Reduce your PDF file size directly in the browser, without uploading anything to external servers. Save space, send lighter email attachments and share on WhatsApp or Drive in seconds. No installation, no account, no page limits.
Drag your PDF here to compress it
or drag the file here
or open the full PDF editor for annotations, signatures and much more.
Drag the file into the area above or click to browse your files. The document stays on your device.
Select the compression level: high quality for printing or reduced quality for a lighter, faster-to-share file.
Click "Compress PDF" and the optimised file is downloaded instantly. Zero waiting, zero upload.
Everything runs in the browser via WebAssembly. Your PDF is never sent to any server.
No upload, no queue. Processing is local and completes in seconds even for large files.
No required account, no credit card, no watermark. Truly free.
PC, Mac, iPhone, Android — just a modern browser. Safari, Chrome, Firefox or Edge.
Compressing a PDF means reducing the file size by optimising embedded images and simplifying the document's internal structure. It is useful whenever you need to send an email attachment, upload documents to portals with size limits, or share files on messaging apps like WhatsApp and Telegram.
OnlinePdfEditor's tool runs entirely in the browser via WebAssembly: your files are never transmitted to external servers. It supports PDFs with JPEG, PNG and TIFF images, vector graphics and embedded fonts. Text and layout remain identical after compression — only images are optimised.
Unlike cloud solutions such as Adobe Acrobat or Smallpdf, your documents stay completely private here because they never leave your device. No account required, no data transmitted online.
It depends on the content: a PDF with many high-resolution images can shrink by 50–80%. A text-only PDF typically reduces by 10–30%. OnlinePdfEditor optimises embedded images while maintaining high visual quality.
Standard mode optimises images without appreciable visible loss. There is also a more aggressive mode that reduces size further with a slight sharpness loss, useful when file size matters more than print quality.
No. OnlinePdfEditor processes your PDFs entirely in the browser via WebAssembly. The file never leaves your device: it is 100% private and secure.
Yes, but you will need to enter the password to unlock the document before compression. The compressed PDF will keep its original protection.
In the free version the recommended limit is 50 MB. With the Pro plan you can work with larger files without restrictions.
Yes. Just a modern browser: Chrome, Safari, Firefox or Edge. No installation needed — works on any OS including smartphones and tablets.
Free, in the browser, nothing to install. Upload your PDF and go.
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