심플 이즈 베스트

## How to Verify Text and Images on the First Page of a PDF in RHEL - There are times when you need to check if a PDF file consists solely of text or if it includes images or a mix of elements. - In particular, there may be cases where it’s essential to confirm if both text and images are present on the first page. This task can be performed efficiently on RHEL using "pdfimages", "pdftotext", and "pdfgrep". --- ### Prerequisites: Installing Required Packages - First, install "pdfimages", "pdftotext", and "pdfgrep" on your RHEL environment. - Generally, RHEL provides these tools through the **Poppler** and **PDFgrep** packages. To install "poppler-utils": ``` sudo yum install poppler-utils ``` To install "pdfgrep": ``` sudo yum install pdfgrep ``` --- ### 1. Checking if an Image is Present on the First Page - The "pdfimages" command is a valuable tool included in the Poppler package for...

### Large Image Processing - Performance Comparison of libvips and ImageMagick Image processing plays a vital role across various fields, from web development to data analysis. Among the widely used tools are ImageMagick and libvips, each offering robust features and performance. In this post, we’ll examine the pros and cons of each library and benchmark results to see which tool is better suited for large image processing and thumbnail generation. --- ### Comparison Table: libvips vs. ImageMagick | **Feature** | **libvips** | **ImageMagick** | |---------------------|--------------------------------------------------------------------|-----------------------------------------------------------------| | **Extraction Speed**| Fast, especially for large images, 4-8 times faster | Stable performance for various tasks; speed reduction possible for large images...