Developer Tools

176 tools

JSON, regex, hashing, encoding and other everyday developer utilities.

176 free tools
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All Developer Tools Tools

Showing 1–24 of 176

ADFGVX Cipher Tool
Encrypt or decrypt text with the ADFGVX cipher, the WWI German field cipher combining grid substitution with columnar transposition.

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AES Encryption Tool
Encrypt or decrypt text with AES-256, the modern symmetric encryption standard, using a password of your choice.

Free No signup

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Affine Cipher Tool
Encrypt or decrypt text with an affine cipher, combining a multiplication and a shift for a larger key space than Caesar alone.

Free No signup

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ANSI Art Creator
Turn short text into block-letter ANSI art, wrapped in real ANSI color escape codes for a terminal.

Free No signup

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ASCII Art Generator (Text to Image)
Turn short text into large block letters built entirely from plain ASCII characters.

Free No signup

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ASCII Table Reference Viewer
Look up every ASCII character alongside its decimal, hex, octal, and binary codes.

Free No signup

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Aspect Ratio Calculator
Simplify a width and height into a clean aspect ratio like 16:9, using the greatest common divisor.

Free No signup

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Atbash Cipher Tool
Encode or decode text with the Atbash cipher, which mirrors each letter to its opposite in the alphabet.

Free No signup

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Baconian Cipher Tool
Encode or decode text with the Baconian cipher, representing each letter as a unique 5-character sequence of As and Bs.

Free No signup

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Barcode Generator
Generate a scannable Code 39 barcode as an SVG from digits, uppercase letters, space, and dash.

Free No signup

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Base Converter
Convert a number between any two bases from 2 to 36.

Free No signup

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Base32 Encoder/Decoder
Encode text to Base32 or decode Base32 back to text, using the standard RFC 4648 alphabet.

Free No signup

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Base58 Encoder/Decoder
Encode text to Base58 or decode Base58 back to text, using the Bitcoin Base58 alphabet.

Free No signup

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Base64 Encoder/Decoder
Encode text to base64 or decode base64 back to plain text, instantly and in your browser.

Free No signup

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Base64 URL-Safe Encoder/Decoder
Encode or decode text using URL-safe Base64 (with "-" and "_" instead of "+" and "/").

Free No signup

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Base85 Encoder and Decoder
Encode text to Ascii85 (Base85) or decode Ascii85 back to text — the encoding used by PostScript and PDF.

Free No signup

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Bcrypt Password Hash Generator
Generate a Bcrypt password hash with a configurable cost factor, ready to store in a database.

Free No signup

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Bifid Cipher Tool
Encrypt or decrypt text with the Bifid cipher, combining a Polybius square with a coordinate-mixing step for extra diffusion.

Free No signup

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BIMI Record Checker
Check a domain for a BIMI (Brand Indicators for Message Identification) record.

Free No signup

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Blank Space Generator (Invisible Character)
Generate copy-paste-ready invisible Unicode characters (zero-width space and similar) for chat apps, usernames, and documents.

Free No signup

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Book Cipher Tool
Encode or decode text with a book cipher, replacing each word with its position number in a shared reference text.

Free No signup

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Bulk Email Extractor from Text
Pull every unique email address out of pasted text.

Free No signup

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Bulk Phone Number Extractor from Text
Pull phone-number-shaped substrings out of pasted text.

Free No signup

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Caesar Cipher Tool
Encrypt or decrypt text with a classic Caesar cipher by shifting each letter a fixed number of positions.

Free No signup

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Frequently asked questions

The Developer Tools category currently has 176 tools — see the full list above.

Yes — every tool in this category is free, with no signup and no watermarks on generated documents.

Yes. As new tools are published in this area, they appear here automatically.