AI Response Formatter

It normalizes the presentation formatting in raw AI responses — fixing missing or extra spaces after heading markers (#), list markers (-, *, +, 1.), and blockquote markers (>); collapsing runs of blank lines into one; and removing trailing spaces per line when enabled. All response wording, order, code, citations, URLs, warnings, and refusals are preserved exactly. The tool does not rewrite, summarise, add, or remove any content.

No. The tool formats presentation only — spacing, markers, and line endings. It does not evaluate factuality, reasoning, usefulness, or completeness. Labels such as "Formatted output," "Code preserved," and "No semantic changes applied" describe the formatting operation, not the response quality.

Yes. All fenced code blocks (``` or ~~~, any length, with any language label) are detected and extracted before any formatting rules run. Their delimiters, language labels, and internal content are restored verbatim after formatting. Inline code spans (backtick-wrapped) are also protected from rule application.

Yes. The formatter only touches spacing around heading, list, and blockquote markers. URLs, links, citations, footnote markers, warning text, refusal language, disclaimer text, and attribution lines are not touched. If a rule cannot be applied confidently, the line is left unchanged.

Markdown mode (the default) applies formatting rules and outputs valid Markdown: heading markers, list markers, blockquote markers, emphasis, links, and code fences are all preserved. Plain text mode additionally strips all Markdown decoration — headings become plain lines, list markers are removed, emphasis is removed — while keeping code block content, URLs, and citations as readable text. Both modes preserve all response wording and order.

The available rules are: (1) heading spacing — adds a single space after ATX # markers and strips closing # sequences; (2) unordered list markers — normalizes space after -, *, and + markers while preserving nested indentation; (3) ordered list markers — normalizes space after N. markers; (4) blockquote spacing — adds a single space after > markers; (5) paragraph spacing — collapses runs of two or more blank lines into a single blank line; (6) trailing spaces — removes spaces and tabs at the end of each line. Each rule is independently toggleable.

No. Response formatting runs entirely in your browser using vanilla JavaScript. No text, no metadata, and no formatting results are uploaded to any server or model. You can verify this by opening browser DevTools and watching the Network tab — no outbound requests are made while you type or format.

No. All formatting is deterministic rule-based processing in JavaScript. There is no LLM, no API, no OpenAI, no Anthropic, no Google, and no remote service involved. The formatting is predictable and repeatable — the same input with the same options always produces the same output.

Nothing is stored. The tool uses no localStorage, no sessionStorage, no IndexedDB, no cookies, no analytics, and no telemetry. Session history exists only in browser memory and is discarded when the tab is closed or refreshed.

Yes. The tool accepts responses up to 300,000 characters. For responses longer than that, a message is shown asking you to trim the input. This limit exists to keep the browser responsive; it exceeds the context window of all major models in common use today.

The Diff tab shows a line-by-line comparison of the input and the formatted output. Lines that changed are shown with a red minus (removed version) and a green plus (added version). Unchanged lines are shown in grey. The diff is capped at 200 lines for readability.

AI Output Cleaner strips conversational openers and closers ("Sure! Here's...", "Hope this helps!") — it removes content. AI Response Formatter normalizes spacing and markers only — it never removes any content. They are complementary: you can clean first then format, or format first then clean, depending on your goal.

AI Markdown Cleaner converts Markdown-heavy output to plain text by removing all heading markers, emphasis, links, and list markers. AI Response Formatter's plain-text mode does the same thing as a secondary option, but its primary purpose is to normalize Markdown for consistent rendering — not to strip it.

Markdown Formatter is designed for Markdown documents (documentation, README files, blog posts). AI Response Formatter is designed for AI response text, which often includes conversational prose, refusal language, mixed fenced-code and prose, and citation styles not found in authored Markdown documents. The options and samples are tailored for AI output.

Yes. Select Plain text mode in the output options, then click Format response. The output textarea will contain the response with all Markdown markers removed but all content preserved. Copy it directly, or use the Download button to save it as a .txt file.

It means the formatting operation did not change any words, sentences, facts, claims, citations, code, or response structure — only spacing and presentation markers. This label is shown in the output pane header as a persistent reminder.

Yes. Click Open file in the toolbar and select a .txt, .md, or .markdown file. The file is read by the browser's FileReader API entirely in memory. No data is sent anywhere.

The formatter does not convert setext headings to ATX by default, because many AI responses use --- as a horizontal rule rather than a heading underline and the two are visually similar. The heading spacing rule only applies to ATX headings starting with #. If you want setext headings normalized, use the Markdown Formatter tool which has a dedicated setext-to-ATX option.

The formatter treats all input as plain text or Markdown — it does not parse or execute HTML. Any HTML tags, script tags, or other markup in the pasted response are treated as literal text characters. They are not rendered in the output textarea and cannot execute.

Yes. Use the Swap button to exchange the formatted output back into the input field, which lets you compare or re-edit. Session history at the bottom of the page stores up to 8 past operations; click Restore on any entry to reload that input and output pair.

Yes. Press Ctrl+Enter (or Cmd+Enter on Mac) while focused on the input textarea to run the formatting immediately without clicking the Format response button. You can also enable Live mode in the options bar to format automatically as you type, with a 350ms debounce.

Yes. Once the page has loaded, all formatting happens in the browser with no network dependency. You can use it without internet access after the initial page load.