NuGet · #187 most downloaded on NuGet

SixLabors.ImageSharp

4.1.2317M downloads/moSixLabors/ImageSharp ↗New releases in your daily digest, changelog included.

A new, fully featured, fully managed, cross-platform, 2D graphics API for .NET

Last release 24 days ago
14 Sep 2026
Release timing varies
gaps range from 8 days to 6 months
Some releases are documented
notes for 11 of 40 stable releases
10 versions withdrawn
withdrawn after publishing
127 years old
50 releases · first in 1900

Release timeline

50 releases since 1900

1900190219041906

Releases

4.1.214 Sept 2026
Harden codec and metadata input validation by @JimBobSquarePants in #3187
What's Changed

Harden codec and metadata input validation by @JimBobSquarePants in #3187

Fix TIFF decoding of legacy 8-bit color maps by @JimBobSquarePants in #3189

Full Changelog: v4.1.1...v4.1.2
Open source →
4.1.120 Aug 2026
Fix CCITT decompressor bounds checks and error handling by @JimBobSquarePants in #3176
What's Changed

Fix CCITT decompressor bounds checks and error handling by @JimBobSquarePants in #3176

Full Changelog: v4.1.0...v4.1.1

4.1.011 Aug 2026

GIF: background handling & quantizer overflow fix by @JimBobSquarePants in #3133

What's Changed

GIF: background handling & quantizer overflow fix by @JimBobSquarePants in #3133
Validate PBM max pixel value by @JimBobSquarePants in #3134
Add support for Apple CgBI PNG images by @Erik-White in #3136
Fix GIF transparency handling and dither by @JimBobSquarePants in #3143
Bump codecov/codecov-action from 6 to 7 by @dependabot[bot] in #3141
Add BlendWithCoverage overloads. Optimize Rgba32 compatible shuffling. by @JimBobSquarePants in #3150
Bump actions/checkout from 6 to 7 by @dependabot[bot] in #3146
Bump actions/cache from 5 to 6 by @dependabot[bot] in #3149
Fix convolution sampling for bounds smaller than the kernel radius by @JimBobSquarePants in #3152
Enhance pixel formats and associated-alpha operations with optimizations by @JimBobSquarePants in #3154
Bump actions/setup-dotnet from 5 to 6 by @dependabot[bot] in #3155
Fix degeneracy check for resize transforms by @JimBobSquarePants in #3157
Improvements to Apple CgBI PNG handling by @Erik-White in #3137
Clone TIFF profiles into image metadata by @JimBobSquarePants in #3159
Add AOT compiler seeds for pixel formats and ICO, CUR, QOI codecs by @JimBobSquarePants in #3160
Normalize SIMD pipelines using TensorPrimitives_ by @JimBobSquarePants in #3161
Add ANI decoder support by @Poker-sang in #2899
Remove AntialiasThreshold from GraphicsOptions by @JimBobSquarePants in #3162
Add plus and extended pixel blend modes by @JimBobSquarePants in #3163
Fix 16-bit binary PBM sample byte order by @JimBobSquarePants in #3164
Make MemoryAllocator limits configurable and extensible by @JimBobSquarePants in #3165

New Contributors

@Erik-White made their first contribution in #3136

Full Changelog: v4.0.0...v4.1.0

Open source →

4.0.012 May 2026Security

Fix integer overflow and bounds-checking vulnerabilities in EXR decoder by @svenclaesson in #3126

What's Changed

Update to net8 by @stefannikolei in #2583
Handle dedup of local palette of 256 length - Main by @JimBobSquarePants in #2607
Replace custom Crc32 by @JimBobSquarePants in #2611
Sync 3.1 DrawImage fixes by @tocsoft in #2612
Fix handling gif encoding for global palettes - Main by @JimBobSquarePants in #2615
Bump actions/setup-dotnet from 3 to 4 by @dependabot[bot] in #2613
Adjusted the casing of the Webp format name by @jscarle in #2623
Fix Paeth Filter decode on platforms that do not support Ssse3 - Main by @JimBobSquarePants in #2620
Fix WebP animation speed bug by @marklagendijk in #2624
Promote PixelTypeInfo to Pixel by @stefannikolei in #2601
TGA: Treat 32 bit True Color images always as transparent by @brianpopow in #2643
Modernize and optimize pixel format operations across platforms. by @JimBobSquarePants in #2645
Cleanup SimdUtils by @JimBobSquarePants in #2654
Bump actions/cache from 3 to 4 by @dependabot[bot] in #2648
Bump codecov/codecov-action from 3 to 4 by @dependabot[bot] in #2657
Bump NuGet/setup-nuget from 1 to 2 by @dependabot[bot] in #2658
Add v3.1.x fixes #2673 and #2674 into main. by @JimBobSquarePants in #2675
Add fixes 2668, 2676, and 2677 to main by @JimBobSquarePants in #2678
Merge 2681 to v4 Main by @JimBobSquarePants in #2690
Add JPEG COM marker support by @RobertMut in #2641
Bump actions/upload-artifact from 3 to 4 by @dependabot[bot] in #2625
Only exit JPEG scan decoding after multiple EOF hits by @JimBobSquarePants in #2701
V4 Ensure VP8X alpha flag is updated correctly. by @JimBobSquarePants in #2703
Fix animated png handling (issue #2708) by @SpaceCheetah in #2710
Merge latest release from v3 by @JimBobSquarePants in #2720
Fix MacOS jobs by @antonfirsov in #2728
Fix async-over-sync issue in Image.DecodeAsync() by @kroymann in #2725
Fix overflow in MemoryAllocator.Create(options) by @antonfirsov in #2730
GifDecoder: Limit lzw bits to a maximum of 12 bits by @brianpopow in #2744
GifDecoder : Allow skipping bad metadata using identify by @JimBobSquarePants in #2749
Add ICO and CUR file decoder. by @frg2089 in #2579
v4 - Fix off-by-one error when centering a transform. by @JimBobSquarePants in #2761
v4 Fix 2758 by @JimBobSquarePants in #2764
Simplify Color Space Conversion APIs by @JimBobSquarePants in #2739
Webp: Fix Issue 2763 by @brianpopow in #2767
V4 Correctly break during Png decoding by @JimBobSquarePants in #2773
V4 : Fix filtering on PNG encode. by @JimBobSquarePants in #2778
Fix #2779 buffer overrun by @KirillAldashkin in #2780
Fix ImageMetadata docs typo by @lofcz in #2781
Add API for metadata conversion between formats. by @JimBobSquarePants in #2751
Tiff decoder: Fix issue 2679 by @brianpopow in #2789
Replace PngCrcChunkHandling by @JimBobSquarePants in #2786
Add tagname to debugger visualization for Exif- and Iptc-values, to facilitate easier debugging and discovery by @lassevk in #2787
V4 - Correctly handle transform spaces when building transform matrices. by @JimBobSquarePants in #2795
Allow decoding Tiff of different frame size. by @JimBobSquarePants in #2788
Add progressive JPEG encoder by @ardabada in #2740
Fix using dither in BmpEncoder when bit per pixel is <= 4 by @mistoll in #2819
Add QuadDistortion to ProjectiveTransformBuilder by @Socolin in #2748
WEBP : Use Correct Width With AlphaDecoder by @JimBobSquarePants in #2823
#2807 Add early return in InternalDetectFormat by @stefannikolei in #2835
V4 : Rewrite ChunkedMemoryStream by @JimBobSquarePants in #2838
cleanup projects and environment variables by @kasperk81 in #2812
Expose Convolution Api by @JimBobSquarePants in #2797
Normalize Animation Encoders by @JimBobSquarePants in #2842
Normalize Encoder Transparency Handling For Alpha Aware Image Formats by @JimBobSquarePants in #2844
Remove Unsafe usage from GifDecoderCore and optimize loops by @antonfirsov in #2851
Install libgdiplus on ubuntu by @stefannikolei in #2875
V4 : Decode Chunky Tile Rows Directly. by @JimBobSquarePants in #2879
Get the benchmarks working again. by @JimBobSquarePants in #2886
V4: Gracefully handle LZW overflows by @JimBobSquarePants in #2887
Refactor buffer allocation in Vp8BitWriter.cs to use Span instead of byte[] in WriteFrameHeader by @paulomorgado in #2905
Nested sub ifds parsing fix by @IldarKhayrutdinov in #2869
Fix #2907. BMP indexed palette parsed wrong by @zabulus in #2911
Undo horizontal prediction for each tile row in case of tiled tiff's by @brianpopow in #2878
V4 - Use BPP from Color Writer for Compressor by @JimBobSquarePants in #2916
Modernize JPEG Color Converters by @JimBobSquarePants in #2917
Color conversion with ICC profiles by @JimBobSquarePants in #1567
V4 : Fix GIF, PNG, and WEBP Edge Case Handling by @JimBobSquarePants in #2894
Improve JPEG Block8x8F Intrinsics for Vector128 paths. by @JimBobSquarePants in #2918
Do not attempt to decode iDAT chunks when image is fully decoded. by @JimBobSquarePants in #2926
Fix Code Coverage Tests by @JimBobSquarePants in #2928
Do not encode WEBP images exceeding max dimensions by @JimBobSquarePants in #2930
Enable colorimetric normalization of JPEG image data during decode by @JimBobSquarePants in #2922
Remove unneeded loop in IccClut by @stefannikolei in #2936
Fix Typo and Offset in BufferedReadStream by @stefannikolei in #2935
V4 : Remove ExifTagValue.InteroperabilityIndex by @JimBobSquarePants in #2938
Add ARM support to WEBP Utilities by @JimBobSquarePants in #2933
Add Full Support for JPEG Tiff PhotometricInterpretation.Separated by @JimBobSquarePants in #2937
V4 TIFF : Allow additional and undefined extra samples by @JimBobSquarePants in #2941
V4 Use EXIF byte order for EXIF encoded strings. by @JimBobSquarePants in #2943
Reduce the number of memory allocations in lossless WebP encoder by @SladeThe in #2940
GIF: Check for end of stream when reading comments. by @JimBobSquarePants in #2954
Enforce Explicit Types and Target Type new by @stefannikolei in #2951
Use Target Type new only when apparent by @stefannikolei in #2958
Update Subject EXIF metadata when transforming images. by @JimBobSquarePants in #2946
Convert CodeBase to collection Expressions by @stefannikolei in #2957
Handle hex parsing in Color with format support by @JimBobSquarePants in #2964
Do not store obsolete tRNS chunk data following processing. by @JimBobSquarePants in #2975
Update to license enforcing submodule by @JimBobSquarePants in #2981
Only set GIF canvas background when required. by @JimBobSquarePants in #2982
When decoding a compressed TIFF, truncate a too-long string instead of throwing an exception by @brianberns in #2986
Enforce ICC D50 PCS illuminant when converting colours between profiles by @waacton in #2987
v4 : Add Full Metadata Parsing for WEBP Animations by @JimBobSquarePants in #3001
V4: Prevent negative allocation attempt for huge TIFF files by @JimBobSquarePants in #3003
Fix detection of canonical sRGB profiles by @JimBobSquarePants in #3008
Fix off-by-one errors when transforming images. by @JimBobSquarePants in #3011
Throw UnknownImageFormatException for empty input by @JimBobSquarePants in #3020
Normalize WebP Chunk parsing. by @JimBobSquarePants in #3021
Add ARM hosted runners by @stefannikolei in #3018
Explicitly handle missing SOS marker. by @JimBobSquarePants in #3022
Add .NET10.0 as TFM by @stefannikolei in #3014
Fix decoding tiff image with BigEndian + 64 bit / pixel + associated alpha by @Socolin in #3032
Fix PixelColorType.YCbCr wrongly interpreted as grayscale in PngEncoder by @Socolin in #3034
Fix VP8X reserved bytes use Position += 3 instead of Write, causing 3-byte truncation in alpha WebP images by @jrlost in #3036
Apply ICC Profile / Color Conversion when decoding PNG by @Socolin in #3028
Make UnmanagedMemoryHandle members readonly and improve pool finalization tests by @JimBobSquarePants in #3040
Minor optimizations to Resize. by @JimBobSquarePants in #3044
Enhance XmpProfile to add XDocument normalization by @JimBobSquarePants in #3047
Add proper IptcProfile support in PNG by @JimBobSquarePants in #3048
Add ICC profile conversion support to WEBP by @JimBobSquarePants in #3051
feat: Add animation loop control to DrawImage with repeatCount parameter by @Yushu2606 in #2995
Allow ICC conversion for Uncompressed CIE Lab, CMYK and RGB TIFF by @JimBobSquarePants in #3054
Capture palette from Tiff when available. by @JimBobSquarePants in #3055
Bump codecov/codecov-action from 4 to 5 by @dependabot[bot] in #2840
Speed improvements to resize convolution (no vpermps w/ FMA) by @JimBobSquarePants in

Note truncated.

Open source →

3.1.1229 Oct 2025

v3 : Add Full Metadata Parsing for WEBP Animations by @JimBobSquarePants in #3002

What's Changed

v3 : Add Full Metadata Parsing for WEBP Animations by @JimBobSquarePants in #3002
V3: Prevent negative allocation attempt for huge TIFF files by @JimBobSquarePants in #3004
Backport v3 : Tiff decoder: Fix issue 2679 by @JimBobSquarePants in #3007

Full Changelog: v3.1.11...v3.1.12

Open source →

3.1.1130 Jul 2025

Backport V3 - GIF: Check for end of stream when reading comments. by @JimBobSquarePants in #2955

What's Changed

Backport V3 - GIF: Check for end of stream when reading comments. by @JimBobSquarePants in #2955

Full Changelog: v3.1.10...v3.1.11

Open source →

3.1.1013 Jun 2025

V3: Remove ExifTagValue.InteroperabilityIndex by @JimBobSquarePants in #2939

What's Changed

V3: Remove ExifTagValue.InteroperabilityIndex by @JimBobSquarePants in #2939
V3 TIFF : Allow additional and undefined extra samples by @JimBobSquarePants in #2942
V3 Use EXIF byte order for EXIF encoded strings. by @JimBobSquarePants in #2944
V3 Backport : Reduce the number of memory allocations in lossless WebP encoder by @JimBobSquarePants in #2947

Full Changelog: v3.1.9...v3.1.10

Open source →

3.1.94 Jun 2025

V3: Do not attempt to decode iDAT chunks when image is fully decoded. by @JimBobSquarePants in #2927

What's Changed

V3: Do not attempt to decode iDAT chunks when image is fully decoded. by @JimBobSquarePants in #2927
V3 - Do not throw exception for non-required chunks. by @JimBobSquarePants in #2929
V3: Do not encode WEBP images exceeding max dimensions by @JimBobSquarePants in #2931

Full Changelog: v3.1.8...v3.1.9

Open source →

2.1.1325 Nov 2025

V2 backport: 2243 - Ignore unknown chunks for WEBP by @sonbua in #2505

What's Changed

V2 backport: 2243 - Ignore unknown chunks for WEBP by @sonbua in #2505

New Contributors

@sonbua made their first contribution in #2505

Full Changelog: v2.1.12...v2.1.13

Open source →

2.1.1130 Jul 2025

Backport V2 - GIF: Check for end of stream when reading comments. by @JimBobSquarePants in #2971

What's Changed

Backport V2 - GIF: Check for end of stream when reading comments. by @JimBobSquarePants in #2971

Full Changelog: v2.1.10...v2.1.11

Open source →