1- 4/12/2024: version 1.4.0 2 This is a binary compatible release. 3 * API changes: 4 - libwebpmux: WebPAnimEncoderSetChunk, WebPAnimEncoderGetChunk, 5 WebPAnimEncoderDeleteChunk 6 - libsharpyuv: SharpYuvOptionsInit, SharpYuvConvertWithOptions 7 - extras: SharpYuvEstimate420Risk 8 * further security related hardening in libwebp & examples 9 * some minor optimizations in the lossless encoder 10 * added WEBP_NODISCARD to report unused result warnings; enable with 11 -DWEBP_ENABLE_NODISCARD=1 12 * improvements and corrections in webp-container-spec.txt and 13 webp-lossless-bitstream-spec.txt (#611) 14 * miscellaneous warning, bug & build fixes (#615, #619, #632, #635) 15 16- 9/13/2023: version 1.3.2 17 This is a binary compatible release. 18 * security fix for lossless decoder (chromium: #1479274, CVE-2023-4863) 19 20- 6/23/2023: version 1.3.1 21 This is a binary compatible release. 22 * security fixes for lossless encoder (#603, chromium: #1420107, #1455619, 23 CVE-2023-1999) 24 * improve error reporting through WebPPicture error codes 25 * fix upsampling for RGB565 and RGBA4444 in NEON builds 26 * img2webp: add -sharp_yuv & -near_lossless 27 * Windows builds: 28 - fix compatibility with clang-cl (#607) 29 - improve Arm64 performance with cl.exe 30 - add Arm64EC support 31 * fix webp_js with emcc >= 3.1.27 (stack size change, #614) 32 * CMake fixes (#592, #610, #612) 33 * further updates to the container and lossless bitstream docs (#581, #611) 34 35- 12/16/2022: version 1.3.0 36 This is a binary compatible release. 37 * add libsharpyuv, which exposes -sharp_yuv/config.use_sharp_yuv 38 functionality to other libraries; libwebp now depends on this library 39 * major updates to the container and lossless bitstream docs (#448, #546, 40 #551) 41 * miscellaneous warning, bug & build fixes (#576, #583, #584) 42 43- 8/4/2022: version 1.2.4 44 This is a binary compatible release. 45 * restore CMake libwebpmux target name for compatibility with 1.2.2 (#575) 46 * fix lossless crunch mode encoding with WEBP_REDUCE_SIZE 47 (chromium: #1345547, #1345595, #1345772, #1345804) 48 49- 6/30/2022: version 1.2.3 50 This is a binary compatible release. 51 * security fix for lossless encoder (#565, chromium:1313709) 52 * improved progress granularity in WebPReportProgress() when using lossless 53 * improved precision in Sharp YUV (-sharp_yuv) conversion 54 * many corrections to webp-lossless-bitstream-spec.txt (#551) 55 * crash/leak fixes on error/OOM and other bug fixes (#558, #563, #569, #573) 56 57- 1/11/2022: version 1.2.2 58 This is a binary compatible release. 59 * webpmux: add "-set bgcolor A,R,G,B" 60 * add ARM64 NEON support for MSVC builds (#539) 61 * fix duplicate include error in Xcode when using multiple XCFrameworks in a 62 project (#542) 63 * doc updates and bug fixes (#538, #544, #548, #550) 64 65- 7/20/2021: version 1.2.1 66 This is a binary compatible release. 67 * minor lossless encoder improvements and x86 color conversion speed up 68 * add ARM64 simulator support to xcframeworkbuild.sh (#510) 69 * further security related hardening in libwebp & examples 70 (issues: #497, #508, #518) 71 (chromium: #1196480, #1196773, #1196775, #1196777, #1196778, #1196850) 72 (oss-fuzz: #28658, #28978) 73 * toolchain updates and bug fixes (#498, #501, #502, #504, #505, #506, #509, 74 #533) 75 * use more inclusive language within the source (#507) 76 77- 12/23/2020: version 1.2.0 78 * API changes: 79 - libwebp: 80 encode.h: add a qmin / qmax range for quality factor (cwebp adds -qrange) 81 * lossless encoder improvements 82 * SIMD support for Wasm builds 83 * add xcframeworkbuild.sh, supports Mac Catalyst builds 84 * import fuzzers from oss-fuzz & chromium (#409) 85 * webpmux: add an '-set loop <value>' option (#494) 86 * toolchain updates and bug fixes (#449, #463, #470, #475, #477, #478, #479, 87 #488, #491) 88 89- 12/18/2019: version 1.1.0 90 * API changes: 91 - libwebp: 92 WebPMalloc (issue #442) 93 - extras: 94 WebPUnmultiplyARGB 95 * alpha decode fix (issue #439) 96 * toolchain updates and bug fixes 97 (chromium: #1026858, #1027136, #1027409, #1028620, #1028716, #995200) 98 (oss-fuzz: #19430, #19447) 99 100- 7/4/2019: version 1.0.3 101 This is a binary compatible release. 102 * resize fixes for Nx1 sizes and the addition of non-opaque alpha values for 103 odd sizes (issues #418, #434) 104 * lossless encode/decode performance improvements 105 * lossy compression performance improvement at low quality levels with flat 106 content (issue #432) 107 * python swig files updated to support python 3 108 Tool updates: 109 vwebp will now preserve the aspect ratio of images that exceed monitor 110 resolution by scaling the image to fit (issue #433) 111 112- 1/14/2019: version 1.0.2 113 This is a binary compatible release. 114 * (Windows) unicode file support in the tools (linux and mac already had 115 support, issue #398) 116 * lossless encoder speedups 117 * lossy encoder speedup on ARM 118 * lossless multi-threaded security fix (chromium:917029) 119 120- 11/2/2018: version 1.0.1 121 This is a binary compatible release. 122 * lossless encoder speedups 123 * big-endian fix for alpha decoding (issue #393) 124 * gif2webp fix for loop count=65535 transcode (issue #382) 125 * further security related hardening in libwebp & libwebpmux 126 (issues #383, #385, #386, #387, #388, #391) 127 (oss-fuzz #9099, #9100, #9105, #9106, #9111, #9112, #9119, #9123, #9170, 128 #9178, #9179, #9183, #9186, #9191, #9364, #9417, #9496, #10349, 129 #10423, #10634, #10700, #10838, #10922, #11021, #11088, #11152) 130 * miscellaneous bug & build fixes (issues #381, #394, #396, #397, #400) 131 132- 4/2/2018: version 1.0.0 133 This is a binary compatible release. 134 * lossy encoder improvements to avoid chroma shifts in various circumstances 135 (issues #308, #340) 136 * big-endian fixes for decode, RGBA import and WebPPictureDistortion 137 Tool updates: 138 gifwebp, anim_diff - default duration behavior (<= 10ms) changed to match 139 web browsers, transcoding tools (issue #379) 140 img2webp, webpmux - allow options to be passed in via a file (issue #355) 141 142- 11/24/2017: version 0.6.1 143 This is a binary compatible release. 144 * lossless performance and compression improvements + a new 'cruncher' mode 145 (-m 6 -q 100) 146 * ARM performance improvements with clang (15-20% w/ndk r15c, issue #339) 147 * webp-js: emscripten/webassembly based javascript decoder 148 * miscellaneous bug & build fixes (issue #329, #332, #343, #353, #360, #361, 149 #363) 150 Tool updates / additions: 151 added webpinfo - prints file format information (issue #330) 152 gif2webp - loop behavior modified to match Chrome M63+ (crbug.com/649264); 153 '-loop_compatibility' can be used for the old behavior 154 155- 1/26/2017: version 0.6.0 156 * lossless performance and compression improvements 157 * miscellaneous performance improvements (SSE2, NEON, MSA) 158 * webpmux gained a -duration option allowing for frame timing modification 159 * new img2webp utility allowing a sequence of images to be converted to 160 animated webp 161 * API changes: 162 - libwebp: 163 WebPPictureSharpARGBToYUVA 164 WebPPlaneDistortion 165 - libwebpmux / gif2webp: 166 WebPAnimEncoderOptions: kmax <= 0 now disables keyframes, kmax == 1 167 forces all keyframes. See mux.h and the gif2webp 168 manpage for details. 169 170- 12/13/2016: version 0.5.2 171 This is a binary compatible release. 172 This release covers CVE-2016-8888 and CVE-2016-9085. 173 * further security related hardening in the tools; fixes to 174 gif2webp/AnimEncoder (issues #310, #314, #316, #322), cwebp/libwebp (issue 175 #312) 176 * full libwebp (encoder & decoder) iOS framework; libwebpdecoder 177 WebP.framework renamed to WebPDecoder.framework (issue #307) 178 * CMake support for Android Studio (2.2) 179 * miscellaneous build related fixes (issue #306, #313) 180 * miscellaneous documentation improvements (issue #225) 181 * minor lossy encoder fixes and improvements 182 183- 6/14/2016: version 0.5.1 184 This is a binary compatible release. 185 * miscellaneous bug fixes (issues #280, #289) 186 * reverted alpha plane encoding with color cache for compatibility with 187 libwebp 0.4.0->0.4.3 (issues #291, #298) 188 * lossless encoding performance improvements 189 * memory reduction in both lossless encoding and decoding 190 * force mux output to be in the extended format (VP8X) when undefined chunks 191 are present (issue #294) 192 * gradle, cmake build support 193 * workaround for compiler bug causing 64-bit decode failures on android 194 devices using clang-3.8 in the r11c NDK 195 * various WebPAnimEncoder improvements 196 197- 12/17/2015: version 0.5.0 198 * miscellaneous bug & build fixes (issues #234, #258, #274, #275, #278) 199 * encoder & decoder speed-ups on x86/ARM/MIPS for lossy & lossless 200 - note! YUV->RGB conversion was sped-up, but the results will be slightly 201 different from previous releases 202 * various lossless encoder improvements 203 * gif2webp improvements, -min_size option added 204 * tools fully support input from stdin and output to stdout (issue #168) 205 * New WebPAnimEncoder API for creating animations 206 * New WebPAnimDecoder API for decoding animations 207 * other API changes: 208 - libwebp: 209 WebPPictureSmartARGBToYUVA() (-pre 4 in cwebp) 210 WebPConfig::exact (-exact in cwebp; -alpha_cleanup is now the default) 211 WebPConfig::near_lossless (-near_lossless in cwebp) 212 WebPFree() (free'ing webp allocated memory in other languages) 213 WebPConfigLosslessPreset() 214 WebPMemoryWriterClear() 215 - libwebpdemux: removed experimental fragment related fields and functions 216 - libwebpmux: WebPMuxSetCanvasSize() 217 * new libwebpextras library with some uncommon import functions: 218 WebPImportGray/WebPImportRGB565/WebPImportRGB4444 219 220- 10/15/15: version 0.4.4 221 This is a binary compatible release. 222 * rescaling out-of-bounds read fix (issue #254) 223 * various build fixes and improvements (issues #253, #259, #262, #267, #268) 224 * container documentation update 225 * gif2webp transparency fix (issue #245) 226 227- 3/3/15: version 0.4.3 228 This is a binary compatible release. 229 * Android / gcc / iOS / MSVS build fixes and improvements 230 * lossless decode fix (issue #239 -- since 0.4.0) 231 * documentation / vwebp updates for animation 232 * multi-threading fix (issue #234) 233 234- 10/13/14: version 0.4.2 235 This is a binary compatible release. 236 * Android / gcc build fixes 237 * (Windows) fix reading from stdin and writing to stdout 238 * gif2webp: miscellaneous fixes 239 * fix 'alpha-leak' with lossy compression (issue #220) 240 * the lossless bitstream spec has been amended to reflect the current code 241 242- 7/24/14: version 0.4.1 243 This is a binary compatible release. 244 * AArch64 (arm64) & MIPS support/optimizations 245 * NEON assembly additions: 246 - ~25% faster lossy decode / encode (-m 4) 247 - ~10% faster lossless decode 248 - ~5-10% faster lossless encode (-m 3/4) 249 * dwebp/vwebp can read from stdin 250 * cwebp/gif2webp can write to stdout 251 * cwebp can read webp files; useful if storing sources as webp lossless 252 253- 12/19/13: version 0.4.0 254 * improved gif2webp tool 255 * numerous fixes, compression improvement and speed-up 256 * dither option added to decoder (dwebp -dither 50 ...) 257 * improved multi-threaded modes (-mt option) 258 * improved filtering strength determination 259 * New function: WebPMuxGetCanvasSize 260 * BMP and TIFF format output added to 'dwebp' 261 * Significant memory reduction for decoding lossy images with alpha. 262 * Intertwined decoding of RGB and alpha for a shorter 263 time-to-first-decoded-pixel. 264 * WebPIterator has a new member 'has_alpha' denoting whether the frame 265 contains transparency. 266 * Container spec amended with new 'blending method' for animation. 267 268- 6/13/13: version 0.3.1 269 This is a binary compatible release. 270 * Add incremental decoding support for images containing ALPH and ICCP chunks. 271 * Python bindings via swig for the simple encode/decode interfaces similar to 272 Java. 273 274- 3/20/13: version 0.3.0 275 This is a binary compatible release. 276 * WebPINewRGB/WebPINewYUVA accept being passed a NULL output buffer 277 and will perform auto-allocation. 278 * default filter option is now '-strong -f 60' 279 * encoding speed-up for lossy methods 3 to 6 280 * alpha encoding can be done in parallel to lossy using 'cwebp -mt ...' 281 * color profile, metadata (XMP/EXIF) and animation support finalized in the 282 container. 283 * various NEON assembly additions 284 Tool updates / additions: 285 * gif2webp added 286 * vwebp given color profile & animation support 287 * cwebp can preserve color profile / metadata with '-metadata' 288 289- 10/30/12: version 0.2.1 290 * Various security related fixes 291 * cwebp.exe: fix import errors on Windows XP 292 * enable DLL builds for mingw targets 293 294- 8/3/12: version 0.2.0 295 * Add support for ARGB -> YUVA conversion for lossless decoder 296 New functions: WebPINewYUVA, WebPIDecGetYUVA 297 * Add stats for lossless and alpha encoding 298 * Security related hardening: allocation and size checks 299 * Add PAM output support to dwebp 300 301- 7/19/12: version 0.1.99 302 * This is a pre-release of 0.2.0, not an rc to allow for further 303 incompatible changes based on user feedback. 304 * Alpha channel encode/decode support. 305 * Lossless encoder/decoder. 306 * Add TIFF input support to cwebp. 307 Incompatible changes: 308 * The encode ABI has been modified to support alpha encoding. 309 * Deprecated function WebPINew() has been removed. 310 * Decode function signatures have changed to consistently use size_t over 311 int/uint32_t. 312 * decode_vp8.h is no longer installed system-wide. 313 * cwebp will encode the alpha channel if present. 314 315- 9/19/11: version 0.1.3 316 * Advanced decoding APIs. 317 * On-the-fly cropping and rescaling of images. 318 * SSE2 instructions for decoding performance optimizations on x86 based 319 platforms. 320 * Support Multi-threaded decoding. 321 * 40% improvement in Decoding performance. 322 * Add support for RGB565, RGBA4444 & ARGB image colorspace. 323 * Better handling of large picture encoding. 324 325- 3/25/11: version 0.1.2 326 * Incremental decoding: picture can be decoded byte-by-byte if needs be. 327 * lot of bug-fixes, consolidation and stabilization 328 329- 2/23/11: initial release of version 0.1, with the new encoder 330- 9/30/10: initial release version with only the lightweight decoder 331