Changelog: Updates, milestones, roadmap
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IronOCR Roadmap
We developed IronOCR to fill a market need, and it’s excelled as one of our leading products. Today we are continually shipping new feature requests, driven by community demand.
We actively work with Google’s latest Tesseract technology to drive stability and high accuracy. This ensures our customers are benefiting from the cutting edge OCR reading engine.
Our monthly releases see IronOCR continually prove its worth, and drive our mission to help end users move the .NET language forward.
We know IronOCR is one of the top choices developers make¹. To cement IronOCR as the leading product of its kind we are applying the latest technology to improve image filters, computer vision and machine learning.
Our next epic will be to launch IronOCR for multiple programming languages.
¹Based on a customer survey conducted in June 2022.
June 2023
IronOCR v2023.6.6
Features & Upgrades
https://www.nuget.org/packages/IronOcr/2023.6.6
Release Notes:
Major Changes:
- PostBuildEvent Runtime Folder Copy Fix: Resolved an issue related to copying the runtime folder during PostBuildEvent
- Updates IronSoftware.System.Drawing to 2023.6.1
May 2023
IronOCR v2023.4.13
Features & Upgrades
https://www.nuget.org/packages/IronOcr/2023.5.35
Release Notes:
Major Changes:
- Fixes an issue where license keys would not be retrieved from web.config in some .NET Framework ASP.NET projects
- Updates IronSoftware.System.Drawing to 2023.4.4
April 2023
IronOCR v2023.4.13
Features & Upgrades
https://www.nuget.org/packages/IronOcr/2023.4.13
Release Notes:
Major Changes:
- Updates IronSoftware.System.Drawing to 2023.3.3
- Includes new ReadPdfAndOverlayText method on IronTesseract to add text and preserve original PDF bookmarks/annotations
- Resolves an issue causing Searchable PDFs with many images to becomes large files
- Fixes an issue where the Binarize filter made Searchable PDFs blank
- Fixes issue where the Read method would create temp files and not clean them up
- Adds support for the IronSuite license keys
- Fixes issues with license keys stored in .config and .json files not being picked up by IronOCR
- Adds support for license keys stored in .config and .json files in subfolders of the application
March 2023
IronOCR v2023.3.2
Features & Upgrades
https://www.nuget.org/packages/IronOcr/2023.3.2
Release Notes:
Major Changes:
- Adds compatibility for AWS (Amazon Linux)
- Adds compatibility for various older Linux distributions
- Improves reliability when reading text from PDFs
- Improves speed and fidelity when creating searchable PDFs
- Improves logic for finding language files
- Removes dependency on
System.Drawing
January 2023
IronOCR v2023.1.11644
Features & Upgrades
https://www.nuget.org/packages/IronOcr/2023.1.11644
Release Notes:
Major Changes:
- Adds
Installation.LanguagePackDirectory
for specifying path to .ocrdata files - Fixes IronOcr for use with ClickOnce publishing and 'dotnet publish' command
- Fixes some instances where language packs would fail to load
- Fixes crop rectangle being ignored when reading from TIFF images
- Fixes trial users not being able to read text from images
- Allows single-threaded OCR reads (see
IronTesseract.Multithreaded
)
December 2022
IronOCR v2022.12.10830
Features & Upgrades
https://www.nuget.org/packages/IronOcr/2022.12.10830
Release Notes:
Major Changes:
- Adds
IronSoftware.System.Drawing
to replaceSystem.Drawing.Common
in IronOCR - Removes internal dependency on
System.Drawing.Common
(see footnote [1] for more info) - Adds support for .NET 7
- Removes support for .NET Framework 4. Minimum supported for .NET Framework is now version 4.6.2
Other Changes:
- Improves support for many Linux Distros
- Improves
OcrFilters.DeNoise
: Now reduces speckle noise. - Adds brand new
OcrFilters
to improve reading from noisy images: Open
: Filter that is useful for removing noise.Close
: Filter that is useful for closing small holes inside foreground objects.AdaptiveThreshold
: Applies a Bradley Adaptive Threshold to the image.
[1] Note about removal of System.Drawing.Common
:
- Microsoft has discontinued support for
System.Drawing.Common
on non-Windows for .NET 6, and completely for .NET 7 : https://docs.microsoft.com/en-us/dotnet/core/compatibility/core-libraries/6.0/system-drawing-common-windows-only - In order to handle this, we have developed an open-source library called
IronSoftware.System.Drawing
which easily translates between all the common types and formats thatSystem.Drawing.Common
did which will replace it - Customers who still want to use
System.Drawing.Common
with IronOCR will still be able to.IronSoftware.System.Drawing
will work with this format but sinceSystem.Drawing.Common
is no longer a dependency, usage will require the customer to add a `using System.Drawing.Common;` call in their code.
October 2022
IronOCR v2022.11.10109
Features & Upgrades
https://www.nuget.org/packages/IronOcr/2022.11.10109
Release Notes:
- Fixes MAUI support
- Fixes 'missing runtimes folder' error
- Fixes 'missing libtesseract' error
- Greatly improved compatibility and deployment on many platforms
- Adds 'Installation.MachineLearningModelsDirectory' for specifying path to .onnx files
- Minor bug fixes
- Now supports installation via zip file or installer
September 2022
IronOCR v2022.10.9390
Features & Upgrades
https://www.nuget.org/packages/IronOcr/2022.10.9390
Release Notes:
- Adds support for using machine learning technology to detect regions which may contain text
- Adds OcrInput methods FindTextRegion and FindMultipleTextRegions - add the IronOcr.ComputerVision NuGet package for your platform
- Adds OcrResult method SaveAsSearchablePdfStream for saving a result as a PDF stream
- Updates Windows build to require fewer dependencies and use less disk space
- Updates image loading to always remove color tables from images before performing OCR, improving accuracy
- Fixes GetCropRectangleImage to work properly with all source image formats
- Fixes issue with Installation.LoggingMode and LogFilePath not applying properly
August 2022
IronOCR v2022.8.8198
Features & Upgrades
https://www.nuget.org/packages/IronOcr/2022.8.8198
Release Notes:
- Added new method for visualizing a crop rectangle on an image. See OcrInput.StampCropRectangleAndSaveAs()
- Added new method for applying multiple filters at once. See OcrInput.ApplyMultipleFilters()
- Changes Deskew filter to no longer throw an exception on failure
- Improves compatibility on Windows systems which may not have Microsoft C++ redistributables installed
- Improves compatibility on MacOs systems (both Intel and Apple Silicon) which may be missing certain imaging libraries
July 2022
IronOCR v2022.8.7804
Features & Upgrades
https://www.nuget.org/packages/IronOcr/2022.8.7804
Release Notes:
- Updates Tesseract to version 5.1
- Adds support for Apple Silicon devices (MacOs on ARM processor)
- Adds OcrInput.SaveAsImages() for saving input items as an image
- Adds CropRectangle class which allows cropping using millimeter values or pixel values
- Removes MinimumDpi. Please use TargetDpi to upscale your OCR input
- Setting TargetDpi to null now prevents IronOcr from upscaling images, resulting in much smaller searchable PDFs
- Fixes bug where Erosion filter applied Dialation and Dialation filter applied Erosion
- Fixes bug where PDF pages were numbered incorrectly
- Improves compatibility across various Linux distributions
March 2022
IronOCR v2022.3.0
Features & Upgrades
https://www.nuget.org/packages/IronOcr/2022.3.0
Release Notes:
- Improved: .NET 6 Support
- Improved: Secuirty & Performance
January 2022
IronOCR v2022.1.0
Features & Upgrades
https://www.nuget.org/packages/IronOcr/2022.1.0
Release Notes:
- Improved: Multithreading & Performance
- Improved: PDF OCR performance
- Feature: OCR Progress Tracking
- Improved: Orientation and Script Detection (OSD)
- Improved: Deskew Methods
- Improved: Secuirty & Performance
December 2021
IronOCR v2021.12.0
Features & Upgrades
https://www.nuget.org/packages/IronOcr/2021.12.0
Release Notes:
- Improved: Speed and Stability
- Improved: .NET 5 and .NET 6 Beta support
- Improved: Logging
October 2021
IronOCR v2021.11.0
Features & Upgrades
https://www.nuget.org/packages/IronOcr/2021.11.0
Release Notes:
- Bug Fixed: Azure Function Compatibility
- Bug Fixed: Works with read-only OCR dictionaries
- Bug Fixed: Now works with .NET 5.07
- Bug Fixed: License Keys reading from project configuration files (edge casess)
- Feature: Color replacement methods added to OcrInput
- Feature: Load specfic frames from TIFF and PDF files
- Improved: Updated System.Drawing.Common