String Utility Belt
Build your own text transformation pipelines. Free and open source.
FreeCLIOpen SourceHelpers2,983 impressions#4 of its week3 comments
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>log in to commentHey @StackShortlist, absolutely! You can save it into your library and reference it any time later. Since it browser only and no accounts, this will be single computer only. However if you want multiple computers/browsers you can export your library to json and reimport. You can also save it to the browser extension and use it anywhere in the right click context menu, or you can save it as a link. What is your usual workflow? Happy to help setup if needed!
- StackShortlist· 17d ago
Chaining text transforms into a pipeline is handy for cleaning up messy CSV exports. Can I save a pipeline and reuse it later?
We built String Utility Belt to give anyone a quick, offline way to transform text – 246 free tools like Base64, URL, JSON, SHA‑256 and more run entirely in the browser, so nothing you paste ever leaves your computer. It lets you chain steps, use presets, and see results instantly. Let us know what you think!
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- Free toolbox with 240+ string transforms
- Runs in browser, VS Code, CLI and AI‑agent MCP server
- Encode, hash, cipher, format, generate and more
- Searchable utility list with pipelines
- Open‑source, MIT‑licensed extension
- Browser‑based toolbox with live playground for each utility.
- VS Code extension integrates the same engine directly in the editor.
- Command‑line tool (subelt) and MCP server for AI agents.
- Presets automate common tasks like cleaning Word‑pasted text.
String Utility Belt offers 246 free in-browser string and text tools with pipeline building, plus CLI, MCP and NPM access.
- for
- Developers and power users who need quick text transformations without uploading data.
- pricing
- free
- license
- MIT
- cli-v1.5.1subelt CLI 1.5.122 days ago
- app-v1.13.0Web app 1.13.022 days ago
- vscode-v1.5.1VS Code extension 1.5.123 days ago
Key features
- In-browser processing — All operations run locally in the browser, ensuring no data is uploaded.
- Pipeline builder — Create multi-step workflows with splits, loops, and reusable steps.
- Extensive toolset — Includes encoding, decoding, hashing, formatting, conversion and more (246 utilities).
- Presets library — Ready-made pipelines for common tasks like SAML decoding or CSV conversion.
- CLI & NPM package — Run the same utilities from the command line or as an npm module.
- Browser extension — Reuse pipelines on any site with two clicks via the extension.
Use cases
- Decode and pretty-print SAML requests directly in the browser
- Convert nested JSON API responses to CSV for quick analysis
- Generate random passwords or UUIDs without leaving the editor
String Utility Belt FAQ
Does any data leave my computer?+
No. All processing happens locally in the browser, so pasted text is never uploaded.
Can I reuse a pipeline on other websites?+
Yes, the browser extension lets you apply saved pipelines to any site with two clicks.
Is there a command-line version?+
Yes, the tool is available as a CLI, an MCP, and an npm package for scriptable use.
How many utilities are included?+
The platform provides 246 individual string and text utilities covering encoding, decoding, hashing, formatting, conversion and more.
Summarized by DevHunt from stringutilitybelt.com · Oct 10, 2026. Details may change; check the official site.
