Prompt Trimmer & Redactor

Strip boilerplate, collapse whitespace, and redact secrets plus PII (SSN, cards, phones, emails, names) before pasting into LLMs.

AI & Prompts

Privacy: 100% Client-Side. Your data never leaves this browser tab. Processing uses Web APIs and client-side libraries only.

100% client-side. Strip boilerplate and redact secrets plus PII (SSN, cards, phones, emails, names, and more) before pasting into public LLM UIs. Token counts use cl100k_base (approximate).

Strip excessive whitespace & newlinesSanitize secret keys & bearer tokensRedact PII (SSN, cards, phones, emails, names…)Remove conversational boilerplateStrip markdown noise

Original tokens

197

Trimmed tokens

152

Saved

45 (22.8%)

Secrets: 2Emails: 2SSNs: 1Cards: 2Phones: 3Names: 2DOB: 1Addresses: 1

Original

Trimmed / redacted

review the following. in advance!

Name: [REDACTED_NAME]
Email: [REDACTED_EMAIL]
Phone: [REDACTED_PHONE]
Mobile: [REDACTED_PHONE]
SSN: [REDACTED_SSN]
DOB: [REDACTED_DOB]
Address: [REDACTED_ADDRESS]
Card: [REDACTED_CARD]
CVV: [REDACTED]

Authorization: Bearer [REDACTED]
api_key=[REDACTED]

My name is [REDACTED_NAME] would like you to summarize this document.

Contact me at [REDACTED_EMAIL] or [REDACTED_PHONE].

# Notes

Hello world.

!

What is Prompt Trimmer & Redactor?

Prompt Trimmer & Redactor is part of the stbox.dev developer sandbox. Strip boilerplate, collapse whitespace, and redact secrets plus PII (SSN, cards, phones, emails, names) before pasting into LLMs.

It sits in the AI & Prompts category and is designed for day-to-day debugging, demos, and learning — without forcing you to paste secrets into opaque third-party SaaS forms whenever client-side execution is enough.

How to use this tool

Open Prompt Trimmer & Redactor at https://stbox.dev/prompt-trim and review the privacy badge for runtime expectations.
Paste or configure your input in the tool interface (tokens, URLs, files, or text depending on the utility).
Copy results locally, or chain them into related stbox tools such as JWT, OAuth, or the REST client.

Frequently asked questions

Is my data sent to a server?

Prompt Trimmer & Redactor runs 100% in your browser. Inputs stay on your device and are not logged or stored by stbox servers.

Is stbox free to use?

Yes. Tools are provided as-is for testing and debugging with no account required for core utilities.

Can I use this for production secrets?

Prefer dedicated KMS/HSM workflows for production key material. stbox is optimized for local debugging and education.