✦ SOLVORY PDF STUDIO · FREE ONLINE TOOLS
Compress PDF — Free Online Tool
Try PDF structural optimization that preserves native content or an opt-in raster compression mode for scans, with before/after file-size comparison.
Enable JavaScript to use this PDF tool. Instructions and limitations are available below.
How to use Compress PDF
Try PDF structural optimization that preserves native content or an opt-in raster compression mode for scans, with before/after file-size comparison.
- Add a PDF or image, or select multiple files when you need a bulk operation.
- Check the page preview and adjust input order, selected page ranges and tool-specific settings.
- Click Process files and wait for the browser to finish each operation.
- Review output file names and sizes, then download individual results or the ZIP archive.
How Compress PDF works
Structural mode rewrites objects and may reduce some files slightly, or may make them larger. Raster mode renders pages to JPEG and removes text selection, links, forms and vectors.
Workflow example: A scanned 10 MB PDF might shrink after rasterizing at a lower resolution, but a small text PDF may already be optimized. Always verify output quality and size.
Realistic limits: Browser-based processing may be affected by PDF encryption, uncommon fonts or encodings, device memory and file complexity. Input limit is 35 MB per file, 160 MB combined, up to 15 files. Multiple resulting pages or images may increase output size. Download results before leaving this page.
Frequently asked questions
Will Compress PDF always make my file smaller?
No. Results depend on the input. Optimized PDFs may remain the same size or even grow.
Does the strongest compression preserve text?
No. Raster mode flattens pages into images; users must explicitly acknowledge loss of selectable text, form fields and links before processing.
Can I work with multiple files?
Yes. Up to 15 files per batch, with a 35 MB limit for each input and a combined 160 MB limit. Some operations combine everything into one output PDF; others generate individual files or a ZIP.
Are documents sent to Solvory servers?
This application processes PDF inputs in your browser. Libraries are downloaded from external CDNs, which can receive normal connection metadata. Your uploaded files are not transmitted to a Solvory conversion endpoint by these tools.
Why did my PDF fail to convert?
Password protection, corrupt files, unsupported features, very large page dimensions, complex fonts or insufficient device memory can cause errors. Use a smaller valid PDF or another supported browser.
Privacy, compatibility and safety
Files are handled locally through browser PDF APIs and open-source libraries loaded from CDNs. These tools do not intentionally upload PDF contents to Solvory servers. Some PDFs can have restricted or unsupported features. Browser processing does not promise permanent redaction, lossless reformatting or exact output sizes.