Support knowledge base
Something is
not doing what it should.
Short answers to the things that actually go wrong, grouped by where you were when they did. Each one starts with the cause, because knowing the cause is usually the whole fix.
Opening and saving
The file will not open, or you are not sure what pressing Save is about to do.
A PDF That Opens Elsewhere and Will Not Open Here
Damaged files, files that are not PDFs, protected ones, and the documents refused on purpose.
Read the answerThe Two Passwords in a PDF, and Which One You Are Asked For
What the user and owner passwords each stop, and why removing one writes a new file.
Read the answerEditing
The page will not let you change it, or it changed in a way you did not ask for.
Your Edit Came Back in a Different Font
Embedded fonts are subsets. What gets substituted, and what a missing glyph looks like.
Read the answerDouble-Clicking the Text Does Nothing
Telling a scan from real text in five seconds, and what OCR does not fix afterwards.
Read the answerUnsaved Changes, and What a Crash Costs You
No autosave, no recovery. What the dot on the tab means and what closing the window asks.
Read the answerSigning
Certificates, DSC tokens, and readers that call a good signature invalid.
The Token Is Plugged In and No Certificate Is Listed
Middleware, key type, key usage, and the one Windows store the certificate list is read from.
Read the answerA Reader Calls the Signature Invalid
Untrusted issuer, changed document, no revocation data, no timestamp — and whose problem each is.
Read the answerScans and OCR
Paper that became a picture, and what recognition can and cannot recover from it.
Size and portals
Upload limits, size bands, and rejections that were never about size.
The File Is Compressed and the Portal Still Says It Is Too Big
Compression squeezes images. A text document has nothing to squeeze, and the panel says so first.
Read the answerThe Portal Rejected It and the Size Was Never the Problem
A rejection that was never about the size, and the order to check the other causes in.
Read the answerPages and organising
Order, rotation, numbering — the mechanical parts that go wrong quietly.
Merge Order, Page Numbers and What Happens to Bookmarks
The merge order is the list, not the folder. Bookmarks mostly survive; a signature does not.
Read the answerThe Scan Is Sideways and OCR Read It as Noise
Rotate before OCR, never after. One command tells you which kind of sideways you have.
Read the answerConverting
Getting the words out into something else, and what does not come with them.
Privacy and safety
What is still inside a document after you think you have taken it out.
A Black Box over the Text Is Not Redaction
The words under a black box are still there, still searchable, and trivial to recover.
Read the answerWhat a PDF Still Carries After You Have Read Every Page
Six things that leave with the file and never appear on a page, and how to look at each.
Read the answerWorking faster
The command line, and the parts worth learning if this is your hundredth file.
Not what you were looking for?
The guides are longer and explain why a PDF behaves the way it does, which is often the real question. Limitations lists what the product deliberately does not do — if your answer is there, no setting will change it. The journal covers the same ground for people who are not using the application at all.
Where the download stands
Built, signed, and
not yet on the Store.
Free for personal and commercial use.
Built for Windows 10 and 11.