Tools

Convert single labels and complete domain names between Unicode and their ASCII Punycode form. Uses nontransitional Unicode UTS #46 processing and accepts one item per line.

The free tool runs in your browser without an account or installation.

Paste HTML or upload a file, then choose how much markup to keep. HTML Washer applies the selected cleanup preset to scripts, styling, comments, and other elements; CORRECT mode only normalizes the markup.

Copy or download the resulting HTML for the next step of your work. The online tool is free and requires no account.

Repair malformed HTML by closing open elements, correcting tag nesting, and formatting the result. Paste markup or upload an HTML file.

The corrector normalizes HTML; it does not sanitize untrusted content.

Create and edit HTML in linked visual and source panes. Use the formatting controls or write markup directly, then inspect the corresponding result in the other pane.

The editor runs in your browser without an account or installation.

Convert one or more lines of text to camelCase, PascalCase, snake_case, kebab-case, SCREAMING_SNAKE_CASE, upper case, or lower case.

Encode text as HTML entities or decode character references back to text. The encoder converts HTML syntax characters and non-ASCII characters; the decoder accepts named, decimal, and hexadecimal references.

Processing runs in your browser as you type.

Encode query values and path segments, or decode percent-encoded UTF-8 text. Processes the whole input as a component, including URL separators.

Useful for inspecting encoded values in API requests and redirect parameters. Free online tool.

Generate random version 4 UUIDs, defined in RFC 9562. Choose uppercase output, keep or remove hyphens, add braces, and generate up to 100 UUIDs in a batch.

Copy or download the results. Free online tool — no account required.

Encode text or file bytes with the standard Base64 alphabet defined by RFC 4648.

Decode Base64 into text when it is displayable, or download the decoded bytes as a file.

Encode pasted text or raw file bytes as hexadecimal (Base16). Text uses UTF-8; encoded output uses lowercase hex without separators.

Decode hex into text when it is displayable, or download the decoded bytes as a file. The free online tool requires no account.

Escape and unescape C/C++ string content using common backslash sequences, two-digit hex escapes (\xHH), and four-digit Unicode escapes (\uHHHH).

Useful for inspecting escaped text, file paths, or regex patterns. Free online tool.

Escape C# string content with classic backslash sequences or the verbatim option, which doubles quotes. Unescape common backslash sequences, four-digit Unicode escapes (\uHHHH), and supplementary character escapes (\UHHHHHHHH).

The verbatim option applies to escaping. Free online tool.

Escape backslashes, double quotes, and control characters in JSON string content using RFC 8259 escape syntax. Unescape those sequences and Unicode escapes (\uHHHH), including surrogate pairs.

Useful when constructing JSON strings by hand or inspecting escaped payloads. Free online tool.

Escape Rust string content with common backslash sequences and Unicode escapes (\u{...}), or generate a raw string literal with delimiters chosen for the input. Unescape backslash sequences, ASCII byte escapes (\xHH), and Unicode escapes.

The raw-string option applies to escaping. Free online tool.

Escape Python string content with common backslash sequences, hex escapes (\xHH), and Unicode escapes (\uHHHH and \UHHHHHHHH). The raw-string option escapes double quotes while leaving backslashes literal.

Unescape backslash, hex, and Unicode sequences. The raw-string option applies to escaping. Free online tool.

Escape JavaScript string content with common backslash sequences and Unicode escapes (\uHHHH and \u{...}). The template-literal option escapes backslashes, backticks, and interpolation openers.

Unescape backslash, hex, and Unicode sequences. The template-literal option applies to escaping. Free online tool.

Escape Java string content with common backslash sequences and Unicode escapes (\uHHHH), using surrogate pairs for supplementary characters. The text-block option escapes triple-quote sequences.

Unescape backslash and Unicode sequences. The text-block option applies to escaping; text blocks are final in Java 15. Free online tool.

Upload a Word document (.docx) to convert it to HTML. Mammoth converts the document, then the HTML Washer API normalizes and formats the markup in CORRECT mode.

Review and adapt the result for its intended destination. This conversion does not sanitize untrusted content. The online converter is free and requires no account.

Crawl main content with Trafilatura Core's heuristics to remove navigation and boilerplate. The TypeScript crawler uses Crawlee with Playwright for rendering or HTTP with Cheerio.

Choose plain text, Markdown, readable HTML, or Minified HTML for LLM workflows or article archives. Raw output is the crawler's HTML representation and can reflect rendering or preprocessing.

Use the npm CLI/library, maintained native Python library, or Apify Actor. The free playground previews one page without a login; generated commands or code can crawl multiple pages.