A guide to PNG optimization
1. Background 1.1 The PNG file format The Portable Network Graphics (PNG) is a format for storing compressed raster graphics. The compression engine is based on the Deflate method [RFC1951], designed by PKWare and originally used in PKZIP. The PNG format is defined by the PNG Specification. This specification was developed by an ad-hoc group named the PNG Development Group, and it is both an Inter
xpath cover page
XPath 3.0 (renamed from XPath 2.1 to align with the family of "3.0" specifications) is an expression language that allows the processing of values conforming to the data model defined in [XQuery and XPath Data Model (XDM) 3.0]. Some of the important new features since XPath 2.0 are: Literal function items, inline functions, dynamic function invocations, and function item coercion Clarification of
ISO 639 - Wikipedia
この記事は検証可能な参考文献や出典が全く示されていないか、不十分です。出典を追加して記事の信頼性向上にご協力ください。（このテンプレートの使い方） 出典検索?: "ISO 639" – ニュース · 書籍 · スカラー · CiNii · J-STAGE · NDL · dlib.jp · ジャパンサーチ · TWL（2021年2月） ISO 639は、言語の名称の略号を規定した国際規格である。国際標準化機構が発行。 概説[編集] ISO 639は1998年より2023年まで、後述する複数の部に分かれていたが、ISO 639:2023によって旧ISO 639-1からISO 639-5までが再統合された。この間に各「部」（"Part"）に属したコードはそれぞれ同一規格内の「集合」（"Set"）に再編成された。 ISO 639:2023 Code for individual language
MP3 File Format Specification
An MPEG audio file is built up from smaller parts called frames. Generally, frames are independent items. Each frame has its own header and audio informations. As there is no file header, you can cut any part of MPEG file and play it correctly (this should be done on frame boundaries but most applications will handle incorrect headers). However, for Layer III, this is not 100% correct. Due to inte
ECMAScript Language Specification (ECMA-262 5th Edition)
This is not the official ECMAScript Language Specification. The official specification is the PDF document located at http://www.ecma-international.org/publications/files/ECMA-ST/ECMA-262.pdf. This HTML version was created from the original PDF version by a preposterous concatenation of hacks. It very likely contains errors and the official standard and errata are of course definitive. For copyrig
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Java 暗号化拡張機能 JDK5.0