imageto10kb › Bulk PDF Compressor

Bulk PDF Compressor — Compress Multiple PDFs at Once

Compress many PDF files at once to an exact size and download them together as a ZIP. Free, private and in your browser — your documents are never uploaded.

Many PDFs at onceDownload as ZIPNo upload · private
📄 Drop PDFs here or click to choose (select multiple)
Compressed in your browser · never uploaded

Have a folder of PDFs that are all too big to upload? The bulk PDF compressor shrinks many PDF documents at once to an exact size and hands them back in a single ZIP folder. It is perfect for scanned paperwork, application documents and batches of reports.

Everything runs in your browser — no sign-up, no watermark, and your PDFs are never uploaded to any server.

How to compress multiple PDFs at once

  1. Add your PDFs. Drop several PDF files onto the box, or click to select multiple at once.
  2. Set the target size. Enter one KB target that will be applied to every PDF, or tap a preset.
  3. Compress all. Click Compress all. Each PDF is rebuilt in your browser to fit the target, with its new size shown.
  4. Download the ZIP. Click Download all to save every compressed PDF together in a single ZIP folder.

Frequently asked questions

How do I compress multiple PDFs at once?

Drop all your PDFs onto the bulk PDF compressor, set one target size, click Compress all, and Download all to get them in a ZIP folder — everything runs in your browser.

Is there a limit on how many PDFs?

There is no fixed limit; it depends on your device's memory. Large or many-page PDFs take longer, so very big batches are best done in smaller groups.

Are my PDFs uploaded to a server?

No. Every PDF is compressed locally in your browser, so your documents never leave your device.

Does it keep the text selectable?

No — pages are rasterised to guarantee the files fit the size limit, which turns text into part of the page image. This is standard for size-limited uploads and scanned documents.

What do I get when I download?

A single ZIP folder containing every compressed PDF, named clearly by your target size.

More tools

Just one PDF? Use the single PDF compressor. For photos, try the image compressor or bulk image compressor, or start at the document resizer.