Fake Hash Generator

How to use

1. 1️⃣
   Choose your options above
2. 2️⃣
   Click Generate
3. 3️⃣
   Copy your result

Detailed instructions

1. Select your desired hash format from the Hash Type dropdown: MD5, SHA-1, SHA-256, or bcrypt.
2. Set the Number of Hashes count to match how many placeholder values you need for your seed file or test.
3. Click Generate to produce the hash list instantly in the output panel.
4. Copy individual hashes by clicking them, or copy the full list to paste into your SQL fixture, JSON mock, or documentation.

Use Cases

• •Seeding password_hash columns in a Postgres fixture file with structurally valid bcrypt strings
• •Populating ETag or checksum fields in mock API responses for Postman or WireMock test suites
• •Generating bulk SHA-256 placeholders for a Cypress end-to-end test that validates 64-char hex input
• •Adding realistic MD5 values to legacy CSV imports during a database migration dry run
• •Writing auth service documentation with concrete bcrypt hash examples instead of placeholder text

Tips

• →For bcrypt columns, generate hashes in the same count as your seed rows so each user record gets a unique placeholder.
• →If your schema enforces a VARCHAR(60) for bcrypt or VARCHAR(64) for SHA-256, verify column length before bulk-inserting — a mismatch will silently truncate or error.
• →Pair SHA-256 fake hashes with a fake UUID generator to create complete mock user records with both an ID and a password hash in one pass.
• →Use MD5 format when seeding legacy systems or testing code that validates 32-character hex — many older PHP and Python apps still write MD5 to the database.
• →When writing API documentation, generate three to five SHA-256 hashes and use them as consistent examples across request and response samples so examples look cohesive.
• →Avoid reusing the same fake hash across multiple rows in a unique-indexed column — generate a fresh batch for each seeding run to prevent constraint violations.

FAQ