Improve PDF quality: How to do it

A PDF with poor quality can be improved using various methods. For this purpose, you can use free PDF editing tools and graphics programs. For example, a good way is to improve the contrast and sharpness with a free program like GIMP.

Improve PDF after the fact

PDFs with poor quality have often been scanned. Here, incorrect exposure or a document that was poorly printed from the start can result in low-quality PDF files. There are numerous methods to improve these PDFs. You can work with graphics programs or create a new PDF right away. Always try different steps, as not all of them are suitable for every type of document. If you get stuck this way, there is always the option of rebuilding the document in Word or OpenOffice and then saving it again as a PDF.

How to improve the quality of your PDF

1. Convert image to text: Use free tools like "Free Online OCR" to convert text into images. In this way, scanned documents subsequently become text files. You can then save these in PDF format.
2. Image editing programs: Here you can load a PDF and use various tools. First, try to increase the contrast. Dadurch hebt sich schwarze Schrift besser vom Hintergrund ab. Auch die Tonwertkorrektur kann helfen.
3. PDF-Programme: In Adobe Acrobat Pro und im kostenlosen PDF 24 Creator finden Sie ebenfalls Werkzeuge zur Qualitätsverbesserung, unter anderem Farbkorrektur und Kontraste.