PDF guides & explainers
One question per post, answered properly — how the tools work, what actually matters in a workflow, and honest numbers when the API is involved.
Alternate & Mix PDFs: Fix a One-Sided Scan
A duplex document fed through a single-sided scanner comes out as two files — all the fronts, then all the backs. Interleaving puts the pages back in order.
LegalLegalWorkflow: Writing on Stamp Paper Without Reprinting It
Stamp paper is still the backbone of a thousand agreements — and typing on it is still done by printing, writing and scanning again. Here is the shorter route, and the details that keep the page clean and valid.
E-SignE-Sign vs. Printing: How to Get a Contract Signed Online
Printing, signing, scanning and emailing a PDF back is a three-day loop with a blurry result. E-signing is not just a faster signature — it is a record of who signed what, when, and in what order.
Format & StyleBates Numbering Across a Batch of PDFs
Discovery sets live or die by a single running number. Bates stamps it across every file in one batch.
OrganizeCompare Two PDFs: See What Actually Changed
Revisions arrive as final_v3.pdf and nobody remembers what moved. This tool names every difference instead of asking you to eyeball two copies.
OrganizeCrop PDF Margins: Trim the Whole Document
Wide margins waste screen space and print toner. Cropping sets the visible area once for the whole document.
Format & StyleRemove Comments and Highlights From a PDF
A review round leaves a PDF covered in other people's notes. Removing the annotations leaves the document clean.
OrganizeDelete Pages From a PDF Without Rebuilding It
Blank scans, a duplicated page, an internal cover sheet: deleting is a two-click job when you can see the thumbnails.
APIWhat Our PDF API Actually Exposes — Credits, Limits and the Browser Boundary
A short, honest API surface beats a long list of routes that cannot finish the job. Here is what is live, what is free, and why signing stays in the browser.
How-toHow to Split a PDF (Pages, Ranges, Every N Pages)
“Split” means at least five different jobs. Here is which of them fits invoices, chapters, forms or a stubborn upload limit — and how to get every part out in one pass.
Format & StyleDeskew Scanned PDF Pages Straight
A page fed at two degrees looks fine until it is printed or OCR'd. Deskewing measures the tilt and corrects it.
How-toHow to Merge PDF Files (Free, In Order, No Watermark)
Combining PDFs is a two-minute job — unless the order is wrong or the scanner split your pages across two files. Here is the quick guide, including the classic scanning trick most people miss.
How-toHow to Reorder, Rotate and Delete PDF Pages
Scanned the pages out of order? One sheet upside down? A page that shouldn't be there at all? All three are one job — and one pass over the page cards fixes them.
Format & StyleEdit PDF Metadata: Title, Author, Keywords
The title bar of a PDF viewer shows whatever the producer wrote. Fixing the metadata is the last step before publishing.
How-toHow to Reduce PDF File Size Without Losing Quality
A 40 MB scan is almost always a pile of full-page images wearing a PDF costume. Once you know where the weight lives, compression stops being a gamble and becomes a setting you choose.
Format & StyleExtract Images From a PDF as JPG or PNG
The photos are inside the PDF, not lost in it. Extraction returns them as files you can reuse.
How-toHow to Convert a PDF to Word (Editable, Layout Intact)
PDFs are not meant to be edited — that is the entire point of the format. Converting one back to Word restores the editability; knowing two things up front gets the right result on the first try.
OrganizeExtract Pages From a PDF Into a New File
Send chapter four, not the whole report. Extraction writes a new file and leaves the original where it was.
How-toHow to Edit Text in a PDF (Without Rebuilding the File)
A PDF is a print job, not a document — it describes where ink lands, not paragraphs. Understanding that one fact is the difference between a clean edit and an hour of fighting a file.
How-toJPG to PDF: Turn Photos Into One Clean Document
A folder of photos is not a document. With one page size, one order and sensible margins, the same pictures become a PDF that looks deliberate — applications, expenses and portfolios alike.
Convert from PDFPDF to Text: Copy the Words Out
Plain text is what a script, a diff or a search index wants. Extraction writes it out page by page.
Optimize & RepairFlatten a PDF: Freeze Forms and Annotations
A filled form that renders differently in every viewer is not finished. Flattening commits the appearance to the page.
ExplainerMake a Scanned PDF Searchable: OCR Without Uploading the Scan
Scanners produce pictures of paper, and you cannot search a picture. OCR turns those pixels into a real text layer — and it can run entirely inside your browser, which matters more than you'd think.
OrganizeFlip or Mirror a PDF Page Horizontally
Iron-on transfers and back-lit artwork need a mirror image. Flipping the page is a single setting, not a redraw.
How-toHow to Sign a PDF Without Printing It
The print-sign-scan ritual wastes ten minutes and a sheet of paper per signature. Filling and signing in the browser takes one — and the signature you draw once is reusable forever.
Format & StyleConvert a PDF to Grayscale for Printing
Colour pages cost more to print and often read no better. Grayscale keeps the structure and drops the ink.
SecurityHow to Password-Protect a PDF — and What It Actually Protects
A PDF password can mean two very different things: a lock on opening the file, or a rule book about what readers may do with it. Knowing which one you need — and what neither can protect you from — changes how you use it.
Format & StyleAdd a Header or Footer to Every PDF Page
Case numbers, client names, page counts: the line belongs on every page, and it should number itself.
SecurityIs It Safe to Upload PDFs to Online Tools?
Every online PDF tool asks you to hand over your file. That is fine for a takeout menu and not fine for a passport — here is how to tell which side of that line a service sits on.
Convert to PDFHTML to PDF: Print a Web Page Properly
Browser print dialogs cut off the right-hand column and print the cookie banner. This renders the page at the width you choose.
OrganizeN-up PDF: Two, Four or More Pages per Sheet
Proofs, handouts and booklets read fine at four pages per sheet — and use a quarter of the paper.
Format & StyleAdd Page Numbers to a PDF
A PDF without page numbers is hard to cite and impossible to staple. Numbering takes one pass.
Format & StyleAdd Bookmarks to a PDF and Build the Outline
The sidebar outline is how readers move through a long PDF. Building it takes a list of titles and page numbers.
Edit & SignMake a Fillable PDF Form From a Flat Page
A scanned form is a picture of a form. Adding real fields makes it something people can fill in without a printer.
Convert from PDFPDF to Excel: Tables That Stay Tables
Copying a table out of a PDF by hand is how typos get into a spreadsheet. The tables can be read directly.
Convert from PDFPDF to JPG: Convert Pages to Images
Somewhere that will not accept a PDF — a CMS, a photo frame, a fax portal — will accept a JPG.
Convert from PDFPDF to PowerPoint: One Page per Slide
A PDF report can become a deck in one step — each page as a slide, ready to annotate or present.
SecurityRedact a PDF So the Text Is Really Gone
A black rectangle is not redaction — the text underneath is still selectable. This tool removes it from the file.
ScansRename a PDF From Its Own Text
Scans arrive as scan0001.pdf. The invoice number is on the page — use it as the filename instead of typing it.
Optimize & RepairRepair a PDF That Will Not Open
A file that will not open is not always a lost file. Repair rebuilds the structure page by page.
OrganizeResize PDF Pages to A4, Letter or Custom
A document built for Letter prints with a clipped edge on A4. Resizing re-fits the page instead of reprinting the file.
OrganizeRotate PDF Pages and Save the Orientation
Rotating in a viewer is a temporary view. Rotating here changes the file, so the next person sees it the way you do.
OrganizeSplit a PDF by Its Bookmarks Into Chapters
A book or manual that already has an outline does not need page ranges — the outline is the table of contents and the cutting plan.
OrganizeSplit a PDF by File Size to Beat an Email Limit
Upload forms do not care about page counts, they care about megabytes. Splitting by size answers the limit that is actually blocking you.
OrganizeSplit a PDF Where the Heading Text Changes
If every section begins with the customer's name or an account number, that heading is the natural cut point.
OrganizeSplit Book Spreads: One Page per Half Sheet
A book photographed flat gives you two pages per scan. Splitting down the middle puts them back into reading order.
OrganizeSplit a PDF Every N Pages Into Separate Files
One file holding two hundred statements is one file nobody can send. Fixed-size chunks turn it into two hundred documents.
SecurityUnlock a PDF: Remove a Password You Know
An open password protects the file; restriction flags only limit the buttons. Both can be cleared when the document is yours.
Format & StyleAdd a Watermark to a PDF in Seconds
DRAFT, CONFIDENTIAL, or a client's logo: a watermark says something about the document without editing its content.
Convert to PDFWord to PDF: Keep the Layout Intact
Sending a .docx means sending an editable draft. Converting with a real office engine keeps the page as it looks on your screen.
AutomateChain PDF Steps Into One Workflow
The same five steps on every document is a workflow waiting to be saved: write the chain once, then launch it.