A large PDF is placed in a compression device and squeezed to become a smaller PDF

Maximize PDF Performance with Reduced File Size

Optimally Reduce PDF File Size while Preserving Document Fidelity using the Compress PDF API Tool
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PDF documents come in various sizes, ranging from kilobytes to megabytes, and in some cases, even reaching gigabytes. While most PDFs fall within the range of hundreds of kilobytes to several megabytes, large files are not uncommon in specialized use cases. Documents with high-resolution images, hundreds or thousands of pages, or other forms of embedded data can pose challenges when distributing files.

The complexity of PDFs often leads to excess and redundant content, resulting in larger file sizes than necessary, slower upload and download speeds, and higher storage costs. While previous compression tools required users to navigate complex settings, pdfRest Compress PDF API Tool simplifies the process, delivering remarkable compression results without the need for deep technical expertise.

The API offers three compression levels: Low, Medium, and High. The Medium option provides an excellent balance between file size reduction and document fidelity, making it the ideal choice for most users. It intelligently optimizes compression, minimizing loss while achieving significant size reductions. The Low profile is suitable for users seeking moderate compression with minimal quality loss, particularly in images. The High profile, on the other hand, targets maximum compression, accepting modest quality trade-offs.

The term "loss" in this context refers to inconsequential information in a PDF that does not affect visual fidelity or cross-compatibility. Discarding such information technically constitutes data loss, but the document remains unchanged in terms of appearance and functionality. Additionally, images can be compressed in a lossy manner, reducing pixel information without noticeably affecting visual perception.

During development, pdfRest rigorously tested its compression technology against competitors, including SDKs, applications, and online services. By evaluating a diverse collection of PDFs with varying characteristics, pdfRest achieved 20% more compression efficiency than top competitors, using the Medium option. Individual files experienced even greater improvements, with some achieving over 90% compression!

pdfRest Compress PDF API Tool simplifies PDF compression, delivering remarkable results without the need for extensive technical knowledge. By providing intelligent default settings and customizable options, the API empowers users to optimize PDF size with ease. If you encounter unsatisfactory compression results, contact us for further investigation and assistance.

Code Example: Medium Compression   |   Load this into API Lab↗

    curl -X POST "https://api.pdfrest.com/compressed-pdf" \ 
        -H "Accept: application/json" \ 
        -H "Content-Type: multipart/form-data" \
        -H "Api-Key: xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx" \
        -F "file=@PATH_TO_FILE/big_file.pdf" \ 
        -F "compression_level=medium" \

Compress PDF

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