Does this tool modify code blocks?

No, if the preserve code option is enabled, fenced code blocks and inline code remain completely untouched.

Which languages are supported for smart quotes?

It supports English, Chinese, Japanese, Spanish, French, German, Russian, and Portuguese, applying the correct local quotation marks for each.

What is the difference between en-dashes and em-dashes here?

Double hyphens (--) convert to en-dashes (–) or em-dashes (—) depending on context, and triple hyphens (---) convert to em-dashes.

Does the tool run online or offline?

It runs fully offline and deterministically in your browser, ensuring your text data remains private.

Can I choose to only fix quotes and ignore dashes?

Yes, you can set the conversions option to 'Quotes only' to bypass dash and ellipsis transformations.

Elysia Tools

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Text Processing

Em-dash & Typographic Purifier

Convert AI-typical plain ASCII into proper typography: -- and --- become en/em dashes, straight quotes become curly/smart quotes (locale-aware), ... becomes a single ellipsis …, spaced dashes are tightened, and repeated spaces collapse — while fenced ``` code blocks and `inline` code are left untouched.

Details

What this tool helps you do

Paste any text and the purifier fixes the typography that AI-generated and hastily-typed prose gets wrong:

Dashes — --- becomes an em dash (—), -- becomes an en dash (–), and number ranges like 1990-1992 become 1990–1992. Spaced — is tightened so the dash hugs the words.
Smart quotes — straight " " and ' ' become curly, locale-aware guillemets/quotes. Apostrophes in contractions are handled.
Ellipsis — ... and . . . collapse into a single ellipsis character (…).
Whitespace — runs of spaces/tabs collapse to one (newlines preserved).
Code-safe — fenced code blocks and inline code spans are detected and never modified.

Runs fully offline and deterministically.

Execution

Run this tool

Fill in the form, run the tool, and review the result in one place.

Prepared example runs

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2 examples

Purify a paragraph of AI-style prose

A typical AI-written sentence with -- dashes, "straight quotes", and ... ellipses, converted to clean typography.

<div>The API—which we launched in 2020—was “revolutionary” according to users… It’s fast, reliable, and “just works”.</div>

French locale adds thin spaces inside guillemets

French « » guillemets get narrow no-break spaces inserted after « and before ».

<div>Il a dit « bonjour »—puis il est parti… C’est la vie.</div>

Inputs

Set the required fields, then run the tool.

6 options

ContentPaste or type the main input values.1

Text to purifytextareaRequired

SettingsAdjust formats, ranges, numbers, and modes.2

LocaleselectOptionalConversionsselectOptional

TogglesEnable or disable optional behavior.3

Fix spaced dashes ( — )checkboxOptionalEnabled when checkedMultiple spaces to singlecheckboxOptionalEnabled when checkedPreserve code blocks ``` and `inline`checkboxOptionalEnabled when checked

Result

Ready for a run

Run the tool to preview files, text, structured data, or streamed output here.

Samples

Em-dash & Typographic Purifier

What this tool helps you do

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Prepared example runs

Inputs

Result

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Key facts

Overview

When to use

How it works

Use cases

Examples

1. Polishing AI-Generated English Copy

2. Formatting French Localization Strings

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