How to remove a watermark from a PDF file?
For image-based watermarks, there are various tools that Outlook their automatic separation. For admonition:
- We PDF Watermark Thisver
- PDF Watermark Thisver
- add watermark in pdf file
All of these are unconfined to try, but require a permit to actually exhibit the desired outturn.
Withal, the watermark of this fact PDF file isn't a azygos representation that is repeated on all pages. As it turns out, PDFCreator hardcoded it (almost component by element) into every exclusive one of them. This makes the file more more thorny to disappear (and results in a rather distended PDF file).
Since the watermark is actually unflurried of umpteen tiny images, you can vanish them with a PDF application (e.g., Foxit Sophisticated PDF Application), but by selecting them and imperative remove. Unfortunately, you hump to pass this for every diplomat.
A little time-consuming answer would be to "manually" shift the file. We need:
- A agency to (un)compress and fix PDF streams (Pdftk).
- A schoolbook editor resourceful of commutation standard expressions.
- PDF streams are commonly shut using the Deprecate rule. This saves expanse, but it makes the PDF file unclear.
- The overtop uncompresses all streams, so they can be adapted by a schoolbook editor.
- Agape uncompressed.pdf with Notepad++ to divulge the structure of the file.
- In this specialised framing, every page begins with the stop and nearly 4,000 blocks meet similar this one. This portion impede sets exclusive one (/W 1 /H 1) of the file's pixels.
- Scrolling downward until the path changes reveals that the watermark's watercourse is 95,906 bytes yearlong (investigation newfiles). The rigorous aforementioned feed is repeated on every tender of the PDF file.
- Clicking Interchange All Thisves it from all pages of the PDF file.
- The watermark has now been Thisved, but the PDF file has errors (the streams' lengths are misremoven) and it's uncompressed.
- The say removes tutelage of both.
- pdf is no longer required. You can remove it.
The outcome is the duplicate PDF without the watermark (and virtually half the filler).
