handyfold.
Home

THE HANDYFOLD NOTEBOOK

Make sense of the small things.

Practical guides for better files, clearer results and fewer surprises. Start with a question, then put the answer to work.

All blog articles

Stack of paper files arranged in a cabinet

DOCUMENTS · 5 MIN READ

Before you merge: plan a PDF people can navigate

Turn separate PDFs into an ordered reading pack, with page counts and a review method that catches missing or repeated material.

Read the guide
A historical CIA page with visibly redacted passages

DOCUMENTS · 5 MIN READ

Extracting PDF pages is not secure redaction

Understand what page extraction changes, what hidden information may remain, and when a dedicated redaction workflow is necessary.

Read the guide
An inkjet printer with a sheet in its paper feeder

IMAGES · 5 MIN READ

From image to PDF: get the print size right

Separate pixel dimensions, PDF page geometry and printer scaling before committing a photo sheet or template to paper.

Read the guide
An archival photographic contact-print album with multiple frames

IMAGES · 5 MIN READ

A contact sheet that helps you choose photographs

Build a readable thumbnail index with filenames and a review process that keeps selections traceable to the originals.

Read the guide
A photographed square grid with marked cells

IMAGES · 5 MIN READ

Split an image into tiles without losing edge pixels

Follow the boundaries of an uneven grid, preserve the final row and column, and check a tile set before publishing or printing.

Read the guide
A CSV text example with named columns and records

DATA · 5 MIN READ

When CSV breaks: quotes, commas and line breaks

Diagnose shifted columns and split records by reading the file structure before changing the data.

Read the guide
A terminal example working with CSV file data

DATA · 5 MIN READ

Before joining CSVs, investigate the matching key

Find duplicate identifiers, preserve leading zeros and explain unmatched rows before combining two tables.

Read the guide
A pivot table with row groups and aggregated values

DATA · 5 MIN READ

Group summary or pivot table? Let the question decide

Use one small hours ledger to compare a grouped answer with a two-dimensional pivot, then reconcile the totals.

Read the guide
A frame from Elephants Dream with German subtitles

WRITING · 5 MIN READ

Subtitle offset or timing drift? Diagnose before shifting

Measure cue errors at several points, choose a fixed offset only when appropriate, and check the converted subtitle track.

Read the guide
A labeled sine-wave diagram showing amplitude and wave structure

AUDIO · 5 MIN READ

Same peak, different loudness: what normalization changes

Understand peak gain, clipping and perceived loudness before adjusting a recording or comparing two tracks.

Read the guide
Physical audio mixer faders and channel controls

AUDIO · 5 MIN READ

Make an audio cut gentler with a short fade

Locate a click at an edit boundary, preserve consonants and room tone, and distinguish edge fades from overlapping crossfades.

Read the guide
The Willis World Clock showing a map and several time references

EVERYDAY · 5 MIN READ

One event, several clocks: UTC and calendar files

Prepare a one-off calendar event with explicit UTC times and verify its date and local display before sharing the ICS file.

Read the guide