Convert hex to text and text to hex with full UTF-8 support. Validates input and explains errors in plain language.

5 Q&A

Turn any image into a base64 data URI for embedding in HTML or CSS. Files are read locally — never uploaded anywhere.

5 Q&A

Split any URL into protocol, host, port, path, query parameters, and fragment. Query params shown as a key/value table.

5 Q&A

Convert UTF-8 text to Base64 strings and decode Base64/Base64URL payloads securely client-side.

Encode and decode URI query parameters and full URLs to fix broken links and inspect percent encoding.

Generate QR codes from any text or URL instantly in your browser with downloadable PNG output.

2 Q&A

Format, minify, or validate JSON data instantly in your browser with zero data leakage.

Pretty-print, minify, and validate XML documents with clear, line-numbered error messages.

5 Q&A

Pretty-print messy HTML with clean indentation or minify it to a single line for production.

5 Q&A

Beautify stylesheets with clean 2-space indentation or minify them to one line for faster page loads.

5 Q&A

Uppercase SQL keywords and put major clauses on their own lines for readable queries.

5 Q&A

Validate YAML indentation and convert simple YAML documents to JSON with line-numbered errors.

5 Q&A

Lightweight JavaScript beautifier — newlines and 2-space brace indentation for minified code.

5 Q&A

Compress JSON to a single line and see exactly how many bytes you save.

5 Q&A

Convert HTML to plain text — tags removed, entities decoded, line breaks preserved.

5 Q&A

Generate version 4 UUIDs instantly. Create one or a batch of up to 100, then copy them all with a single click.

5 Q&A

Generate cryptographically secure random strings. Choose a length from 1–512 and a charset: alphanumeric, hex, or symbols.

5 Q&A

Generate classic lorem ipsum placeholder text by paragraphs, sentences, or words for mockups and wireframes, with one-click copy.

5 Q&A

Define a simple field list with types and row count to generate a deterministic sample JSON array for testing APIs and frontends.

5 Q&A

Pick your languages, OS, and editor to assemble a best-practice .gitignore from built-in templates — no more committing node_modules.

5 Q&A

Searchable reference of 40 common HTTP status codes with plain-English explanations.

5 Q&A

Look up MIME types by file extension and vice versa — a searchable table of 62 common content types.

5 Q&A

Reference of common character sets plus a live UTF-8 encoder — type text and see code points, bytes, and percent-encoding.

5 Q&A

Generate cryptographically secure random passwords with customizable length and character sets using Web Crypto API.

2 Q&A

Generate SHA-256, SHA-512, SHA-384, and SHA-1 cryptographic hashes via Web Crypto API with checksum matching.

Paste a JSON Web Token to decode its header and payload. Shows expiry and issued times in plain dates and flags expired or unsigned tokens.

5 Q&A

Test regular expressions live — type a pattern, toggle flags, and see every match highlighted with its index in your test string.

5 Q&A

Turn any headline into a clean URL slug — lowercased, accents stripped, with your choice of hyphen or underscore separators.

4 Q&A

Shrink SVG file size in one click — strips comments, metadata, and excess whitespace, then reports exactly how many bytes you saved.

5 Q&A