PDF editor tutorialsHow to do it, step by step.

Short guides for everything in SAN PDF Plus - for you in the app, and for business admins who give seats to their team.

All screenshots: sample data, fictional company.

In the app

Open, read and annotate

  1. Tap Open PDF on the home screen, or open a PDF from your mail, messenger or files app with "SAN PDF Plus".
  2. Pinch to zoom, swipe through pages, tap the page number to jump, the thumbnails icon for an overview. The moon icon switches night mode.
  3. Tap the pen to annotate: pen, highlighter, line, arrow, box, circle, note. Undo / redo at the top.
  4. Tap Save (overwrite) or Save as copy. Choose whether notes stay editable annotations or are flattened into the page.
Viewer
Viewer
Annotate
Annotate

Add or change text

  1. Tap T and tap where the text should go. Type, then set size, colour, bold and alignment. Drag to move, pull the corner to resize.
  2. To change existing text, tap Edit text and select the line: the app covers it in the background colour and writes your new text in the same size.
  3. Important: covered text is still in the file underneath. Use Flatten page before sending if the old text must be gone for good.

Pages, merge and split

  1. Open Pages: drag pages to reorder; long-press for rotate, duplicate, delete or extract.
  2. Insert a blank page, pages from another PDF, or photos.
  3. Merge on the home screen: pick several PDFs, put them in order, save one file.
  4. Split: every page, ranges like 1-3,5,8-10, or every N pages.
Pages
Pages

Sign a document

  1. Tap the signature icon, then New signature. Draw it with your finger or a pen (black or blue) and save it. It is stored encrypted on your phone.
  2. Tap where it should go, resize and rotate it, then save the PDF.
  3. Legally this is a simple electronic signature: admissible as evidence (Art. 25 eIDAS), freely assessed by the court, fine for most business documents, but not a qualified signature and not a replacement for the written form (details).
Signature pad
Signature pad

Stamps

  1. Tap the stamp icon and pick one: Paid, Checked, Draft, Copy, Received (with date), Approved, Confidential, Cancelled.
  2. Make your own text stamp (with or without date) or use a picture of your stamp.
  3. Place, resize and rotate it like a signature. A stamp has no legal effect of its own.

Lock and unlock

  1. Lock: set a password to open the PDF and/or forbid printing, copying or changes (AES-256).
  2. Unlock: open the PDF with its password and remove the protection. Without the password nothing is removed.

Scan paper to PDF

  1. Tap Scan and allow the camera. Hold the phone over the page: the blue outline shows the detected edges.
  2. Take the photo, drag the corners if needed, choose a filter (original, grey, black and white, enhanced).
  3. Add more pages, reorder them, then save one PDF. Everything stays on your phone.
Edge detection
Edge detection

PDF to photo, photos to PDF

  1. PDF to images: choose pages, PNG or JPEG and the resolution (72-300 dpi), then save or share.
  2. Images to PDF: pick photos from the gallery, reorder, choose page size and margins, save.

Write an invoice (§ 14 UStG) and an e-invoice

  1. Tap New from template > Rechnung. Fill in your sender data once - the app remembers it.
  2. Add the customer, the date of delivery or service and the items with quantity, price and tax rate (19 %, 7 %, 0 %). Totals per tax rate are calculated for you.
  3. Small business? Switch on § 19 UStG. Reverse charge? Choose § 13b UStG.
  4. Before export the app lists any missing mandatory field. Export as PDF, or as ZUGFeRD / Factur-X (PDF with the XML inside) for business customers.
  5. Keep invoices for 8 years (§ 147 AO) - the app is not an archive.
Invoice form
Invoice form

Share with an encrypted link

  1. Tap Share > Create link and choose how long it lives: 1, 7 or 30 days.
  2. The app encrypts the file and uploads it. The key is only in the link (after the "#").
  3. Send the link. The receiver opens it in any browser and downloads the file. You can delete the link in the app at any time.
Share link
Share link

Business

Business admin: buy seats and type the emails

  1. Open pdf.san-tga.eu/business/start: company, your name, your business email and the number of seats (for example 20). Confirm the emailed code and pay in the secure checkout (Dodo Payments) - yearly, net plus 19 % VAT, for businesses only (§ 14 BGB).
  2. Then you are in the business panel (pdf.san-tga.eu/company; later you sign in there with your email and a 6-digit code, no password).
  3. Under Emails with a seat type a person's email and click Give a seat. That email has SAN PDF Plus Pro at once. If you want Pro yourself, add your own email too.
  4. Someone leaves or no longer needs Pro? Remove - the seat is free at once, and you give it to the next email.
  5. More seats? Change the number under Seats and billing. Invoices, payment method and cancellation are there too.

With a business seat: Pro in the program

  1. Download SAN PDF Plus for Windows at pdf.san-tga.eu/download and start it.
  2. Open Help > Licence and sign in with the email your business admin entered. You get a 6-digit code by email - no licence key.
  3. Done: the program shows Pro. If your admin removes the email, the program continues as the free edition from its next check; your documents stay as they are.

Missing something? Use "Message the developer" in the app, or write to info@san-tga.eu.