Extract Substring
Extract part of a string by start position and length.
FreeNo uploadNo sign-up
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How to use the Extract Substring
- Type or paste your input into the Input box, or upload a text file.
- Adjust the options under the tool. The result updates as you type.
- Copy the output or download it as a file.
Private by design
The Extract Substring runs entirely in your web browser. Nothing you enter or open here is uploaded to a server, so it is safe to use with private data and works even when your connection drops after the page has loaded.
Frequently asked questions
Is the Extract Substring free?
Yes. The Extract Substring on Codegres.org is completely free, with no sign-up, no limits and no watermark.
Is my string uploaded anywhere?
No. The Extract Substring runs entirely in your browser using JavaScript, so your string never leaves your device and is not stored or seen by anyone.
Does the Extract Substring work on my phone?
Yes. It works in any modern browser on Android, iPhone, Windows, Mac and Linux, with nothing to install.