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Data Tools
2D Barcode Guide: Data Matrix, PDF417 and Aztec

How to choose between Data Matrix, PDF417 and Aztec, what the 2D Barcode Generator really produces, which codes scan in our tests, and the limits you will hit.

Data Tools
Base64 Guide: Encode, Decode and Avoid Common Mistakes

A practical Base64 guide: what it is (and is not), how to encode and decode text and files, why it adds 33% to size, URL-safe variants, Unicode pitfalls and data URIs.

Data Tools
How to Read a CSV File Correctly: Delimiters, Quotes and Encoding

View CSV as a table and avoid the usual traps: wrong delimiter, quoted fields, stray quotes, encoding problems and sorting surprises, with tested examples.

Data Tools
Hash Generator Guide: MD5, SHA-1, SHA-256 and SHA-512 Explained

What hashes are, which algorithm to use, how to generate text and file hashes, how to verify a download checksum, and why hashes are not the way to store passwords.

Data Tools
Line Barcode Guide: Pick the Right 1D Format

Code 128, Code 39, EAN-13, UPC-A, ITF-14, GS1-128 and more: which linear barcode to use, how check digits work, and what the Line Barcode Generator accepts, tested.

Data Tools
QR Code Guide: Create Codes That Actually Scan

How to make a QR code that scans reliably: content formats for URLs, WiFi, email and phone, size and capacity limits, colours and styles that work, and the mistakes to avoid.

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