PDF Info

How to check a PDF before you upload it

1. Choose the PDF (or drop it on the box). It is read on your device; your file itself is never changed.
2. Choose the size limit your form gives, such as 200 KB, to check the file against it.
3. Read the checks: anything a portal often refuses is marked, with the tool that fixes it. Copy the report if you want to keep it or send it to someone helping you.

What it shows

• Size: as your phone shows it (1 KB = 1,024 bytes), as portals that count 1,000 bytes a KB see it, and in bytes. A portal's "200 KB" can mean either, so a file is under the limit only if it is under both.
• Pages: each page's size in millimetres as it shows (a turned page as you see it), its paper (A4, Letter, Legal, A3, A5, or a custom size), upright or sideways, and its turn.
• Text or scan: a page with letters is text; a page that is one picture of the whole page is a scan. A scan's DPI (dots an inch) is its picture's pixels divided by the inches it is drawn at: a picture 1,240 pixels wide drawn across an A4 page (8.27 inches) is 150 DPI. Each page is also marked colour, grey or black and white, from its pictures' pixels and the colours of its text.
• Fonts: each font's name, its kind, and whether it is in the file (embedded, or only the letters used: a subset). A font that is not in the file is shown by each reader with a look-alike.
• Inside the file: the PDF version, pictures (how many, how heavy, how stored), a lock (a password to open, or limits on printing and copying, and how it is encrypted), fillable boxes, JavaScript, attached files, layers, notes and links, whether it is tagged for screen readers, fast web view, and the standards its metadata claims (such as PDF/A-2B: what the file says of itself, not checked here).
• Details: its title, author, the app that made it, and when it was made and changed.

What portals often refuse, and the fix

These are the usual reasons; each portal's notification has its own rules, and they decide. To make an upload-ready PDF in one go (A4, upright, under the size), use PDF for Online Forms.

Changing the title, author and other details

Step 3 shows the details a PDF carries: title, author, subject, keywords, the app it was made with and saved by, and when it was created and changed. Change any of them (in Telugu too) and save a new copy: they are written both where readers look first (the XML metadata) and in the older Info dictionary, so every app shows the same. An empty box is taken out.

Remove all metadata before sharing makes a copy without any of it, and lists what it took out, with the values: the details and any other entries an app added (a company name, say); the hidden XML copy and the apps it names; XML details on pages, pictures and fonts; editing apps' private data; the names on comments; the camera details inside photos, with the GPS place a phone records (the picture itself, and its colours, stay exactly the same); the document ID (replaced with a new random one); and leftovers from earlier saves that nothing uses but can still hold an old author's name. The pages, text, fonts and pictures are not touched.

పంపే ముందు PDFలో దాగిన పేరు, యాప్, ఫోటో తీసిన ప్రదేశం (GPS) వంటి వివరాలను తీసేయవచ్చు.

A locked PDF is changed with the password you typed. With its owner password the same lock (passwords and limits) is put back; with only the password to open it, the new copy has no password, and the page says so ( Protect PDF can lock it again). A PDF whose author set limits on changes needs the owner password, as with Unlock PDF. A digitally signed PDF no longer shows a valid signature after any change: keep the signed original.

Questions

Made with pdf-lib (MIT licence), Mozilla's pdf.js (Apache 2.0 licence) and qpdf (Apache 2.0 licence, for locked PDFs), all running in your browser. Licences.