When facing a PDF file, we sometimes have to sign in the file, edit the file or extract image, information from PDF files. To realize meet these needs, some tools can help you.

1, Sign in a PDF file

If you want to sign in a PDF file, the DigiSigner is a good choice. DigiSigner is a helpful tool to digitally sign PDF files and verify signatures. With the signed documents, you can assure that the important PDF documents, such as invoices and contracts, are not tampered with.

2, Extract Images from PDF

To extract image from PDF, you can choose Some PDF Images Extract.  With it, you can extract all images from several PDF files by batch. Images can be saved in jpg, bmp, png, tiff, gif or tga formats. If you want to convert PDF to image, you have to choose other tools.

3, Annotate PDF files

PDF-XChange Viewer supports annotating PDF documents and allows for highlighting, crossing or underlining text; drawing shapes; stamping and filling up PDF forms with a built-in typewriter. Unfortunately some advanced features are available only to the paid-for Pro version. In particular, you can’t create a new bookmark or rename a bookmark title in a PDF document in this free version.

4, Viewer Preference and Metadata

BeCyPDFMetaEdit is a good solution for that. It supports edit most metadata, custom viewer preferences, slide show, page labels, etc. Tweak PDF also supports Metadata with a simple user interface but without slideshow setting and some other features.

If you want to convert PDF to word/text/image even HTML, you can ask the pdf converter for help