Guides
Practical guides for everyday file, text and data work
Short, concrete walkthroughs for the tasks the tools on this site are built for: organising PDFs, preparing images, converting units, checking dates and tidying text. Each guide explains the order of steps, the common mistakes, and how to verify a result before you send it.
How to Merge and Split PDF Files: A Practical Workflow
Combining and separating PDFs is simple in principle, but page order, file size and encrypted documents trip people up. This walkthrough covers a reliable order of operations.
Read the guide → Guide 02 · 7 min readHow to Reduce Image File Size for Email, Web and Uploads
Most oversized images are oversized because of their dimensions, not their quality setting. Fix the pixel size first, then compress, and the file usually shrinks by far more.
Read the guide → Guide 03 · 6 min readPDF to JPG and Images Back to PDF: When to Convert Each Way
Converting between PDF and image formats is not reversible in the way people expect. Knowing what each direction preserves prevents disappointing results.
Read the guide → Guide 04 · 6 min readChoosing an Image Format: JPG, PNG, WebP and PDF
Format choice affects file size, sharpness and whether transparency survives. A short decision process avoids most conversion problems.
Read the guide → Guide 05 · 7 min readMetric and Imperial Conversions: The Mistakes That Matter
Most unit conversions are simple multiplication, but a handful are not. These are the ones that cause real errors in cooking, travel and technical work.
Read the guide → Guide 06 · 6 min readHow to Calculate Age, Date Differences and Time Spans Correctly
Two people can calculate the same date difference and get different answers, both defensibly. The convention you choose determines the result.
Read the guide → Guide 07 · 6 min readCleaning Up Text: Case, Duplicates and Invisible Characters
Text copied from a PDF, a web page or a spreadsheet usually carries formatting artefacts. Cleaning them systematically is faster than fixing each one by hand.
Read the guide → Guide 08 · 6 min readWatermarks, Page Numbers and Metadata: Polishing a PDF
Small finishing touches decide whether a PDF looks professional. They also carry information you may not intend to publish.
Read the guide →