# SSL Checker

> Check any domain's SSL certificate — issuer, validity dates, chain and expiry. Free, instant, and no sign-up required.

- URL: https://farvixo.com/tools/security/ssl-checker
- Category: Security Tools (https://farvixo.com/tools/security)
- Price: Free
- Last reviewed: 7 August 2026
- Publisher: Farvixo Technologies

## What is SSL Checker?

SSL Checker is a free security utility from Farvixo that lets you check SSL certificate details of any domain. The value is processed locally in your browser and nothing is transmitted, stored or logged — which is the only acceptable design for a tool handling sensitive input. Free and unlimited.

## Specifications

| Property | Value |
| --- | --- |
| Tool | SSL Checker — Security Tools |
| Purpose | Check SSL certificate details of any domain |
| Input | Text or values you enter directly |
| Output | A hash, checksum or analysis result you can copy |
| Processing | In your browser — files are never uploaded to a server |
| Price | Free, unlimited, no account required |
| Limitations | Bounded by your device's memory and CPU rather than a server quota |

## How to use SSL Checker

1. **Enter what you want to check** — Enter the value you want to check or generate in SSL Checker.
2. **Run the check** — SSL Checker performs the analysis and explains the result in plain language rather than only showing a raw score.
3. **Review and use the result** — Copy or download what you need. Nothing is logged or retained afterwards.

## Use cases

- Verifying a download matches the checksum the publisher listed
- Generating a hash while developing or testing an integration
- Checking the strength of a password or the validity of a certificate
- Security work that must not involve sending the value to a third party

## Tips

- Compare checksums character by character, or paste both into a comparison tool. Eyeballing the first and last few is how tampering gets missed.
- MD5 and SHA-1 are fine for detecting accidental corruption but are broken for security. Use SHA-256 where integrity matters.
- Nothing you enter here is transmitted, so it is safe to check real values rather than dummy ones.

## Common problems

- **The hash does not match the published one** — Confirm the algorithm matches (SHA-256 against SHA-256), then re-download — a truncated download changes the hash.
- **Hashing a large file is slow** — The whole file is read on your device. Large archives take time; leave the tab focused until it finishes.
- **The same input gives a different result elsewhere** — Usually a trailing newline or different text encoding. Hash the exact bytes, not a copy-pasted representation.

## FAQ

### What should I look at first?

The expiry date and the chain. An expired certificate breaks the site for every visitor with a full-page browser warning, and an incomplete chain breaks it on some clients while working in your browser — which is why it so often goes unnoticed.

### Why does my certificate work in Chrome but fail elsewhere?

Almost always a missing intermediate certificate. Browsers often cache intermediates from other sites and paper over the gap; a fresh client, a mobile app or a server-side HTTP library will not. Serve the full chain.

### How long before expiry should I renew?

Automate it. Let's Encrypt certificates last 90 days and are designed to be renewed by a cron job at around 60. Manual renewal is how sites go down on a weekend — a calendar reminder is not a substitute for automation.

### Does a valid certificate mean a site is trustworthy?

No. It proves the connection is encrypted and the domain is what it claims — nothing about the operator's intentions. Phishing sites have valid certificates too; HTTPS is not an endorsement.

### Can I check a certificate on a non-standard port?

Standard HTTPS on port 443 is checked. For mail servers, internal services or anything on another port, a command-line tool such as openssl is the right instrument.

## Related tools

- [MD5 Generator](https://farvixo.com/tools/security/md5-generator): Generate MD5 hashes from text or files
- [SHA1 Generator](https://farvixo.com/tools/security/sha1-generator): Generate SHA-1 hashes from text or files
- [SHA256 Generator](https://farvixo.com/tools/security/sha256-generator): Generate SHA-256 hashes from text or files
- [SHA512 Generator](https://farvixo.com/tools/security/sha512-generator): Generate SHA-512 hashes from text or files
- [File Checksum Generator](https://farvixo.com/tools/security/file-checksum-generator): Verify file integrity with checksums
- [URL Scanner](https://farvixo.com/tools/security/url-scanner): Scan URLs for safety red flags

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