The C# OCR Library
using IronOcr;
string imageText = new IronTesseract().Read(@"images\image.png").Text;
Install-Package IronOcr
In 2024.12, IronOCR introduced a feature that significantly reduced the file size of generated searchable PDFs when processing multi-page TIFF images. While this improvement achieved smaller output files, it also introduced performance challenges in processing speed and memory usage.
Initial optimizations in 2025.1 began addressing these performance issues. The comprehensive performance improvements were later delivered in the 2025.2 release, which maintained the smaller file sizes while resolving the speed and memory challenges when handling multi-page documents.
One major performance bottleneck was page rotation. Each operation created a new instance instead of reusing existing ones, leading to unnecessary processing time and memory consumption. This inefficiency resulted in increased processing time and memory consumption, particularly when converting large TIFFs into searchable PDFs.
The initial fix in IronOCR 2025.1 focused on optimizing instance reuse for page rotation. This led to a modest 10% improvement, reducing processing time from 63 seconds to 57 seconds. But this was just the beginning.
As we delved deeper, we identified several other areas for enhancement.
Each of these optimizations built upon the last, leading to the breakthrough improvements in IronOcr 2025.2.
With these enhancements, the IronOcr 2025.2 update delivered significant performance improvements:
✔ Faster Processing:
✔ More Efficient Memory Usage:
ReadSimpleImage:
ReadMultipleDocs:
Optimized version (2025.2): 20706.6 ms, 15.61% faster than (2024.11) version.
A law firm digitizing legal contracts previously faced slow OCR processing when handling multi-page scanned agreements. With IronOcr 2025.2, they can now convert contracts into searchable PDFs nearly 50% faster, streamlining case research and compliance checks.
Hospitals and clinics often deal with large TIFF scans of patient records. Before, converting a 24-page medical history document into a searchable PDF took over a minute. Now, with improved memory management and concurrent processing, this task is completed in just 32 seconds, allowing for faster access to critical patient data.
Accounting firms scanning hundreds of pages of financial reports needed a solution to keep file sizes manageable while ensuring text remained searchable. With IronOCR’s refined rendering, they can now process multi-document scans more efficiently, reducing both processing time and final file sizes.
Archivists working with scanned research papers and historical documents require highly accurate text recognition while keeping files lightweight for storage. The latest optimizations allow them to handle large-scale document conversions with significantly lower processing overhead.
Optimization isn’t a single leap forward, it’s a step-by-step process shaped by real-world challenges.
Each update builds upon the lessons from the last, resulting in an OCR engine that’s faster, more efficient, and ready for high-demand workloads.
If your business relies on fast, efficient, and accurate OCR processing, this IronOCR 2025.2 update delivers the speed and optimization you need.
Try Free Trial Key for 30 days and experience the process! 🚀
IronOCR 2025.2 includes key optimizations such as instance reuse, concurrent processing, improved memory management, and enhanced PDF rendering, resulting in faster processing and reduced memory usage.
OCR processing is up to 49% faster in IronOCR 2025.2 compared to previous versions, with improvements like 35% faster single image OCR and 45% faster multi-document processing.
IronOCR 2025.2 improves memory usage by reducing object allocations by up to 63% and minimizing memory fragmentation, leading to more efficient performance.
IronOCR 2025.1 began addressing performance issues related to page rotation inefficiencies. IronOCR 2025.2 further resolved these issues and others, significantly improving processing speed and memory usage.
Page rotation was a performance bottleneck because each operation created a new instance, increasing processing time and memory consumption. Optimizing instance reuse helped mitigate this issue.
IronOCR 2025.2 allows law firms to digitize legal contracts and convert them into searchable PDFs nearly 50% faster, enhancing case research and compliance checks.
In healthcare, IronOCR 2025.2 improves the processing of large TIFF scans of patient records, enabling faster access to critical data by completing tasks in just 32 seconds compared to over a minute previously.
IronOCR 2025.2 helps accounting firms process multi-document scans more efficiently, maintaining manageable file sizes while ensuring text remains searchable, thereby reducing processing time.
The ReadSimpleImage function in IronOCR 2025.2 is 16.27% faster than the 2024.11 version and 34.83% faster than the 2025.1 version, with memory usage reduced by 31.27% and 42.12% respectively.
IronOCR 2025.2 allows archivists to handle large-scale document conversions with lower processing overhead, preserving historical documents with accurate text recognition while keeping files lightweight for storage.
Install-Package IronOcr
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If it is not, please contact
support@ironsoftware.com
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Test in production without watermarks.
Works wherever you need it to.
Get 30 days of fully functional product.
Have it up and running in minutes.
Full access to our support engineering team during your product trial
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