PDFfont blog

PDF editing guides and answers

502 practical articles on editing PDF text in the document's own font, redacting, signing, filling forms, merging pages and protecting files — all in the browser.

Open the editor

In-depth guides

Fonts and formatting

How to Edit a PDF Without Changing the Font

Most PDF editors swap your text for Helvetica or hide it under a white box. Here is how to edit PDF text so the typeface, size and baseline stay identical.

2 min read

Edit PDF

How to Edit PDF Text Online in 2026

A step-by-step guide to editing text in a PDF from your browser — no Acrobat, no install, and with the document's original font preserved.

2 min read

Alternatives

The Best Adobe Acrobat Alternative for Editing PDF Text

Acrobat Pro costs about $240 a year. Here is an honest comparison of what you gain, what you give up, and when Acrobat is still the right call.

2 min read

Security and privacy

How to Redact a PDF So the Text Is Really Gone

Black rectangles do not delete anything. Learn how proper PDF redaction removes the underlying text so it cannot be copied, searched or recovered.

2 min read

Forms and signing

How to Sign a PDF Online Without Printing It

Draw, type or upload a signature, place it precisely, add dated initials and flatten the file so nobody can move it.

2 min read

Forms and signing

How to Fill Out a PDF Form (Even When It Is Not Fillable)

Complete interactive PDF forms, add fields to flat ones, tick checkboxes and flatten the result before sending.

2 min read

Pages and files

How to Merge PDF Files Into One Document

Combine several PDFs, reorder the pages, drop the ones you do not need and export a single clean file.

2 min read

Platforms

How to Edit a PDF on iPhone Properly

Markup only lets you scribble. Here is how to change real text in a PDF on an iPhone and save it back to Files or share it.

2 min read

Security and privacy

How to Password Protect a PDF With AES-256

Add an open password, restrict printing and copying, and understand what PDF permissions actually stop.

2 min read

Edit PDF

How to Edit a Scanned PDF

Scanned pages hold pixels, not text. Here is what you can realistically change, and how to make edits look like part of the scan.

2 min read

Fonts and formatting

How to Change Font Size in a PDF Without Breaking the Layout

Resize text in a PDF while keeping the line, the margins and the surrounding paragraph intact.

2 min read

Fonts and formatting

How to Find Out Which Font a PDF Uses

Identify the exact typeface, weight and point size behind any line of text in a PDF — and get the font itself.

2 min read

Documents

How to Edit an Invoice PDF Correctly

Change amounts, dates, addresses and reference numbers on an invoice PDF while keeping the layout identical.

2 min read

Documents

How to Edit a CV or Resume PDF

Update a job title, date range or phone number in your CV PDF without rebuilding the whole document.

2 min read

Documents

How to Edit a Contract PDF and Track What Changed

Amend clauses, dates and party names in a contract PDF, then sign and flatten it responsibly.

2 min read

Pages and files

How to Delete Pages From a PDF

Remove unwanted pages, blank scanner output or confidential appendices from a PDF and export the rest.

2 min read

Pages and files

How to Compress a PDF Without Wrecking the Quality

Get a PDF under an email or upload limit while keeping text sharp and images legible.

2 min read

Pages and files

How to Convert a PDF to PNG or JPG

Export any page of a PDF as a high-quality image for slides, listings or social posts.

2 min read

Edit PDF

How to Add Text to a PDF Anywhere on the Page

Insert new text blocks into a PDF, match them to the document's own font, and position them precisely.

2 min read

Platforms

The Best Way to Edit PDFs on a Mac

Preview cannot change existing text. Here is how to do genuine PDF text editing on macOS without Acrobat.

2 min read

Documents

How to Edit a Payslip PDF

Correct an address, tax code or employer detail on a payslip PDF while keeping the payroll layout intact.

2 min read

Documents

Editing a Bank Statement PDF: What Is and Is Not OK

How to redact account numbers and personal data on a bank statement before sharing it — and what you must never change.

2 min read

Platforms

How to Edit a PDF on Android

Change real text in a PDF on an Android phone or tablet from Chrome, then save to Drive or share it.

2 min read

Platforms

How to Edit PDFs on a Chromebook

Chromebooks cannot install Acrobat. Here is full PDF text editing, signing and redaction in the browser.

2 min read

Edit PDF

How to Make a PDF Editable

Three different things people mean by 'editable PDF', and how to get each one.

2 min read

Alternatives

PDF Editors That Do Not Add a Watermark

Why free PDF tools brand your document, and how to get clean output you can actually send.

2 min read

Pages and files

How to Rotate PDF Pages and Save It Permanently

Fix sideways scans so they stay fixed in every reader, not just on your screen.

2 min read

Pages and files

How to Split a PDF Into Separate Files

Extract a page range, break a bundle into single files, or pull one chapter out of a long report.

2 min read

Forms and signing

How to Highlight and Annotate a PDF

Highlights, underlines, strikethrough, boxes and sticky notes — and how to make them print.

2 min read

Security and privacy

Is It Safe to Edit PDFs Online? What Happens to Your File

Where your document actually goes when you use a browser PDF editor, and what to check before uploading anything sensitive.

2 min read

Edit PDF

How to Replace Text in a PDF (Not Cover It Up)

The difference between true text replacement in the content stream and the white-box trick most editors use.

2 min read

Fonts and formatting

Why Words Run Together After Editing a PDF (and How to Fix It)

Missing spaces, square boxes where spaces should be, and stretched gaps — the causes and the fixes.

2 min read

Alternatives

How to Edit a PDF Without Adobe

Everything Acrobat is usually bought for — text edits, signing, redaction, forms, merging — done without an Adobe subscription.

2 min read

Documents

How to Edit a Certificate PDF Without Ruining the Design

Update a name, date or course title on a certificate while keeping the ornate typeface and centring.

2 min read

Forms and signing

How to Add an Image or Logo to a PDF

Insert a logo, stamp, photo or signature image into a PDF at the right size and resolution.

2 min read

Forms and signing

What Flattening a PDF Means and When to Do It

Flattening locks form values, signatures and annotations into the page. Here is when that helps and when it hurts.

2 min read

Documents

How to Edit and Sign a Tenancy Agreement PDF

Fill in names, dates, rent and deposit details on a tenancy agreement, then sign and send it properly.

2 min read

Pages and files

How to Extract Text From a PDF Accurately

Copy text out of a PDF without losing line breaks, columns or special characters.

2 min read

Platforms

How to Edit a PDF on Windows Without Buying Software

Edge can view and annotate, not edit. Here is real PDF text editing on Windows 10 and 11 with nothing to install.

2 min read

Alternatives

Do You Need a Subscription to Edit PDFs?

An honest look at one-off purchases, subscriptions and free tools for PDF editing, and which suits which user.