Which hash algorithms are supported?

The tool uses the Web Cryptography API to compute SHA-1, SHA-256, SHA-384, and SHA-512 digests. MD5 is not included because it is not exposed by Web Crypto in browsers.

How do I hash a binary file?

Click Hash file and select any file. The digest is computed from the raw bytes. Editing the text field switches back to hashing the text content instead.

How does hash comparison work?

Paste two hex strings into Hash A and Hash B. The tool normalizes whitespace and case, then shows whether they match — useful for verifying downloads against a published checksum.

Are my files uploaded anywhere?

No. File contents are read with FileReader and processed only inside your browser using crypto.subtle.digest.

哈希生成

计算 SHA-1/256/384/512，支持文本与文件

Text input

Hashes update automatically as you type. Uploading a file hashes raw bytes instead (shown below).

Loading editor...

Compare hashes

Paste two hex digests (spaces ignored, case-insensitive). Useful for verifying downloads.

Hash A

Hash B

Compute cryptographic hashes without uploading anything

SHA-256 is everywhere — verifying downloads, signing payloads, comparing files. Computing a hash in the browser keeps the input on your machine via the Web Crypto API, so you can hash sensitive text or large files locally without trusting a server. The tool also supports SHA-1, SHA-384, and SHA-512 for legacy and high-security needs.

Use the generator when you need to

Verify a download against a published checksum

Hash the file and compare against the project's listed SHA-256 to confirm integrity.

Generate a deterministic identifier

Hash a canonical payload to produce a stable ID for caching, deduplication, or content addressing.

Sanity-check a webhook signature

Compute the expected hash of a payload to validate against the signature header from the upstream service.

How to hash text or files quickly

1
Paste the text you want to hash, or click Hash file and select a file.
2
Pick the algorithm (SHA-1, SHA-256, SHA-384, or SHA-512).
3
Copy the resulting hex digest, or use the compare tool to verify against a published checksum.

Keep going

Generate random IDs

Pick UUIDs when you want randomness rather than a deterministic hash.

Encode hash output as Base64

Convert hex digests to Base64 when an API expects them in that form.

Decode signed JWTs

Inspect token signatures alongside hashing utilities when debugging auth.

Validate signed payloads

Confirm the JSON you're hashing is well-formed before computing a digest.

Common hashing workflows

Verify a release artifact

Hash the downloaded file and compare against the project's published checksum before installing.

Diagnose a webhook signature mismatch

Hash the canonical payload locally to confirm what the upstream signature should be.

Detect duplicate documents

Use the hash of canonical content to identify duplicates without storing the documents themselves.

常见问题

工具基于 Web Cryptography API 计算 SHA-1、SHA-256、SHA-384、SHA-512 摘要。由于浏览器 Web Crypto 不提供 MD5，因此不包含 MD5。

点击 Hash file 并选择任意文件，工具会基于原始字节计算摘要。若你编辑文本输入框，则会切回对文本内容进行哈希。

把两个十六进制字符串分别粘贴到 Hash A 和 Hash B。工具会统一空白和大小写，然后显示是否匹配——常用于把下载文件与发布的 checksum 做校验。

不会。文件内容通过 FileReader 读取，并仅在浏览器内使用 crypto.subtle.digest 处理。