Disclaimer

General accuracy

These tools are built carefully and their behaviour is tested, but no software is error-free. Output is provided for your own evaluation. Where a result matters — a checksum you are verifying a download against, a converted file you are about to publish, a calculation feeding a financial decision — verify it independently before relying on it.

Security tools are not security advice

The hash generator, JWT decoder and Base64 tools are diagnostic utilities, not security products. Specifically:

• Decoding is not verification. The JWT decoder shows what a token claims. It does not check the signature, and a forged token decodes exactly as cleanly as a genuine one. Always verify signatures server-side with the issuer’s key.
• Base64 is not encryption. It is a reversible encoding with no key. Encoding a secret in Base64 provides no protection whatsoever.
• MD5 and SHA-1 are cryptographically broken. They remain useful for detecting accidental corruption, but must not be relied on where an adversary could construct a collision.

As a general matter, avoid pasting live production credentials into any online tool, including this one. Prefer expired or test values where you can.

File and image processing

Image conversion and compression are lossy in ways that depend on your browser’s own encoder, so results can differ slightly between browsers and versions. Compression discards detail permanently — always keep your original file. Converting to a format without an alpha channel, such as JPG, flattens transparency and cannot be undone by converting back.

Not professional advice

Nothing on this site constitutes legal, financial, tax, medical or other professional advice. Calculator tools implement general formulas and do not account for your circumstances, local regulations, or current rates. Consult a qualified professional before acting on anything a calculator here produces.

External links

Explanatory content may reference external specifications and documentation. Those resources are not under our control, and we do not warrant their accuracy or availability.

Limitation

To the extent permitted by law, the operator of Toolsel accepts no liability for loss or damage arising from reliance on any output of these tools. This sits alongside the terms of use, which govern your use of the site generally.