Two questions come up before anyone commits to a RSA Key Generator: is it safe to paste real work into, and is the free version enough or do you need to pay? This guide answers both directly, without marketing language.
Is It Safe to Use?
Safety comes down to what happens to your input. Before you paste anything real, open the privacy information and look for three answers: is input stored, is it used to improve the service, and for how long. Anything you cannot find documented should be treated as unknown. The practical rule: paste material you would be comfortable seeing in a support ticket, and keep the rest out.
What You Should Never Paste
- Passwords, API keys, tokens or any credential, even test ones.
- Personal data about other people - addresses, health or financial details.
- Unreleased documents covered by confidentiality obligations.
- Client data your own agreements forbid you from sharing with third parties.
- Anything you would not want indexed, logged or quoted back at you.
What the Free Version Covers
Unlimited key pairs, PEM output, 2048 and 4096 bit sizes and no sign-up.
For occasional and weekly use this is genuinely enough - most people never need more.
What Paid Plans Add
This tool is free.
These matter when the tool is part of daily production rather than an occasional helper.
Free vs Paid: How to Decide
- Use the free version on real work for seven days, not test prompts.
- Note every moment you wished for a paid feature.
- Price the paid plan against the hours it would actually save.
- If the wish list stays short, stay free; if it grows weekly, upgrade for a month and re-check.
A 60-Second Safety Checklist
- No credentials or personal data in the input.
- Privacy terms read for storage, training and retention.
- Output reviewed for facts before anything customer-facing ships.
- Free tier tested against your real weekly volume.
Frequently Asked Questions
What key size should I choose?
2048 bits is a practical default today, with 3072 or 4096 reserved for keys expected to protect data for many years.
Is the private key ever sent anywhere?
Generation happens locally in the browser, so the private key never needs to leave your machine - keep it that way.
What are the modulus and exponents?
They are the numeric parts of an RSA key: the modulus plus a public exponent for encryption or verify, and a private exponent for decrypt or sign.
Can I reuse this key pair in production?
Yes if generated at a strong size and stored securely, but never share the private half and rotate it on a schedule.
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