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2. File:Hedera logo (2025).png - Wikipedia

   en.wikipedia.org/wiki/File:Hedera_logo_(2025).png

   This logo image consists only of simple geometric shapes or text. It does not meet the threshold of originality needed for copyright protection, and is therefore in the public domain . Although it is free of copyright restrictions, this image may still be subject to other restrictions .

3. Hedera (distributed ledger) - Wikipedia

   en.wikipedia.org/wiki/Hedera_(distributed_ledger)

   Hedera Hashgraph is a public distributed ledger based on the Hashgraph algorithm. [9] [10] Hedera Hashgraph is developed by a company of the same name, Hedera, based in Dallas, Texas. [9] Hedera was founded by Hashgraph inventor Leemon Baird and his business partner Mance Harmon, and Andrew Masanto, adding significant contribution to the team. [11]

4. Fleuron (typography) - Wikipedia

   en.wikipedia.org/wiki/Fleuron_(typography)

   Thirty forms of fleuron have code points in Unicode.The Dingbats and Miscellaneous Symbols blocks have three fleurons that the standard calls "floral hearts" (also called "aldus leaf", "ivy leaf", "hedera" and "vine leaf"); [7] twenty-four fleurons (from the pre-Unicode Wingdings and Wingdings 2 fonts) in the Ornamental Dingbats block and three more fleurons used in archaic languages are also ...

5. List of PDF software - Wikipedia

   en.wikipedia.org/wiki/List_of_PDF_software

   Default PDF and file viewer for GNOME; replaces GPdf. Supports addition and removal (since v3.14), of basic text note annotations. CUPS: Apache License 2.0: No No No Yes Printing system can render any document to a PDF file, thus any Linux program with print capability can produce PDF files Pdftk: GPLv2: No Yes Yes

6. pdfimages - Wikipedia

   en.wikipedia.org/wiki/Pdfimages

   pdfimages is an open-source command-line utility for lossless extraction of images from PDF files, including JPEG2000 and JBIG2 format when used with option -all. [1] It is freely available as part of poppler-utils and xpdf-utils, and included in many Linux distributions. pdfimages originates from the xpdf package (but now part of poppler-utils).

7. Metadata removal tool - Wikipedia

   en.wikipedia.org/wiki/Metadata_removal_tool

   Metadata removal tools are also commonly used to reduce the overall sizes of files, particularly image files posted on the Web. For example, a small image on a website, which may contain metadata including a thumbnail image , can easily contain as much metadata as image data, thus removal of that metadata can halve the file size.

8. Wikipedia:Public domain image resources - Wikipedia

   en.wikipedia.org/wiki/Wikipedia:Public_domain...

   Bing.com – Has an Advanced Image Search that offers images in different resolutions and also categorizes images. Allows free querying of the bing Image Search API up to a certain limit per day. Everystockphoto.com – Searching over 4.3 million public domain and creative commons photos including Wikipedia and NASA. Free user accounts with ...

9. Graphical password - Wikipedia

   en.wikipedia.org/wiki/Graphical_password

   A graphical password or graphical user authentication is a form of authentication using images rather than letters, digits, or special characters. The type of images used and the ways, in which users interact with them vary between implementations.