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