Articles
The Flint PDF library
Short, practical pieces on PDFs — fixing a typo, signing a contract, getting a file under 25 MB, picking the right format, dealing with awkward scans. 965 articles and counting.
PDFs for students: the basics
The handful of PDF tricks that save students hours every term.
3 minReadPDFs for Teachers: The Toolkit for Classroom Reality
A practical PDF toolkit for teachers — handouts, course packs, permission slips, and accessible materials, no admin bloat.
5 minReadPreparing a 1099 Pack as a PDF (US)
Assemble a 1099 pack as a PDF — recipient copies, supporting W-9s, and a clean log of who got what when.
4 minReadPreparing a Board Pack as a PDF
Prepare a navigable board pack PDF — agenda, financials, KPIs, deep dives — that directors can read on a flight.
5 minReadPreparing a Data Room as PDFs
Prepare a data room as organised PDFs — sections, naming, version control — without an enterprise VDR for early-stage rounds.
5 minReadPreparing a Loan Application as a PDF Pack
Assemble a polished loan application PDF pack — accounts, projections, business plan, and the documents lenders actually read.
5 minReadPreparing a Mutual NDA as a PDF
Prepare a mutual NDA as a clean PDF template that closes same-day execution for early-stage commercial discussions.
4 minReadPreparing a Prescription as a PDF
Prepare a private prescription as a clean, signed PDF that the patient's pharmacy will accept without phone calls.
4 minReadPreparing a School Report as a PDF
Prepare a polished school report as a PDF — comments, grades, signed, and delivered to parents on time.
4 minReadPreparing a Section 21 Pack as a PDF (UK)
Prepare a defensible Section 21 pack in PDF — the notice and every prescribed document a court will need to see.
4 minReadPreparing a Statutory Declaration as a PDF
Prepare a statutory declaration as a clean, signable PDF that meets the format expected by solicitors and commissioners for oaths.
4 minReadPreparing a Tenancy Agreement as a PDF (UK)
Prepare a UK tenancy agreement as a clean, signable PDF — AST template, schedules, and electronic signing in one workflow.
4 minReadPreparing a VAT Return Pack as a PDF
Assemble a defensible VAT return pack in PDF — summary, listings, reconciliation, and supporting evidence in one file.
4 minReadPreparing an Offer Letter as a PDF
Prepare a clean, professional offer letter as a PDF — including proof of funds — and deliver it before the vendor sees three other offers.
3 minReadPreparing Discharge Paperwork as a PDF
Prepare discharge paperwork as a clean PDF — summary, medications, follow-up — signed and in the patient's hand before they leave.
4 minReadPrinted PDF vs signed PDF: which is legal?
Wet-ink scan or e-signed PDF? Both are legal in most places. Here is the practical difference.
4 minReadRedact account numbers from PDF
Account numbers redacted at every occurrence — find-and-redact patterns for bank, credit card, and ID numbers.
4 minReadRedact confidential PDF
Confidential content removed permanently — for sharing redacted versions of internal documents externally.
4 minReadRedact email addresses from PDF
Bulk email-address redaction — a regex pattern catches every address in one find, then apply redaction in one click.
4 minReadRedact multiple pages at once
When the same content appears on many pages — headers, repeated names, page-level identifiers — redact all instances in one pass.
4 minReadRedact names in PDF
Name redaction across a whole PDF — pattern-based finding plus permanent removal of the underlying text.
4 minReadRedact PDF for court filing
Court filings have strict redaction requirements — permanent removal, not visual masking. Flint meets the standard.
5 minReadRedact PDF keep formatting
Layout-preserving redaction — black marks replace content, but surrounding text doesn't reflow.
4 minReadRedact PDF on Mac
Preview's redaction is unreliable on older macOS versions. Flint in your browser is the safer Mac option.
4 minReadRedact PDF permanently
Permanent redaction means the original content is gone, not hidden. Here's how Flint makes that real.
4 minReadRedact PDF without Acrobat
Acrobat-free PDF redaction — same operation, same standard, none of the subscription.
4 minReadRedact personal information from PDF
Permanent redaction of personal data — not just visually blacked out, actually removed from the file.
4 minReadRedact vs black-out PDF
Two operations that look identical onscreen and behave completely differently when copy-pasted. The wrong one ruins your day.
4 minReadRedaction checklist for legal filings
Litigation redaction needs procedure. Here's the checklist a careful filer runs every time.
4 minReadRedaction checklist for medical records
Medical redaction is identifier-driven. Here's the 18-point checklist Safe Harbor expects.
4 minReadRedaction for FOIA and public records requests
Redaction for FOIA isn't the same as redaction for internal sharing. The bar is higher and the audience is hostile.
5 minReadRemove blank pages from scanned PDF
Scanner blanks gone in one pass — auto-detection plus manual cleanup for any stragglers.
4 minReadReorder PDF by chapter
Chapter-level reordering — move whole chapters in one drag, with bookmark-aware boundaries.
4 minReadReorder PDF pages alphabetically
Alphabetical page ordering for documents where each page is a discrete item — exhibits, contacts, dictionaries.
4 minReadReorder PDF pages by drag
Visual page reordering — grab a thumbnail, drop it where it belongs. The fastest way to fix a jumbled PDF.
3 minReadReorder PDF pages on iPhone
iPhone PDF reordering done right — touch-friendly thumbnails in Safari, no app required.
4 minReadReorder PDF pages on Mac
Two reliable Mac options for reordering PDFs — Preview's built-in sidebar, or Flint in any browser for bigger jobs.
4 minReadReorder PDF with appendix
Appendices that ended up in the wrong place — moved to the end (or elsewhere) in one drag.
4 minReadReorder PDF with thumbnails
Thumbnail-first reordering — big previews you can identify at a glance, fast drag-and-drop placement.
3 minReadReorder scanner output PDF
Scanner output rarely lands perfectly in order. Visual reordering fixes it in minutes, not hours.
4 minReadResize PDF pages to A4
A4 conversion — for global distribution, European printing, ISO compliance. Scale or crop.
3 minReadResize PDF pages to Legal
US Legal-size conversion — for court filings, contracts, and any document needing the taller 8.5×14 inch format.
3 minReadResize PDF pages to Letter
Letter-size conversion — for US printing, US clients, US compliance. Scale or crop to fit.
3 minReadReverse PDF page order
Full PDF reversal — useful for reverse-scanned documents or printer workflows that fed pages in last-to-first order.
3 minReadRotate all pages in a PDF
Whole-document rotation in one click — fix a sideways scan, flip an entire booklet, save the result for good.
3 minReadRotate PDF 180 degrees
Upside-down pages flipped back the right way up — 180-degree rotation in one click.
3 minReadRotate PDF 90 degrees
Ninety-degree rotation in one click — clockwise or counter-clockwise, your choice, saved permanently to the file.
3 minReadRotate PDF and save permanently
View-only rotation doesn't stick. Flint writes rotation into the PDF so it travels with the file everywhere.
3 minReadRotate PDF clockwise
Clockwise 90° rotation, one click per turn — for fixing pages where the top should be on the right.
3 minReadRotate PDF counter-clockwise
Counter-clockwise 90° rotation in one click — for pages where the top should be on the left.
3 minReadRotate PDF with mixed orientations
Mixed-orientation PDFs fixed in one session — group by what's wrong, rotate each group, save the result.
4 minReadRotate PDF without quality loss
Rotation is metadata, not re-rendering. Quality is preserved bit-for-bit when you rotate in Flint.
3 minReadRotate scanned pages correctly
Scanner rotation issues are common and fixable — here's how to fix all of them in one Flint session.
4 minReadRotate a single page in a PDF
Precision page rotation — fix exactly the page that's wrong, leave everything else alone.
3 minReadSelf-signed PDF vs multi-party signing
Self-signing and multi-party signing are two different problems. Here are the tools that fit each.
4 minReadSelf-signing vs witnessed signing
Most contracts don't need a witness. The ones that do, need them done right.
3 minReadSigned PDF changes after editing: handle the broken signature
Edits break signatures. Once broken, re-sign or accept that authenticity is lost.
3 minReadSigned PDF shows invalid signature: diagnose and restore trust
Invalid signatures mean the file changed or the certificate isn't trusted. Each has a different fix.
4 minReadSigned PDF vs DocuSign envelope
Signed PDF or DocuSign envelope? They look similar — they aren't. Here is the honest difference.
5 minReadSigned PDF vs PDF with image of signature
Pasting a signature image is not the same as signing a PDF. Here is the legal and operational difference.
5 minRead