Guides
The job, explained — then done on your device.
Each guide covers one real task end to end: what the format actually does, the mistakes that leak information or break files, and the exact steps in Filozy. Short guides for every individual tool live in the Help Center.
- Split PDF · Split PDF by size or bookmark · OCR PDF
Split a scanned book into chapters without uploading it
Seven ways to cut a long PDF into parts — bookmarks, chapter words, blank separator sheets, ranges, every N pages, equal parts, size targets — and which suits a scan.
- Compress PDF · Flatten PDF · Split PDF by size or bookmark
Shrink a PDF under a 2 MB, 5 MB or 10 MB upload limit
What makes a PDF large, the lossless step to try first, when to lower image resolution and by how much, and how to split as a last resort — without uploading.
- Edit PDF metadata · Redact PDF · Flatten PDF
Remove metadata from a PDF before publishing it
What a PDF's metadata reveals — author, software, template history, dates — where it hides in two separate places, and how to inspect and clear it on your device.
- Redact PDF · Edit PDF metadata · OCR PDF
How to redact a PDF properly (a black box is not redaction)
Why a black rectangle over text leaves it readable, the three places information hides in a PDF, and a redaction workflow that removes it — in your browser.
- PDF to Word · OCR PDF · Word to PDF
PDF to Word without losing the layout: faithful vs editable
Why PDF to Word is hard, the difference between a faithful page reproduction and flowing editable text, which to choose for which job, and what to check afterwards.
- Convert PDF to PDF/A · Edit PDF metadata · Flatten PDF
PDF/A for archives: what conformance requires and why fonts matter
What the PDF/A archival standard demands, why many converters produce files that fail validation, how to fix the usual font problem, and how to check a result.
- Protect PDF · Unlock PDF · Redact PDF
Password-protecting a PDF: what AES-256 does and does not protect
Open password versus permissions, what AES-256 really guarantees, why 'no printing' is a request not a lock, and how to protect a PDF on your own device.
- OCR PDF · Auto crop PDF · Redact PDF
OCR a scanned contract on your own computer
Turn a scanned PDF into a searchable document without sending it to an OCR service: what affects accuracy, the steps, what to check afterwards, and honest limits.
- Merge PDF · Organize PDF pages · Compress PDF
Merge PDFs on a phone without installing an app
Combine and reorder PDFs on an iPhone, iPad or Android phone using only the browser: finding the files, reordering by touch, where the result saves, and limits.
- Merge PDF · Compress PDF
How to check whether a PDF tool uploads your file
A five-minute test with your browser's developer tools that shows what any free PDF site sends to its servers — and what a local tool looks like instead.
- Flatten PDF · Fill PDF forms · Protect PDF
Flatten a PDF before sending: forms, comments and signatures
What flattening does to form fields, comments and signature marks, why it prevents accidental edits, what it does not do, and when not to flatten.
- Add PDF header footer Bates numbers · OCR PDF · Protect PDF
Bates numbering for discovery, done on your own machine
What Bates numbers are, the rules they follow, how to keep a sequence continuous across batches, and how to stamp them in your browser without uploading.
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