Choose your PDFs
Drag in one or more PDFs or choose them from your device. ToolkitLoop checks each file’s format, 50 MB file limit and 200-page limit before processing it in sequence.
Compress PDF
Make an eligible PDF smaller in your browser. Your file stays on this device; ToolkitLoop re-encodes supported JPEG images and verifies the output before it can be downloaded.
Drop PDF files herePDF only · up to 50 MB · 200 pagesUp to 10 files, 120 MB total
Compress PDFs online without uploading them.
Queue up to 10 PDFs, select one compression level for the batch and download only smaller files that pass opening, page-count and first-page rendering checks. This browser-first tool is useful when PDFs need to be easier to email, store or upload to a form.
Choose, check, then download.
Select a compression level
Recommended balances JPEG image size and quality. Smaller file uses a stronger JPEG setting; Better quality is more conservative.
Verify and download
Before download, the browser confirms that each result opens, has the same number of pages and can render page one. Download successful PDFs individually or together in a ZIP.
Image-heavy PDFs are the best fit.
What can get smaller
This tool re-encodes supported JPEG image streams inside each PDF. Scanned pages or documents with large JPEG photos are the most likely to benefit.
What may not change
Vector artwork, selectable text, fonts, PNG images and other scan encodings may not shrink much. The tool does not rasterize every page to force a smaller size.
File and privacy limits
Queue up to 10 PDFs, each up to 50 MB and 200 pages, with a 120 MB total queue limit. Reading, compression and output checks run in your browser; the tool has no upload API.
Compress PDF FAQ
Will every PDF become smaller?
No. This version can only reduce eligible JPEG images embedded in a PDF. A text- or vector-heavy PDF, PNG-based scan, or already-optimized PDF may not change enough to create a smaller verified result.
Can I compress a PDF to exactly 1 MB or 500 KB?
No exact size can be guaranteed because PDF contents differ. You can select a target size, and the tool reports whether the smaller verified output reached it without crossing its quality guardrail.
Does PDF compression reduce text quality?
ToolkitLoop does not rasterize whole pages. It preserves the PDF structure and only re-encodes eligible JPEG image streams, so text and vector content are not intentionally converted into an image.
Are my PDFs uploaded or stored?
No. File reading, compression and verification run locally in the browser. The tool has no document upload endpoint.
Why did the tool keep my original PDF?
The tool keeps the original when it cannot safely produce a smaller, verified PDF. For example, the document may not include eligible JPEG images, or the output may be as large as or larger than the original.
Can I merge PDFs before compressing them?
Yes. Use ToolkitLoop Merge PDF first to arrange multiple PDFs into one file, then compress the merged file if it is within this tool’s limits.
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