Escape Character Converter
Escape or unescape strings per language context.
Escape Character Converter
All processing happens locallyWhat this tool does
Escape Character Converter is a string escaper that understands several language contexts, implements the standard table both ways and locates invalid bytes instead of silently dropping them.
Escaping rules differ a lot: JSON only escapes inside double quotes and forbids raw newlines, HTML cares about & < > and quotes, SQL doubles single quotes, and CSV wraps in quotes while doubling inner ones. Choosing the wrong context yields plausible but broken output, so all six sit side by side.
How to use it
- Paste or type your content into the input field at the top, or press the sample button to load demo data.
- Adjust the options below the input, such as output format, separators, letter case or precision.
- Press the main button to run the conversion. Results appear instantly in the output panel without a page reload.
- When the result looks right, use the copy button in the corner, or download it as a local file.
Tips and notes
Clean up stray spaces and line breaks before pasting for more accurate results.
FAQ
HTML escaping makes text safe to display (so it is not parsed as a tag) using entities like &; URL encoding makes data safe inside a URL using percent sequences like %E4%B8%AD.
Only for string literals. Dynamically concatenated SQL has other risks such as comment truncation — use parameter binding in real code.
JSON allows raw Unicode as well as \uXXXX. In JSON context this tool escapes non-ASCII characters so the output can be embedded in ASCII-only systems.
The bytes are invalid in the chosen encoding — usually the wrong codec.
Yes. The tool is completely free with no usage limits, and you never need an account or a sign-in.
No. All processing runs locally in your browser, so the input never reaches a server and is never logged or stored.
Yes. The layout is mobile-first, so inputs and buttons stay comfortable on phones and tablets in both orientations.
Yes. A copy button in the output panel puts the result on your clipboard, and you can also download it as a text file.