What this tool does
PDF Compressor helps with reduce document size with controlled compression options. Use the PDF Compressor tool when you need this operation in a browser without installing another application. The page explains the supported input and gives explicit feedback when an input cannot be processed.
How to use it
Choose a PDF, select lossless rewriting or image-only JPEG compression, then create and download the result. Compare both file sizes; a rewrite can be larger. Image-only mode has resolution and quality controls.
Start with a small, representative input so that the result is easy to inspect. Keep a copy of the original before changing or exporting anything. If the output will be used in a production workflow, compare it with the expected behavior in that system rather than assuming a successful conversion proves correctness.
Understanding the result
Up to 50 MB and 500 pages for rewriting; image-only compression supports at most 40 pages, 8 MP per page and 64 MP per batch. Both modes remove interactive forms, annotations, links and signatures. Raster exports also lose searchable text and accessibility tags. Keep the original.
A result reflects the supplied input and selected settings. An empty finding list, a missing optional property or a valid syntax result can be useful, but each has a limited meaning. Review messages and individual fields in context. Where the tool creates configuration, a command or a document, open or inspect the output before replacing an existing file.
Privacy and practical limits
Processing runs locally in your browser. Tool inputs and document contents are not sent to site analytics. Copy and download actions happen only when you request them; clipboard contents and downloaded files can contain sensitive data.
Up to 50 MB and 500 pages for rewriting; image-only compression supports at most 40 pages, 8 MP per page and 64 MP per batch. Both modes remove interactive forms, annotations, links and signatures. Raster exports also lose searchable text and accessibility tags. Keep the original.
Before using an export
Confirm that the output belongs to the correct source and that important fields, page order or values match your intention. Save the source separately for future edits. When collaborating, share only the portion needed for the task, especially when logs, credentials or personal metadata are involved. The guide and tool describe a focused operation and cannot establish the correctness of an entire application or document.