Szkennelt JPG-ből álló PDF-t hogy lehet szöveges PDF-é alakítani, hogy kisebb legyen a mérete? (kép nincs benne, csak szöveg)

Adobe Acrobat nevű programra lesz szükséged. Ez nem egyenlő a Reader nevűvel, ez a fizetős változat. Torrentoldalakon megtalálod. Ha megvan, akkor íme a leírás:

file:///C:/Program%20Files%20%28x86%29/Common%20Files/Adobe/Help/en_US/Acrobat%20Pro%203D/9.0/help.html?content=WS76F8368A-2F01-421d-9437-06EEB1C68BA4.html

B verzió, hogy kicsomagolod valamivel a képet a pdf-ből (google), majd teszőleges ocr programmal szövegfelismerést futtatsz le.

Bocsi, hülye helyi link.

Recognize text in scanned documents

You can use Acrobat to recognize text in previously scanned documents that have already been converted to PDF. Optical character recognition (OCR) software enables you to search, correct, and copy the text in a scanned PDF. To apply OCR to a PDF, the original scanner resolution must have been set at 72 dpi or higher.

Note: Scanning at 300 dpi produces the best text for conversion. At 150 dpi, OCR accuracy is slightly lower.

Recognize text in a single document

Open the scanned PDF.

Choose Document > OCR Text Recognition > Recognize Text Using OCR.

In the Recognize Text dialog box, select an option under Pages.

Optionally, click Edit to open the Recognize Text - Settings dialog box, and specify the options as needed.

Recognize text in multiple documents

In Acrobat, choose Document > OCR Text Recognition > Recognize Text In Multiple Files Using OCR.

In the Paper Capture Multiple Files dialog box, click Add Files, and choose Add Files, Add Folders, or Add Open Files. Then select the files or folder.

In the Output Options dialog box, specify a target folder for output files, filename preferences, and an output format.

In the Recognize Text - Settings dialog box, specify the options, and then click OK.

Recognize text in component PDFs in a PDF Portfolio

Select one or more scanned PDFs in a PDF Portfolio.

Choose Document > OCR Text Recognition > Recognize Text Using OCR.

Specify the options in the Recognize Text - Settings dialog box.

Recognize Text - Settings dialog box

Primary OCR Language

Specifies the language for the OCR engine to use to identify the characters.

PDF Output Style

Determines the type of PDF to produce. All options require an input resolution of 72 dpi or higher (recommended). All formats apply OCR and font and page recognition to the text images and convert them to normal text.

Searchable Image

Ensures that text is searchable and selectable. This option keeps the original image, deskews it as needed, and places an invisible text layer over it. The selection for Downsample Images in this same dialog box determines whether the image is downsampled and to what extent.

Searchable Image (Exact)

Ensures that text is searchable and selectable. This option keeps the original image and places an invisible text layer over it. Recommended for cases requiring maximum fidelity to the original image.

ClearScan

Synthesizes a new Type 3 font that closely approximates the original, and preserves the page background using a low-resolution copy.

Downsample Images

Decreases the number of pixels in color, grayscale, and monochrome images after OCR is complete. Choose the degree of downsampling to apply. Higher-numbered options do less downsampling, producing higher-resolution PDFs.