How-to guides
Step-by-step walkthroughs for the PDF tasks people search for most. Written to work regardless of which tool you use.
How to Add Page Numbers to a PDF
Add page numbers to an existing PDF — at the top or bottom, any position, any format — without going back to the original document.
Read guide →How to Compress Large PDF Files (Over 50MB, 100MB, or More)
Standard PDF compression tools choke on very large files. Here's how to compress a big PDF without hitting upload limits or losing quality.
Read guide →iLovePDF vs Smallpdf: Which Is Better in 2026?
Two of the most popular free PDF tools, head to head. We tested both with the same documents to find out which one is actually worth using.
Read guide →How to Flatten a PDF Form (And Why It Matters Before You Send It)
Flattening a PDF form locks in your answers and prevents them from being changed. Here's when to do it and how.
Read guide →How to Sign a PDF on iPhone (3 Ways That Actually Work)
Sign a PDF on your iPhone without printing, scanning, or downloading a separate app — here are the three methods that actually work in 2026.
Read guide →Best Free Adobe Acrobat Alternatives in 2026
Adobe Acrobat is powerful but expensive. These free and low-cost alternatives handle the same everyday PDF tasks without the $19.99/month price tag.
Read guide →Best Free PDF Editor for Mac in 2026 (Tested)
We tested the most popular free PDF editors for Mac — here's which ones actually let you edit, not just read.
Read guide →How to Remove Pages from a PDF (Without Losing the Rest)
Delete one page or a range of pages from a PDF without re-scanning or recreating the whole document — here's the fastest way to do it.
Read guide →5 Smallpdf Alternatives Worth Switching To in 2026
Smallpdf is good — but its free tier limits and subscription price push a lot of people to look elsewhere. Here are the best alternatives we've tested.
Read guide →Best Free PDF Compressor in 2026 (Tested & Ranked)
We compressed the same 40MB scanned report in every major free PDF compressor. Here's which ones actually kept the text readable.
Read guide →How to Fill Out a PDF Form on Your Computer (No Printer Needed)
Type directly into a PDF form — even if it wasn't built as a fillable form — and save or send it digitally.
Read guide →How to Rotate, Reorder, and Delete Pages in a PDF
Fix sideways scans, reorder mixed-up pages, and remove blanks or duplicates — the page-organizing tasks behind almost every messy PDF.
Read guide →How to Password-Protect a PDF (and When You Actually Need To)
Add a password to a PDF to control who can open or edit it — plus how to choose a password that's secure but won't lock you out.
Read guide →How to Redact a PDF Properly (So the Information Is Actually Gone)
Black boxes aren't redaction. Here's how to permanently remove sensitive information from a PDF before sharing it.
Read guide →How to E-Sign a PDF (No Printing Required)
Add a legally recognized electronic signature to a PDF — contracts, forms, and agreements — without printing, signing, and scanning.
Read guide →How to Compress a PDF Without Losing Quality
Shrink PDF file size while keeping text sharp and images readable — for email attachments, uploads, and storage.
Read guide →How to Merge PDF Files for Free (No Software Install)
Combine multiple PDFs into one document in the right order, with bookmarks intact, using only your browser.
Read guide →How to Convert PDF to Word (and Back) Without Wrecking the Layout
Get an editable Word document from a PDF — and convert it back — while keeping formatting, tables, and images intact.
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