Category: Developer Guides

Practical code and data guides, including JSON troubleshooting, formatting and checks for reliable output.

How to Encode a Mailto Link Subject and Body

Build a mailto link with an encoded subject, a two-line message, preserved plus signs, and checks for the email compose window.

Check whether JSON fields may be omitted or contain null, compare three responses, and separate valid syntax from API contract rules.

Encode a filename containing spaces and a hash sign, preserve directory separators, and check the finished download URL before sharing.

Compare small JSON responses with reordered object keys, expose a changed nested quantity, and keep array order and parsing limits visible.

Find why a JSON formatter changes a large integer ID, preserve its digits when a string is permitted, and check the receiving schema.

Convert a Base64url text sample to standard Base64, check padding and line breaks, and recognize when a byte-oriented converter is needed.

Decode HTML entities in exported text, check references left unchanged, and handle the result correctly before pasting it into a new destination.

Learn why MD5 is not reversible encryption, compare known public text samples, and understand the limits of matching a hash.

Keep meaningful spaces between HTML links and spans, choose minifier settings carefully, and check the rendered page before publishing.

Format a fictional API example into readable JSON, check field types and exact values, and avoid losing precision when sharing it.