Is my input sent to a server for hashing?

No. All hashing runs locally in your browser using the built-in Web Crypto API.

What hash algorithms are supported?

MD5, SHA-1, SHA-256, SHA-384, and SHA-512 are supported. SHA-256 is recommended for most use cases.

MD5 is not safe for security purposes — collisions can be generated intentionally. It's still useful for non-security checksums like verifying file integrity against known-good hashes.

Can I hash a file instead of text?

Not in this tool — the input is text-only. For hashing files locally, use a command-line tool: shasum -a 256 file (macOS/Linux), CertUtil -hashfile file SHA256 (Windows), or Get-FileHash file -Algorithm SHA256 (PowerShell). Browsers can hash file Blobs via Web Crypto too, but exposing that here would require a different workflow than the current paste-and-hash UI.

What's the difference between hash and HMAC?

A plain hash (SHA-256, MD5, etc.) only depends on the input — anyone can compute it given the content. An HMAC adds a secret key: the same input with a different key produces a different output. Use HMAC when you need to prove a message came from someone with the shared secret (webhook signatures, API request signing, session integrity). Use a plain hash for content fingerprinting and deduplication.

What's the difference between a hash and encryption?

Encryption is reversible given the right key — you can recover the original content. Hashing is one-way — given a hash, you can't recover the input (you can only check whether a candidate input produces the same hash). Use encryption for confidentiality; use hashing for integrity verification and content fingerprinting.

安全与随机

哈希生成器

生成 SHA-1、SHA-256、SHA-512 哈希。

数据留在您的设备无需上传至服务器可离线使用

输入

MD5

计算中...

SHA-1

计算中...

SHA-256

计算中...

SHA-512

计算中...

为什么用这个工具

本地计算文本哈希，用于校验和比对。

适合调试摘要值、比对内容一致性。

支持多种 SHA 算法同步查看。

如何使用

01输入文本。

02复制需要的哈希结果。

复制前快速检查

先确认输入格式符合你的预期。

在把结果用于文档、链接、配置或消息前快速扫一眼。

只复制你真正需要的输出。

常见问题

支持哪些算法？

支持 SHA-1、SHA-256、SHA-512。

哈希生成器

为什么用这个工具

如何使用

复制前快速检查

常见问题

相关工具

Base64 编解码

JWT 工具

JSON 格式化

哈希生成器

Base64 编解码→

JWT 工具→

JSON 格式化→

Base64 编解码

JWT 工具

JSON 格式化