Text Checksum Generator

Generate MD5, SHA-1, SHA-256, SHA-384, SHA-512, or SHA3 checksums from pasted text, perfect for quick integrity checks and deduplication.

Algorithm:

Input

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Output

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What is Text Checksum Generator

Last reviewed: April 18, 2026

Text Checksum Generator produces a cryptographic checksum of pasted text using MD5, SHA-1, SHA-256, SHA-384, SHA-512, or SHA-3 at the click of an algorithm switcher.

Checksums are ideal for quick integrity checks, deduplication, caching, and diffing text snippets without storing the full content — they're the same digests you would compute with `openssl dgst` on a terminal.

Why use it

Compare two text snippets by hash to find duplicates without storing the content.
Create deterministic cache keys for memoization.
Verify that copy-paste transfers did not change payload bytes.
Produce integrity fingerprints for audit trails and manifests.
Swap hash algorithms instantly to match a spec.

Features

One-click switch between MD5, SHA-1, SHA-256, SHA-384, SHA-512, SHA-3
Hex output that matches OpenSSL
Client-side hashing — input never uploaded
Instant recompute as you edit
Great for deduplication and cache keys

How to use Text Checksum Generator

Paste your text. Drop the text you want to checksum into the input panel.
Pick an algorithm. Use the algorithm selector to choose MD5, SHA-1, SHA-256, SHA-384, SHA-512, or SHA-3.
Copy the digest. Copy the hex checksum from the output panel for use in manifests, diffing, or cache keys.

Example (before/after)

Text input (SHA-256)

release-manifest-v2026.04.18

Checksum

d7a8fbb307d7809469ca9abcb0082e4f8d5651e46d3cdb762d02d0bf37c9e592

Common errors

Choosing a weak algorithm

MD5 and SHA-1 are fine for non-security deduplication but are unsuitable for security use.

Fix: Pick SHA-256 or SHA-3 when the hash is security-relevant.

Whitespace differences

Trailing newlines, tabs, or BOM characters change the checksum even if the visible text looks identical.

Fix: Normalize whitespace and encoding before hashing when parity matters.

Expecting base64 output

Most hashing CLIs produce hex.

Fix: Convert the hex output to base64 using a matching tool if your target needs that format.

FAQ

Which algorithms are supported?

MD5, SHA-1, SHA-256, SHA-384, SHA-512, and SHA-3.

Should I use MD5 for integrity?

For non-security integrity it is fine and fast. For security-relevant scenarios prefer SHA-256 or SHA-3.

Does the output match OpenSSL?

Yes. The hex output matches `openssl dgst -<alg>` for the same input bytes.

Is my input sent to a server?

No. Hashing is computed in the browser.

Can I hash binary content?

This is a text tool. Convert binary data to base64 first, or use a file-checksum tool.

Why do two visually identical strings produce different hashes?

Invisible characters such as BOM, non-breaking spaces, or line-ending differences change bytes and therefore the hash.

Related tools

Inspect raw hash tools or jump straight to a specific algorithm for more SEO context. You can also browse the full Cryptography & Hashing category for more options.

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