PDFtoByte
Runs in your browser

Compress a PDF to the exact size you choose

Drop a PDF on the red sheet, or tap it to choose one. Your file never leaves your browser.

When you reduce the size, pages are resampled as JPEG images: the text stops being selectable.

Compress a PDF to the exact size you choose

Upload forms, job portals, banks and government sites often accept only files under a certain size: 100 KB, 500 KB, 1 MB, 2 MB. Most compressors give you a few vague levels (low, medium, high) and leave you to guess. PDFtoByte works the other way round: you move a slider, see the estimated size and a live preview of the first page, and stop exactly where you want.

  1. Drop your PDF on the red sheet, or tap it to choose a file.
  2. Lower the slider until the estimate matches your limit, or type an exact size such as 300 KB.
  3. Press Compress, check the real size, and download the file.

Is my PDF uploaded to a server?

No. The document is processed inside your browser and is never sent to any server. Close the page and nothing is left behind.

Will the result be exactly the size I pick?

The slider shows an estimate. In our tests the real file usually came out a little under it, and you see the real size before you download. If it lands slightly over your limit, lower the slider a bit and compress again.

Why can’t I select the text afterwards?

To make the file smaller, the pages are turned into JPEG images. The text stays readable to the eye but can no longer be copied or searched. If you need to keep selectable text, use a compressor that only recompresses the images instead.

What if the size I need is very small?

Below a certain size the pages become hard to read. The preview shows how the first page will look: if the text is no longer legible, choose a larger size, or split the document into parts.

Popular sizes

Start from a ready-made target: 50 KB, 100 KB, 200 KB, 300 KB, 500 KB, 1 MB, 2 MB, 5 MB.

Privacy · Italiano