Yula Studios · Practical knowledge

Guides for common web and developer tasks

Clear instructions, limitations, and references for working with code, URLs, writing, images, and security. Each guide links to a browser tool where it is useful.

Developer tools

JSON Formatter and Validator: Fix Common Syntax ErrorsFormat JSON, find syntax errors and understand what parsing does not validate. Includes a practical workflow and a free browser-based formatter.Base64 Encoding and Decoding: What It Does and When to Use ItUnderstand Base64 encoding, padding, UTF-8 text, data URLs and size overhead before encoding or decoding data.UUID and GUID: How Unique Identifiers WorkLearn what a UUID contains, how random UUID v4 values are used, and why uniqueness checks and access control still belong in your application.JavaScript Regular Expressions: Patterns, Flags and TestingBuild and test JavaScript regular expressions with clear examples, edge cases, engine limits, and guidance for validating real input.URL Encoding: Query Parameters, Paths and Percent-EncodingLearn when to percent-encode a URL component, how query parameters handle spaces, and why encoding is not validation or encryption.

Writing and text

Word and Character Counts: Why Different Tools DisagreeUnderstand word, character, paragraph and reading-time counts, including Unicode emoji and why platform-specific limits can differ.

Images and web performance

How to Compress Images for the Web: Format, Size and QualityReduce web image weight by choosing sensible dimensions, comparing formats and checking visual quality on the final output.QR Code Generator Guide: URLs, Wi-Fi and Print ChecksChoose a QR payload, create a code, and test its destination, contrast, quiet zone and printed size before sharing it.

Security and verification

How to Create Strong Passwords: Length, Uniqueness and ManagersLearn why unique passwords, password managers and multi-factor authentication matter, with careful context for current NIST guidance.SHA-256 Hashes: Checksums, File Integrity and SignaturesUnderstand what a SHA-256 digest can confirm, why a hash is not encryption, and how trusted checksums differ from digital signatures.