Practical guides

Practical guides for everyday digital tasks

Choose image formats, prepare PDFs, understand text counts and make usable QR codes. Concise guidance linked to the tools that perform each task.

PNG vs JPG: choose the right image format

Choose PNG or JPG for photos, screenshots and transparent graphics. Learn what conversion changes and how to check the result.

Understand WebP and PNG exports, why converting can make a file larger, and which JustToolset settings affect the result.

Convert a supported HEIC or HEIF still image locally, choose JPG or PNG, and understand primary-image, metadata and browser limits.

Separate pixel dimensions from file size. Choose resizing, compression or format conversion and check the downloaded bytes against an upload limit.

Choose the right PDF page operation, check the page order and understand limits for encrypted, signed and interactive documents.

Understand language-aware word counts, visible character counts, paragraph boundaries and the difference between text limits and displayed counts.

Calculate minutes from words per minute, choose a practical pace and allow time for pauses, slides and audience interaction.

Create a Wi-Fi QR card, understand what it reveals, test special characters and print a readable code without showing the password in plain text.

Understand fixed QR payloads, destination links, PNG versus SVG downloads and how to check a code before publishing it.

Choose the right JSON operation, fix strict syntax errors and understand number preservation and viewer limits in JustToolset.

Inspect a real conversion in browser developer tools. Distinguish file uploads from static codec downloads and Google Analytics requests.