Safe structural optimization
High Quality
Keeps original page objects and searchable text. The output may remain close to the original size.
Processed in your browser
Compress PDF
Reduce PDF file size while controlling image quality, rendering detail, color, and document optimization settings.
Safe structural optimizationOptional rasterized copiesBatch compressionMeasured results
Illustrative size example
8.4 MB
Example
2.1 MB
Actual reduction depends on the source PDF and chosen method.
SMART COMPRESSION
Choose a real optimization method
IMAGE OPTIMIZATION
Control rasterized copy quality
GRAYSCALE
Optional for rasterized outputs
BATCH
Compress multiple PDFs
CONNECTED WORKFLOW
Accept transferred browser files
Compression methods
Choose quality, structure, and size deliberately
Nexynto separates safe structural optimization from rasterization so you can understand when searchable content may be flattened.
Standard rasterized copy
Balanced
Re-renders complete pages with medium JPEG quality. Useful for reviewed delivery copies.
Stronger rasterized copy
Small File
Uses stronger JPEG compression. Inspect small text, gradients, and signatures carefully.
How it works
Compress with a measurable result
Add PDFs
Choose one file or a batch.
Select a method
Preserve structure or create a rasterized copy.
Compare outputs
Review measured file sizes after processing.
Private, browser-local compression
PDFs are processed on this device without a Nexynto server upload. Rasterized presets can use more memory because pages are rendered locally.
Common questions
Compress PDF questions
How do I compress a PDF?+
Add one or more PDFs, choose a real compression method, review the quality trade-off, and select Compress PDF. Each completed file shows its measured input and output size.
Does PDF compression reduce quality?+
Safe optimization preserves the document structure and does not intentionally lower visual quality. Balanced and Small File create rasterized delivery copies, so fine image and text detail can change.
How much can a PDF be compressed?+
It depends on the document. Already optimized PDFs may change very little, while image-heavy files can sometimes shrink more when rasterization is acceptable. Nexynto does not promise a fixed percentage.
Can I compress multiple PDFs?+
Yes. The current browser workflow accepts multiple PDFs, processes each file separately, and can package completed results into a ZIP.
Can I compress scanned PDFs?+
Yes. Scanned PDFs are image-heavy, so rasterized presets may reduce their size. Review small text and signatures before replacing the original.
Does compression remove searchable text?+
Safe optimization keeps the original PDF structure. Rasterized presets flatten each page into an image, so searchable text, links, forms, layers, and accessibility structure can be lost.
Can I compress PDF images?+
The rasterized presets re-render complete pages as JPEG images with an adjustable encoding quality. The current engine does not selectively recompress individual embedded images.
Is my PDF uploaded to a server?+
No. This Compress PDF workflow reads, processes, and creates downloads in your browser. Practical batch size depends on available device memory.
Can I compress PDF files on mobile?+
Yes, subject to your mobile browser and available memory. Large image-heavy PDFs are more demanding than small text documents.
Practical guides
Understand PDF file size
Quality guide · 10 min read
How to Compress a PDF Without Losing Quality
Understand structural optimization, image-heavy documents, and when to keep a master copy.
Read guideFile-size guide · 9 min read
Why Is My PDF File So Large?
Find the common causes: scans, embedded images, fonts, duplicate resources, and repeated editing.
Read guideMethods guide · 11 min read
PDF Compression vs Rasterization
Compare structural rewriting with page rendering before choosing a delivery method.
Read guideRelated PDF tools